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Exception.xml
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Exception.xml
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<Type Name="Exception" FullName="System.Exception">
<TypeSignature Language="C#" Value="public class Exception" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6" />
<TypeSignature Language="ILAsm" Value=".class public auto ansi beforefieldinit Exception extends System.Object" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6" />
<TypeSignature Language="DocId" Value="T:System.Exception" />
<TypeSignature Language="VB.NET" Value="Public Class Exception" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6" />
<TypeSignature Language="F#" Value="type Exception = class" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6" />
<TypeSignature Language="C++ CLI" Value="public ref class Exception" FrameworkAlternate="dotnet-uwp-10.0;netcore-1.0;netcore-1.1;netstandard-1.0;netstandard-1.1;netstandard-1.2;netstandard-1.3;netstandard-1.4;netstandard-1.5;netstandard-1.6" />
<TypeSignature Language="C#" Value="public class Exception : System.Runtime.Serialization.ISerializable" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-1.1;netstandard-2.0;netstandard-2.1" />
<TypeSignature Language="ILAsm" Value=".class public auto ansi beforefieldinit Exception extends System.Object implements class System.Runtime.Serialization.ISerializable" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netstandard-2.0;netstandard-2.1" />
<TypeSignature Language="VB.NET" Value="Public Class Exception
Implements ISerializable" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-1.1;netstandard-2.0;netstandard-2.1" />
<TypeSignature Language="F#" Value="type Exception = class
 interface ISerializable" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-1.1;netstandard-2.0;netstandard-2.1" />
<TypeSignature Language="C++ CLI" Value="public ref class Exception : System::Runtime::Serialization::ISerializable" FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-1.1;netstandard-2.0;netstandard-2.1" />
<TypeSignature Language="ILAsm" Value=".class public auto ansi serializable beforefieldinit Exception extends System.Object implements class System.Runtime.Serialization.ISerializable" FrameworkAlternate="netframework-1.1" />
<TypeSignature Language="C#" Value="public class Exception : System.Runtime.InteropServices._Exception, System.Runtime.Serialization.ISerializable" FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
<TypeSignature Language="ILAsm" Value=".class public auto ansi serializable beforefieldinit Exception extends System.Object implements class System.Runtime.InteropServices._Exception, class System.Runtime.Serialization.ISerializable" FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
<TypeSignature Language="VB.NET" Value="Public Class Exception
Implements _Exception, ISerializable" FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
<TypeSignature Language="F#" Value="type Exception = class
 interface ISerializable
 interface _Exception" FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
<TypeSignature Language="C++ CLI" Value="public ref class Exception : System::Runtime::InteropServices::_Exception, System::Runtime::Serialization::ISerializable" FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
<AssemblyInfo>
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<AssemblyVersion>9.0.0.0</AssemblyVersion>
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<AssemblyInfo>
<AssemblyName>mscorlib</AssemblyName>
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<AssemblyVersion>2.0.0.0</AssemblyVersion>
<AssemblyVersion>2.0.5.0</AssemblyVersion>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
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<AssemblyInfo>
<AssemblyName>netstandard</AssemblyName>
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<AssemblyVersion>2.1.0.0</AssemblyVersion>
</AssemblyInfo>
<TypeForwardingChain>
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<TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Runtime" ToVersion="6.0.0.0" FrameworkAlternate="net-6.0" />
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<TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Runtime" ToVersion="8.0.0.0" FrameworkAlternate="net-8.0" />
<TypeForwarding From="netstandard" FromVersion="2.1.0.0" To="System.Runtime" ToVersion="9.0.0.0" FrameworkAlternate="net-9.0" />
<TypeForwarding From="System.Runtime" FromVersion="4.1.1.1" To="mscorlib" ToVersion="4.0.0.0" FrameworkAlternate="netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1" />
</TypeForwardingChain>
<Base>
<BaseTypeName>System.Object</BaseTypeName>
