我该如何编写验证 [英] how can i write validations

问题描述

大家好，
我正在使用smpt电子邮件表格

用户单击提交时，应检查验证并发送代码

请帮我怎么办?

这是我完成的代码，但我需要验证...

例子

Hi all,
I am working with smpt email form

when the user clicks on submit it should check the validation and send the code

Please help me how can i do it ?

This is the code with i done but i need validations...

example

protected void Btn_Submit_Click(object sender, EventArgs e)
if{validation == true}
   {
    SendUserMail("mailid",txt_mail.text,"Hi How are you");
  
    string Body = "fname.text", "name.text", "mail.text";

    SendUserMail("mail", body);

     }
else 
{
messge box = please enter the fld 
}

请告诉我如何编写验证以及如何执行验证?
请为我提供操作方法

我还需要验证码，所有txt flds plz

例如:如果用户单击提交，则必须查看是否已提交所有txt框.

Please tell me how can i write validation and how can i do this??
kindly provide me how to do it

i need validation code also all txt flds plz

example: if user clicks on submit it has to see all the txt boxes are filed or not

推荐答案

使用此javascript验证电子邮件地址

use this javascript to validate email address

function validateEmail(elementValue){
   var emailPattern = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}

/; 返回 emailPattern.test(elementValue); }

/; return emailPattern.test(elementValue); }

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