Database only updates if choose a diffrent row

Database only updates if choose a diffrent row,

I have a datagrid wich is bound to a dataset.
If change now something in the grid an call
the dataadapter to update the database with the dataset
it only updates it if i selected a other row in the datagrid.
It also works ok if i select a diffrent control in my from and than call the update function.

Any ideas how i can do this programmatical?
I tried using i.e. listbox1.Select(), before i call the update
Well that works optical but somehow its diffrent because ths databse
still does not update only if i slect the other control or row by hand.

thanks in advance

here a Code snippet of my datagrid class and jow i call the update

PHP Code:

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        void OnMenuSaveClick(object obj, EventArgs ea)
        {            
            listBox1.Select();
            listBox1.AddLog("Es wurde auf Speichern gedrückt");
            dataGrid1.SaveCurrentGrid();
        }




using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.OleDb;

namespace ATGParaTool
{
    /// <summary>
    /// Zusammendfassende Beschreibung für SQLDataGrid.
    /// </summary>
    public class SQLDataGrid:DataGrid
    {
        DataSet                dataSet = null;
        OleDbConnection        connection; 
        OleDbDataAdapter    dataAdapter;
        OleDbCommandBuilder custCB;

        string  strTabel;

        public SQLDataGrid()
        {
        }
        public void RefreshSQL(string strCaption, string strConnectString, string strSQLString)
        {
            connection                        = new OleDbConnection(strConnectString); 
            dataAdapter                        = new OleDbDataAdapter(strSQLString, connection);
            custCB                            = new OleDbCommandBuilder(dataAdapter);


            dataSet                            = new DataSet();
            DataGridTableStyle dgts            = new DataGridTableStyle();
            strTabel                        = strCaption;

            dataSet.Clear();
            dataAdapter.Fill(dataSet, strCaption); 
            CaptionText = strCaption;
            DataSource = dataSet.Tables[strCaption].DefaultView;

            dgts.MappingName  = strCaption;
            dgts.BackColor      = Color.Beige;
            dgts.AlternatingBackColor = Color.AliceBlue;


            TableStyles.Clear();
            TableStyles.Add(dgts);


            #region Die Weite der Spalten anpassen
            for(int col=0; col < dataSet.Tables[strCaption].Columns.Count; col++)
            {
                float width = 0;
                int numRows = dataSet.Tables[strCaption].Rows.Count;
            
                Graphics g = Graphics.FromHwnd(this.Handle);
                StringFormat sf = new StringFormat(StringFormat.GenericTypographic);
                SizeF size;

                for(int i = 0; i < numRows; ++ i)
                {
                    size = g.MeasureString(this[i, col].ToString(), this.Font, 500, sf);
                    if(size.Width > width)
                        width = size.Width + 15;
                }
                
                g.Dispose();

                this.TableStyles[strCaption].GridColumnStyles[col].Width = (int) width;
            }
            #endregion

            CurrencyManager cm = (CurrencyManager)this.BindingContext[DataSource, DataMember];      
            ((DataView)cm.List).AllowNew = false;
        }

        public void SaveCurrentGrid()
        {

            if(dataSet != null)
            {
                if(dataSet.Tables[strTabel].Rows.Count > 0)
                {
                    dataAdapter.Update(dataSet, strTabel);
                }
            }
        }
    }
} 


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