</Base>
<Interfaces>
<Interface FrameworkAlternate="net-5.0;net-6.0;net-7.0;net-8.0;net-9.0;netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netcore-3.1;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1;netstandard-2.0;netstandard-2.1">
<InterfaceName>System.Runtime.Serialization.ISerializable</InterfaceName>
</Interface>
<Interface FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<InterfaceName>System.Runtime.InteropServices._Exception</InterfaceName>
</Interface>
</Interfaces>
<Attributes>
<Attribute FrameworkAlternate="net-8.0;net-9.0">
<AttributeName Language="C#">[System.Runtime.CompilerServices.Nullable(0)]</AttributeName>
<AttributeName Language="F#">[<System.Runtime.CompilerServices.Nullable(0)>]</AttributeName>
</Attribute>
<Attribute FrameworkAlternate="net-8.0;net-9.0">
<AttributeName Language="C#">[System.Runtime.CompilerServices.NullableContext(2)]</AttributeName>
<AttributeName Language="F#">[<System.Runtime.CompilerServices.NullableContext(2)>]</AttributeName>
</Attribute>
<Attribute FrameworkAlternate="netframework-1.1">
<AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDual)]</AttributeName>
<AttributeName Language="F#">[<System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.AutoDual)>]</AttributeName>
</Attribute>
<Attribute FrameworkAlternate="netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Serializable]</AttributeName>
<AttributeName Language="F#">[<System.Serializable>]</AttributeName>
</Attribute>
<Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)]</AttributeName>
<AttributeName Language="F#">[<System.Runtime.InteropServices.ClassInterface(System.Runtime.InteropServices.ClassInterfaceType.None)>]</AttributeName>
</Attribute>
<Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Runtime.InteropServices.ComDefaultInterface(typeof(System.Runtime.InteropServices._Exception))]</AttributeName>
<AttributeName Language="F#">[<System.Runtime.InteropServices.ComDefaultInterface(typeof(System.Runtime.InteropServices._Exception))>]</AttributeName>
</Attribute>
<Attribute FrameworkAlternate="netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netframework-4.8.1">
<AttributeName Language="C#">[System.Runtime.InteropServices.ComVisible(true)]</AttributeName>
<AttributeName Language="F#">[<System.Runtime.InteropServices.ComVisible(true)>]</AttributeName>
</Attribute>
</Attributes>
<Docs>
<summary>Represents errors that occur during application execution.</summary>
<remarks>For more information about this API, see <see href="/dotnet/fundamentals/runtime-libraries/system-exception">Supplemental API remarks for Exception</see>.</remarks>
<related type="Article" href="/dotnet/standard/exceptions/">Handling and Throwing Exceptions</related>
<related type="Article" href="/dotnet/framework/resources/packaging-and-deploying-resources-in-desktop-apps">Packaging and Deploying Resources in Desktop Apps</related>
<related type="Article" href="/visualstudio/debugger/assertions-in-managed-code">Assertions in Managed Code</related>
</Docs>
<Members>
<MemberGroup MemberName=".ctor">
<AssemblyInfo>
<AssemblyName>System.Runtime</AssemblyName>
<AssemblyVersion>4.0.0.0</AssemblyVersion>
<AssemblyVersion>4.0.10.0</AssemblyVersion>
<AssemblyVersion>4.0.20.0</AssemblyVersion>
<AssemblyVersion>4.1.0.0</AssemblyVersion>
<AssemblyVersion>4.2.0.0</AssemblyVersion>
</AssemblyInfo>
<Docs>
<summary>Initializes a new instance of the <see cref="T:System.Exception" /> class.</summary>
</Docs>
</MemberGroup>
<Member MemberName=".ctor">
<MemberSignature Language="C#" Value="public Exception ();" />
<MemberSignature Language="ILAsm" Value=".method public hidebysig specialname rtspecialname instance void .ctor() cil managed" />
<MemberSignature Language="DocId" Value="M:System.Exception.#ctor" />
<MemberSignature Language="VB.NET" Value="Public Sub New ()" />
<MemberSignature Language="C++ CLI" Value="public:
 Exception();" />
<MemberType>Constructor</MemberType>
<AssemblyInfo>
<AssemblyName>System.Runtime</AssemblyName>
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<AssemblyVersion>7.0.0.0</AssemblyVersion>
<AssemblyVersion>8.0.0.0</AssemblyVersion>
<AssemblyVersion>9.0.0.0</AssemblyVersion>
</AssemblyInfo>
<AssemblyInfo>
<AssemblyName>mscorlib</AssemblyName>
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<summary>Initializes a new instance of the <see cref="T:System.Exception" /> class.</summary>
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<format type="text/markdown"><![CDATA[
## Remarks
This constructor initializes the <xref:System.Exception.Message%2A> property of the new instance to a system-supplied message that describes the error and takes into account the current system culture.
