Question

With a listbox, I have the following code to extract the item selected:

    private void inventoryList_SelectedIndexChanged(object sender, EventArgs e)     {         String s = inventoryList.SelectedItem.ToString();         s = s.Substring(0, s.IndexOf(':'));         bookDetailTable.Rows.Clear();         ...         more code         ...     } 

I want to do something similar for a DataGridView, that is, when the selection changes, retrieve the contents of the first cell in the row selected. The problem is, I don’t know how to access that data element.

Any help is greatly appreciated.

Answer 1

I think that this is what you’re looking for. But if not, hopefully it will give you a start.

private void dataGridView1_SelectionChanged(object sender, EventArgs e) {     DataGridView dgv = (DataGridView)sender;      //User selected WHOLE ROW (by clicking in the margin)     if (dgv.SelectedRows.Count> 0)        MessageBox.Show(dgv.SelectedRows[0].Cells[0].Value.ToString());      //User selected a cell (show the first cell in the row)     if (dgv.SelectedCells.Count > 0)         MessageBox.Show(dgv.Rows[dgv.SelectedCells[0].RowIndex].Cells[0].Value.ToString());      //User selected a cell, show that cell     if (dgv.SelectedCells.Count > 0)         MessageBox.Show(dgv.SelectedCells[0].Value.ToString()); }