📄 validateexample.aspx
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<html>
<head>
<title>ValidatorExample</title>
<script Language="C#" runat="server">
void OnSubmit(object sender, EventArgs arg)
{
if(Page.IsValid)
{
txtNumber3.Text = (Double.Parse(txtNumber1.Text)
+ Double.Parse(txtNumber2.Text)).ToString();
}
}
</script>
</head>
<body>
<h3>验证控件示例</h3>
<form id="form1" runat="server">
加数一
<asp:TextBox id="txtNumber1" runat="server" />
<asp:RequiredFieldValidator id="RequiredField1"
runat="server" ControlToValidate="txtNumber1"
Text="必须输入内容" forecolor="red"
EnableClientScript="true" />
<asp:CompareValidator id="Compare1"
runat="server" ControlToValidate="txtNumber1"
Operator="DataTypeCheck" Type="Double"
Text="必须输入一个数字" forecolor="red" />
<br>
加数二
<asp:TextBox id="txtNumber2" runat="server" />
<asp:RequiredFieldValidator id="RequiredField2"
runat="server" ControlToValidate="txtNumber2"
Text="必须输入内容" forecolor="red"
EnableClientScript="false" />
<asp:CompareValidator id="Compare2"
runat="server" ControlToValidate="txtNumber2"
Operator="DataTypeCheck" Type="Double"
Text="必须输入一个数字" forecolor="red" />
<br>
结果
<asp:TextBox id="txtNumber3" runat="server" /><br>
<asp:Button id="Button1" runat="server"
OnClick="OnSubmit" Text="相加"/>
</form>
</body>
</html>
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