public void InsertToMultipleCollectionsOne2 ()
		{
			ColumnDefinitionCollection c = new Grid ().ColumnDefinitions;
			ColumnDefinition d = new ColumnDefinition ();
			c.Insert (0, d);
			c.Remove (d);
			c = new Grid ().ColumnDefinitions;
			c.Insert (0, d);
		}
		public void InsertNull ()
		{
			ColumnDefinitionCollection c = new Grid ().ColumnDefinitions;
			c.Insert (0, null);
		}
		public void InsertInMultipleCollections ()
		{
			ColumnDefinitionCollection c1 = new Grid ().ColumnDefinitions;
			ColumnDefinitionCollection c2 = new Grid ().ColumnDefinitions;
			ColumnDefinition d = new ColumnDefinition ();
			c1.Insert (0, d);
			c2.Insert (0, d);
		}
		public void InsertTwice ()
		{
			ColumnDefinitionCollection c = new Grid ().ColumnDefinitions;
			ColumnDefinition d = new ColumnDefinition ();
			c.Insert (0, d);
			c.Insert (0, d);
		}