current cell focus problem after using cellendedit event

Question

I am designing a c# datagridview in which the enter key works as tab , back key results in moving back to previous cell . Also if the focus is at the last cell of last row of last column it creates a new row .

private void dataGridView1_KeyDown(object sender, KeyEventArgs e)  
     {  
        e.SuppressKeyPress = true;  
        int iColumn = dataGridView1.CurrentCell.ColumnIndex;  
        int iRow = dataGridView1.CurrentCell.RowIndex;  

        if (e.KeyCode == Keys.Enter || e.KeyCode == Keys.Right || e.KeyCode == Keys.Tab)  
        {  
            //to check if the pointer reach last column  
            if (iColumn == dataGridView1.ColumnCount - 1)  
            {  
                //executing when line ends                           
                if (dataGridView1.RowCount > (iRow + 1))  
                {  
                     
                    dataGridView1.CurrentCell = dataGridView1[0, iRow + 1];  
                }  
                    // fires when you reach last cell of last row and last column   
                else  
                {  
                      
                    dataGridView1.Rows.Add();  
                    dataGridView1.CurrentCell = dataGridView1[0, iRow +1];                    
                }  
            }  
            else  
            {  
                dataGridView1.CurrentCell = dataGridView1[iColumn + 1, iRow];  
            }  
        }  
        if (e.KeyCode == Keys.Down)  
        {  
            int c = dataGridView1.CurrentCell.ColumnIndex;  
            int r = dataGridView1.CurrentCell.RowIndex;  
            if (r < dataGridView1.Rows.Count - 1) //check for index out of range  
                dataGridView1.CurrentCell = dataGridView1[c, r + 1];  
        }  
        if (e.KeyCode == Keys.Up)  
        {  
            int c = dataGridView1.CurrentCell.ColumnIndex;  
            int r = dataGridView1.CurrentCell.RowIndex;  
            if (r > 0) //check for index out of range  
                dataGridView1.CurrentCell = dataGridView1[c, r - 1];  
        }  
        if (e.KeyCode == Keys.Back || e.KeyCode == Keys.Left)  
        {  
            //to check if you are in first cell of any line   
            if (iColumn == 0)  
            {  
                //to check if you are in first cell of fist line   
                if (iRow == 0)  
                {  
                    MessageBox.Show("you reached first cell");  
                }  
                else  
                {  
                    dataGridView1.CurrentCell = dataGridView1[dataGridView1.ColumnCount - 1, iRow - 1];  
                }  
            }  
            else  
            {  
                dataGridView1.CurrentCell = dataGridView1[iColumn - 1, iRow];  
            }  
        }  
    }  
   Now , after this i want to edit the cell values and want to move to next cell when i press enter key  , so i add  the following event (as i am in cell editing mode due to this, the above key down event will not raise )   
private void dataGridView1_CellEndEdit(object sender, DataGridViewCellEventArgs e)  
    {  
        // MOVE TO NEXT CELL WHEN DONE EDITING   
        SendKeys.Send("{right}");  
    }  

But after using the above event cellendedit , i found out that the cell is moving down to the next row(default behavior of datagridview) and then to next row's next cell(due to cellendedit) . Instead it should move to the next column same row . Please suggest me to fix this behaviour .
@Jack J Jun

Answer 1

@ankit goel , Welcome to Microsoft Q&A, based on my test, I reproduced your problem. If you want to move to the next column same row, I recommend that you don't use the Enter or Tab to move the cell. Because you have defined it in the keydown event.

I chose F1 key to make it worked and here is a code example you could refer to.

  private void dataGridView1_KeyDown(object sender, KeyEventArgs e)  
        {  
            e.SuppressKeyPress = true;  
            int iColumn = dataGridView1.CurrentCell.ColumnIndex;  
            int iRow = dataGridView1.CurrentCell.RowIndex;  
            if (e.KeyCode == Keys.Enter || e.KeyCode == Keys.Right || e.KeyCode == Keys.Tab)  
            {  
                //to check if the pointer reach last column  
                if (iColumn == dataGridView1.ColumnCount - 1)  
                {  
                    //executing when line ends                           
                    if (dataGridView1.RowCount > (iRow + 1))  
                    {  
  
                        dataGridView1.CurrentCell = dataGridView1[0, iRow + 1];  
                    }  
                    // fires when you reach last cell of last row and last column   
                    else  
                    {  
  
                        dataGridView1.Rows.Add();  
                        dataGridView1.CurrentCell = dataGridView1[0, iRow + 1];  
                    }  
                }  
                else  
                {  
                    dataGridView1.CurrentCell = dataGridView1[iColumn + 1, iRow];  
                }  
            }  
            if (e.KeyCode == Keys.Down)  
            {  
                int c = dataGridView1.CurrentCell.ColumnIndex;  
                int r = dataGridView1.CurrentCell.RowIndex;  
                if (r < dataGridView1.Rows.Count - 1) //check for index out of range  
                    dataGridView1.CurrentCell = dataGridView1[c, r + 1];  
            }  
            if (e.KeyCode == Keys.Up)  
            {  
                int c = dataGridView1.CurrentCell.ColumnIndex;  
                int r = dataGridView1.CurrentCell.RowIndex;  
                if (r > 0) //check for index out of range  
                    dataGridView1.CurrentCell = dataGridView1[c, r - 1];  
            }  
            if (e.KeyCode == Keys.Back || e.KeyCode == Keys.Left)  
            {  
                //to check if you are in first cell of any line   
                if (iColumn == 0)  
                {  
                    //to check if you are in first cell of fist line   
                    if (iRow == 0)  
                    {  
                        MessageBox.Show("you reached first cell");  
                    }  
                    else  
                    {  
                        dataGridView1.CurrentCell = dataGridView1[dataGridView1.ColumnCount - 1, iRow - 1];  
                    }  
                }  
                else  
                {  
                    dataGridView1.CurrentCell = dataGridView1[iColumn - 1, iRow];  
                }  
            }  
        }  
        protected override bool ProcessCmdKey(ref Message msg, Keys keyData)  
        {  
            if (keyData == Keys.F1)  
            {  
                if (dataGridView1.CurrentRow != null)  
                    dataGridView1.CurrentCell =  
                        dataGridView1  
                        .Rows[dataGridView1.CurrentRow.Index]  
                        .Cells[dataGridView1.CurrentCell.ColumnIndex + 1];  
            }  
            return base.ProcessCmdKey(ref msg, keyData);  
        }  

Updated example:

public class NewDataGridView:DataGridView  
    {  
        protected override bool ProcessDialogKey(Keys keyData)  
        {  
            // Extract the key code from the key value.   
            Keys key = (keyData & Keys.KeyCode);  
  
            // Handle the ENTER key as if it were a RIGHT ARROW key.   
            if (key == Keys.Enter||key==Keys.Right)  
            {  
                Console.WriteLine("in edit");  
                return this.ProcessTabKey(keyData);  
            }  
            return base.ProcessDialogKey(keyData);  
        }  
  
        protected override bool ProcessDataGridViewKey(KeyEventArgs e)  
        {  
            // Handle the ENTER key as if it were a RIGHT ARROW key.   
            if (e.KeyCode == Keys.Enter)  
            {  
                Console.WriteLine("no edit");  
                return this.ProcessTabKey(e.KeyData);  
            }  
            return base.ProcessDataGridViewKey(e);  
        }  
    }  

After you edit the cells, you could use F1 key to move cells to the same row next column.

Best Regards,
Jack

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