Question

I am a C++ developer and recently shifted to C#. I am working on a WPF app where I need to dynamically generate 4 radio buttons. I tried to do lot of RnD but looks like this scenario is rare.

XAML:

<RadioButton Content="Base 0x" Height="16" Name="radioButton1" Width="80" />

Now here is the scenario: I should generate this radio button 4 times with different Content as follows:

<RadioButton Content = Base 0x0 />
<RadioButton Content = Base 0x40 />
<RadioButton Content = Base 0x80 />
<RadioButton Content = Base 0xc0 />

I had done this in my C++ application as follows:

#define MAX_FPGA_REGISTERS 0x40;

for(i = 0; i < 4; i++)
{
    m_registerBase[i] = new ToggleButton(String(T("Base 0x")) + String::toHexString(i * MAX_FPGA_REGISTERS));       
    addAndMakeVisible(m_registerBase[i]);
    m_registerBase[i]->addButtonListener(this);
}
m_registerBase[0]->setToggleState(true); 

If you notice above, Every-time for loop runs Content name becomes Base 0x0, Base 0x40, base 0x80 and base 0xc0 and sets the toggle state of first radiobutton as true. Thus if you notice there will be single button click method for all these 4 buttons and based on index each will perform operation.

How can i achieve this in my WPF app? 🙂

Answer 1

I was going to write a set of code for you, but realized your question is probably already answered here:
WPF/C# – example for programmatically create & use Radio Buttons

It’s probably the cleanest way of doing it, depending on your requirements of course. If you want the simplest case, here it is:

Xaml:

<Window x:Class="WpfApplication1.MainWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="MainWindow" Height="350" Width="525">
    <Grid >
        <StackPanel x:Name="MyStackPanel" />

    </Grid>
</Window>

C#:

    public MainWindow()
    {
        InitializeComponent();

        for (int i = 0; i < 4; i++)
        {
            RadioButton rb = new RadioButton() { Content = "Radio button " + i, IsChecked = i == 0  };
            rb.Checked += (sender, args) => 
            {
                Console.WriteLine("Pressed " + ( sender as RadioButton ).Tag );
            };
            rb.Unchecked += (sender, args) => { /* Do stuff */ };
            rb.Tag = i;

            MyStackPanel.Children.Add( rb );
        }
    }

Just add in whatever logic you need for the content, tags and so on.