All the derived classes should provide this parameterless constructor. The following table shows the initial property values for an instance of <xref:System.Exception>.
|Property|Value|
|--------------|-----------|
|<xref:System.Exception.InnerException%2A>|A null reference (`Nothing` in Visual Basic).|
|<xref:System.Exception.Message%2A>|A system-supplied localized description.|
## Examples
The following code example derives an `Exception` that uses a predefined message. The code demonstrates the use of the parameterless constructor for the derived class and the base `Exception` class.
:::code language="cpp" source="~/snippets/cpp/VS_Snippets_CLR_System/system.Exception.Ctor/CPP/new.cpp" id="Snippet1":::
:::code language="csharp" source="~/snippets/csharp/System/Exception/.ctor/new.cs" interactive="try-dotnet" id="Snippet1":::
:::code language="fsharp" source="~/snippets/fsharp/System/Exception/.ctor/new.fs" id="Snippet1":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_CLR_System/system.Exception.Ctor/VB/new.vb" id="Snippet1":::
]]></format>
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<param name="message">The message that describes the error.</param>
<summary>Initializes a new instance of the <see cref="T:System.Exception" /> class with a specified error message.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
This constructor initializes the <xref:System.Exception.Message%2A> property of the new instance by using the `message` parameter. If the `message` parameter is `null`, this is the same as calling the <xref:System.Exception.%23ctor%2A> constructor.
The following table shows the initial property values for an instance of <xref:System.Exception>.
|Property|Value|
|--------------|-----------|
|<xref:System.Exception.InnerException%2A>|A null reference (`Nothing` in Visual Basic).|
|<xref:System.Exception.Message%2A>|The error message string.|
## Examples
The following code example derives an `Exception` for a specific condition. The code demonstrates the use of the constructor that takes a caller-specified message as a parameter, for both the derived class and the base `Exception` class.
:::code language="cpp" source="~/snippets/cpp/VS_Snippets_CLR_System/system.Exception.Ctor/CPP/news.cpp" id="Snippet2":::
:::code language="csharp" source="~/snippets/csharp/System/Exception/.ctor/news.cs" interactive="try-dotnet" id="Snippet2":::
:::code language="fsharp" source="~/snippets/fsharp/System/Exception/.ctor/news.fs" id="Snippet2":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_CLR_System/system.Exception.Ctor/VB/news.vb" id="Snippet2":::
]]></format>
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<Attribute FrameworkAlternate="net-8.0;net-9.0">
<AttributeName Language="C#">[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]</AttributeName>
<AttributeName Language="F#">[<System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]</AttributeName>
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<Parameter Name="context" Type="System.Runtime.Serialization.StreamingContext" Index="1" FrameworkAlternate="netcore-2.0;netcore-2.1;netcore-2.2;netcore-3.0;netframework-1.1;netframework-2.0;netframework-3.0;netframework-3.5;netframework-4.0;netframework-4.5;netframework-4.5.1;netframework-4.5.2;netframework-4.6;netframework-4.6.1;netframework-4.6.2;netframework-4.7;netframework-4.7.1;netframework-4.7.2;netframework-4.8;netstandard-2.0;netstandard-2.1;netcore-3.1;net-5.0;net-6.0;net-7.0;netframework-4.8.1;net-8.0;net-9.0" />
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<param name="info">The <see cref="T:System.Runtime.Serialization.SerializationInfo" /> that holds the serialized object data about the exception being thrown.</param>
<param name="context">The <see cref="T:System.Runtime.Serialization.StreamingContext" /> that contains contextual information about the source or destination.</param>
<summary>Initializes a new instance of the <see cref="T:System.Exception" /> class with serialized data.</summary>
<remarks>
<format type="text/markdown"><.
