Matrix DataSources

Question

Hi,
I'm new to the SAP SDK and just trying to work thru some basics regarding the Matrix object.
I modified the Sales Order Form by adding a new Tab/Folder to it.
On that Tab, I added a 2 column matrix.
I added the system OCRD table as a DBDataSource to the form.
When I try to Bind the matrix columns to columns in the OCRD table, I get the following error.
ComException: Data Source - Not User Data Source.
Here's snippets of the code:
<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
' Add the DataSources to the Form
oForm.DataSources.DBDataSources.Add("OCRD")
' Use an existing item for placement
oItem = oForm.Items.Item("19")
' Matrix
oNewItem = oForm.Items.Add("NWMatrix",APbouiCOM.BoFormItemTypes.it_MATRIX)
            oNewItem.Top = oItem.Top
            oNewItem.Left = oItem.Left
            oNewItem.FromPane = 5
            oNewItem.ToPane = 5
            oNewItem.Width = 400
            oNewItem.Height = 100
            oMatrix = oNewItem.Specific
            oColumns = oMatrix.Columns
' Add the First Column
            oColumn = oColumns.Add("Code", SAPbouiCOM.BoFormItemTypes.it_EDIT)
            oColumn.TitleObject.Caption = "Customer ID"
            oColumn.Editable = False
            oColumn.Width = 100
' Add the Second Column
            oColumn = oColumns.Add("Name", SAPbouiCOM.BoFormItemTypes.it_EDIT)
            oColumn.TitleObject.Caption = "Customer Name"
            oColumn.Editable = False
            oColumn.Width = 100
            oMatrix = oForm.Items.Item("NWMatrix").Specific
            oColumns = oMatrix.Columns
            oColumn = oColumns.Item("Code")
' Try to Set the Bind to the CardCode Field
' Error is thrown from this line
            oColumn.DataBind.SetBound(True, "OCRD", "CardCode")
            ' get the datasource
            oDBDataSource = oForm.DataSources.DBDataSources.Item("OCRD")
            ' Get the matrix
            oMatrix = oForm.Items.Item("NWMatrix").Specific
            oMatrix.Clear()
            ' Query the datasource
            oDBDataSource.Query()
            Dim i As Integer = 0
            Do While i < (oDBDataSource.Size - 1)
                oDBDataSource.Offset = i
                oMatrix.AddRow()
                i = i + 1
            Loop
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
I'm unsure of why the error is coming up.
After reading the tutorials and documentation, from what I understand, a matrix is just a 2 dimensional data container.
Also, how do you use UserDataSources? Can you link to external tables, files, web services and have that data displayed within SAP matrix or Grids?
I see how to bind the UserDataSources, but where/how does the Addon figure out where to get that UserDataSource from just the line
oForm.DataSources.UserDataSources.Add("NWData", SAPbouiCOM.BoDataType.dt_LONG_TEXT, 50)??
Where do you specify where "NWData" is coming from?
Cheers,
Pete

Answer 1

Hi,
Following is the code which is used to link DB to matrix
<u>  '// getting the matrix column by the UID
        oColumn = oColumns.Item("DSCardCode")
        'oColumn.DataBind.SetBound(True, "", "IntPhone")
        oColumn.DataBind.SetBound(True, "OITM", "ITEMCODE")
        oColumn = oColumns.Item("DSCardName")
        'oColumn.DataBind.SetBound(True, "", "IntPhone")
        oColumn.DataBind.SetBound(True, "OITM", "ITEMNAME")
        oColumn = oColumns.Item("DSPhone")
        oColumn.DataBind.SetBound(True, "", "IntPhone")
        oColumn = oColumns.Item("DSPhoneInt")
        oColumn.DataBind.SetBound(True, "", "IntPhone")
        'oEditText.DataBind.SetBound(True, "", "EditSource")</u>