c# Refresh Access Database

Question

I am able to Save Data to a Access databse , now when i add new entry i try to refresh the database but the new entry dont show until i close the program and open it back up. I have 2 buttons one Update and the other Refresh. I am using Parameters. It would be better to use one meathod to do both (thats over my head at the moment) so i have 2 buttons. I dont get any errors when i try to Refresh so I dont know where to start.

 

Thanks 

 

My Update code working fine.

 

private void btnUpdate_Clicked(object sender, RoutedEventArgs e)
       {
           using (var myCon = new OleDbConnection(ConfigurationManager.ConnectionStrings["Connection"].ToString()))
           {
               using (var myCmd = new OleDbCommand("insert into [Sheet1](Box1,Box2,Box3,Box4,Box5,Box6,Box7,Box8)Values(@nm1,@nm2,@nm3,@nm4,@nm5,@nm6,@nm7,@nm8)", myCon))
               {
                   myCmd.Parameters.AddWithValue("@nm1", txt_Box1);
                   myCmd.Parameters.AddWithValue("@nm2", txt_Box2);
                   myCmd.Parameters.AddWithValue("@nm3", txt_Box3.Text);
                   myCmd.Parameters.AddWithValue("@nm4", txt_Box4.Text);
                   myCmd.Parameters.AddWithValue("@nm5", TXT_Box5.Text);
                   myCmd.Parameters.AddWithValue("@nm6", txt_Box6.Text);
                   myCmd.Parameters.AddWithValue("@nm7", txt_Box7.Text);
                   myCmd.Parameters.AddWithValue("@nm8", txt_Box8.Text);

                   try
                   {
                       myCon.Open();
                       int z = myCmd.ExecuteNonQuery();
                       if (z > 0)
                       {
                           MessageBox.Show("Data Inserted");

                      }

                   }
                   catch (Exception ex)
                   {
                       //Handle exception as needed
                   }
               }
           }


       }

 My Refresh is not refreshing the data base no errors givens.

 

private void btn_Refresh_Click(object sender, EventArgs e)
        {

            using (var myCon = new OleDbConnection(ConfigurationManager.ConnectionStrings["Connection"].ToString()))
            {
                using (var myCmd = new OleDbCommand("UPDATE Sheet1 SET Box1 =@nm1,Box2 = @nm2, Box3=@nm3, Box4 = @nm4, Box5 = @nm5,Box6  = @nm6, Box7 = @nm7 WHERE Box8 = @nm8", myCon))
                {
                    myCmd.Parameters.AddWithValue("@nm1", txt_Box1.Text);
                    myCmd.Parameters.AddWithValue("@nm2", txt_Box2.Text);
                    myCmd.Parameters.AddWithValue("@nm3", txt_Box3.Text);
                    myCmd.Parameters.AddWithValue("@nm4", txt_Box4.Text);
                    myCmd.Parameters.AddWithValue("@nm5", TXT_Box5.Text);
                    myCmd.Parameters.AddWithValue("@nm6", txt_Box6.Text);
                    myCmd.Parameters.AddWithValue("@nm7", txt_Box7.Text);
                    myCmd.Parameters.AddWithValue("@nm8", txt_Box8.Text);

                    try
                    {
                        myCon.Open();
                        int z = myCmd.ExecuteNonQuery();
                        MessageBox.Show("Data Updated");

                    }
                    catch (Exception ex)
                    {
                        //Handle exception as needed
                    }
                }
            }


        }