DataGrid validation, where is the error message?

Sep 10, 2014 at 9:27 AM
When using validation in DataGrid, the nice red message (that I provide via IDataErrorInfo interface) indicating an illegal input value of a cell almost never shows up. It actually shows up in a specific situation, where the illegal value is there initially when loading the data model. But it never shows when I am actually modifying the cells.

The red box around the cell is there, so I know the validation implementation works.

Any thoughts?

Dec 10, 2014 at 7:28 PM
Same issue here. I can't get any validations displaying from within a DataGrid.
Dec 13, 2014 at 10:10 AM
Most likely related to, which is about the GridView template in the ListView control.