private void btnEditField_Click(object sender, EventArgs e)
		{
			EntityField field = (EntityField) GetSelectedItemOfType(typeof (EntityField));
			if (field != null)
			{
				IObjectEditor editor = new OREntityFieldEditor(field);
				ObjectEditorManager.OpenObjectEditorDialog(editor);
				this.designView.RefreshFieldsList(this.GetSelectedNodeOfType(typeof(EntityFieldCollection)), this.designView.CurrentEntity, false);
			}
		}
		private void btnAddField_Click(object sender, EventArgs e)
		{
			EntityFieldCollection fields = (EntityFieldCollection) GetSelectedItemOfType(typeof (EntityFieldCollection));
			EntityField oField = new EntityField();
			fields.Add(oField);
			IObjectEditor editor = new OREntityFieldEditor(oField);
			ObjectEditorManager.OpenObjectEditorDialog(editor);
			this.designView.RefreshFieldsList(this.GetSelectedNodeOfType(typeof(EntityFieldCollection)), this.designView.CurrentEntity, false);
		}