## Examples
The following code example defines a derived serializable `Exception` class. The code forces a divide-by-0 error and then creates an instance of the derived exception using the (<xref:System.Runtime.Serialization.SerializationInfo>, <xref:System.Runtime.Serialization.StreamingContext>) constructor. The code serializes the instance to a file, deserializes the file into a new exception, which it throws, and then catches and displays the exception's data.
:::code language="cpp" source="~/snippets/cpp/VS_Snippets_CLR_System/system.Exception.GetObjectData/CPP/getobjdata.cpp" id="Snippet1":::
:::code language="csharp" source="~/snippets/csharp/System/Exception/.ctor/getobjdata.cs" id="Snippet1":::
:::code language="fsharp" source="~/snippets/fsharp/System/Exception/.ctor/getobjdata.fs" id="Snippet1":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_CLR_System/system.Exception.GetObjectData/VB/getobjdata.vb" id="Snippet1":::
]]></format>
</remarks>
<exception cref="T:System.ArgumentNullException">
<paramref name="info" /> is <see langword="null" />.</exception>
<exception cref="T:System.Runtime.Serialization.SerializationException">The class name is <see langword="null" /> or <see cref="P:System.Exception.HResult" /> is zero (0).</exception>
<altmember cref="T:System.Runtime.Serialization.SerializationInfo" />
<altmember cref="T:System.Runtime.Serialization.StreamingContext" />
<related type="Article" href="/dotnet/standard/serialization/xml-and-soap-serialization">XML and SOAP Serialization</related>
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<param name="message">The error message that explains the reason for the exception.</param>
<param name="innerException">The exception that is the cause of the current exception, or a null reference (<see langword="Nothing" /> in Visual Basic) if no inner exception is specified.</param>
<summary>Initializes a new instance of the <see cref="T:System.Exception" /> class with a specified error message and a reference to the inner exception that is the cause of this exception.</summary>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
An exception that is thrown as a direct result of a previous exception should include a reference to the previous exception in the <xref:System.Exception.InnerException%2A> property. The <xref:System.Exception.InnerException%2A> property returns the same value that is passed into the constructor, or a null reference (`Nothing` in Visual Basic) if the <xref:System.Exception.InnerException%2A> property does not supply the inner exception value to the constructor.
The following table shows the initial property values for an instance of <xref:System.Exception>.
|Property|Value|
|--------------|-----------|
|<xref:System.Exception.InnerException%2A>|The inner exception reference.|
|<xref:System.Exception.Message%2A>|The error message string.|
## Examples
The following code example derives an `Exception` for a specific condition. The code demonstrates the use of the constructor that takes a message and an inner exception as parameters, for both the derived class and the base `Exception` class.
