silverlight: How to set attached properties Programmatically

问题

Suppose I have a grid with some row definitions, and a child control in that grid. How would I go about setting the Grid.Row property of the child control programatically?

回答1:

To set the value:

textBlock.SetValue(Grid.RowProperty, 3);

To reset the value:

textBlock.SetValue(Grid.RowProperty, null);

回答2:

Actually to clear a value you should use this:

textBlock.ClearValue(Grid.RowProperty);

回答3:

I'm not 100% sure this is in SilverLight, but in WPF you call a static method (called SetX, where X is the property) on the type the attached property is defined on and pass it in which control to set the value on, and the value:

Grid.SetRow(MyControl, myRowNumber); 

来源：https://stackoverflow.com/questions/425537/silverlight-how-to-set-attached-properties-programmatically