We are using VS 2005 and Syncfusion 4.2.0.37.
In our database, the last column happens to be an int datatype. In the attached sample, please connect to any database and try to have the last column as a number type entry. You can drag a column to be the last column.
While running the program, type an alpha character in the last column. The error will be detected, a message box is displayed, an error provider is show in the cell. Now the problem. Try to focus the cell to correct the error. The cell will not permit focus. The workaround is to drag the last column to the left, then the input disappears and you can edit the column again. However, this is NOT acceptable. We should be able to correct an error no matter which column it is in.
Under normal conditions, we can edit the last column. However, setting the SelectionMode property to anything other than NONE causes the error. (See Form1.cs)
gridGroupingControl1.TableOptions.ListBoxSelectionMode = SelectionMode.MultiExtended;
GroupingGridErrorLastColumn.zip