I have some UserControls named a1, a2, b1, b2... and I want to load one of them depending of the value of two variables. For example, if var1 = a, var2 = 1, the UserControl named a1 will be loaded.
Is there a way of doing this? Perhaps some other alternate approach?
A switch statement is not a viable option here, because there will be like 200 different UserControls.
You can use .NET Reflection to load a control by its String value.
you can use some code like this to create the object on the fly.
using System.Reflection;
namespace WpfApplication1
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
//this is the full namespace name of UserControl.
// you could use something like String.Format("WpfApplication1.{0}", "uc1") to put in a function and pass through.
string ucName = "WpfApplication1.uc1";
Type newType = Type.GetType("WpfApplication1.uc1", true, true);
object o = Activator.CreateInstance(newType);
//Use the object to how ever you like from here on wards.
}
}
}
You can use Activator.CreateInstance to create the UserControl instance from string name of the type.
But you would better solve this with styling or control templates - these are both great tools to reduce amount of code and its complexity in WPF.
A powerful possibility is to use XamlReader to create your controls.
In your example this is not a desired, but a big advantage of using the xaml-reader is that you can also initialize properties of your control during initialization through the xamlReader.
