DatagridView Select last row

Question

I have some trouble with setting the last row in my datagridview selected. I select the last row this way:

if (grid.Rows.Count > 0)
{
    try
    {
        gr         


        

Answer 1

dataGridView1.Rows[dataGridView1.Rows.Count - 1].Selected = true;

Answer 2

Eventually the last row is empty because it's the empty row with which the user can add a new row. This row cannot be selected. Have you tried grid.Rows.Count - 2? As an alternative, you can set AllowUserToAddRows to false.

Answer 3

Your 'catch' block for IndexOutOfRangeException is empty, and will not display any error at all.

Either your question is not exact, or the exception is being thrown somewhere else.

EDIT: Having looked through your call stack that you added, I can see that the error is, indeed, not being thrown here, but rather in the CurrencyManager class's Current/Item properties, which is ultimately being triggered by the call to the CurrentCell setter.

Bottom line: the problem is not in this code; the exception is being thrown by some other piece of code triggered by your setting the current cell.

Answer 4

Try:

dataGridView1.ClearSelection();//If you want

int nRowIndex = dataGridView1.Rows.Count - 1;
int nColumnIndex = 3;

dataGridView1.Rows[nRowIndex].Selected = true;
dataGridView1.Rows[nRowIndex].Cells[nColumnIndex].Selected = true;

//In case if you want to scroll down as well.
dataGridView1.FirstDisplayedScrollingRowIndex = nRowIndex;

Gives following output: (Last row, scrolled and selected)

Answer 5

Have you thought about using Linq for this?

    grid.Rows.OfType<DataGridViewRow>().Last().Selected = true;
    grid.CurrentCell = grid.Rows.OfType<DataGridViewRow>().Last().Cells.OfType<DataGridViewCell>().First(); // if first wanted

Answer 6

To avoid the IndexOutOfRangeException make sure only to select a visible row. I suggest:

// Find last visible row
DataGridViewRow row = dataGridView1.Rows.Cast<DataGridViewRow>().Where(r => r.Visible).Last(); 
// scroll to last row if necessary
dataGridView1.FirstDisplayedScrollingRowIndex = dataGridView1.Rows.IndexOf(row);
// select row
row.Selected = true;