Hi I have a form with a combo box called cmbSupplier. I want to select the name of the suppliers from a database table for and show it in the combo box as a drop down list. For doing so, I am susing the following code which work.
Private Sub frmPatentMaster_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim setting As ConnectionStringSettings = ConfigurationManager.ConnectionStrings("Getin")
Dim constring = setting.ConnectionString.ToString()
Dim constrg As String
constrg = constring + "user id = " + Me.loginID.ToString() + " ; password = " + Me.loginPwd.ToString()
Dim mycon As New MySqlConnection(constrg)
'Open the connection and get a values from mst_supplier for populating the drop down list
Try
Dim SpCmd As MySqlCommand
SpCmd = New MySqlCommand("SP_SUPPLIER_DROPDOWN", mycon)
SpCmd.CommandType = CommandType.StoredProcedure
mycon.Open()
Dim myds As DataSet = New DataSet
Dim myadp As MySqlDataAdapter = New MySqlDataAdapter(SpCmd)
myadp.Fill(myds, "Mytable")
cmbSupplier.DataSource = myds.DefaultViewManager
cmbSupplier.DisplayMember = "Mytable.supplier" ' the stored procedure returns only one column called supplier
mycon.Close()
Catch ex As Exception
MessageBox.Show(ex.ToString)
Finally
mycon.Dispose()
End Try
End Sub
However, after that I am not able to copy the value of the selected item in the combo box to a string variable. The following code is not working
Private Sub cmbSupplier_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmbSupplier.SelectedIndexChanged
Dim SupplierName As String
SupplierName = Me.cmbSupplier.selectedItem.tostring
MessageBox.Show(SupplierName)
End Sub
The output of this shows the following info:
1. System.Data.DataViewManagerListItemTypeDescriptor but not the name of the supplier selected in the combo box. How Do I overcome it.
The output of this shows the following info:1. System.Data.DataViewManagerListItemTypeDescriptor but not the name of the supplier selected in the combo box. How Do I overcome it.
Private Sub frmPatentMaster_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim setting As ConnectionStringSettings = ConfigurationManager.ConnectionStrings("Getin")
Dim constring = setting.ConnectionString.ToString()
Dim constrg As String
constrg = constring + "user id = " + Me.loginID.ToString() + " ; password = " + Me.loginPwd.ToString()
Dim mycon As New MySqlConnection(constrg)
'Open the connection and get a values from mst_supplier for populating the drop down list
Try
Dim SpCmd As MySqlCommand
SpCmd = New MySqlCommand("SP_SUPPLIER_DROPDOWN", mycon)
SpCmd.CommandType = CommandType.StoredProcedure
mycon.Open()
Dim myds As DataSet = New DataSet
Dim myadp As MySqlDataAdapter = New MySqlDataAdapter(SpCmd)
myadp.Fill(myds, "Mytable")
cmbSupplier.DataSource = myds.DefaultViewManager
cmbSupplier.DisplayMember = "Mytable.supplier" ' the stored procedure returns only one column called supplier
mycon.Close()
Catch ex As Exception
MessageBox.Show(ex.ToString)
Finally
mycon.Dispose()
End Try
End Sub
However, after that I am not able to copy the value of the selected item in the combo box to a string variable. The following code is not working
Private Sub cmbSupplier_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmbSupplier.SelectedIndexChanged
Dim SupplierName As String
SupplierName = Me.cmbSupplier.selectedItem.tostring
MessageBox.Show(SupplierName)
End Sub
The output of this shows the following info:
1. System.Data.DataViewManagerListItemTypeDescriptor but not the name of the supplier selected in the combo box. How Do I overcome it.
The output of this shows the following info:1. System.Data.DataViewManagerListItemTypeDescriptor but not the name of the supplier selected in the combo box. How Do I overcome it.
