Thank you for writing.
If you want to change the image of GridHeaderItemButtonElement
, you can modify the theme that you are using with VisualStyleBuilder
Here is a detailed list of the steps you need to follow in order to change the desired color:
1. Open Visual Style Builder and load the ControlDefault theme (Loading predefined themes).
2. In the Controls Structure pane navigate to RadGridView >> right mouse click and select Show Grouping View >> GroupPanelElement>> GroupFieldElement>> HeaderItemButtonElement and select the ImagePrimitive item from the Elements Pane.
3. Further, set the Image property in the Elements pane or create a new image repository and apply it to the Image property.
4. Save the theme and load it in your application (Saving and Loading Theme Files, Loading Themes from an External File, Loading Themes from a Resource, Applying Theme to a Control).
Please refer to the recorded video. The video opens in a browser and requires Flash Player installed to play: http://screencast.com/t/qW6rbI7bTgw
More information about the process of creating a custom theme starting from an existing one can be found here: http://www.telerik.com/help/winforms/tools-visual-style-builder-control-specific-theme-tutorials-styling-radribbonbar.html
Here are some links that you might find useful:
I hope you find my answer useful. Let me know if you have any further queries. I will do my best to assist you.
the Telerik team