Tip Bank

Detect the client’s screen resolution using Javascript and then stuff it into an ASP variable!

‘ Return the absolute Url of a secured page (that uses the https protocol)’ The input string is the page’s relative path’ Example: Dim url As String = GetSecuredPageUrl(“./Admin/Login.aspx”)Function GetAbsoluteSecuredPageUrl(ByVal

‘ Return the value of the specified custom key, stored in the Web.Config file.’ If the value has been already requested before, the function returns its ‘ cached value.’ The

‘ Output an image as a binary stream to the Response objectSub ShowImage(ByVal bmp As Bitmap) ‘ Clear current content and set returned content type HttpContext.Current.Response.Clear() HttpContext.Current.Response.ContentType = “image/jpeg” ‘

‘ Convert a string to its ASCII representation’ Example: Response.Write(AsciiEncode(“hello”))’ ==> hello” Note: this may be useful when you’re producing the code for HTML forms with ‘ hidden/visible field, and

‘ A custom routine that works like FormsAuthentication.RedirectFromLoginPage ‘ but lets you control the authentication cookie’s expiration date’ Example: create an auth cookie that lasts 7 days’ RedirectFromLoginPageEx(username, persistent, 7)Function

If you develop a custom control and want to give the option to output client-side javascript code, you’ll likely have a EnableClientScript that allows the developer to specify whether the

Sometimes it is very helpful to use a JavaScript feature that supports adding properties to build-in prototype “Objects” at runtime. It is generally known that Netscape 4.x has problems in

Say you have a column in a SQL Server table that allows NULL values. You want this column to be unique when it has a value other than NULL. What’s