excel - "Open an existing file in Spreadsheetgear using VB.Net -

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I am trying to open an existing file in WorkBookView (named WkbMain in the code given below) I have been using the following code on my windows form: 

  Private sub MenuItemOpen_Click (as the object, in the form of e EventArgs Try slow lObjDialog New OpenFileDialog () as wkbMain.GetLock () then try lObjDialog.ShowDialog () = DialogResult.OK then wkbMain = SpreadsheetGear.Factory.GetWorkbook (lObjDialog.FileName, System.Globalization.CultureInfo.CurrentCulture) East In the end, try wkbMain.ReleaseLock () end end as the exception

but if the job 

  wkbMain = SpreadsheetGear.Factory.GetWorkbook (lObjDialog. FileName, System.Globalization.CultureInfo.CurrentCulture) `)

throws an exception:

to type 'SpreadsheetGear.Windows.Forms.WorkbookView Unable to cast a type of 'ᢷ' type.

Please suggest a solution

Setting a Workbook View Will happen. The property property obtained by Factory.GetWorkbook (...), not your own example on the workbook item: 

  wkbMain.ActiveWorkbook = SpreadsheetGear.Factory.GetWorkbook (lObjDialog.FileName, System.Globalization. CultureInfo.CurrentCulture))

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