## Custom Column
This example demonstrates how to implement custom column inherited from GridViewDataColumn. A custom progress column has been created by overriding GridViewDataColumn's CreateCellElement and CreateCellEditElement methods.

More details can be found in our online help:
For WPF - http://docs.telerik.com/devtools/wpf/controls/radgridview/columns/how-to/add-button-column
For SL - http://docs.telerik.com/devtools/silverlight/controls/radgridview/columns/how-to/add-button-column

[//]: <KeyWords: gridviewdatacolumn, progress, createcellelement, createcelleditelement>