如何在datagridview中按下回车键时执行一些编码

我在winform中使用datagridview。

如果按回车键，所选内容将按行方向移动。但是我想执行一些代码，我写在下面:

try
{
    int dispin = dataGridView1.CurrentCell.OwningColumn.DisplayIndex;
    if (dispin == 0)
    {
        string cellval = dataGridView1.CurrentCell.Value.ToString();
        returnParam = cellval;
        this.Close();
    }
    else
    {
        int rowIndex = dataGridView1.CurrentCell.RowIndex;
        int colIndex = dataGridView1.CurrentCell.ColumnIndex;
        colIndex = colIndex - 1;
        string cellval = dataGridView1[colIndex, rowIndex].Value.ToString();
        // MessageBox.Show(cellval1+cellval2+cellval3);
        returnParam = cellval;
        this.Close();
        //textBox1.Text = cellval;
    }
}
catch
{
    MessageBox.Show("Select a Record", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
    //this.Close();
}

如何做到这一点?

我正在尝试按下键事件，但它会影响所有键，请帮助我。

//at form load:
dataGirdView1.KeyPress += OnDataGirdView1_KeyPress;
private void OnDataGirdView1_KeyPress(object sender, KeyPressEventArgs e)
{
     if (e.KeyChar == (char)Keys.Enter)
     { 
         RunMyCustomCode(); 
         //e.Handled = true; if you don't want the datagrid from hearing the enter pressed
     }
}

void TextBox1_KeyDown(object sender, KeyEventArgs e) 
{ 
    if (e.KeyCode == Keys.Enter) 
    { 
        e.Handled = true; 
    } 
}
void TextBox1_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e) 
{ 
    if (e.KeyCode == Keys.Return)
    {
        /* Your code here! */ 
    }
}