. Net MVC foreground validation and background validation

Front Desk verification:

First you have to have a parameter class, the parameter class code is as follows

Summary of Validation tokens

[DisplayName ("Email:")]
[Required (errormessage = "Please enter your email")]
[RegularExpression (@ "^ (\w-*\.*) [email protected] (\w-?) + (\.\w{2,}) +$ ", errormessage =" Please enter the correct mailbox ")]
public string Email {get; set;}

And then go back to the view. Validating parameter classes with Validactionmessagefor

<p>
<label id= "Label_mail" for= "mail" > Email </label>
@Html. textboxfor (model = Model.email, new {@class = "user_input", TabIndex = "4"})
@Html. validationmessagefor (model = model.email)

</p>

Background verification: Personally think it is more appropriate to write a validation class,

Validation class:

public bool Isemail (string isemail) {
Regex regchzn = new Regex (@ "^ (\w-*\.*) [email protected] (\w-?) + (\.\w{2,}) +$ ");
Match m = Regchzn.match (Isemail);
return m.success;
}

Call in the controller to determine if validation succeeds:

private bool Validate (Field field)
{

BOOL Isemail=validate. Isemail (Field.email);

if (isemail==true)

{

return true;

}

else{

return false;

}

}

if (modelstate.isvalid)
{

Used to determine whether the front-end verification

if () {//is used here to write back-end validation

}
}

Pure hand, reproduced please show the original link

. Net MVC foreground validation and background validation