Mutiple Combobox selected Value in dataGridview using C#

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C#

Please Tell Me the Problm in This It is Not Working Properly
Please Send Me the Solution on my Email

heeramidha@gmail.com

private void combox_SelectedIndexChanged(object sender, EventArgs e)
{
ComboBox combox1 = (ComboBox)sender;
if (combox1.SelectedValue != null)
Grid.CurrentRow.Cells[1].Value = combox1.SelectedValue.ToString();
//MessageBox.Show(combox.SelectedValue.ToString());
}
private void combox1_SelectedIndexChanged(object sender, EventArgs e)
{
ComboBox combox = (ComboBox)sender;
if (combox.SelectedValue != null)
Grid.CurrentRow.Cells[3].Value = combox.SelectedValue.ToString();
//MessageBox.Show(combox.SelectedValue.ToString());
}

private void Grid_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
switch (Grid.CurrentCell.ColumnIndex)
{

case 0:
{
ComboBox cmb2;
cmb2 = e.Control as ComboBox;
if (cmb2 == null)
{
return;
}
else
{
cmb2.SelectedIndexChanged += combox_SelectedIndexChanged;
}
}
break;
case 2:
{
ComboBox cmb1;
cmb1 = e.Control as ComboBox;
if (cmb1 == null)
{
return;
}
else
{
cmb1.SelectedIndexChanged += combox1_SelectedIndexChanged;
}
}
//MessageBox.Show(Grid.CurrentCell.ColumnIndex.ToString());
break;

}

}