title: The SelectCommand property has not been initialized before calling 'Fill
body: <p>Im trying to upload some records from an excel file and got that error when uploaded the source to the server. </p>
  
  <pre><code>`sqlQuery = "Select * from [Sheet1$]"
      oleConn = New OleDb.OleDbConnection
      oleConn.ConnectionString = conString
      If oleConn.State = ConnectionState.Closed Then oleConn.Open()
  
      oleCmd = New OleDb.OleDbCommand(sqlQuery, oleConn)
      oleCmd.Connection = oleConn
      oleCmd.CommandText = "Select * from [Sheet1$]"'--tried to add this but gettin the same error
      oleCmd.CommandType = CommandType.Text'--and this
  
      oleDa = New OleDb.OleDbDataAdapter(oleCmd)
      oleDa.SelectCommand = oleCmd
      oleDa.Fill(oleDs)
      oleCmd.Dispose()
  
      If oleConn.State = ConnectionState.Open Then oleConn.Close()
      Return oleDs` 
  </code></pre>