I'm just starting to learn C#, from years of using C.

I have a little panel for my app, it is going to repeat itself a number of time the user selects (it is a little addition testing program for my son; my first C# app - a GUI panel with 2 numbers and you enter the answer and get a new problem).

I added a ComboBox to let the user select the number of times to repeat  10, 20 , 30, ....

I'd like to set the default value to the first in the list, 10. But, I can't figure out how to set it.

When the user selects a value in the ComboBox I'd like to have that call a function.
When I created the ComboBox, this was created, and I added the line of code in it:

        private void comboBox1_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            loop = 10 * (comboBox1.SelectedIndex);

        }

but it doesn't hit it when I set a break point there. Is this what this function is for? Or do I need to create something else?
Sort of like the buttons I created that call functions.

I am using C# WFP with .Net, and have a Window1.xaml where I created the panel by dragging text boxes and buttons and the combobox from the controls and modifying the properties.
The buttons have a "Click" value in the XMAL under the designer window, but I can't figure out how to get something similar for the ComboBox.

Thanks for help.
(if I'm using the wrong terminology, please correct me on that too)

If I understand correctly, you're just trying to associate your event handler...

If that's the case, you'll need to have your ComboBox event tied to your event handler.  You can do this in the property window of the designer, or directly in xaml, like so:


        <ComboBox Height="23" Name="comboBox1" SelectionChanged="comboBox1_SelectionChanged" >
            <ComboBoxItem>10</ComboBoxItem>
            <ComboBoxItem>20</ComboBoxItem>
            <ComboBoxItem>30</ComboBoxItem>
            <ComboBoxItem>40</ComboBoxItem>
            <ComboBoxItem>50</ComboBoxItem>
        </ComboBox>

This will make it call your method (comboBox1_SelectionChanged) on the SelectionChanged event.

---

Reed Copsey, Jr. - http://reedcopsey.com

Add SelectedIndex to the xaml:

       <ComboBox Height="23" Name="comboBox1" SelectedIndex="0" SelectionChanged="comboBox1_SelectionChanged" >
            <ComboBoxItem>10</ComboBoxItem>
            <ComboBoxItem>20</ComboBoxItem>
            <ComboBoxItem>30</ComboBoxItem>
            <ComboBoxItem>40</ComboBoxItem>
            <ComboBoxItem>50</ComboBoxItem>
        </ComboBox>

---

Reed Copsey, Jr. - http://reedcopsey.com

If I understand correctly, you're just trying to associate your event handler...

If that's the case, you'll need to have your ComboBox event tied to your event handler.  You can do this in the property window of the designer, or directly in xaml, like so:


        <ComboBox Height="23" Name="comboBox1" SelectionChanged="comboBox1_SelectionChanged" >
            <ComboBoxItem>10</ComboBoxItem>
            <ComboBoxItem>20</ComboBoxItem>
            <ComboBoxItem>30</ComboBoxItem>
            <ComboBoxItem>40</ComboBoxItem>
            <ComboBoxItem>50</ComboBoxItem>
        </ComboBox>

This will make it call your method (comboBox1_SelectionChanged) on the SelectionChanged event.

---

Reed Copsey, Jr. - http://reedcopsey.com

That's it exactly.

The only thing is, how do I set the default value to the first one, the 10?

Add SelectedIndex to the xaml:

       <ComboBox Height="23" Name="comboBox1" SelectedIndex="0" SelectionChanged="comboBox1_SelectionChanged" >
            <ComboBoxItem>10</ComboBoxItem>
            <ComboBoxItem>20</ComboBoxItem>
            <ComboBoxItem>30</ComboBoxItem>
            <ComboBoxItem>40</ComboBoxItem>
            <ComboBoxItem>50</ComboBoxItem>
        </ComboBox>

---

Reed Copsey, Jr. - http://reedcopsey.com

Great.
That does it.
Thanks