Yes, it is possible to achieve this by using MemoryStream. Please refer to the following code snippet which demonstrates a similar approach:
Dim spreadExporter As GridViewSpreadExport = New GridViewSpreadExport(Me.radGridView1)
Dim stream As Stream = New MemoryStream()
Dim fullPath As String = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData)
Dim fileName As String = Path.Combine(fullPath, "export.xlsx")
Using fs As FileStream = New FileStream(fileName, FileMode.OpenOrCreate)
I hope this helps. Should you have any other questions do not hesitate to ask.
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