wpf datagrid image

Question

Hai all...

I have a wpf datagrid with 5 columns let's say...the fifth column is a datagrid template column where i have attached a image in it....In that image previewmousekey up event i have coded to open an another form..My issue is in the save button of other form i want to change the image of the datagrid 5 th column...where i clicked....

Something like a noteicon...where note not present image  will be displayed in datagris 5th column...when i click it it will open a small note enter text form where i will write the note for it ..when i save it the image should change to note present image...


Thanks in advance......