:::code language="cpp" source="~/snippets/cpp/VS_Snippets_CLR_System/system.Exception.Ctor/CPP/newsi.cpp" id="Snippet3":::
:::code language="csharp" source="~/snippets/csharp/System/Exception/.ctor/newsi.cs" interactive="try-dotnet" id="Snippet3":::
:::code language="fsharp" source="~/snippets/fsharp/System/Exception/.ctor/newsi.fs" id="Snippet3":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_CLR_System/system.Exception.Ctor/VB/newsi.vb" id="Snippet3":::
]]></format>
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<summary>Gets a collection of key/value pairs that provide additional user-defined information about the exception.</summary>
<value>An object that implements the <see cref="T:System.Collections.IDictionary" /> interface and contains a collection of user-defined key/value pairs. The default is an empty collection.</value>
<remarks>For more information about this API, see <see href="/dotnet/fundamentals/runtime-libraries/system-exception-data">Supplemental API remarks for Exception.Data</see>.</remarks>
<example>
<format type="text/markdown"><![CDATA[
The following example demonstrates how to add and retrieve information using the <xref:System.Exception.Data> property.
:::code language="cpp" source="~/snippets/cpp/VS_Snippets_CLR/exception.data/CPP/data.cpp" id="Snippet1":::
:::code language="csharp" source="~/snippets/csharp/System/Exception/Data/data.cs" interactive="try-dotnet" id="Snippet1":::
:::code language="fsharp" source="~/snippets/fsharp/System/Exception/Data/data.fs" id="Snippet1":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_CLR/exception.data/VB/data.vb" id="Snippet1":::
]]></format>
</example>
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<Docs>
<summary>When overridden in a derived class, returns the <see cref="T:System.Exception" /> that is the root cause of one or more subsequent exceptions.</summary>
<returns>The first exception thrown in a chain of exceptions. If the <see cref="P:System.Exception.InnerException" /> property of the current exception is a null reference (<see langword="Nothing" /> in Visual Basic), this property returns the current exception.</returns>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
A chain of exceptions consists of a set of exceptions such that each exception in the chain was thrown as a direct result of the exception referenced in its `InnerException` property. For a given chain, there can be exactly one exception that is the root cause of all other exceptions in the chain. This exception is called the base exception and its `InnerException` property always contains a null reference.
For all exceptions in a chain of exceptions, the `GetBaseException` method must return the same object (the base exception).
Use the `GetBaseException` method when you want to find the root cause of an exception but do not need information about exceptions that may have occurred between the current exception and the first exception.
## Examples
The following code example defines two derived `Exception` classes. It forces an exception and then throws it again with each of the derived classes. The code shows the use of the `GetBaseException` method to retrieve the original exception.
:::code language="cpp" source="~/snippets/cpp/VS_Snippets_CLR_System/system.Exception.GetBaseException/CPP/getbaseexc.cpp" id="Snippet1":::
:::code language="csharp" source="~/snippets/csharp/System/Exception/GetBaseException/getbaseexc.cs" interactive="try-dotnet" id="Snippet1":::
:::code language="fsharp" source="~/snippets/fsharp/System/Exception/GetBaseException/getbaseexc.fs" id="Snippet1":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_CLR_System/system.Exception.GetBaseException/VB/getbaseexc.vb" id="Snippet1":::
]]></format>
</remarks>
<block subset="none" type="overrides">
<para>The <see langword="GetBaseException" /> method is overridden in classes that require control over the exception content or format.</para>
</block>
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<param name="info">The <see cref="T:System.Runtime.Serialization.SerializationInfo" /> that holds the serialized object data about the exception being thrown.</param>
<param name="context">The <see cref="T:System.Runtime.Serialization.StreamingContext" /> that contains contextual information about the source or destination.</param>
<summary>When overridden in a derived class, sets the <see cref="T:System.Runtime.Serialization.SerializationInfo" /> with information about the exception.</summary>
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<format type="text/markdown"><![CDATA[
## Remarks
`GetObjectData` sets a <xref:System.Runtime.Serialization.SerializationInfo> with all the exception object data targeted for serialization. During deserialization, the exception is reconstituted from the `SerializationInfo` transmitted over the stream.
## Examples
The following code example defines a derived serializable `Exception` class that implements `GetObjectData`, which makes minor changes to two properties and then calls the base class to perform the serialization. The example forces a divide-by-0 error and then creates an instance of the derived exception. The code serializes the instance to a file, deserializes the file into a new exception, which it throws, and then catches and displays the exception's data.
