oussouss

hello i have a function that return a dataset :

public DataSet dataSetReq(string myQuery,string myTab)
{

myCommand = new OleDbCommand(myQuery, myConnection); //ExecuteSEL(myQuery)
dAdapter = new OleDbDataAdapter(myCommand);
OleDbCommandBuilder cBuilder = new OleDbCommandBuilder(dAdapter);

mydSet = new DataSet(myTab);

dReader = myCommand.ExecuteReader();
dReader.Close();
dAdapter.Fill(mydSet,myTab);
return mydSet;
}

and i have a piece of code in the onclick event of my botton :
BindingSource bSource = new BindingSource();
bSource.DataSource = DecGlob.GstBD.dataSetReq(DecGlob.Req, "Fournisseur").Tables[0];
this.dataGridViewFour.DataSource = bSource;
DecGlob.GstBD.dAdapter.Update(DecGlob.GstBD.dataSetReq(DecGlob.Req, "Fournisseur"), "Fournisseur");
the update deosn't work please help me !!!