ValidationAttribute.FormatErrorMessage Method (String)
Applies formatting to an error message, based on the data field where the error occurred.
Assembly: System.ComponentModel.DataAnnotations (in System.ComponentModel.DataAnnotations.dll)
This method formats an error message by using the ErrorMessageString property. This method appends the name of the data field that triggered the error to the formatted error message. You can customize how the error message is formatted by creating a derived class that overrides this method.
Available since 4.5
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Available since 3.0