CheckBox problem

[tomas.zeman]

I have 2 controls, ComboBox, CheckBox.

My scenario:
User decides whether he checkes CheckBox or not. Checked state is valid only if an item in ComboBox is selected. I Want to display an error message when user tries to check CheckBox without selecting item in ComboBox

My first idea...
in onclick event of checkBox

Code: Select all

if(control.Checked && !isSomethingSelected)
{
DisplayError("Please select an item.");   //Windows.Forms.MessageBox.Show(...);
control.Checked= false;
return;
}

Unfortunatelly, this doen't work, checkbox stays checked.

How can i achieve this functionality? Thanks for any help

[justin.greenwood]

Is this for a template input interface form? Can you paste more of the code in so I Can see it in context?

[tomas.zeman]

Thanks for answer and care Justin, I decided to stop any experiments with zeup API after I made source inspection via reflector. Everything is wired(controls, events etc.), I cannot profit from inheritance, designer and that problems i posted cannot be solved in this framework. I just finish set of win form picker controls above MyMeta with cascading behavior that are richer, nicer than any COPY&PASTEd lame zeus gui code spreaded through existing templates and I'm able to create GUI for templates more quickly, with less(less less less of code and with designer support. ZEUS API was good for people who wanted to create simple GUI and don't wanted to buy VS ... before VS EXPRESS C# was released.