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Hello Experts, 
 
i started to get this message 
 
&quot;&nbsp;Excel is not decalred&quot; 
 
where i have noticed thtat 
the following lines are no accepted anymore 
 
Imports Microsoft.Office.Core 
Imports Microsoft.VisualBasic 
Imports excel = Microsoft.Office.Interop.Excel 
 
this used to be a perfect performance App 
after reinstalling visual studio this started to appear... 
 
I know I have to add references but in my list there is no Microsoft.Office.Interop.Excel to add to select 
 
yes I do have Microsoft office 2010 licensed installed. 
 
Please your help 
Regards
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</div>

Hello Experts,

i started to get this message

" Excel is not decalred"

where i have noticed thtat
the following lines are no accepted anymore

Imports Microsoft.Office.Core
Imports Microsoft.VisualBasic
Imports excel = Microsoft.Office.Interop.Excel

this used to be a perfect performance App
after reinstalling visual studio this started to appear...

I know I have to add references but in my list there is no Microsoft.Office.Interop.Excel to add to select

yes I do have Microsoft office 2010 licensed installed.

Please your help
Regards

EXCEL IS NOT DECALRED ERROR

Microsoft Excel topics include formulas, formatting, VBA macros and user-defined functions, and everything else related to the spreadsheet user interface, including error messages.

Microsoft Excel

Visual Basic .NET (VB.NET) is an object-oriented programming language implemented on the .NET framework, but also supported on other platforms such as Mono and Silverlight. Microsoft launched VB.NET as the successor to the Visual Basic language. Though it is similar in syntax to  Visual Basic pre-2002, it is not the same technology,

Visual Basic.NET

The .NET Framework is not specific to any one programming language; rather, it includes a library of functions that allows developers to rapidly build applications. Several supported languages include C#, VB.NET, C++ or ASP.NET.