如何为文本框提供验证? [英] How to provide validation for textbox?

问题描述

您好专家


如何为接受至少6个字符的文本框提供验证

Hello Experts


How to provide validation for text box accepting minimum 6 character

推荐答案

我们在谈论ASP .NET bere吗?如果是的话，有两种方法可以实现

1.使用JavaScript调用函数(请参阅解决方案1)

2.使用正则表达式验证

Are we talking ASP .NET bere ? if yes, there are two ways of doing it

1. Using JavaScript to call a function (See solution 1)

2. Using Regular Expressions Validation

<asp:regularexpressionvalidator id="valPassword" runat="server" xmlns:asp="#unknown">
   ControlToValidate="txtPassword"
   ErrorMessage="Minimum password length is 5"
   ValidationExpression=".{5}.*" /</asp:regularexpressionvalidator>

尝试如下操作:-

trye something like this:-

if(textBox1.length < 6)
{
    MessageBox.Show("Value should be more than 6 characters long");
}

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