when change displayqty not go next row first cell code issue it go next row cell number 4

Question

I work on data grid view I face issue I can't solve it

so please if you can help me please

I have data grid view read barcode it read barcode success and display items data

issue when change quantity and press enter then I need it go to next empty row

on first cell Code to get new barcode by scanner

but this not happen

what happen is cursor go to next row cell number 4

so please How to make first cell focus next row instead of cell number 4

 private void GridTrxInvF_CellValueChanged_1(object sender, DataGridViewCellEventArgs e)
    {


        if (GridTrxInvF.CurrentCell != null && GridTrxInvF.CurrentCell.ColumnIndex == GridTrxInvF.Columns["displayQty"].Index && GridTrxInvF.CurrentCell.Value != null)

        {

            int col = GridTrxInvF.CurrentCell.ColumnIndex;
            int row = GridTrxInvF.CurrentCell.RowIndex;
            int nRows = GridTrxInvF.Rows.Count - 1;
            int nCol = GridTrxInvF.Columns.Count - 1;


            if (nCol == col && nRows == row)
            {
                GridTrxInvF.CurrentCell = GridTrxInvF[0, 0];
            }
            else if (nRows == row)
            {
                GridTrxInvF.CurrentCell = GridTrxInvF[col + 1, 0];
            }
            else
            {




                var row2 = GridTrxInvF.Rows[GridTrxInvF.RowCount - 1];



                GridTrxInvF.CurrentCell = row2.Cells[1];


                GridTrxInvF.CurrentCell.Selected = true;

                GridTrxInvF.BeginEdit(true);

            }

        }


    }

protected override bool ProcessDataGridViewKey(System.Windows.Forms.KeyEventArgs e)
{
    if (e.KeyCode == Keys.Escape)
        _CellEnteredFromEsc = true;
    else
        _CellEnteredFromEsc = false;
    int TimesToSend = 1;
    if (this.CurrentRow == null) return base.ProcessDataGridViewKey(e);
    else if (e.KeyCode == Keys.Enter)
    {

        if (this.CurrentCell.ColumnIndex == _Get_The_Last_Visibale_Index() && this.ValidateRequiredCellsInRow() && this.ValidateInRow() && this.CurrentCell.RowIndex == (this.Rows.Count - 1))
        {
            this.AddNewRow();
        }
        else
        {
            for (int i = this.CurrentCell.ColumnIndex + 1; i < this.Columns.Count; i++)
            {
                if (!this.Columns[i].Visible) continue;





                if (this.Columns[i].Tag != null && (this.Columns[i].Tag as ColumnTag).IsDisabled)
                {
                    if (this[i, this.CurrentCell.RowIndex] == this[this.Columns.Count - 1, this.Rows.Count - 1] && this.ValidateRequiredCellsInRow() && this.ValidateInRow())
                    {
                        this.AddNewRow();
                        return false;
                    }
                    else TimesToSend++;
                }
                else break;
            }

            if (!_StopCellTab)
               SendKeys.Send("{TAB " + TimesToSend + "}");
                                this._CellEnteredFromTab = true;
        }

        return false;
    }


    else if (bIsGridValid)
        return base.ProcessDataGridViewKey(e);
    return false;
}

Answer 1

@ahmed salah , you could try the following code to use Sennkeys to go next row first cell.

  private void dataGridView1_CellValueChanged(object sender, DataGridViewCellEventArgs e)  
        {  
            if (e.ColumnIndex == 3)  
            {  
                SendKeys.Send("{TAB}");  
                SendKeys.Send("{UP}");  
                 
            }  
  
        }  

Result:

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Answer 2

The following out which on the last column edit goes to the next row, first column.

public class DataGridViewJumper : DataGridView
{
    protected override void OnKeyUp(KeyEventArgs e)
    {
        if (e.KeyCode == Keys.Enter)
        {
            if (CurrentRow != null)
            {
                int currentRow = CurrentRow.Index;
                if (currentRow >= 0 && CurrentCell.ColumnIndex == ColumnCount -1)
                {
                    CurrentCell = Rows[currentRow].Cells[0];
                }
            }
        }
        base.OnKeyUp(e);
    }
}