MS Access OLEDBConnection to Excel Issue - asp.net

Question

So I have searched for a about 2 days now and while I can find a lot of examples of how to get an Excel worksheet into a gridView, none of them work for me.
This is the goal: I need to read an Excel file, has one worksheet in it and should always be one worksheet in it, into a GridView in ASP.NET website and I am using VB.Net in code behind file.
I tried one way trying to use the Schema of the table name (To get the sheet names) but no matter what the sheet name was it always came back as 'Algrip' of which there is NO sheet with that name in any of the workbooks I an testing with.
So I scrapped that and am now using the this code: (Which does get the job done, sort of)
'Setup Variables
Dim xlConnStr As String = ""
Dim FileName As String = Path.GetFileName(FileUpload1.PostedFile.FileName)
Dim Extension As String = Path.GetExtension(FileUpload1.PostedFile.FileName)
Dim FolderPath As String = ConfigurationManager.AppSettings("FolderPath")
Dim sheetname As String = InputBox("Enter Sheetname: ", "Excel Worksheet name")
'Adjust Sheetname
sheetname = sheetname + "$"
'Set Connection based on Excel File Extension
Select Case Extension
Case ".xls"
'Excel 97-03
xlConnStr = ConfigurationManager.ConnectionStrings("Excel03ConString").ConnectionString
Case ".xlsx"
'Excel 07-Forward
xlConnStr = ConfigurationManager.ConnectionStrings("Excel07ConString").ConnectionString
End Select
xlConnStr = String.Format(xlConnStr, FolderPath & FileName)
Dim connXL As New OleDb.OleDbConnection(xlConnStr)
pnlFileInfo.Visible = True
connXL.Open()
Using xlCmd As New OleDbCommand
xlCmd.CommandType = CommandType.Text
xlCmd.CommandText = ("Select * From [" + sheetname + "]")
xlCmd.Connection = connXL
Using xlDS As New DataSet()
Using xlDA As New OleDbDataAdapter(xlCmd)
xlDA.Fill(xlDS)
gvExcelFile.DataSource = xlDS
gvExcelFile.DataBind()
End Using
End Using
End Using
connXL.Close()
Now my problem is this; On the follwoing line:
xlCmd.CommandText = ("Select * From [" + sheetname + "]")
If I do not have the left and right brackets, because the some sheet names have spaces in them, I get a query error. But if I add the brackets it prompts me twice for the sheet name. For the life of me I can not figure out why.
I have put a break point in on the line listed above and checked the value of the variable sheetname and it is correct but for some reason I get prompted again.
Does anyone have any idea as to why it is doing this? What am I missing? What I ideally wanted was to be able to read the sheet name and feed it to the line with the select statement so that there is no user action required but all I ever got that way was the same bad sheet name 'Algrip'.
The Excel sheet is an xls file but can be saved as xlsx if it would help.
I am open to re-doing the code if i can get it to read the sheet name dynamically.
Thanks for any help!!

Answer 1

try storing the whole command in a variable then assign it to the xlCmd.CommandText using the OleDbCommand constructor
Dim sheetname As String = InputBox("Enter Sheetname: ", "Excel Worksheet name")
sheetname = sheetname & "$"
Dim strQuery As String = "Select * From [" & sheetname & "]"
...
Using xlCmd As New OleDbCommand(strQuery ,connXL)
Using xlDS As New DataSet()
Using xlDA As New OleDbDataAdapter(xlCmd)
xlDA.Fill(xlDS)
gvExcelFile.DataSource = xlDS
gvExcelFile.DataBind()
End Using
End Using
End Using
connXL.Close()