:::code language="cpp" source="~/snippets/cpp/VS_Snippets_CLR_System/system.Exception.GetObjectData/CPP/getobjdata.cpp" id="Snippet1":::
:::code language="csharp" source="~/snippets/csharp/System/Exception/.ctor/getobjdata.cs" id="Snippet1":::
:::code language="fsharp" source="~/snippets/fsharp/System/Exception/.ctor/getobjdata.fs" id="Snippet1":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_CLR_System/system.Exception.GetObjectData/VB/getobjdata.vb" id="Snippet1":::
]]></format>
</remarks>
<exception cref="T:System.ArgumentNullException">The <paramref name="info" /> parameter is a null reference (<see langword="Nothing" /> in Visual Basic).</exception>
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<summary>Gets the runtime type of the current instance.</summary>
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## Remarks
The <xref:System.Exception.GetType%2A> method exists to support the .NET Framework infrastructure, and internally invokes the fundamental method, <xref:System.Object.GetType%2A?displayProperty=nameWithType>.
]]></format>
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<summary>Gets or sets a link to the help file associated with this exception.</summary>
<value>The Uniform Resource Name (URN) or Uniform Resource Locator (URL).</value>
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<format type="text/markdown"><![CDATA[
## Remarks
The return value, which represents a help file, is a URN or URL. For example, the `HelpLink` value could be:
"file:///C:/Applications/Bazzal/help.html#ErrorNum42"
## Examples
The following code example throws an `Exception` that sets the `HelpLink` property in its constructor and then catches the exception and displays `HelpLink`.
:::code language="cpp" source="~/snippets/cpp/VS_Snippets_CLR_System/system.Exception.Properties/CPP/properties.cpp" id="Snippet1":::
:::code language="csharp" source="~/snippets/csharp/System/Exception/HelpLink/properties.cs" interactive="try-dotnet" id="Snippet1":::
:::code language="fsharp" source="~/snippets/fsharp/System/Exception/HelpLink/properties.fs" id="Snippet1":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_CLR_System/system.Exception.Properties/VB/properties.vb" id="Snippet1":::
]]></format>
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<summary>Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception.</summary>
<value>The HRESULT value.</value>
<remarks>
<format type="text/markdown"><. See [Common HRESULT Values](/windows/win32/seccrypto/common-hresult-values) in the Windows documentation for a list of the values you are most likely to encounter.
Starting with the .NET Framework 4.5, the <xref:System.Exception.HResult%2A> property's setter is protected, whereas its getter is public. In previous versions of the .NET Framework, both getter and setter are protected.
## Examples
The following code example defines a derived `Exception` class that sets the `HResult` property to a custom value in its constructor.
:::code language="cpp" source="~/snippets/cpp/VS_Snippets_CLR_System/system.Exception.HResult/CPP/hresult.cpp" id="Snippet1":::
:::code language="csharp" source="~/snippets/csharp/System/Exception/HResult/hresult.cs" interactive="try-dotnet" id="Snippet1":::
:::code language="fsharp" source="~/snippets/fsharp/System/Exception/HResult/hresult.fs" id="Snippet1":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_CLR_System/system.Exception.HResult/VB/hresult.vb" id="Snippet1":::
]]></format>
</remarks>
<related type="Article" href="/dotnet/framework/interop/how-to-map-hresults-and-exceptions">How to: Map HRESULTs and Exceptions</related>
<related type="ExternalDocumentation" href="/windows/win32/seccrypto/common-hresult-values">Common HRESULT Values</related>
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<summary>Gets the <see cref="T:System.Exception" /> instance that caused the current exception.</summary>
<value>An object that describes the error that caused the current exception. The <see cref="P:System.Exception.InnerException" /> property returns the same value as was passed into the <see cref="M:System.Exception.#ctor(System.String,System.Exception)" /> constructor, or <see langword="null" /> if the inner exception value was not supplied to the constructor. This property is read-only.</value>
<remarks>
<format type="text/markdown"><![CDATA[
## Remarks
When an exception `X` is thrown as a direct result of a previous exception `Y`, the <xref:System.Exception.InnerException%2A> property of `X` should contain a reference to `Y`.
