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Hi All,
I am trying to update mysql Database with changes made by user in a windows form which contains fields bound to a table in a dataSet.
I have a first form which contains a list of employees (readonly). When the user click on a given row, the details of the corresponding employee are displayed in a second form where the user can modify the data. My problem is that when attempting to update the database through the DataAdapetr update command, nothing happen. it seems that the commandBuilder object doesn't generate the update command !
Below is the vb.net code i use. Please advise me about how to fix it : (Should i add a call for EndEdit() method for each field in the form before calling the DataAdapter update method ? how to do that ? is there a way to call such a method only one time for the entire form ?)
Thanks a lot for any help because i am really confused about this.
Best Regards.
Jens1970
Private Sub DataGridView1_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick
If (e.RowIndex <> -1) Then
Dim iRow As Integer = e.RowIndex
Dim sCurrentMatricule As String = DataGridView1.Item(0, iRow).Value.ToString
Dim CurrentEmployee As New FrmNouveauSalarie()
Dim sqlConn As MySqlConnection = New MySqlConnection(ConnectionString)
Dim sqlCmd As String = "SELECT * FROM personnel WHERE `Matricule` = " + "'" + sCurrentMatricule + "'"
Try
CurrentEmployee.empDs = New DataSet()
sqlConn.Open()
CurrentEmployee.empDa = New MySqlDataAdapter(sqlCmd, sqlConn)
CurrentEmployee.empDa.Fill(CurrentEmployee.empDs, "personnel")
sqlConn.Close()
CurrentEmployee.tbxMatricule.DataBindings.Add("Text", CurrentEmployee.empDs.Tables("personnel"), "Matricule")
CurrentEmployee.tbxNom.DataBindings.Add("Text", CurrentEmployee.empDs.Tables("personnel"), "Nom")
CurrentEmployee.tbxPrenom.DataBindings.Add("Text", CurrentEmployee.empDs.Tables("personnel"), "Prenom")
CurrentEmployee.dtDateNaissance.DataBindings.Add("Text", CurrentEmployee.empDs.Tables("personnel"), "DateNaissance")
CurrentEmployee.dtDateRecrutement.DataBindings.Add("Text", CurrentEmployee.empDs.Tables("personnel"), "DateRecrutement")
CurrentEmployee.cmbSexe.DataBindings.Add("Text", CurrentEmployee.empDs.Tables("personnel"), "Sexe")
CurrentEmployee.tbxNni.DataBindings.Add("Text", CurrentEmployee.empDs.Tables("personnel"), "Nni")
CurrentEmployee.tbxNss.DataBindings.Add("Text", CurrentEmployee.empDs.Tables("personnel"), "Nss")
CurrentEmployee.tbxTelB1.DataBindings.Add("Text", CurrentEmployee.empDs.Tables("personnel"), "TelBureauExt")
CurrentEmployee.tbxTelB2.DataBindings.Add("Text", CurrentEmployee.empDs.Tables("personnel"), "TelBureauInt")
CurrentEmployee.tbxTelM.DataBindings.Add("Text", CurrentEmployee.empDs.Tables("personnel"), "TelMobile")
CurrentEmployee.tbxAdresse.DataBindings.Add("Text", CurrentEmployee.empDs.Tables("personnel"), "Adresse")
CurrentEmployee.ShowDialog()
Catch ex As Exception
MessageBox.Show("impossible to connect to DB : " & ex.Message)
Finally
MysqlConn.Dispose()
End Try
End If
End Sub
Code for the updateButton:
Private Sub UpdateBtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btMiseAjour.Click
Dim sqlConn As MySqlConnection = New MySqlConnection(ConnectionString)
Try
sqlConn.Open()
Dim MyDataCommanBuilder As MySqlCommandBuilder = New MySqlCommandBuilder(Me.empDa)
Me.Validate()
Me.empDa.Update(Me.empDs, "personnel")
sqlConn.Close()
Catch ex As Exception
MessageBox.Show("impossible to connect to DB : " & ex.Message)
Finally
sqlConn.Dispose()
End Try
Me.Close()
End Sub
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