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DataGridView Guru?

Posted on 2006-10-19
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Last Modified: 2008-01-09
I need to do something a bit odd with a datagridview ... basically I need it to support edit mode but I want certain columns to not be tab stops ...

i.e.
column1   column2   column3
          5             6              7

edit in column1 hit tab and have it skip column2 and go directly to column3 ... any ideas?

Cheers,

Greg
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Question by:gregoryyoung
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3 Comments
 
LVL 37

Author Comment

by:gregoryyoung
ID: 17770860
and to be clear this is winforms.
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LVL 37

Author Comment

by:gregoryyoung
ID: 17771006
btw: I have tried this and some other ways of getting this behavior ...


void dataGridView1_CellEnter(object sender, DataGridViewCellEventArgs e)
        {
            if (e.ColumnIndex == columntoskip)
            {
                this.dataGridView1.CurrentCell = this.dataGridView1[e.RowIndex, e.ColumnIndex + 1];
            }
        }

this gives an exception due to re-entracy
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LVL 37

Accepted Solution

by:
gregoryyoung earned 2000 total points
ID: 17771728
here is how to do it ... in case anyone finds this on the PAQ. This is for forward tabbing only butsupporting it for backwards tabbing (shift tab) would be rather simple.

    public class SkipColumnsDataGridView : DataGridView
    {
        private List<int> ColumnsToSkip = new List<int>();
        public SkipColumnsDataGridView(int[] toSkip)
        {
            ColumnsToSkip.AddRange(toSkip);
        }

        protected override bool ProcessDialogKey(Keys keyData)
        {
            Keys key = (keyData & Keys.KeyCode);
            int Location = this.CurrentCellAddress.X;
            if (ColumnsToSkip.Contains(Location))
            {
                if (key == Keys.Tab)
                {
                    do
                    {
                        this.ProcessTabKey(keyData);
                    } while (ColumnsToSkip.Contains(this.CurrentCellAddress.X));
                    return this.ProcessTabKey(keyData);
                }
            }
            return base.ProcessDialogKey(keyData);
        }
        protected override bool ProcessDataGridViewKey(KeyEventArgs e)
        {
            int Location = this.CurrentCellAddress.X;
            if (ColumnsToSkip.Contains(Location))
            {

                if (e.KeyCode == Keys.Tab)
                {
                    do
                    {
                        this.ProcessTabKey(e.KeyData);
                    } while (ColumnsToSkip.Contains(this.CurrentCellAddress.X));
                    return this.ProcessTabKey(e.KeyData);
                }
            }
            return base.ProcessDataGridViewKey(e);
        }
    }
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