How I Reload Datagridview data while insert or update data in .net form application in access database?

How I Reload Datagridview data while insert or update data in .net form
application in access database?

I have a desktop application project. In entry page a datagridview shows
the existing items in database. Now when I entry new Item I want to insert
it directly in datagridview. That mean I want to reload/refresh
datagridview. My database is in MS Access.
private DataTable GetData()
{
DataTable dt = new DataTable();
//using (SqlConnection con = new SqlConnection(conn))
using (OleDbConnection con=new OleDbConnection(conn))
{
OleDbCommand cmd = new OleDbCommand("Select ID,Name from
GroupDetails where comID='" + label1.Text + "'", con);
//SqlCommand cmd = new SqlCommand("Select ID,Name from
GroupDetails where comID='" + label1.Text + "'", con);
con.Open();
//SqlDataAdapter ad = new SqlDataAdapter(cmd);
OleDbDataAdapter ad = new OleDbDataAdapter(cmd);
DataSet ds = new DataSet();
ad.Fill(ds);
dt = ds.Tables[0];
return dt;
}
}
private void btnSave_Click(object sender, EventArgs e)
{
//SqlConnection con = new SqlConnection(conn);
OleDbConnection con = new OleDbConnection(conn);
con.Open();
//SqlCommand cmd;
try
{
string query = "insert into GroupDetails (ID,Name)
values(@ID,@Name)";
// cmd = new SqlCommand(query,con);
OleDbCommand cmd = new OleDbCommand(query, con);
cmd.Parameters.AddWithValue("@ID",txtID.Text);
cmd.Parameters.AddWithValue("@Name",txtName.Text);
int i = cmd.ExecuteNonQuery();
if(i!=0)
{
dataGridGroup.DataSource = GetData();
}
}
catch (Exception ex)
{
ex.Message.ToString();
}
finally
{
con.Close();
}
}
[Note: When I use sql database then it works fine.]