ASP.Net 2.0 Training : ASP.Net Checkbox

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CheckBox

The CheckBox control is used to display a check box.

Property	Description
AutoPostBack	A Boolean value that specifies whether the form should be posted immediately after the Checked property has changed or not. Default is false
Checked	A Boolean value that specifies whether the check box is checked or not
id	A unique id for the control
OnCheckedChanged	The name of the function to be executed when the Checked property has changed
runat	Specifies that the control is a server control. Must be set to "server"
Text	The text next to the check box
TextAlign	On which side of the check box the text should appear (right or left)

Try this:

1	<script runat="server">
2	Sub Check(sender As Object, e As EventArgs)
3	if check1.Checked then
4	work.Text=home.Text
5	else
6	work.Text=""
7	end if
8	End Sub
9	</script>
10	<html>
11	<body>
12	<form runat="server">
13	<p>Home Phone:
14	<asp:TextBox id="home" runat="server" />
15	<br />
16	Work Phone:
17	<asp:TextBox id="work" runat="server" />
18	<asp:CheckBox id="check1" Text="Same as home phone" TextAlign="Right" AutoPostBack="True" OnCheckedChanged="Check" runat="server" />
19	</p>
20	</form>
21	</body>
22	</html>

Save as: Checkbox.aspx

Open Visual Studio
Add a new webform
Name it checkbox.aspx
Click the Add button
Select the Design View
Add 2 labels and 2 textbox controls
Add a checkbox control

Change the text of the labels to:

Home Phone:
Work Phone:

Change the id property of the textboxes to:

Home
Work

Change the id of the checkbox to:

Check1

Change the text of the checkbox to:

Same as home phone

Change the textAlign property to right
Change AutoPostBack to true

Double-click the checkbox
Add this code:

        If Check1.Checked Then
            work.Text = home.Text
        Else
            work.Text = ""
        End If

Test it by pressing CTRL + F5

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