Microsoft.CSharp.RuntimeBinder.RuntimeBinderException

 Microsoft.CSharp.RuntimeBinder.RuntimeBinderException

  HResult=0x80131500

  Message='object' does not contain a definition for 'get_Range'

  Source=System.Core

  StackTrace:

   at System.Dynamic.UpdateDelegates.UpdateAndExecute3[T0,T1,T2,TRet](CallSite site, T0 arg0, T1 arg1, T2 arg2)

   at CostOfPurchase.SummaryViewer.exportToExcelToolStripMenuItem1_Click(Object sender, EventArgs e) in C:\MP Lighting\MPManagementSystem_Julia_2017\CostOfPurchase\SummaryViewer.cs:line 102

  This exception was originally thrown at this call stack:

    [External Code]

    CostOfPurchase.SummaryViewer.exportToExcelToolStripMenuItem1_Click(object, System.EventArgs) in SummaryViewer.cs