ArgumentNullException Class
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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.
public ref class ArgumentNullException : ArgumentException
public class ArgumentNullException : ArgumentException
[System.Serializable]
public class ArgumentNullException : ArgumentException
[System.Serializable]
[System.Runtime.InteropServices.ComVisible(true)]
public class ArgumentNullException : ArgumentException
type ArgumentNullException = class
inherit ArgumentException
[<System.Serializable>]
type ArgumentNullException = class
inherit ArgumentException
[<System.Serializable>]
[<System.Runtime.InteropServices.ComVisible(true)>]
type ArgumentNullException = class
inherit ArgumentException
Public Class ArgumentNullException
Inherits ArgumentException
- Inheritance
- Inheritance
- Attributes
An ArgumentNullException exception is thrown when a method is invoked and at least one of the passed arguments is null
but should never be null
.
An ArgumentNullException exception is thrown at run time in the following two major circumstances, both of which reflect developer error:
An uninstantiated object is passed to a method. To prevent the error, instantiate the object.
An object returned from a method call is then passed as an argument to a second method, but the value of the original returned object is
null
. To prevent the error, check for a return value that isnull
and call the second method only if the return value is notnull
.
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.
Argument |
Initializes a new instance of the ArgumentNullException class. |
Argument |
Obsolete.
Initializes a new instance of the ArgumentNullException class with serialized data. |
Argument |
Initializes a new instance of the ArgumentNullException class with a specified error message and the exception that is the cause of this exception. |
Argument |
Initializes an instance of the ArgumentNullException class with a specified error message and the name of the parameter that causes this exception. |
Argument |
Initializes a new instance of the ArgumentNullException class with the name of the parameter that causes this exception. |
Data |
Gets a collection of key/value pairs that provide additional user-defined information about the exception. (Inherited from Exception) |
Help |
Gets or sets a link to the help file associated with this exception. (Inherited from Exception) |
HResult |
Gets or sets HRESULT, a coded numerical value that is assigned to a specific exception. (Inherited from Exception) |
Inner |
Gets the Exception instance that caused the current exception. (Inherited from Exception) |
Message |
Gets the error message and the parameter name, or only the error message if no parameter name is set. (Inherited from ArgumentException) |
Param |
Gets the name of the parameter that causes this exception. (Inherited from ArgumentException) |
Source |
Gets or sets the name of the application or the object that causes the error. (Inherited from Exception) |
Stack |
Gets a string representation of the immediate frames on the call stack. (Inherited from Exception) |
Target |
Gets the method that throws the current exception. (Inherited from Exception) |
Equals(Object) |
Determines whether the specified object is equal to the current object. (Inherited from Object) |
Get |
When overridden in a derived class, returns the Exception that is the root cause of one or more subsequent exceptions. (Inherited from Exception) |
Get |
Serves as the default hash function. (Inherited from Object) |
Get |
Obsolete.
Sets the SerializationInfo object with the parameter name and additional exception information. (Inherited from ArgumentException) |
Get |
Gets the runtime type of the current instance. (Inherited from Exception) |
Memberwise |
Creates a shallow copy of the current Object. (Inherited from Object) |
Throw |
Throws an ArgumentNullException if |
Throw |
Throws an ArgumentNullException if |
To |
Creates and returns a string representation of the current exception. (Inherited from Exception) |
Serialize |
Obsolete.
Occurs when an exception is serialized to create an exception state object that contains serialized data about the exception. (Inherited from Exception) |
Product | Versions |
---|---|
.NET | Core 1.0, Core 1.1, Core 2.0, Core 2.1, Core 2.2, Core 3.0, Core 3.1, 5, 6, 7, 8, 9 |
.NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
.NET Standard | 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 2.0, 2.1 |
UWP | 10.0 |
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