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<body>
<form id="form1" runat="server"> <asp:TextBox ID="txtInt" runat="server"></asp:TextBox> <asp:CustomValidator ID="CustomValidator1" runat="server" ClientValidationFunction="validate_Integer" Display="Dynamic" ErrorMessage="<img src='Images/check_error.gif' style='width:13px;height:13px;'>" > </asp:CustomValidator><br /> <asp:Button ID="Button1" runat="server" Text="Button" /> </form> </body> 其中调用javascript函数validate_Integer,所以在<head></head>之间插入脚本代码
<script type="text/javascript" language="javascript">
function isInteger(s) { var i; for (i = 0; i < s.length; i++) { //检测字符是否为数字 var c = s.charAt(i); if (((c < "0") || (c > "9"))) return false; } return true; } function validate_Integer(source, args) { var txtintval=document.getElementById("<%= txtInt.ClientID %>"); if(!isInteger (txtintval.value)) { args.IsValid=false; } else { args.IsValid=true; } } </script> 二、使用RequiredFieldValidator进行非空验证 1、传统的验证方式 通过设置其ErrorMessage属性指定验证错误提示信息
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> 2.弹出JavaScript的提示窗口<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="TextBox1" EnableClientScript="False" ErrorMessage="*输入字段不能为空！" > </asp:RequiredFieldValidator> 只需要将验证控件的Text属性赋上一句JavaScript代码
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="TextBox2" EnableClientScript="False" ErrorMessage="RequiredFieldValidator" Text="<script type='text/javascript'>alert('*输入字段不能为空！')</script>" > </asp:RequiredFieldValidator> 3.带声音提示的验证，此时也可以用图片做为错误提示信息 <body> <form id="form1" runat="server"> <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox> <asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" ControlToValidate="TextBox3" EnableClientScript="False" ErrorMessage="RequiredFieldValidator" Text="<bgsound src='demo1.wav'>"> </asp:RequiredFieldValidator> <asp:Button ID="Button1" runat="server" Text="Button" /> </form> </body> 来自：http://www.cnblogs.com/beniao/archive/2008/07/06/1236330.html |
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