C# Updating changes back to SQl database

Can someone please help me on this problem. I am trying to send the updated changes to the sql database when I remove a row. I use the delete method to delete the numbered row and then use the upate command to update the changes. However, when I reload the program all the rows are still showing again. Below is the current code I am using for forms 1 and 2. This has been giving me a headache for awhile now and any further help would be appreciated:

Code:

//Form1 
 private void UpdateSavebtn_Click_1(object sender, System.EventArgs e)
        {
            Mcon.Open();
            UpdateVal = 1;
            if (UpdateVal == 0)
            {
                CurCol = dataGrid1.CurrentCell.ColumnNumber;
                CurRow = dataGrid1.CurrentCell.RowNumber;
                CellValue = dataGrid1[CurRow, CurCol].ToString();
                MessageBox.Show(CellValue.ToString());


                if (CellValue == "")
                {

                    MessageBox.Show("No Fields can be Blank - update failed");
                    Movset1.RejectChanges();
                    ImageMain();
                    CurRow = -1;
                    CurCol = -1;

                    Mcon.Close();
                    return;

                }
                CellValue = dataGrid1[CurRow, CurCol].ToString();
                CurRow = -1;
                CurCol = -1;
            }

          
            MovAdapt.UpdateCommand = cb.GetUpdateCommand();
            MovAdapt.Update(Movset1.Tables[0]);
            Movset1.AcceptChanges();
            

            MessageBox.Show("New movie added");

            Mcon.Close();
            UpdateVal = 0;

            dataGrid1.RowHeadersVisible = true;
        }

Code:

 private void button1_Click(object sender, EventArgs e)
        {
            if (textBox1.Text == "")
            {
                MessageBox.Show(" Please enter a title to be deleted ");
                return;             
            }
           


               DSMethod();
               Dv2 = new DataView(ds2.Tables[0]);
               F1.dataGrid1.DataSource = Dv2;
               Dv2.RowFilter = "Title ='" + textBox1.Text + "'";

               if (Dv2.Count < 1)
               {
                   MessageBox.Show("Movie does not exist in MovieBase, please try again");
                   return;
               }
               else
               {
                 
                   int rownum = (F1.dataGrid1.CurrentCell.RowNumber);
                   Dv2.Delete(rownum);

                   ds2.AcceptChanges();
                   //MovAdapt.UpdateCommand = cb.GetUpdateCommand();
                   //MovAdapt.Update(Movset1.Tables[0]);
                  
                   this.Hide();
                           
                     //Dv2.Table.Rows.Remove(Dv2.Table.Rows.current)
                  
                   MessageBox.Show("Movie has been deleted");
                   
               }