An SQL injection attack “injects” or manipulates SQL code by adding unexpected SQL to a query. Many web pages take parameters from web user, and make SQL query to the database. Take for instance when a user login, web page that user name and password and make SQL query to… Continue reading
ASP.NET 4 includes a number of application folders that are specific to the ASP.NET Framework. In addition to the Bin folder that was a reserved folder in ASP.NET 1.x, the following folders are all reserved in ASP.NET 2.0, 3.5, and 4: Bin: This folder stores the application DLL and any… Continue reading
All types and type members have an accessibility level, which controls whether they can be used from other code in your assembly or other assemblies. You can use the following access modifiers to specify the accessibility of a type or member when you declare it: public: The type or member… Continue reading
ASP.NET uses the global.asax to establish any global objects that your Web application uses. The .asax extension denotes an application file rather than .aspx for a page file. Each ASP.NET application can contain at most one global.asax file. The file is compiled on the first page hit to your Web… Continue reading
Suppose we have a very simple action method: it takes no parameters and just returns a string: public string MyTestMethod() { return “Test String”; } What if we would like to call this action method from javascript through Ajax and to display the value it returns? We can do it… Continue reading
Just call SetNoStore on the HttpCachePolicy object exposed through the Response object’s Cache property, as demonstrated here: <%@ Page Language=”C#” %> <html> <body> <% Response.Cache.SetNoStore (); Response.Write (DateTime.Now.ToLongTimeString ()); %> </body> </html> SetNoStore works by returning a Cache-Control: private, no-store header in the HTTP response. In this example, it prevents… Continue reading
What is an Event? Each of these is similar because it allows a direct command to be given to a class or object within the flow of a program. This is similar to the early programming languages, which simply processed a sequence of commands and loops until complete. The sequential… Continue reading
The common language runtime exposes COM objects through a proxy called the runtime callable wrapper (RCW). Although the RCW appears to be an ordinary object to .NET clients, its primary function is to marshal calls between a .NET client and a COM object.
8060 bytes. Don’t be surprised with questions like ‘what is the maximum number of columns per table’. Check out SQL Server books online for the page titled: “Maximum Capacity Specifications”.
Triggers are special kind of stored procedures that get executed automatically when an INSERT, UPDATE or DELETE operation takes place on a table. In SQL Server 6.5 you could define only 3 triggers per table, one for INSERT, one for UPDATE and one for DELETE. From SQL Server 7.0 onwards,… Continue reading