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Thread: updating datasource???

  1. #1

    Thread Starter
    Lively Member
    Join Date
    Oct 2003
    Location
    Europe, Belgium
    Posts
    84

    Unhappy updating datasource???

    Hi,

    I'm having problems updating a row in a datatable (tblCD) from a dataset (DSlistboxes).

    The table contains the following columns:
    CDID = pk, autonumber
    Programgroup = text
    SubgroupID = number
    CompanyID = number

    The values must be updated by a winform that contains listboxes and a textbox where the user can edit the fields. The CDID is the current record in the datatable.

    The difficult part is to select the current CDID in the datatable that must be edited. I do this by using the the bindingcontext of the dataset but I don't know if this is correct. There is also a problem with the definition of the row : I added the error message in the code (text)

    I use the following code:

    VB Code:
    1. Private Sub BtnEdit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnEdit.Click
    2.         'variables
    3.         'make use of oledbcommandbuilder
    4.         Dim autogen As New OleDbCommandBuilder(DACD)
    5.         Dim datatable As DataTable
    6.         Dim row As DataRow
    7.         Dim strExpr As String
    8.  
    9.         DataConnection.Open()
    10.         datatable = DSListboxes.Tables("tblCD")
    11.         'here I want to select the current CDID
    12.         strExpr = "CDID = " & Me.BindingContext(DSlistboxes, "tblCD").Position
    13.         'error message : value of 1-dimensional array of system.data.datarow cannot be converted to system.data.datarowview
    14.         row = datatable.Select(strExpr)
    15.         'Populate the datarow with values
    16.         row("ProgramGroup") = Me.TextBoxProgramGroup.Text
    17.         row("SubgroupID") = Me.ListBox3.SelectedValue
    18.         row("CompanyID") = Me.ListBoxCompany.SelectedValue
    19.      
    20.         DACD.Update(DSlistboxes, "tblCD")
    21.         'close dataconnection
    22.         DataConnection.Close()
    23.  
    24.  
    25.  
    26.          End Sub


    Can anybody help me, or should I use other code??

    thanx

    tom

  2. #2
    Hyperactive Member
    Join Date
    Mar 2002
    Location
    Dublin (Ireland)
    Posts
    304
    change:

    Dim row As DataRow

    to

    Dim row() As DataRow

    and it should work as you need to declare the datarow as an array for the selec statement on the datatable.

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