📄 panel1_cs.aspx
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<html>
<head>
<script language="C#" runat="server">
void Page_Load(Object sender, EventArgs e) {
// Show/Hide Panel Contents
if (Check1.Checked) {
Panel1.Visible=false;
}
else {
Panel1.Visible=true;
}
// Generate label controls
int numlabels = int.Parse(DropDown1.SelectedItem.Value);
for (int i=1; i<=numlabels; i++) {
System.Web.UI.WebControls.Label l = new System.Web.UI.WebControls.Label();
l.Text = "Label" + i.ToString();
l.ID = "Label" + i.ToString();
Panel1.Controls.Add(l);
Panel1.Controls.Add(new LiteralControl("<br>"));
}
// Generate textbox controls
int numtexts = int.Parse(DropDown2.SelectedItem.Value);
for (int i=1; i<=numtexts; i++) {
System.Web.UI.WebControls.TextBox t = new System.Web.UI.WebControls.TextBox();
t.Text = "TextBox" + i.ToString();
t.ID = "TextBox" + i.ToString();
Panel1.Controls.Add(t);
Panel1.Controls.Add(new LiteralControl("<br>"));
}
}
</script>
</head>
<body>
<h3><font face="Verdana">Panel Example</font></h3>
<form runat=server>
<asp:Panel id="Panel1" runat="server"
BackColor="gainsboro"
Height="200px"
Width="300px">
Panel1: Here is some static content...
<p>
</asp:Panel>
<p>
Generate Labels:
<asp:DropDownList id=DropDown1 runat="server">
<asp:ListItem Value="0">0</asp:ListItem>
<asp:ListItem Value="1">1</asp:ListItem>
<asp:ListItem Value="2">2</asp:ListItem>
<asp:ListItem Value="3">3</asp:ListItem>
<asp:ListItem Value="4">4</asp:ListItem>
</asp:DropDownList>
<br>
Generate TextBoxes:
<asp:DropDownList id=DropDown2 runat="server">
<asp:ListItem Value="0">0</asp:ListItem>
<asp:ListItem Value="1">1</asp:ListItem>
<asp:ListItem Value="2">2</asp:ListItem>
<asp:ListItem Value="3">3</asp:ListItem>
<asp:ListItem Value="4">4</asp:ListItem>
</asp:DropDownList>
<p>
<asp:CheckBox id="Check1" Text="Hide Panel" runat="server"/>
<p>
<asp:Button ID="Button1" Text="Refresh Panel" runat="server"/>
</form>
</body>
</html>
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