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Datagridview KeyDown Event

I have a datagridview bound to a datatable. I want to have the Enter key move across the row and not down the column. I can catch the Enter key with a KeyDown event to use a SendKeys command (not very elegent), but when the cell is in the edit mode, the KeyDown event is not fired when the Enter Key is pressed. The focus moves down the column. Any ideas?

ScottL Friday, November 04, 2005 9:06 PM

Check out the following post: http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=157055&SiteID=1

-mark

DataGridView Program Manager

Microsoft

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Mark Rideout Monday, December 05, 2005 6:19 AM

Hi Scott,

I also had thesame problem and use this as a solution: it is not yet perfect though, but perhaps you find it usefull:

public class DataGridViewEnter : DataGridView
    {
        const int WM_KEYDOWN = 0x100;

        protected override bool ProcessCmdKey(ref System.Windows.Forms.Message msg, System.Windows.Forms.Keys keyData)
        {
            if (msg.Msg == WM_KEYDOWN && keyCode == Keys.Enter)
            {
                msg.WParam = (IntPtr)Keys.Tab;
                keyData = Keys.Tab;
             }
            return base.ProcessCmdKey(ref msg, keyData);
        }

    }

Paul Diterwich Thursday, November 17, 2005 2:49 PM

Hi there.

That is the only fix ive found but it doesnt solve the problem. That doesnt work when the cell is being edited.

There are some threads with this matter but i havent found nothing that solves this problem. If theres some solution please let me know.

Thank you very much

MacKraken Sunday, December 04, 2005 3:28 PM

Check out the following post: http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=157055&SiteID=1

-mark

DataGridView Program Manager

Microsoft

This post is provided “as-is�?/span>

Mark Rideout Monday, December 05, 2005 6:19 AM

This modified version also adds a new row automatically and hops back to the first column after an enter given in the last column a row higher:

public class DataGridViewEnter : DataGridView
{
        protected override bool ProcessDialogKey(Keys keyData)
        {
            Keys key = (keyData & Keys.KeyCode);
            if (key == Keys.Enter)
            {
                return this.ProcessRightKey(keyData);
            }
            return base.ProcessDialogKey(keyData);
        }

       public new bool ProcessRightKey(Keys keyData)
        {
            Keys key = (keyData & Keys.KeyCode);
            if (key == Keys.Enter)
            {
                if ((base.CurrentCell.ColumnIndex == (base.ColumnCount - 1)) && (base.CurrentCell.RowIndex == (base.RowCount - 1)))
                {
                    ((BindingSource)base.DataSource).AddNew();
                    base.CurrentCell = base.Rows[base.RowCount - 1].Cells[0];
                    return true;
                }

                if ((base.CurrentCell.ColumnIndex == (base.ColumnCount - 1)) && (base.CurrentCell.RowIndex + 1 != base.NewRowIndex))
                {
                    base.CurrentCell = base.Rows[base.CurrentCell.RowIndex + 1].Cells[0];
                    return true;
                }
                return base.ProcessRightKey(keyData);
            }
            return base.ProcessRightKey(keyData);
        }

        protected override bool ProcessDataGridViewKey(KeyEventArgs e)
        {
            if (e.KeyCode == Keys.Enter)
            {
                return this.ProcessRightKey(e.KeyData);
            }
            return base.ProcessDataGridViewKey(e);
        }

Hope you guys find it usefull.

Cheers,

Paul

Paul Diterwich Wednesday, December 07, 2005 1:09 AM

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