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<%@ Page Language="C#" %>
<%@ Import Namespace="System.Drawing" %>
<script runat="server">
protected void TextBox1_TextChanged(object sender, EventArgs e)
{
Label1.Text = "你输入了" + this.TextBox1.Text.Trim().Length + "个字符";
Label1.ForeColor = this.TextBox1.Text.Trim().StartsWith("1234") ? Color.Red : Color.Black;
}
protected void LinkButton1_Click(object sender, EventArgs e)
{
this.Label1.Text = string.Format("{0}--->{1}", this.TextBox1.Text, this.TextBox2.Text);
UpdatePanel1.Update();
}
</script>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td>
输入1:
<asp:TextBox ID="TextBox1" runat="server" OnTextChanged="TextBox1_TextChanged" TextMode="Password"></asp:TextBox>
</td>
<td>
<asp:UpdatePanel runat="server" ID="UpdatePanel1" UpdateMode="Conditional">
<ContentTemplate>
<asp:Button ID="Button1" runat="server" Text="验证" />
<asp:Label ID="Label1" runat="server" Text=""></asp:Label>
</ContentTemplate>
</asp:UpdatePanel>
</td>
</tr>
</table>
<asp:UpdatePanel runat="server" ID="UpdatePanel2" UpdateMode="Conditional">
<ContentTemplate>
输入2:
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
<br />
<asp:LinkButton ID="LinkButton1" runat="server" OnClick="LinkButton1_Click">LinkButton</asp:LinkButton>
</ContentTemplate>
</asp:UpdatePanel>
</form>
</body>
</html>