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I'm using System.ComponontModel.DataAnnotations to validate my model objects. How could I replace messages standard attributes (Required and StringLength) produce without providing ErrorMessage attribute to each of them or sub classing them?
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When MVC creates the model state for the submitted properties, it also iterates through each property in the view model and validates the property using attributes associated to it. If any errors are found, they are added to the Errors collection in the property's ModelState . Also note that ModelState.
Data Annotations are nothing but certain validations that we put in our models to validate the input from the user. ASP.NET MVC provides a unique feature in which we can validate the models using the Data Annotation attribute. Import the following namespace to use data annotations in the application.
Model state represents errors that come from two subsystems: model binding and model validation. Errors that originate from model binding are generally data conversion errors. For example, an "x" is entered in an integer field.
You can use ErrorMessage property of base class ValidationAttribute for all DataAnnotations validators.
For example:
[Range(0, 100, ErrorMessage = "Value for {0} must be between {1} and {2}")]
public int id;
Maybe it'll help.
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