I'm having a problem with the RadPropertyGrid when bound to an indexed property. Getting the property works fine, but after changing the field, the setter never gets called. Attached is a simple test program. This program has a RadPropertyGrid bound to a simple string property and an indexed property. These same two properties are also bound to a TextBox. Notice that when the values in the TextBoxes are changed, the debug output shows that the setters are called and the values displayed in the RadPropertyGrid are properly updated. When the simple string is changed in the RadPropertyGrid, the debug output shows that the setter is called and the value displayed in the TextBox is properly updated. But, when the indexed property is changed in the RadPropertyGrid, the debug output does not show the setter getting called and the value displayed in the TextBox does not get updated. *** The support for collection indexer binding will be available with R2 2016.