DataGridView throwing Exception in Default Error Dialog due to DataGridViewImageColumn

Question

I am putting this up because it took far too long to find the answer on the web and this is probably a common problem - it is the second time i have experienced it on my app.

Answer 1

This problems is caused by some image and varbinary column types, my solution was creating other data datatable and setting all columns and cell values to string type:

            var clonedDT = dt.Clone();

            for (int i = 0; i < clonedDT.Columns.Count; i++)
            {
                clonedDT.Columns[i].DataType = typeof(String);
            }


            for (int j = 0; j < dt.Rows.Count;j++ )
            {
                var newRow = clonedDT.NewRow();
                for (int i = 0; i < dt.Columns.Count; i++)
                {                        
                    newRow.SetField(i, Convert.ToString(item.Value.Rows[j]  [i]));
                }

                clonedDT.Rows.Add(newRow); 
            }