Use the <xref:System.Exception.InnerException%2A> property to obtain the set of exceptions that led to the current exception.
You can create a new exception that catches an earlier exception. The code that handles the second exception can make use of the additional information from the earlier exception to handle the error more appropriately.
Suppose that there is a function that reads a file and formats the data from that file. In this example, as the code tries to read the file, an <xref:System.IO.IOException> is thrown. The function catches the <xref:System.IO.IOException> and throws a <xref:System.IO.FileNotFoundException>. The <xref:System.IO.IOException> could be saved in the <xref:System.Exception.InnerException%2A> property of the <xref:System.IO.FileNotFoundException>, enabling the code that catches the <xref:System.IO.FileNotFoundException> to examine the cause of the initial error.
The <xref:System.Exception.InnerException%2A> property, which holds a reference to the inner exception, is set upon initialization of the exception object.
## Examples
The following example demonstrates throwing and catching an exception that references an inner exception.
:::code language="cpp" source="~/snippets/cpp/VS_Snippets_CLR/InnerEx/CPP/innerex.cpp" id="Snippet1":::
:::code language="csharp" source="~/snippets/csharp/System/Exception/InnerException/innerex.cs" interactive="try-dotnet" id="Snippet1":::
:::code language="fsharp" source="~/snippets/fsharp/System/Exception/InnerException/innerex.fs" id="Snippet1":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_CLR/InnerEx/VB/innerex.vb" id="Snippet1":::
]]></format>
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<summary>Gets a message that describes the current exception.</summary>
<value>The error message that explains the reason for the exception, or an empty string ("").</value>
<remarks>
<format type="text/markdown"><![CDATA[
Error messages target the developer who is handling the exception. The text of the <xref:System.Exception.Message> property should completely describe the error and, when possible, should also explain how to correct the error. Top-level exception handlers may display the message to end-users, so you should ensure that it is grammatically correct and that each sentence of the message ends with a period. Do not use question marks or exclamation points. If your application uses localized exception messages, you should ensure that they are accurately translated.
> [!IMPORTANT]
> Do not disclose sensitive information in exception messages without checking for the appropriate permissions.
The value of the <xref:System.Exception.Message> property is included in the information returned by <xref:System.Exception.ToString%2A>. The <xref:System.Exception.Message> property is set only when creating an <xref:System.Exception>. If no message was supplied to the constructor for the current instance, the system supplies a default message that is formatted using the current system culture.
## Examples
The following code example throws and then catches an <xref:System.Exception> exception and displays the exception's text message using the <xref:System.Exception.Message> property.
:::code language="cpp" source="~/snippets/cpp/VS_Snippets_CLR_System/system.Exception.Properties/CPP/properties.cpp" id="Snippet1":::
:::code language="csharp" source="~/snippets/csharp/System/Exception/HelpLink/properties.cs" interactive="try-dotnet" id="Snippet1":::
:::code language="fsharp" source="~/snippets/fsharp/System/Exception/HelpLink/properties.fs" id="Snippet1":::
:::code language="vb" source="~/snippets/visualbasic/VS_Snippets_CLR_System/system.Exception.Properties/VB/properties.vb" id="Snippet1":::
]]></format>
</remarks>
<block subset="none" type="overrides">
<para>If you throw an exception from a property, and you need to refer in the text of <see cref="P:System.Exception.Message" /> to the property argument that you set or get, use "value" as the name of the property argument.</para>
</block>
<block subset="none" type="overrides">
<para>The <see cref="P:System.Exception.Message" /> property is overridden in classes that require control over message content or format. Application code typically accesses this property when it needs to display information about an exception that has been caught.
The error message should be localized.</para>
</block>
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