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Help with loading data from excel file by workbook's name

Posted on 2014-11-05
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Last Modified: 2014-11-06
Hi,

How do I modify the code below to load my DataGrids with multiple workbooks from an excel file by using the name of the workbook, when attempting to use the current approach the workbook does not match ds.Tables(x). For example the 5th workbook does not match ds.Tables(5)

 Try
          
            ' InitializeComponent()
            'MsgBox(username.Text)
            '  Dim filename As String = "\Data\MasterFiles\combineSheets.xls"
            Dim filename As String = Application.StartupPath & "\Data\MasterFilesExcel\MasterFiles" & username.Text & ".xls"

            'Dim filename As String = Application.StartupPath & "\Data\LinkFiles\aop29combinedaa.xls"
            Dim myConnection As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0; " & "data source='" & filename & "';" & "Extended Properties=""Excel 12.0;HDR=YES;IMEX=1"" ")
            myConnection.Open()
            Dim mySheets As DataTable = myConnection.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, New Object() {Nothing, Nothing, Nothing, "TABLE"})
            ' Dim ds As New DataSet()
            'Dim dt As DataTable

            For i As Integer = 0 To mySheets.Rows.Count - 1
                dt = makeDataTableFromSheetName(filename, mySheets.Rows(i)("TABLE_NAME").ToString())
                ds.Tables.Add(dt)
            Next
            Master.Visible = True
            Master.C1TrueDBGrid1.DataSource = ds.Tables(1)
            Master.C1TrueDBGrid1.Splits(0).DisplayColumns(0).AutoSize()
            Master.C1TrueDBGrid1.Splits(0).DisplayColumns(1).AutoSize()
            Master.C1TrueDBGrid1.Splits(0).DisplayColumns(2).Visible = False
            '****************************************************************************
            Master.C1TrueDBGrid2.DataSource = ds.Tables(13)
            Master.C1TrueDBGrid2.Splits(0).HighLightRowStyle.BackColor = Drawing.Color.Blue
            Master.C1TrueDBGrid2.Splits(0).HighLightRowStyle.ForeColor = Drawing.Color.White

            'For Each row As DataRow In dtsetcol13.Tables(0).Rows
            'Master.C1TrueDBGrid2.Columns("C_ID").ValueItems.Values.Add(New C1.Win.C1TrueDBGrid.ValueItem(row("C_ID"), row("C_ID")))
            'Next

            ' Master.C1TrueDBGrid2.Columns("C_ID").ValueItems.Validate = True
            'Master.C1TrueDBGrid2.Columns("C_ID").ValueItems.Presentation = C1.Win.C1TrueDBGrid.PresentationEnum.SortedComboBox
            ' Master.C1TrueDBGrid2.Columns(0).Caption = "W_ID"
            'Master.C1TrueDBGrid2.Splits(0).DisplayColumns(0).AutoSize()
            Master.C1TrueDBGrid2.Splits(0).DisplayColumns(0).AutoSize()
            Master.C1TrueDBGrid2.Splits(0).DisplayColumns(1).AutoSize()
             Master.C1TrueDBGrid2.Splits(0).DisplayColumns(2).Visible = False
                     '****************************************************************************
            'Exit Sub
            Master.C1TrueDBGrid3.DataSource = ds.Tables(10)

            Master.C1TrueDBGrid4.DataSource = ds.Tables(12)
            Master.C1TrueDBGrid5.DataSource = Nothing

            Master.C1TrueDBGrid7.DataSource = ds.Tables(11)
            Master.C1TrueDBGrid8.DataSource = ds.Tables(6)
            Master.C1TrueDBGrid9.DataSource = ds.Tables(9)
            Master.C1TrueDBGrid10.DataSource = Nothing
            Master.C1TrueDBGrid11.DataSource = Nothing
            Master.C1TrueDBGrid6.DataSource = ds.Tables(0)

            Master.C1TrueDBGrid13.DataSource = ds.Tables(10)
            Master.C1TrueDBGrid14.DataSource = ds.Tables(6)
            Master.C1TrueDBGrid15.DataSource = ds.Tables(4)
            Master.C1TrueDBGrid16.DataSource = ds.Tables(5)
            Master.C1TrueDBGrid17.DataSource = ds.Tables(9)

            Master.C1TrueDBGrid18.DataSource = ds.Tables(13)
            Master.C1TrueDBGrid19.DataSource = ds.Tables(14)
            Master.C1TrueDBGrid20.DataSource = Nothing
            Master.C1TrueDBGrid21.DataSource = Nothing

           
        Catch

            MsgBox(Err.Description)
        End Try

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Question by:vcharles
3 Comments
 
LVL 32

Accepted Solution

by:
Robberbaron (robr) earned 500 total points
ID: 40426004
dont know what the makeDataTableFromSheetName does exactly , but may be good idea to set name of table as i dont believe you can be certain of the order.

and in any case , ds.Tables(5) would be the sixth , as it starts from zero.

            For i As Integer = 0 To mySheets.Rows.Count - 1
                dt = makeDataTableFromSheetName(filename, mySheets.Rows(i)("TABLE_NAME").ToString()).
                dt.Name = filename    '<<< check for valid characters ??
                ds.Tables.Add(dt)
            Next

now you can use ds.Tables("myName1") instead of ds.Tables(11)
0
 
LVL 96

Expert Comment

by:Bob Learned
ID: 40426238
"For example the 5th workbook does not match ds.Tables(5)"
Since the collection is 0-based, the 5th worksheet would be ds.Tables(4).
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Author Closing Comment

by:vcharles
ID: 40426257
Thank You!
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