Question

I deleted the CodeBehind of my MainWindow.xaml, cause I’m doing a small project where I literally must do that.

So I’m creating an instance of my ViewModel in this way over xaml:

<Grid.DataContext>
    <lib:StartPageViewModel />
</Grid.DataContext>

Well now, I need this DataContext in my Code (StartPageViewModel), as I want to open an other solution (For more Informations take a look here).

Any Ideas, on how I can get this DataContext?

Answer 1

At least I solved the problem.
Actually I didn’t really need to use the DataContext for this:

    public static DTE2 GetDTE(DataContext dataContext)
    {
        ICustomTypeDescriptor typeDescriptor = dataContext as ICustomTypeDescriptor;
        Debug.Assert(typeDescriptor != null, "Could not get ICustomTypeDescriptor from dataContext. Was the Start Page tool window DataContext overwritten?");
        PropertyDescriptorCollection propertyCollection = typeDescriptor.GetProperties();
        return propertyCollection.Find("DTE", false).GetValue(dataContext) as DTE2;
    }

I changed the code to the following, it works now perfectly, I can open Solutions without using the DataContext:

    public static DTE2 GetDTE()
    {
        return (DTE2)System.Runtime.InteropServices.Marshal.GetActiveObject("VisualStudio.DTE");
    }