Thanks for your quick response Laurence. The new method works, but [the new] ImportDatabale() takes the datatable and starts on a cell and assumes the next column in the datasource belongs in the next column in the excel file. In most cases this would work and I could code my project this way.
I was looking at the SmartTags feature and it is really nice. Using SmartTags would allow a lot of flexibility in the templates I need to modify. However, I think I found two bugs. The excel templates I need to edit are sitting on a server. I have a user interface to choose what columns need to go in a template. Each column has a starting cell. Since the user can’t possible know what the smarttags would be to point to a Table.Column I need to open the template and check for the smarttag in the starting cell for each custom column the user wants. If the smarttag is not there I need to add it. Then open the excel file (with the smarttags) using the ExcelDesigner, set the datasource and process.
I get a “File Already Exists” error when I try to save over the original excel file after I attempt to add smarttags. So, I tried to open the excel file, add the necessary smarttags and save the file with another name. I receive another error when I try to open the second file using the ExcelDesigner. The error is “Access denied because another user has the file open and locked...”
I’d rater not have to save a second “TAGGED” version of every excel template I need to modify. As for the second error I don’t see a way to “close” the excel file so I can open it again. My code is below…
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim ee As Excel.Excel
Dim ed As Excel.ExcelDesigner
Dim ecs As Excel.Cells
Dim fn As String = "c:\" & Guid.NewGuid.ToString & ".xls"
Dim strTemplate As String
strTemplate = "C:\TEST.xls"
ee = New Excel.Excel
If .Worksheets(0).Cells("B14").StringValue <> "&=CUSTOMERS.FNAME" Then
If .Worksheets(0).Cells("C14").StringValue <> "&=CUSTOMERS.LNAME" Then
.Save(strTemplate, Excel.SaveType.Default) 'ERROR WHEN SAVING OVER TEMPLATE
ed = New Excel.ExcelDesigner
.Open(strTemplate) 'ERROR HERE WHEN I OPEN MODIFIED TEMPLATE.
Private Function Create_Datasource() As DataTable
Dim intLoop As Integer
Dim dt As New DataTable("CUSTOMERS")
Dim dr As DataRow
For intLoop = 0 To 20
dr = dt.NewRow
dr.Item("FNAME") = "first" & intLoop
dr.Item("LNAME") = "last" & intLoop
Create_Datasource = dt