Trying to make an image column sortable in our DataGridView - all that's displayed is System.Drawing.Bitmap instead of the image

Have tried following the advice in the MSDN article: How开发者_如何学Go to: Customize Data Formatting in the Windows Forms DataGridView Control but when the form is shown all that's displayed in each cell is System.Drawing.Bitmap.

Must be something basic we're doing wrong.

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Resolved - nothing wrong with the cell formatting code in the MSDN article. But in our version our column was of type DataGridViewTextBoxColumn when of course what's needed is a DataGridViewImageColumn.