An exception of type 'System.NullReferenceException' occurred in eBayInventoryManagmentSystem.dll but was not handled in user code

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C#

IEnumerable<datarow> query1 = from myRow in result.Tables["Sheet1"].AsEnumerable()
                              where myRow.Field<string>("Action") == "AddFixedPriceItem"
                              select myRow;

When I trying to upload the excel sheeet "Sheet1" I got the exception .

Posted 13-Aug-15 0:08am

Sambit_Sahoo

Updated 13-Aug-15 0:48am

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

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Andy Lanng · Answer 1 · 2015-08-13T00:37:00

Something here is null when you are using its methods / paramters:

C#

if(result==null)
 throw new Exception("There's your problem");
if(result.Tables==null)
 throw new Exception("There's your problem");
if(result.Tables["Sheet1"]==null)
 throw new Exception("There's your problem");

IEnumerable query1 = from myRow in result.Tables["Sheet1"].AsEnumerable()
where myRow.Field("Action") == "AddFixedPriceItem"

potentially myRow could be null, but I doubt it. myRow.Field("Action") could absolutely be null but you are not trying to access its properties so it won't cause the error