how to programatically edit the cell value of a datagridview in virtual mode?
c#, datagridview, editing, virtual, winforms
Solution
When you use virtual mode, you provide your own logic for linking the `DataGridView` to the underlying data source. So, to edit a cell value, you should change the value in the underlying data source, and call `Refresh` to refresh the displayed value (this will cause the `CellValueNeeded` event to be called for all displayed cells)
Problem
I have a DataGridView in virtual mode. I only implemented the CellValueNeeded eventhandler as described in http://msdn.microsoft.com/en-us/library/15a31akc.aspx. Implementing the rest of the events only seems needed when you want to be able to edit the cells manually. I would like to programatically edit a DataGridView cell value. I tried this using the following code: ``` DataGridView1.EditMode = DataGridViewEditMode.EditProgrammatically; DataGridView1.BeginEdit(false); DataGridView1.Rows[0].Cells[0].Value = "testing new value"; //just using a random parameter here, not sure it is needed when editing programmatically DataGridView1.CommitEdit(DataGridViewDataErrorContexts.LeaveControl); DataGridView1.Refresh(); ``` but no success :( any help would be appreciated