Open XLS File in a new window - asp.net

Question

I have simple Question and I would love to if someone can show me how to do it correctly,
I have a function that retrieving data
From the DB and I want to by click on button to export all the data to excel File
the thing is the file been saved on my C:\ drive and I want to open the file in a new window
or making saveFileDialog how can I do this?
Private Sub DatatableToExcel(ByVal dtTemp As DataTable)
Dim _excel As New Microsoft.Office.Interop.Excel.Application
Dim wBook As Microsoft.Office.Interop.Excel.Workbook
Dim wSheet As Microsoft.Office.Interop.Excel.Worksheet
wBook = _excel.Workbooks.Add()
wSheet = wBook.ActiveSheet()
Dim dt As System.Data.DataTable = dtTemp
Dim dc As System.Data.DataColumn
Dim dr As System.Data.DataRow
Dim colIndex As Integer = 0
Dim rowIndex As Integer = 0
For Each dc In dt.Columns
colIndex = colIndex + 1
_excel.Cells(1, colIndex) = dc.ColumnName
Next
For Each dr In dt.Rows
rowIndex = rowIndex + 1
colIndex = 0
For Each dc In dt.Columns
colIndex = colIndex + 1
_excel.Cells(rowIndex + 1, colIndex) = dr(dc.ColumnName)
Next
Next
wSheet.Columns.AutoFit()
Dim strFileName As String = "C:\Testing.xlsx"
If System.IO.File.Exists(strFileName) Then
System.IO.File.Delete(strFileName)
End If
wBook.SaveAs(strFileName)
wBook.Close()
_excel.Quit()
End Sub

Answer 1

Process.Start with you're Excel file name as parameter.