3.1 when would a required field validation be used in an application? Inyour example, what error message would you give if the validation failed? 3.2 when would a Data Type validation be used in an application? In your example, what error message would you give if the validation failed?
ModelState.AddModelError(“Date”,”please enter a date”)3.3 when would a regular expression validation be used in an application? In your example, what error message would you give if thevalidation failed? 4.1 what is the difference between String and string data types in ASP.NET MVC applications.The string in ASP.NET MVC is just an alias for System.String. Generally, where the string is, you canalso use the String as an alternation. However, that doesn’t means there is nothing to say aboutthe difference between String and string:1.”string” is a reserved keyword in C#, “String” is not, that means you can use String as avariable name but not “string”.2.Only when there’s no such a class interface,struct, emun etc which named as “String”and the “System” namespace has been imported by “using System.String”, the String canbe treated as “System.String”.
4.2why do String/string data types play an important role in web applications that use the HTTP/HTTPS protocol?(not sure for this issue)
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