Senior Member
AutoPostBack Property C sharp: AutoPostBack Property
Why we use "AutoPostBack Property" in C#. What is syntax for this property of C#? As C # is very difficult as compare to Java language. If you have any information about the AutoPostBack Property, then please inform me. Any help would be highly appreciated.Thanxs.
Senior Member
It's the AutoPostBack property that really does all the magic here. Whenever a control loses focus, if the value of the control has changed, the page is automatically resubmitted (or posted back) to the server so the page can process the new values.
Try to understand code given below which is helpful for you.
<%@ Page Language="VB" %>
<script language="VB" runat="server">
Sub Page_Load(Sender As Object, E As EventArgs)
' Set the text of the label controls to reflect the
' values entered or selected in the form.
If myCheckBox.Checked Then
lblCheckBox.Text = "checked"
Else
lblCheckBox.Text = "did not check"
End If
lblTextBox.Text = myTextBox.Text
lblDropDownList.Text = myDropDownList.SelectedItem.Value
End Sub
</script>
<html>
<head>
<title>ASP.NET AutoPostBack Sample</title>
</head>
<body>
<form runat="server">
<asp:TextBox id="myTextBox" runat="server"
AutoPostBack="True"
/>
<aspropDownList id="myDropDownList" runat="server"
AutoPostBack="True"
>
<asp:ListItem>Item 1</asp:ListItem>
<asp:ListItem>Item 2</asp:ListItem>
<asp:ListItem>Item 3</asp:ListItem>
<asp:ListItem>Item 4</asp:ListItem>
<asp:ListItem>Item 5</asp:ListItem>
<asp:ListItem>Item 6</asp:ListItem>
</asp
<asp:CheckBox id="myCheckBox" runat="server"
AutoPostBack="True"
/>
<p>
You entered
"<asp:Label id="lblTextBox" runat="server" />"
in the text box, selected
"<asp:Label id="lblDropDownList" runat="server" />"
from the drop down list, and
<asp:Label id="lblCheckBox" runat="server" />
the checkbox.
</p>
</form>
<hr />
</body>
</html>
Last edited by nitesh14; 02-06-2010 at 04:08 PM.
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