TAILIEUCHUNG - apress pro silverlight 3 in c sharp phần 10

Tham khảo tài liệu 'apress pro silverlight 3 in c sharp phần 10', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | CHAPTER 18 ISOLATED STORAGE Upload started. else Files must be less than 5 MB. catch Error reading file. private void client_UploadFileCompleted object sender e if null Upload succeeded. Refresh the file list. else Upload failed. This completes the example and gives you a fully functional client that can transfer content to and from the web server. The Last Word In this chapter you saw how Silverlight allows you to access the local hard drive but with careful restrictions in place. First you took a thorough look at isolated storage the obfuscated space-limited storage location that you can use to store miscellaneous data serialized objects and application settings. Then you saw how you can use the OpenFileDialog class to retrieve information from a user-selected file anywhere on the hard drive and how to use SaveFileDialog to perform the reverse feat and write to user-selected file. These features give Silverlight applications an impressive balance of safety and performance ensuring that malicious applications can t tamper with local files or read sensitive data but that legitimate software can store details from one user session to the next. 656 CHAPTER 19 Multithreading One of Silverlight s least expected surprises is its support for multithreading the fine art of executing more than one piece of code at the same time. It s a key part of the full .NET Framework and a commonly used feature in rich client applications built with WPF and Windows Forms. However multithreading hasn t appeared in the toolkit of most browserbased developers and it s notably absent from both JavaScript and Flash. The second surprise is how similar Silverlight s threading tools are to those in the full .NET Framework. As with ordinary .NET programming Silverlight developers can create new threads with the Thread class manage a .

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