Manipulating Excel in ASP.net

'  creat a Application object        
    oXL = New ApplicationClass()

Hi I am getting an error with the code above. Do I need to add a reference to my ASP.net project?
Error      1      Interop type 'ApplicationClass' cannot be embedded. Use the applicable interface instead.      C:\Users\User\Documents\Visual Studio 2010\Projects\Excel1\Excel1\Default.aspx.vb      26      19      Excel1
Murray BrownMicrosoft Cloud Azure/Excel Solution DeveloperAsked:
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MlandaTCommented:
You're meant to use Application rather than ApplicationClass.

However, check to ake sure that you have a reference to: Microsoft.Office.Interop.Excel in your project
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Carlos VillegasFull Stack .NET DeveloperCommented:
Did you tried?
Dim app As New Microsoft.Office.Interop.Excel.Application

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What Excel references are you using? may be "Microsoft Excel 12.0 Object Library"?
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MlandaTCommented:
You need to declare the variable as Microsoft.Office.Interop.Excel.Application, but instantiate it as Microsoft.Office.Interop.Excel.ApplicationClass.

Dim app As Microsoft.Office.Interop.Excel.Application = New Microsoft.Office.Interop.Excel.ApplicationClass

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Carlos VillegasFull Stack .NET DeveloperCommented:
Another tip, If you plan to manipulate Excel files, I recommend you to use OleDb (Microsoft Jet 4.0), it have better performance but it's more limited.
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Murray BrownMicrosoft Cloud Azure/Excel Solution DeveloperAuthor Commented:
thanks
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