Constructor is a special method of the class that is automatically invoked when an instance of the class is created is called a constructor. The main use of constructors is to initialize the private fields of the class while creating an instance for the class. When you have not created a constructor in the class, the compiler […]
The issue occurs in Batch Edit Mode, because in this mode an empty invisible row is created and used for further grid editing. Since the Eval method returns a value type of an object, your attempt to call the ToString() method to the null value can lead to an exception. If you remove this conversion and use <%# […]
Are you writing a query that selects data from a table with lots of columns? Does the select list we need to have all or almost all of these columns? Remember, that it is possible to drag and drop objects from Object Explorer to the Query Window. By dragging and dropping the “Columns” node under […]