I'm replacing my property grid with something that will allow me to customize my UI a bit better. I placed a button on my form that I hope when clicked would pop up a CollectionEditor and allow me to modify my code. When I was using the PropertyGrid, all I needed to do was add some attributes to the property pointing to my CollectionEditor and it worked. But how do I invoke the CollectionEditor manually? Thanks!
A:
Found the answer here: http://www.devnewsgroups.net/windowsforms/t11948-collectioneditor.aspx
Just in case the site linked above goes away some day, here's the gist of it. The code is verbatim from the link above, however; the comments are mine.
Assume you have a form with a ListBox and a button. If you wanted to edit the items in the ListBox using the CollectionEditor, you would do the following in your EventHandler:
private void button1_Click(object sender, System.EventArgs e)
{
//listBox1 is the object containing the collection. Remember, if the collection
//belongs to the class you're editing, you can use this
//Items is the name of the property that is the collection you wish to edit.
PropertyDescriptor pd = TypeDescriptor.GetProperties(listBox1)["Items"];
UITypeEditor editor = (UITypeEditor)pd.GetEditor(typeof(UITypeEditor));
RuntimeServiceProvider serviceProvider = new RuntimeServiceProvider();
editor.EditValue(serviceProvider, serviceProvider, listBox1.Items);
}
Now the next thing you need to do is to create the RuntimeServiceProvider(). This is the code the poster in the link above wrote to implement this:
public class RuntimeServiceProvider : IServiceProvider, ITypeDescriptorContext
{
#region IServiceProvider Members
object IServiceProvider.GetService(Type serviceType)
{
if (serviceType == typeof(IWindowsFormsEditorService))
{
return new WindowsFormsEditorService();
}
return null;
}
class WindowsFormsEditorService : IWindowsFormsEditorService
{
#region IWindowsFormsEditorService Members
public void DropDownControl(Control control)
{
}
public void CloseDropDown()
{
}
public System.Windows.Forms.DialogResult ShowDialog(Form dialog)
{
return dialog.ShowDialog();
}
#endregion
}
#endregion
#region ITypeDescriptorContext Members
public void OnComponentChanged()
{
}
public IContainer Container
{
get { return null; }
}
public bool OnComponentChanging()
{
return true; // true to keep changes, otherwise false
}
public object Instance
{
get { return null; }
}
public PropertyDescriptor PropertyDescriptor
{
get { return null; }
}
#endregion
}
Jason Thompson
2010-09-28 20:02:16