error when using checkboxes and radio buttons

Question

3.67/5 (3 votes)

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I was trying to implement a small piece of code for my checkbox within a method using wpf, and i got this error.

"

VB

Error   1   The event;System.Windows.Controls.Primitives.ToggleButton.Checked& can only appear on the left hand side of += or -= "

C#

public void test()
{

if (checkBox1.Checked)
                   {
                      MessageBox.Show("checkbox is checked now");
                     }
else
{
MessageBox.Show("checkbox is unchecked now");
}
}

Any help would be much appreciated. Thanks

Posted 13-Sep-11 8:11am

steersteer

Updated 13-Sep-11 8:16am

v2

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BillW33 · Answer 1 · 2011-09-13T08:22:00

Solution 1

checkBox1.Checked is the event which is generated when the state of the checkbox is changed. checkBox1.IsChecked is the state of the checkbox.
So to determine the current state of the checkbox use

if (checkBox1.IsChecked)

Posted 13-Sep-11 8:22am

BillW33

Comments

steersteer 13-Sep-11 14:26pm

Thanks

steersteer 13-Sep-11 14:44pm

thanks. Could you please tell me how to uncheck the checkbox once after the messagebox is displayed ? ( i tried checkbox1.ischecked == false but that didn't work. I want the checkbox to be unchecked if it is checked and checked if it is not checked.

BillW33 13-Sep-11 15:03pm

That should be checkbox1.IsChecked = false; note that there only 1 equals sign.

If this solution answers your question you should mark it as the answer. :)