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c#winformsdatagridviewselectionchanged
Elie
Elie

Reputation: 13843

How to get a specific cell in a DataGridView on selection changed

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.

Upvotes: 3

Views: 26548

Answers (2)

seem7teen
seem7teen

Reputation: 273

This is another way of approaching to this question using the column name.

private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
   var senderGrid = (DataGridView)sender;
   if (senderGrid.Columns[e.ColumnIndex] is DataGridViewButtonColumn && e.RowIndex >= 0)
   {
      if (e.ColumnIndex == dataGridView1.Columns["ColumnName"].Index)
      {
        var row = senderGrid.CurrentRow.Cells;
        string ID = Convert.ToString(row["columnId"].Value); //This is to fetch the id or any other info
        MessageBox.Show("ColumnName selected");
      }
   }
}

If you need to pass the data from that selected row you can pass it this way to the other form.

Form2 form2 = new Form2(ID);
form2.Show();

Upvotes: 0

Mitchell Gilman
Mitchell Gilman

Reputation: 1149

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());
}

Upvotes: 15

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