Open Powerpoint Presentation from C# Window Form.

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C#

PowerPoint

desktop

Hello,
i am working on Office PowerPoint 2007 using c#. i want to open the power point document, so i have done some code for the same. but am facing one problem. i have attached code spinet as follow.And i also add the reference of `Microsoft.Office.Interop.PowerPoint.dll

Microsoft.Office.Interop.PowerPoint.Application ppApp = new Microsoft.Office.Interop.PowerPoint.Application();
            ppApp.Visible = Microsoft.Office.Core.MsoTriState.msoTrue;
            Microsoft.Office.Interop.PowerPoint.Presentations oPresSet = ppApp.Presentations;
            Microsoft.Office.Interop.PowerPoint._Presentation oPres = oPresSet.Open(@"D:\Office\temp.pptx", Microsoft.Office.Core.MsoTriState.msoFalse, Microsoft.Office.Core.MsoTriState.msoFalse,
            Microsoft.Office.Core.MsoTriState.msoTrue);

But i got error message like this


The type 'Microsoft.Office.Core.MsoTriState' is defined in an assembly that is not referenced. You must add a reference to assembly 'office, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c'.


i try to search this error on google but i can't get proper way to solve this error.

How can i solve it ?