ArgumentException Class

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The exception that is thrown when one of the arguments provided to a method is not valid.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

[SerializableAttribute]
public class ArgumentException : SystemException

The ArgumentException type exposes the following members.

  NameDescription
Public methodArgumentException()()()()Initializes a new instance of the ArgumentException class.
Public methodArgumentException(String)Initializes a new instance of the ArgumentException class with a specified error message.
Public methodArgumentException(String, Exception)Initializes a new instance of the ArgumentException class with a specified error message and a reference to the inner exception that is the cause of this exception.
Public methodArgumentException(String, String)Initializes a new instance of the ArgumentException class with a specified error message and the name of the parameter that causes this exception.
Public methodArgumentException(String, String, Exception)Initializes a new instance of the ArgumentException class with a specified error message, the parameter name, and a reference to the inner exception that is the cause of this exception.
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  NameDescription
Public propertyInnerExceptionGets the Exception instance that caused the current exception. (Inherited from Exception.)
Public propertyMessageGets the error message and the parameter name, or only the error message if no parameter name is set. (Overrides Exception..::..Message.)
Public propertyParamNameGets the name of the parameter that causes this exception.
Public propertyStackTraceGets a string representation of the immediate frames on the call stack. (Inherited from Exception.)
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  NameDescription
Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringCreates and returns a string representation of the current exception. (Inherited from Exception.)
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  NameDescription
Protected fieldm_HResult (Inherited from Exception.)
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ArgumentException is thrown when a method is invoked and at least one of the passed arguments does not meet the parameter specification of the called method. All instances of ArgumentException should carry a meaningful error message describing the invalid argument, as well as the expected range of values for the argument.

The primary derived classes of ArgumentException are ArgumentNullException and ArgumentOutOfRangeException. These derived classes should be used instead of ArgumentException, except in situations where neither of the derived classes is acceptable. For example, exceptions should be thrown by:

  • ArgumentNullException whenever nullNothingnullptrunita null reference (Nothing in Visual Basic) is passed to a method that does not accept it as a valid argument.

  • ArgumentOutOfRangeException when the value of an argument is outside the range of acceptable values; for example, when the value "46" is passed as the month argument during the creation of a DateTime.

If the method call does not have any argument or if the failure does not involve the arguments themselves, then InvalidOperationException should be used.

For a list of initial property values for an instance of ArgumentException, see the ArgumentException constructors.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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