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function that had the crash For example, in Listing 12-1, the first function address greater than the 0x03901038 crash address is 0x03901023, so the function that crashed is MapDLLHappyFunc@@YAPADPAD@Z Any function name that starts with a question mark is a C++ decorated name You're probably wondering why I didn't mention the C++ name decoration when I talked about the calling convention name decoration in 6 Although both serve similar purposes, they come from different places The calling convention name decoration simply tells the code generator how to generate the parameter pushes and stack cleanup, and it comes from the operating system definitions C++ name decoration comes as a result of the language Since you can have overloaded methods, the compiler has to have some way to differentiate them It "decorates" the name with the return type, calling convention, and parameter information.



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Parsing PDF Files using iTextSharp (C#, . NET ) | Square PDF . NET
Sample Visual Studio project download ( VB ). ... Tags: itextsharp pdf parsing c# ... public static string ExtractTextFromPdf(string path) { using ( PdfReader reader ...

Figure 10-7: Constituent parts of a disconnected save-and-resume application. At startup, the application loads data either from the local store or from a centralized repository. Applications can determine what route should be taken first according to their own features and requirements. Likewise, they can provide distinct user interface elements to trigger the local and remote downloads independently. The DataSet object is ideal for storing a disconnected database. It can contain multiple, even indexed, tables, as well as relations and constraints. Once rebuilt, the DataSet object is used to populate the user interface, which also provides for editing. In this chapter and in 9 and 11, we examine the various options available for serializing a DataSet object: .NET Framework formatters, the ADO.NET normal form, DiffGrams, and XML serializers. A disconnected application should allow users to accumulate and review changes to the original through several work sessions. This means that the local data store must persist the state of each change and possibly the history of each row. The DataSet object provides for just this situation. The DataSet object is also ideal for gathering all the modified rows to be submitted to the back-end system for permanent updates. The DataSet object has been designed with disconnection in mind and to be used in save-and-resume applications. In saveand-resume scenarios, the serialization of the object is a critical aspect in improving overall client-side performance and efficiency. Creating the Local Data Store The sample application shown in Figure 10-8 is a simple Windows Forms application containing an editable DataGrid control. The grid is bound to a DataSet object that can be obtained by executing a SQL query or by reading a local DiffGram file.





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Reading Acrofields from PDF Files - CodeProject
29 Sep 2015 ... Variety is the spice of life - rewarding PDF AcroForm reader . ... NET questions · View VB . ... I found was iTextSharp , a library from http://itextpdf.com/ which offers both a ... NET version 4.5 but has been tested using Visual Studio 2013 as well. ... While the PDF file is read , it is scanned for text and form fields .

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PDF Document Reading in C#. net using itext sharp . - CodeProject
PdfReader reader = new PdfReader(path); StringWriter output = new ... PhysicalApplicationPath + "files\\CrtoPDF. pdf "; ExportOptions ex = new ...

That way it will know exactly what function you meant to call To translate the name, pass it as a command-line parameter to the program UNDNAMEEXE, which is included with Visual Studio NET In the example, MapDLLHappyFunc@@YAPADPAD@Z translates into char * __cdecl MapDLLHappyFunc(char *) You probably could have figured out that MapDLLHappyFunc was the function name just by looking at the decorated name Other C++ decorated names are harder to decipher, especially when overloaded functions are used To find the line number, you get to do a little hexadecimal subtraction by using the following formula: (crash address) (preferred load address) 0x1000 Remember that the addresses are offsets from the beginning of the first code section, so the formula does that conversion You can probably guess why you subtract the preferred load address, but you earn extra credit if you know why you still have to subtract 0x1000.

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vb.net read pdf file itextsharp

How to Read PDF and Convert to Stream in C#/ VB
21 Dec 2014 ... Using iTextSharp DLL, we can read the PDF text in efficient manner. ... PopUp window, Select Browse tab and Select iTextSharp dll file ; then, Click Ok. The iTextSharp dll file can be loaded to the project ... Net C#/ VB .

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How to extract plain text from PDF file using PDFBox. NET ... Sample Visual Studio project download ( VB ). ... iTextSharp .text. pdf ; using iTextSharp .text. pdf . parser; // ... public static string ExtractTextFromPdf(string path) { using (PdfReader reader  ...

The crash address is an offset from the beginning of the code section, but the code section isn't the first part of the binary The first part of the binary is the PE (portable executable) header and associated DOS stub, which is 0x1000 bytes long Yes, all Win32 binaries still have that MS-DOS heritage in them I'm not sure why the linker still generates MAP files that require this odd calculation The linker team put in the Rva+Base column a while ago, so I don't see why they didn't just fix up the line number at the same time Once you've calculated the offset, look through the MAP file line information until you find the closest number that isn't over the calculated value Keep in mind that during the generation phase the compiler can jiggle the code around so that the source lines aren't in ascending order.

