The exception that is thrown when a null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.
SystemException
SystemSystemException
SystemArgumentException
SystemArgumentNullException
Assembly: mscorlib (in mscorlib.dll)
<[%$TOPIC/27426hcy_en-us_VS_110_2_0_0_0_0%]> _
<[%$TOPIC/27426hcy_en-us_VS_110_2_0_0_0_1%](True)> _
Public Class ArgumentNullException _
Inherits [%$TOPIC/27426hcy_en-us_VS_110_2_0_0_0_2%][[%$TOPIC/27426hcy_en-us_VS_110_2_0_1_0_0%]]
[[%$TOPIC/27426hcy_en-us_VS_110_2_0_1_0_1%](true)]
public class ArgumentNullException : [%$TOPIC/27426hcy_en-us_VS_110_2_0_1_0_2%][[%$TOPIC/27426hcy_en-us_VS_110_2_0_2_0_0%]]
[[%$TOPIC/27426hcy_en-us_VS_110_2_0_2_0_1%](true)]
public ref class ArgumentNullException : public [%$TOPIC/27426hcy_en-us_VS_110_2_0_2_0_2%][<[%$TOPIC/27426hcy_en-us_VS_110_2_0_3_0_0%]>]
[<[%$TOPIC/27426hcy_en-us_VS_110_2_0_3_0_1%](true)>]
type ArgumentNullException =
class
inherit [%$TOPIC/27426hcy_en-us_VS_110_2_0_3_0_2%]
endThe ArgumentNullException type exposes the following members.
| Name | Description | |
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.png) | ArgumentNullException | Initializes a new instance of the ArgumentNullException class. |
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| ArgumentNullException(String) | Initializes a new instance of the ArgumentNullException class with the name of the parameter that causes this exception. |
.gif) | ArgumentNullException(SerializationInfo, StreamingContext) | Initializes a new instance of the ArgumentNullException class with serialized data. |
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| ArgumentNullException(String, Exception) | Initializes a new instance of the ArgumentNullException class with a specified error message and the exception that is the cause of this exception. |
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| ArgumentNullException(String, String) | Initializes an instance of the ArgumentNullException class with a specified error message and the name of the parameter that causes this exception. |
| Name | Description | |
|---|---|---|
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| Data | Gets a collection of key/value pairs that provide additional user-defined information about the exception. (Inherited from Exception.) |
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| HelpLink | Gets or sets a link to the help file associated with this exception. (Inherited from Exception.) |
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| HResult | Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception. (Inherited from Exception.) |
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| InnerException | Gets the Exception instance that caused the current exception. (Inherited from Exception.) |
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| Message | Gets the error message and the parameter name, or only the error message if no parameter name is set. (Inherited from
ArgumentException.) In XNA Framework 3.0, this member is inherited from Exception Message. |
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| ParamName | Gets the name of the parameter that causes this exception. (Inherited from ArgumentException.) |
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| Source | Gets or sets the name of the application or the object that causes the error. (Inherited from Exception.) |
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| StackTrace | Gets a string representation of the immediate frames on the call stack. (Inherited from Exception.) |
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| TargetSite | Gets the method that throws the current exception. (Inherited from Exception.) |
| Name | Description | |
|---|---|---|
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| Equals(Object) | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
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| Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
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| GetBaseException | When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions. (Inherited from Exception.) |
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| GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
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| GetObjectData | Sets the SerializationInfo object with the parameter name and additional exception information. (Inherited from ArgumentException.) |
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| GetType | Gets the runtime type of the current instance. (Inherited from
Exception.) In XNA Framework 3.0, this member is inherited from Object GetType. In Portable Class Library Portable Class Library, this member is inherited from Object GetType. In .NET for Windows Store apps Windows 8, this member is inherited from Object GetType. |
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| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
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| ToString | Creates and returns a string representation of the current exception. (Inherited from Exception.) |
| Name | Description | |
|---|---|---|
.gif) | SerializeObjectState | Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception. (Inherited from Exception.) |
ArgumentNullException is thrown when a method is invoked and at least one of the passed arguments is but should never be .
ArgumentNullException behaves identically to ArgumentException. It is provided so that application code can differentiate between exceptions caused by null arguments and exceptions caused by arguments that are not null. For errors caused by arguments that are not null, see ArgumentOutOfRangeException.
ArgumentNullException uses the HRESULT E_POINTER, which has the value 0x80004003.
For a list of initial property values for an instance of ArgumentNullException, see the ArgumentNullException constructors.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
