文本框验证，以避免重复输入 [英] TextBox Validation for avoiding redundant entry

问题描述

我有5个文本框，用于输入emailId，
我需要对每个文本框和
进行电子邮件验证 我应该验证文本框，以使我在1st或任何其他文本框中输入的mailId不应在任何其他文本框中重复.

例如:

TextBox1:[e-mail]
TextBox2:[e-mail]
TextBox3:[e-mail]
TextBox4:[e-mail]
TextBox5:[e-mail]

这里的Textbox1& Textbox5具有相同的ID，但不应相同.
我如何在Asp.net中进行验证.



问候，
yuva

Hi,

I hav 5 textboxes, for entrying emailId''s,
i need to have email validation for each textbox and
i should validate the textbox, in such a way that the mailId which i enter in 1st or any other textbox should not repeat in any other text box.

Ex:

TextBox1 :- [e-mail]
TextBox2 :- [e-mail]
TextBox3 :- [e-mail]
TextBox4 :- [e-mail]
TextBox5 :- [e-mail]

Here the Textbox1 & Textbox5 are having the same Id, but it should not.
How do i validate in Asp.net.



Regards,
yuva

推荐答案

取决于您在哪里做.
如果验证是在服务器端:

Depends on where you are doing it.
If the validation is server side:

List<string> list = new List<string>();
public void RunSnippet()
{
    Add("abc");
    Add("abd");
    Add("abc");
}
void Add(string s)
{
    if (list.Contains(s))
        Console.WriteLine("Exists :" + s);
    else
    {
        list.Add(s);
        Console.WriteLine(s);
    }
}

将报告"abc"第二次存在.
请记住，您将希望它们是不区分大小写的比较！

Will report that "abc" exists the second time.
Remember that you will want these to be case insensitive comparisions!

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