Figure 10-8: The sample save-and-resume application. The code that populates the data grid looks like this: void PopulateGrid() { if (!File.Exists(m_diffgram)) LoadFromDatabase(); else LoadFromLocalStore(); // Load methods fill the m_dataSet internal property grid.DataSource = m_dataSet; grid.DataMember = "Employees"; } Once the data loads, users can start working and enter changes as appropriate. The DataSet object tracks any changes and signals those changes to the application through the HasChanges method. Here's the code to load the data from the local store: private void LoadFromLocalStore() { // Load the schema into the DataSet m_dataSet.ReadXmlSchema(m_schemaFile); // Load the data m_dataSet.ReadXml(m_diffgramFile, XmlReadMode.DiffGram); } The sample application uses a DiffGram to implement the local store. More precisely, the local store consists of two distinct files one for the data (the DiffGram) and one for the schema. As mentioned, a DiffGram can't be used to populate a DataSet object without schema information. This is not your only option, however. You can use the XML serializer to persist a DataSet object to a file that stores schema and data in the same place. In all these cases, the final output format is XML. If you 380

With my crash example, I used the following formula: 0x03901038 0x03900000 0x1000 = 0x38 If you look through the MAP file in Listing 12-1, you'll see that the closest line that isn't over 0x38 is 39 0001:00000033 (Line 39) in MAPDLLCPP PDB2MAP Map Files After the Fact One issue that keeps coming up when I discuss finding crash addresses with other developers is the lament that you've already got code out in the field in which you don't have MAP files Other eagle eye developers have also pointed out that having perfect MAP files means you have to set the base address of all your DLLs as part of the build If you're working on an existing project that's about to ship, you might not want to destabilize the build by changing a bunch of settings.

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Additionally, without SettingsMaster from 9, Visual Studio doesn't make it convenient to make those global project settings changes 443.

want a more compact format, opt for the binary NET Framework formatter and consider using a ghost class, as described in 9 Reviewing and Rejecting Changes Users of the sample application enter changes through the interface of the DataGrid control Each change is detected, and controls in the user interface are enabled and disabled to reflect those changes For example, the Review Changes button is enabled if there are changes to review Detecting Ongoing Changes In a Windows Forms application, data sources associated with data-bound controls are managed by a special breed of component the binding manager BindingManagerBase is the abstract class for binding managers; the actual classes you will work with are CurrencyManager and PropertyManager The PropertyManager class keeps track of a simple binding between a data-bound control property and a data source scalar value The CurrencyManager class plays a more sophisticated role.

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That's a primary reason why people simply default to using REBASEEXE to take care of setting their DLL's base addresses Being one not to let any challenge go unmet, I took a look at the problem Really all I needed was a way to enumerate functions, source files, and source lines Given that the DBGHELPDLL symbol engine already does that, it was a piece of cake to take the next step to generate a MAP file from a PDB file The first problem I ran into was that the SymGetSymNext and SymGetSymPrev functions don't return what you would expect I thought I could get an address in a source file, call SymGetSymPrev until I got to the beginning of the source file, and roll down the end of the source file with SymGetSymNext What I forgot to take into account are small things called inline functions.

CurrencyManager handles complex data binding and maintains bindings between a data source and all the list controls (for example, the DataGrid control) that bind to it or to one of its member tables The CurrencyManager class takes care of synchronizing the controls bound to the same data source and provides a uniform interface for clients to access the current item for the list Both manager classes have a property named Current and fire position-related events such as ItemChanged The Current property returns the currently selected item, whatever that is for the particular binding class For example, for the DataGrid class, the current item is the nth bound element that is, a DataRow object if a DataTable is bound, or a string if an array of strings is bound.

Those functions and source lines can occur in the middle of a function, so the source line information is really stored in ranges This meant that I had to come up with a scheme to keep track of all the ranges so that I could condense the source and line information Once I got over that hurdle, the program was pretty easy to develop The only other thing that got me had nothing to do with symbol engines it was the Standard Template Library (STL) I first started out implementing my data structures in STL and quickly found that even a partial implementation of PDB2MAPEXE was excruciatingly slow That was mostly my fault because I was using the vector class in a linear search way that was just plain stupid.

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vb.net itextsharp pdfreader

How to Convert PDF to Text in . NET ( VB ) | Square PDF . NET
How to extract plain text from PDF file using PDFBox. ... NET is a . NET port of PDFBBox created using IKVM. NET . The latest version (1.8.9) ... Sample code ( VB ):

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NET PDF Text Extractor & Converter - Extract Text from PDF C#/ VB ...
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