How to update dataGridView and also update database?

[ocean]

i have this code:

string conString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\Users\\Khai\\Documents\\MyNum…
string queryM = "SELECT * FROM magnum WHERE todayDate = #" + pickedDate.Date + "#";
OleDbDataAdapter dAdapterM = new OleDbDataAdapter(queryM, conString);
OleDbCommandBuilder cBuilderM = new OleDbCommandBuilder(dAdapterM);
DataTable dtableM = new DataTable();

dAdapterM.Fill(dtableM); 
BindingSource bSourceM = new BindingSource();
bSourceM.DataSource = dtableM;
magnumView.DataSource = dtableM; 

dAdapterM.Update(dtableM);

when the data on the dataGridView change, the original database also update by it self, but it cant be done.. i have search for many place.. but didn get the thing also

[PRR]

Could you be more clear? Can you clearly define what you want to do?