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6 Jun 2015 ... Here Mudassar Ahmed Khan has explained how to open (view) PDF Files on Browser in ASP . Net using C# and VB . Net . This article will explain ... Now that you have an idea of how to hook the imported functions, let's move on to implementing the rest of DeadlockDetection Implementation Highlights One of my primary goals in implementing DeadlockDetection was to make the utility as data-driven and table-driven as possible When you step back and look at what the DLL does in its hook processing, you'll see that the processing is almost identical for each function in Table 15-1 The hooked function gets called, determines whether its class of functions is being monitored, calls the real function, and (if logging is on for that class) logs the information and returns I had to write a bunch of similar hook functions, and I wanted to make them as simple as possible Complicated hook functions are a perfect breeding ground for bugs, and even when you try to make things simple, bugs can creep in. vb.net pdf viewer: PDF Viewer Control Without Acrobat Reader Installed - CodeProject how to open pdf file in vb.net form The C# PDF Library | Iron PDF
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PDFViewer , developers can create any WinForms application to open, view and print PDF document in C# and Visual Basic on . NET (2.0, 3.5, 4.0，4.6 and 4.0 ... The only way to change the default namespace of a .NET Framework Web service is by setting the Namespace property of the WebService attribute, as shown in following code. This example uses a custom path that merges the namespace of the class providing the sample service with the ISBN of this book. [WebService( Namespace="xmlnet/cs/0735618011", Name="Northwind Sales Report Web Service", Description="The Northwind Sales Report Web Service")] The namespace information is used extensively in the WSDL definition of the Web service. In a moment, I'll point out where I had a nasty bug in the DeadlockDetection code for the first edition of this book The best way to show this simplicity is to talk about writing a DeadDetExt DLL A DeadDetExt DLL must have three exported functions The first two, DeadDetExtOpen and DeadDetExtClose, are self-explanatory The interesting function is 552. vb.net pdf text extract: VS 2010 Read TEXT from PDF file-VBForums vb.net pdf viewer open source opening pdf in webbrowser control - CodeProject
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PDF viewer for VB . NET 2010 tutorial shows how to view PDF file from your application using PDF Viewer SDK for Visual Basic . NET . It installs a control that you ... There are several other methods of measuring code complexity. Just about any reasonably well known complexity measurement likely has some merit and has demonstrated some success in identifying areas of code that might contain more bugs or be more difficult to maintain. Complexity measurements are all also quite capable of reporting false positives that is, code that shows high complexity through analysis, but that contains few or no bugs and is simple to maintain. One method for moderating the false positives is to look at several different complexity metrics and combine, merge, or weigh the data to weed out some of the false positives. If several different complexity metrics all classify a function, module, or file as being highly complex, chances are that it actually might be more prone to containing bugs and could be difficult to maintain. On the other hand, if one measurement shows high complexity for a section of code, but other complexity measurements disagree, there is a realistic chance that the code is not too complex, too difficult to maintain, or prone to containing bugs. What do you do with complex code If it's new code, high complexity indicates code that can need refactoring. Some teams at Microsoft have experimented with setting limits on the level of cyclomatic complexity for new functionality. (Most teams that have tried this have discovered that, by itself, vb.net webbrowser control open pdf A simple PDF viewer windows form - Stack Overflow
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As for example, all you have to do is to add a webbrowser control to your form. When you want to open a specific pdf file, you call the Navigate ... DeadDetProcessEvent, which each hook function calls when there is information to write. DeadDetProcessEvent takes a single parameter, a pointer to a DDEVENTINFO structure: typedef struct tagDDEVENTINFO { // The identifier that specifies what is contained in the rest of // this structure. eFuncEnum eFunc ; ; // The pre-call or post-call indicator. ePrePostEnum ePrePost // found. DWORD DWORD DWORD // structure accessing DWORD dwAddr dwThreadId dwRetValue as, ; ; ; below, for the function. When // The thread ID of the calling thread. // The return value for post calls // The parameter information. Cast this to the appropriate described // The return address. This is so the calling function can be The XmlTextReader class provides the basic set of functionalities to process any XML data coming from a disk file, a stream, or a URL. This kind of reader works sequentially, reading one node after the next, and does not deliberately provide any ad hoc search function to parse only a particular subtree. In the .NET Framework, to process only fragments of XML data, excerpted from a variety of sources, you can take one of two routes. You can initialize the text reader with the XML string that represents the fragment, or you can use another, more specific, reader class the XmlNodeReader class. The XmlNodeReader class works on the subtree rooted in the XmlNode object passed to the class constructor. A living instance of an XmlNode object is not something you can obtain through a text reader, however. Only the .NET XML DOM parser can create and return an XmlNode object. We'll examine the details of the XmlNodeReader class in 5, along with the .NET XML DOM parser. 