'Declaration
 
Public Overloads Shared Function ExecuteDataSet( _
   ByVal commandText As String _
) As DataSet

public static DataSet ExecuteDataSet( 
   string commandText
)

Parameters

commandText

The text command to execute. The default value is an empty string ("").

Return Value

Not all providers return a DataSet with the same structure if no results are returned by the query. Some providers return an empty DataSet. Some providers return a DataSet with a single DataTable which contains zero rows. Test for tables and rows using the Count property on the DataSet and any DataTables before assuming any Tables or Rows exist. 

In no case will the DataSet returned be a null reference (Nothing in Visual Basic).

Reference

SqlHelper Class
SqlHelper Members
Overload List