How to bring up a calendar in ASP. NET

Source code of ctlCalendar. ascx:
Copy codeThe Code is as follows:
<% @ Control Language = "c #" AutoEventWireup = "false" Codebehind = "ctlCalendar. ascx. cs "Inherits =" calendar. ctlCalendar "TargetSchema =" http://schemas.microsoft.com/intellisense/ie5 "enableViewState =" True "%>
<Asp: textbox id = "TextBox1" runat = "server"> </asp: textbox>
<Input type = "button" id = "Button1" runat = "server" value = "..."> <br>
<Asp: Panel id = "pnlCalendar" runat = "server" style = "POSITION: absolute">
<Asp: calendar id = "Calendar1" runat = "server" FirstDayOfWeek = "Monday" ShowGridLines = "True" BackColor = "White"
DayNameFormat = "Full" ForeColor = "Black" Font-Size = "8pt" Font-Names = "Verdana" BorderColor = "#999999"
CellPadding = "4" Width = "200px" Height = "180px">
<TodayDayStyle ForeColor = "Black" BackColor = "# CCCCCC"> </TodayDayStyle>
<SelectorStyle BackColor = "# CCCCCC"> </SelectorStyle>
<DayStyle Wrap = "False" BorderStyle = "Dashed"> </DayStyle>
<NextPrevStyle VerticalAlign = "Bottom"> </NextPrevStyle>
<DayHeaderStyle Font-Size = "X-Small" Font-Names = "" Wrap = "False" BorderStyle = "Dashed" BackColor = "# CCCCCC"> </DayHeaderStyle>
<SelectedDayStyle Font-Bold = "True" ForeColor = "White" BackColor = "#666666"> </SelectedDayStyle>
<TitleStyle Font-Size = "Small" Font-Bold = "True" BorderStyle = "Solid" BorderColor = "Black" BackColor = "#999999"> </TitleStyle>
<WeekendDayStyle BackColor = "LightSteelBlue"> </WeekendDayStyle>
<OtherMonthDayStyle ForeColor = "Gray"> </OtherMonthDayStyle>
</Asp: calendar>
</Asp: Panel>

Source code of ctlCalendar. ascx. cs:
Copy codeThe Code is as follows:
Namespace calendar
{
Using System;
Using System. Data;
Using System. Drawing;
Using System. Web;
Using System. Web. UI. WebControls;
Using System. Web. UI. HtmlControls;
/// <Summary>
/// Summary of ctlCalendar.
/// </Summary>
Public class ctlCalendar: System. Web. UI. UserControl
{
Protected System. Web. UI. WebControls. TextBox TextBox1;
Protected System. Web. UI. WebControls. Panel pnlCalendar;
Protected System. Web. UI. HtmlControls. HtmlInputButton Button1;
Protected System. Web. UI. WebControls. Calendar Calendar1;
Private void Page_Load (object sender, System. EventArgs e)
{
// Place user code here to initialize the page
If (! Page. IsPostBack)
{
This. TextBox1.Text = System. DateTime. Now. tow.datestring ();
This. pnlCalendar. Attributes. Add ("style", "DISPLAY: none; POSITION: absolute ");
}
Else
{
String id = Page. request. form ["_ EVENTTARGET"]. substring (0, Page. request. form ["_ EVENTTARGET"]. indexOf (":"));
If (id! = This. ID)
{
This. pnlCalendar. Attributes. Add ("style", "DISPLAY: none; POSITION: absolute ");
}
Else
{
This. pnlCalendar. Attributes. Add ("style", "POSITION: absolute ");
}
}
Page. RegisterClientScriptBlock ("Script_Panel" + this. ID,
"<Script> function On" + this. ID + "Click () {if (" + this. ID +
"_ PnlCalendar. style. display =" none ")" + this. ID +
"_ PnlCalendar. style. display =" "; else" + this. ID +
"_ PnlCalendar. style. display =" none ";}</script> ");
This. Button1.Attributes. Add ("OnClick", "On" + this. ID + "Click ()");
}
# Code generated by region Web Form Designer
Override protected void OnInit (EventArgs e)
{
//
// CODEGEN: This call is required by the ASP. NET Web form designer.
//
InitializeComponent ();
Base. OnInit (e );
}
/// <Summary>
/// The designer supports the required methods-do not use the code editor
/// Modify the content of this method.
/// </Summary>
Private void InitializeComponent ()
{
This. Calendar1.SelectionChanged + = new System. EventHandler (this. calendar#selectionchanged );
This. Load + = new System. EventHandler (this. Page_Load );
}
# Endregion
# Events Selected by region calendar
Private void calendar#selectionchanged (object sender, System. EventArgs e)
{
This. TextBox1.Text = Calendar1.SelectedDate. tow.datestring ();
This. pnlCalendar. Attributes. Add ("style", "DISPLAY: none; POSITION: absolute ");
}
# Endregion
}
}