ASP.NET Checkbox.Checked is not working

Question

In asp.net Webforms I have a CheckBox and Button.

<asp:CheckBox ID="checkBox" runat="server" />
<asp:Button ID="Button1" runat="server" Text="Check" OnClick="Button1_Click"/>

I want to handle Checkbox's check status with ButtonClick. But it is only getting false value.

if (checkBox.Checked == (true))
{
    Label1.Text = "Selected";
}
else
{
    Label1.Text = "Not Selected";
}

After every click I am getting Not Selected in my Label. I think this is so basic but now I couldn't fix.

Is there anyway to fix this.

Answer 1

Not sure if this has been solved, this is beacause Autopostback is not enabled. Change it to below

    asp:CheckBox ID="checkBox" AutoPostBack=“true” runat="server"  ```