如何检查存储过程的返回值

Question

I have a stored procedure that returns a list of numbers in the case that the input id matches the table id. My question is, how do I check to see if the result being returned from the stored procedure isn't null? I just need to know if the returned value is 0(failed) or if the returned values are the numbers. Since I have a boolean variable that I want to set if there is valid data returned(not 0).

Here is my stored procedure:

      @InvestigatorID int
as
select DeleteTasks
from InvestigatorPermissionsTasks
where InvestigatorID = @InvestigatorID

Valid data returned looks like column name "exhibitID" value "123"/ column name "number" value "1-2-3-2"

Answer 1

Since you are not using an OUTPUT variable, you will get a recordset returned. If there are no records in the recordset, the query "failed". Otherwise, it was successful and matched at least one record.

Answer 2

You can try with your Filled DataTable

var adapter =  new SqlDataAdapter(YourCommand);
DataSet dataSet =  new DataSet();
adapter.Fill(dataSet);
YourTable = dataSet.Tables[0];    
if(YourTable != null)
{
   if(YourTable.Rows.Count > 0)
   { 

   }
}

Link : http://msdn.microsoft.com/fr-fr/library/system.data.common.dataadapter.fill(v=vs.80).aspx