Error when adding new row to DataGridView

Question

I have a DataGridView with some text columns, combo box columns and an image column. When I try to add a blank new row by calling DataGridView1.Rows.AddCopy(0) I get the following error: System.FormatException: Formatted value of the cell has a wrong type.

The new row does not contain any data. When the user adds a new row through the GUI (ie not programmatically) there is no problem. Does anyone have any ideas as to what might be causing this issue?

Answer 1

Does this help?

        // Create a new row on a datagridview
        var rowId = dataGridView1.Rows.Add();

        // fill the cells in the newly created row with your data
        dataGridView1.Rows[rowId].Cells[ColumnText.Name].Value = "";
        dataGridView1.Rows[rowId].Cells[ColumnCheckbox.Name].Value = true;
        dataGridView1.Rows[rowId].Cells[ColumnImage.Name].Value = null; // add image