ASP.NET C＃Web应用程序-复选框

Question

I have two checkboxes, what I want to do is, when I check one, the other should be disabled, I always do this in C# Windows application and it is my first try with ASP.NET is there a way to do that without using combocheckboxes? here is my method which does not work:

protected void checkplan0_CheckedChanged(object sender, EventArgs e)
{
    if (checkplan0.Checked == true)
    {
        checkplan1.Enabled = false;
    }
    if (checkplan0.Checked == false)
    {
        checkplan1.Enabled = true;

    }
}

Answer 1

Like others have said you'll need to have autopostback="true", also it might be worth considering using radio buttons, as only one radio button in a group can be checked at a time.

<asp:RadioButton id="radioplan0" Checked="True" GroupName="RadioPlan" runat="server" Autopostback="true" />
<asp:RadioButton id="radioplan1" Checked="False" GroupName="RadioPlan" runat="server" Autopostback="true" />

Then nothing needs to be added to the code behind to toggle the other options off.

Answer 2

Your code seems to be correct, as you mentioned that you are from windows form background I assume this is what you are missing

<asp:CheckBox 
      ID="checkplan0" 
      runat="server" 
      AutoPostBack="true" 
      OnCheckedChanged="checkplan0_CheckedChanged" />

Set AutoPostBack = "true" setting this true will mean on check of checkbox a postback will be sent to server and the code that you have written on Check Change will execute.

Answer 3

Your code seems good. But as you are beginner. You might be missing simple thing in source page.

=> Check whether Your AutoPostBack set to true for your checkbox. If not add AutoPostBack ="true"