... PictureBox_DragDrop(ByVal sender As System.Object, ByVal e As _
System.Windows.Forms.DragEventArgs) Handles hinhbentrai.DragDrop, _
hinhbenphai.DragDrop
'Xử lý sự kiện DragDrop, và điều ... TreeView_DragDrop thủ tục này có tác dụng khởi tạo việc kéo thả.
Private Sub TreeView_DragDrop(ByVal sender As System.Object, _
ByVal e As System.Windows.Forms.DragEventArgs) Handles _
tvwLeft.DragDrop, ... (e.Data.GetDataPresent(DataFormats.Bitmap)) Then
e.Effect = DragDropEffects.Move
Else
e.Effect = DragDropEffects.None
End If
End Sub
Tạo thủ tục PictureBox_Dragdrop thủ tục này có tác dụng xử lý sự kiện...
... valid file
If (Not File1 .PostedFile Is Nothing) _
And (File1 .PostedFile.ContentLength > 0) Then
'determine file name
Dim sFileName As String = _
System.IO.Path.GetFileName (File1 .PostedFile.FileName) ... System.IO.Path.GetFileName (File1 .PostedFile.FileName)
Try
If File1 .PostedFile.ContentLength <= lMaxFileSize Then
'save file on disk
File1 .PostedFile.SaveAs(sFileDir + sFileName)
lblMessage.Visible ... liệu hoặc file cấu hình XML. sFileDir chỉ định rõ vị trí trên máy chủ để fileupload có thể
được lưu vào. lMaxFileSize chỉ định dung lượng file tối đa cho việc upload.
Thủ tục DeleteFile được...
... 'determine file name
Dim sFileName As String = _
System.IO.Path.GetFileName (File1 .PostedFile.FileName)
Try
If File1 .PostedFile.ContentLength <= lMaxFileSize Then
'save file on disk
File1 .PostedFile.SaveAs(sFileDir ... System.EventArgs) Handles cmdUpload.Click
'check that the file has been selected and it's a valid file
If (Not File1 .PostedFile Is Nothing) _
And (File1 .PostedFile.ContentLength ... File1 .PostedFile.SaveAs(sFileDir + sFileName)
lblMessage.Visible = True
lblMessage.Text = " ;File: " + sFileDir + sFileName + _
" Uploaded Successfully"
Else 'reject file
...
... as an extra layer between
the user’s browser and the web server, Ajax handles server communications in the
background, submitting server requests and processing the returned data. The
results ... server queries and dealing with the returned data, are written in
JavaScript, and XML is an increasingly popular means of coding and transferring for-
matted information used by Ajax to efficiently ... 35
Adding Lines
39
Summary
40
CHAPTER 3:
Anatomy of an Ajax Application 41
The Need for Ajax 41
Introducing Ajax
43
The Constituent Parts of Ajax
45
Putting It All Together
47
Summary
49
16
CHAPTER...
... attaching event handlers inline and using object properties.
Inline handlers are difficult for keeping things separated, and attaching via object properties
means you can attach only one handler at ... CSS, AND JAVASCRIPT 43
7648ch02final.qxd 9/6/07 7:55 PM Page 43
Accelerated DOM Scripting with Ajax, APIs, and Libraries
Copyright â 2007 by Jonathan Snook, Aaron Gustafson, Stuart Langridge, and ... beginning and end of the string, along with replacing any nonspaces with
spaces and then compressing multiple spaces into a single space.
Handling Attributes
You have multiple ways of handling...
... methods; Ajaxand Flash
hacking methods; SOAP, REST, and XML-RPC hacking; RSS/Atom feed attacks;
fuzzing and code review methodologies and tools; and tool building with Python,
Ruby, and .NET. ... Applet, and ActiveX.
Entry Point Disclosure
RIA- and Ajax- driven applications use a lot of client-side code to access backend
applications, and there are several resources buried in Ajax functions. ... fetch XML nodes and make changes
in the HTML DOM nodes.
22
Web 2.0 Security: Defending Ajax, RIA, and SOA
INFORMATION SOURCES AND PROCESSING
Web 2.0 applications use different trusted and untrusted...
... between Sprite LFS and Unix FFS.
This example shows the modified disk blocks written by Sprite LFS and Unix FFS when creating two single-block files named
dir1 /file1 and dir2 /file2 . Each system ... named
dir1 /file1 and dir2 /file2 . Each system must write new data blocks and inodes for file1 and file2 , plus new data blocks
and inodes for the containing directories. Unix FFS requires ten non-sequential ... Networks for Computer Communications, pp.
355-373 North-Holland, (1981).
18. Ross S. Finlayson and David R. Cheriton, ‘‘Log
Files: An Extended File Service Exploiting Write-
Once Storage,’’ Proceedings...
... về tần xuất vấn tin và sửa đổi.
FILE CHỈ MỤC B
+
-CÂY (B
+
-Tree Index file)
Tổ chức file chỉ mục tuần tự có một nhược điếm chính là làm giảm hiệu năng khi file lớn
lên. Để khắc phục nhược ... tìm kiếm này. Các mẩu tin trong file được chỉ mục có thể
chính nó cũng được sắp. Một file có thể có một vài chỉ mục trên những khoá tìm kiếm khác nhau.
Nếu file chứa các mẩu tin được sắp tuần ...
Round Hill A-301 550
ã
file tun t cỏc mu tin account
Trong phần này, ta giả thiết rằng tất cả các file được sắp thứ tự tuần tự trên một khoá tìm
kiếm nào đó. Các file như vậy, với một chỉ...
...
Chapter 6: AJAX Suggest and Autocomplete 165
Introducing AJAX Suggest and Autocomplete 165
Google Suggest 166
Implementing AJAX Suggest and Autocomplete 167
Time for Action AJAX Suggest and Autocomplete ... Reader 224
Implementing the AJAX RSS Reader 225
Time for Action—Building the RSS Reader Application 226
Summary 236
Chapter 10: AJAXDragandDrop 237
Using DragandDrop on the Web 237
Shopping ... scenario, andAJAX comes in to our rescue.
Understanding AJAX
AJAX is an acronym for Asynchronous JavaScript and XML. If you think it doesn't say much, we
agree. Simply put, AJAX can be...
... AJAX
Pro ASP.NET 3.5
in C# 2008
Pro ASP.NET 3.5
Server Controls with
AJAX Components
Pro Silverlight 2.0
Ajax Patterns
and Best Practices
Beginning Web
Development, Silverlight,
and ASP.NET AJAX
www.apress.com
SOURCE CODE ONLINE
Companion ... Style Sheets).
ASP.NET AJAX is a technology that is designed to make Ajax applications much easier to develop,
debug, and deploy. It’s available at
http://asp.net /ajax/
, and will be covered in ... Silverlight, and
ASP.NET AJAX: From Novice to Professional
Dear Reader,
Just when you think you’ve learned all there is to know about developing for the
Web, the market turns around and demands newer and...
... concise and
comprehensible defi nition of user experience (UE).
Understanding the whys and wherefores of UE is the fi rst step to understanding what
Web we want and how to go forward and look ...
with a touch of AJAX. As mentioned, the core of the AJAX model is an internal browser object
and the DOM. The interface of both is defi ned according to standards—still a de facto standard
for XMLHttpRequest ... critical feature or two?
AJAX and New Web Projects
After a decade of increasingly powerful tools and technologies designed for effective and
quick development of Web sites and applications (such...