I want to validate input in a form field that takes string input. ASP.Net Core already checks if it is empty or not because it is required.
I have put max and min length attributes on the module and when the input is not valid I want to change this message.
CodePudding user response：
The solution is really simple. All I had to do was add this attribute to the model property
[StringLength(8, ErrorMessage = "{0} length must be between {2} and {1}.", MinimumLength = 6)]
Where the first parameter is the maximum length and the last parameter is the minimum length
More information about this model validation here
CodePudding user response：
For complex validation requirements, you can check out FluentValiation. It is a great tool to help make your validation easy to create and easy to maintain.