webform验证textbox只准输入数字

来源：互联网发布：手机沙箱软件编辑：程序博客网时间：2024/05/21 13:53

一、利用javascript

<asp:TextBox id="TextBox1" onkeyup="value=value.replace(/[^/d]/g,'')" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/[^/d]/g,''))"
style="Z-INDEX: 101; LEFT: 264px; POSITION: absolute; TOP: 96px" runat="server" Width="224px"></asp:TextBox>

二、利用RegularExpressValidator
   <asp:TextBox id="TextBox2" style="Z-INDEX: 102; LEFT: 296px; POSITION: absolute; TOP: 224px"
    runat="server" Width="280px"></asp:TextBox>
   <asp:RegularExpressionValidator id="RegularExpressionValidator1" style="Z-INDEX: 103; LEFT: 320px; POSITION: absolute; TOP: 384px"
    runat="server" ErrorMessage="RegularExpressionValidator" ValidationExpression="^/d*" ControlToValidate="TextBox2">test</asp:RegularExpressionValidator>

上述是只准输入数字

限制输入位数5

<asp:RegularExpressionValidator id="RegularExpressionValidator1" runat="server" ControlToValidate="TextBox1" ValidationExpression="^/d{5}$" Display="Static" Font-Name="verdana" Font-Size="10pt" EnableClientScript="False">

if (Page.IsValid)
   {
    lblOutput.Text = "页有效！";
   }
   else
   {
    lblOutput.Text = "页无效！";
   }