ASP.NET Web PDF Document Viewer/Editor Control Library

this.ClientScript.RegisterClientScriptInclude ("Interdepends", "Interdepends.js"); The first parameter is a name, or a key really, that prevents the same include from being added to a single page multiple times. The second is the URL of the script file. This simplified call automatically generates the script include element for us. The last change you ll make is to use the RegisterClientScriptBlock method of the script manager to inject the dynamically generated array declarations onto the page, instead of using the PlaceHolder. You ll replace this line of code: plScript.Controls.Add(new LiteralControl(sb.ToString())); with this one: this.ClientScript.RegisterClientScriptBlock (this.GetType(), "InterArrays", sb.ToString()); This simple change prevents the same block of script from being loaded more than once. If you broke these lists out into their own control (UserControl or custom control), you d actually want more than one of these sets of array declarations, as you would need a unique set for each instance of the control on the page. This would require you to incorporate the ClientID attribute of the control into the array names, in order to avoid naming conflicts on the client. The client script manager is a nice improvement over the disjointed state of affairs for scripting in 1.x. While existing code will continue to work, the new features and methods of the script manager will be nice to leverage as you move forward into 2.0 development.

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Run2 1 0 2 1 0 1 1 6 1 0 180,019 190,028 190,028 190,71 383,485

Consider using static methods to hold a Create function instead of revealing object constructors: type HashTable<'k,'v> with static member Create : IHashProvider<'k> -> HashTable<'k,'v> Recommendation: Avoid revealing concrete data representations such as records. Where possible, avoid revealing concrete representations such as records, fields, and implementation inheritance hierarchies in framework APIs. The rationale for this is that one of the overriding aims of library design is to avoid revealing concrete representations of objects. For example, the concrete representation of System. DateTime values is not revealed by the external, public API of the .NET library design. At runtime the Common Language Runtime knows the committed implementation that will be used throughout execution. However, compiled code does not itself pick up dependencies on the concrete representation. Recommendation: Use active patterns to hide the implementations of discriminated unions. Where possible, avoid using large discriminated unions in framework APIs, especially if you expect there is a chance that the representation of information in the discriminated union will undergo revision and change. For frameworks, you should typically hide the type altogether or use active patterns to reveal the ability to pattern match over language constructs. We described active patterns in 9. This does not apply to the use of discriminated unions internal to an assembly or to an application. Likewise, it doesn t apply if the only likely future change is the addition of further cases and you are willing to require that client code be revised for these cases. Finally, active patterns can incur a performance overhead, and this should be measured and tested, though their benefits will frequently outweigh this cost.

Diff 1 -1 1 1 -1 -1 1 1 1 -40,000 179,949 189,947 189,947 189,951 379,822

Another common problem has been resolved in 2.0 using client-side script. This is the problem of control focus. It s very common to need to programmatically determine the focus of a control. When using custom validation on the server, it s nice to set the focus to the first control that s found to be in an invalid state. This way the user is ready to correct the problem as soon as the postback completes and the browser refreshes. Doing this in 1.x was possible, but it required awkward, and sometimes arbitrary, code generation. In 2.0, the Control type exposes the Focus method. This can be called on any control on the page. The control automatically generates the appropriate client-side script to ensure the focus is placed there when the page is displayed in the browser.

Note The rationale for this is that using large, volatile discriminated unions freely in APIs will encourage