.net - CLR: System.InvalidOperationException: The context connection is already in use -

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I get this error when I try to make a display in the middle of my datestor:

System .United exception: Connection connection is already in use.

Let me repeat all the rows that should be repeated through the data reader because many lines have been returned.

> SqlConnection conn = New SqlConnection ("Reference Connection = True"); 

  SqlCommand CMD = new SqlCommand (); Cmd.Connection = conn; Cmd.CommandType = CommandType.StoredProcedure; Cmd.CommandText = "spClean_Select_Product_For_Delete"; CMD. Comma timeout = 41600; Conn.Open (); SqlDataReader Reader = cmd.ExecuteReader (); Try {SqlContext.Pipe.Send (DateTime.Now.ToString () + "- started working with the product"); While (reader.Read ()) {SqlContext.Pipe.ExecuteAndSend (New SqlCommand ("Product Product from Einfo Productivity =" + Reader ["Product Id"]. ToString ()); } SqlContext.Pipe.Send (DateTime.Now.ToString () + "- Complete the work with the product"); } Finally {conn.Close (); // Always close the call when reading reader.Close (); }   
 
 
 The most likely reason for this exception is that you send the command to be removed We are selecting the record to delete the server at the same time. I suggest that you first collect all the product IDs you want to delete and only delete:  
  Ichling & lt; Int & gt; ProductIds = NewHashet & lt; Int & gt; (); (Var cmer = new SqlCommand ("spClean_Select_Product_For_Delete")) (var reader = cmd.ExecuteReader ()) {var productId = (int) reader ["ProductId"]; ProductIds.Add (productId); }} String deleteCmdString = "Delete the product from the product that has been produced (" + productIdsString + ")"; SqlContext.Pipe.ExecuteAndSend (New SqlCommand (deleteCmdString))  
 
 The above code is probably not full or correct, but you should get this idea.

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