I have a DataGridView, in which I have a column. This column is not readonly, and the purpose of it is to be able to write text in every cell. When I select a empty cell and start typing, it works as expected. However, when there already is text in a cell, and I start typing, all the existing text is removed. How can I prevent this?
Example:
The cell already contains "ABC". When I type D, I want the cell to contain "ABCD", but it only contains "D".
Assume dg as your datagridview. Try assigning the following event handler EditingControlShowing, CellEnter, CellLeave to your datagridview. And you should be feeling good now.
string str = string.Empty;
int i = 0;
private void dg_CellEnter(object sender, DataGridViewCellEventArgs e)
{
DataGridView dgv = (DataGridView)sender;
str = dgv[e.ColumnIndex, e.RowIndex].Value.ToString();
}
void dg_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
TextBox tb = (TextBox)e.Control;
tb.TextChanged += new EventHandler(tb_TextChanged);
}
void tb_TextChanged(object sender, EventArgs e)
{
if (i == 0)
{
i++;
DataGridViewTextBoxEditingControl dgv = (DataGridViewTextBoxEditingControl)sender;
string curVal = dgv.Text;
dgv.Text = str + curVal;
dgv.SelectionStart = dgv.Text.Length;
}
dg.EditingControlShowing -= new DataGridViewEditingControlShowingEventHandler(dg_EditingControlShowing);
dg.CellEnter -= new DataGridViewCellEventHandler(dg_CellEnter);
}
private void dg_CellLeave(object sender, DataGridViewCellEventArgs e)
{
i = 0;
}
Hope it helps.
