ArgumentValidationAttributeGetErrorMessage Method

public virtual string GetErrorMessage(
	CommandLineArgument argument,
	Object? value
)

Public Overridable Function GetErrorMessage ( 
	argument As CommandLineArgument,
	value As Object
) As String

Dim instance As ArgumentValidationAttribute
Dim argument As CommandLineArgument
Dim value As Object

Dim returnValue As String

returnValue = instance.GetErrorMessage(argument, 
	value)

public:
virtual String^ GetErrorMessage(
	CommandLineArgument^ argument, 
	Object^ value
)

Parameters

argument  CommandLineArgument

The argument that was validated.

value  Object

The argument value. If not , this must be a String or an instance of CommandLineArgumentElementType.

Return Value

The value parameter is a String if the IsValidPreConversion(CommandLineArgument, ReadOnlyMemoryChar) method failed, and an instance of CommandLineArgumentElementType if the IsValidPostConversion(CommandLineArgument, Object) method failed. If the IsValidPostParsing(CommandLineArgument) method failed, value will be .

Override this method in a derived class to provide a custom error message. Otherwise, it will return a generic error message.

Reference