ndde c# with excel stopped working

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  I use the ndde (dynamic data exchange) to exchange real-time data between my c# application and Excel. 
  
  My C# application have a datagrid of about 100 columns and 180 rows and the grid data are updated continuous. my problem is when I take all the columns to excel in dde format to exchange data, the excel is stopped working. but when I take less columns about 70 only, it works well. 
  
  How to overcome that?

  Wednesday, April 29, 2015 1:40 PM