41 cyclomatic complexity isn't always an accurate indicator of code that is in need of refactoring.) Other teams, including the Windows team, look at a combination of several different complexity metrics and use the combined data to help determine the risk of changing a component late in the product cycle. Consider, for example, the functions listed in Table 7-3.The OpenAccount function has high cyclomatic complexity but has few calling functions (fan in) and a low number of lines of code. This function might need additional rework to reduce the cyclomatic complexity, or review might show that the code is maintainable and that tests for all branches are easy to create. CloseAccount has a high number of calling functions but few branches. Additional inspection of this function might be warranted to reduce the number of calling functions, but this function probably does not have a significant amount of risk. Of the three functions, UpdatePassword might have the most risk. Cyclomatic complexity is moderate, there are nearly 20 calling functions, and the length of the function is nearly three times the length of the other functions. Of course, you want to test when changes are made to any of the functions, but the metrics for UpdatePassword should make you wary of any changes made at all to that function. Table 7-3: Complexity Examples Open table as spreadsheet Cyclomatic complexity Number of calling functions Lines of code 21 9 3 24 18 42 35 113 // the parameters, treat them as read-only. dwParams ; } DDEVENTINFO , * LPDDEVENTINFO ; The entire output for a single function that appears in Listing 15-1 comes from the information in the DDEVENTINFO structure. Although most of the fields in DDEVENTINFO are self-explanatory, the dwParams field needs special mention. The dwParams field is really a pointer to the parameters as they appear in memory. In 7, I discussed how parameters are passed on the stack. Just to jog your memory, parameters for __stdcall and __cdecl functions are passed right to left and the stack grows from high memory to low memory. The dwParams field in the DDEVENTINFO structure points to the last parameter on the stack, so the structure lists the parameters in left-to-right order. I applied a little creative casting to make it easy to convert dwParams. In DEADLOCKDETECTION.H, I provide typedefs that describe each intercepted function's parameter lists. For example, if eFunc were eWaitForSingleObjectEx, you would cast dwParams to LPWAITFORSINGLEOBJECTEX_PARAMS to get the parameters. To see all this creative casting in action, check out the TEXTFILEDDEXT.DLL code included with the sample files. Although output processing is relatively easy, gathering the information can be difficult. I wanted DeadlockDetection to hook the synchronization functions in Table 15-1, but I didn't want the hook functions to change the behavior of the real functions. I also wanted to get the parameters and the return value and to write the hook functions in C/C++ easily. I spent quite a while with the debugger and the disassembler before I got it right. 553 Initially, I wrote all the hook functions so that they were just pass-through functions and called the real functions directly This approach worked great Then I put the parameters and the return value for the functions into local variables Getting the value returned from the real function was simple, but because I started implementation of DeadlockDetection with Visual C++ 6, I didn't have a clean way to get the return address in my C/C++ hook function Visual C++ NET now offers the _ReturnAddress intrinsic, but that was not available in Visual C++ 6 I needed the DWORD right before the current stack pointer Unfortunately, in straight C/C++, the function prolog would've already done its magic by the time I could get control, so the stack pointer would've already moved away from where it needed to be. If you have ever used Microsoft XML Core Services (MSXML) the Microsoft COM XML parser you have certainly noticed that it allows you to initialize the parser from a well-formed XML string However, the long list of constructors that the XmlTextReader class boasts gives no clear indication that that same MSXML feature is also supplied by the NET Framework In this section, you'll learn how to parse XML data stored in a memory string First I'll show you how to work with plain strings with no context information, and then I'll show you how to process XML fragments using specific context information for the parser, such as namespaces and document type declarations Parsing Well-Formed XML Strings The trick to initializing a text reader from a string is all in packing the string into a StringReader object. The latest version of the Microsoft Visual Studio toolset contains measurements for complexity metrics, including cyclomatic complexity; Halstead metrics, shown in Figure 7-3 as maintainability index; and lines of code. vb.net wpf pdf viewer Embed PDF into a VB . NET form using Adobe Reader Component
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