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Hi all, When I open and read the pdf file everything looks fine, but whenever I try to read and parse that same pdf file all of a sudden there are a ... If you've ever had the opportunity to learn about compiler construction, particularly parsing, you probably walked away with two thoughts: parsing is extremely hard, and people who write compilers are different from the rest of us (Whether that's a good different or bad different, I'll let you decide) If the compiler writers go to tremendous trouble to report a warning, they are telling you something they obviously feel is quite important and is probably a bug When a client asks us to help with a bug, the first thing we do is verify with them that the code compiles with no warnings If it doesn't, I tell them that I'll be glad to help, but not until their code compiles cleanly Fortunately, Visual Studio NET generates projects with the appropriate warning levels by default, so you shouldn't have to set the warning levels manually. visual basic read pdf: C# 4.0: Convert pdf to byte [] and vice versa - Stack Overflow vb.net pdf read VB . NET PDF Text Extract Library: extract text content from PDF file in ...
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Greetings all, I am trying to add Adobe PDF Reader control to my project, once ... This control is added by choosing Items from "COM Components " in Visual .... VB . NET Tutorial 16 : Loading a PDF ( Adobe Acrobat) File in a VB. Writer.WriteStartElement("xml"); Writer.WriteAttributeString("xmlns", "s", null, "uuid:BDC6E3F0-6DA3-11d1-A2A3-00AA00C14882"); Writer.WriteAttributeString("xmlns", "dt", null, "uuid:C2F41010-65B3-11d1-A29F-00AA00C14882"); Writer.WriteAttributeString("xmlns", "rs", null, "urn:schemas-microsoft-com:rowset"); Writer.WriteAttributeString("xmlns", "z", null, "#RowsetSchema"); } Measure performance It is tempting to mix functionality (or other types of testing) in a performance test suite Concentrate performance tests on measuring performance Take advantage of performance tests The alternate side of the previous bullet is that performance tests are often useful in other testing situations Use automated performance tests in other automated test suites whenever possible (for instance, in the stress test suite) Anticipate bottlenecks Target performance tests on areas where latency can occur, such as file and print I/O, memory functions, network operations, or any other areas where unresponsive behavior can occur Use tools In conjunction with the preceding bullet, use tools that simulate network or I/O latency to determine the performance characteristics of the application under test in adverse situations. vb.net pdf print library: How to Print a PDF programmatically without the... | Adobe ... vb.net adobe pdf reader component How to convert PDF Byte Array into PDF document? - Laserfiche Answers
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PdfReader reader = new PdfReader(path); StringWriter output = new ... PhysicalApplicationPath + "files\\CrtoPDF. pdf "; ExportOptions ex = new ... NET projects, in the project Property Pages dialog box, Configuration Properties, Build property page, check the Treat Compiler Warnings As Errors check box, as shown in Figure 2-2 For C# projects in particular, treating warnings as errors will stop the build on all sorts of excellent problems such as CS0649 (Field 'field' is never assigned to, and will always have its default value 'value'), which indicates you have a class member that is uninitialized However, other messages, such as CS1573 (Parameter 'parameter' has no matching param tag in XML comment (but other parameters do)), might seem so annoying that you'll be tempted to turn off treating warnings as errors I strongly suggest you don't In the case of CS1573, you're using the phenomenal /DOC switch to generate the XML documentation for your assembly (Personally, I think it's a huge crime that Visual Basic . The next step is creating the schema. The following listing demonstrates a sample, but valid, XML schema for an ADO Recordset object with two fields, firstname and lastname: <s:Schema id="RowsetSchema"> <s:ElementType name="row" content="eltOnly"> <s:AttributeType name="firstname" rs:number="2" /> <s:AttributeType name="lastname" rs:number="3" /> <s:extends type="rs:rowbase" /> </s:ElementType> </s:Schema> As you can see, this syntax is based on the Microsoft XDR schema, an early subset of today's XML schema, shown here: public void WriteSchema(DataTable dt) { // Open the schema tag (XDR) Writer.WriteStartElement("s", "Schema", null); Writer.WriteAttributeString("id", "RowsetSchema"); Writer.WriteStartElement("s", "ElementType", null); Writer.WriteAttributeString("name", "row"); Writer.WriteAttributeString("content", "eltOnly"); // Write the column info based on the table passed int index=0; foreach(DataColumn dc in dt.Columns) { index ++; Writer.WriteStartElement("s", "AttributeType", null); Writer.WriteAttributeString("name", dc.ColumnName); Writer.WriteAttributeString("rs", "number", null, index.ToString()); Writer.WriteEndElement(); 144 Remember that resource utilization is important Response time and latency are both key indicators of performance, but don't forget to monitor the load on CPU, disk or network I/O, and memory during your performance tests For example, if you are testing a media player, in addition to responsiveness, you might want to monitor network I/O and CPU usage to ensure that the resource usage of the application does not cause adverse behaviors in other applications Use "clean machines" and don't Partition your performance testing between clean machines (new installations of the operating systems and application under test) and computer configurations based on customer profiles Clean machines are useful to generate consistent numbers, but those numbers can be misleading if performance is adversely affected by other applications, add-ins, or other extensions. NET and C++ don't support the /DOC switch and XML documentation) This is a perfect 35 // CS0183. } Writer.WriteStartElement("s", "extends", null); Writer.WriteAttributeString("type", "rs:rowbase"); // Close the schema tag(s) Writer.WriteEndElement(); Writer.WriteEndElement(); Writer.WriteEndElement(); } error because if you're using XML documentation, someone else on your team is probably going to be reading that documentation, and if you aren't documenting everything you assume with parameters, or anything else for that matter, you're doing everyone on your team a disservice One warning that's improperly treated as an error is CS1596: (XML documentation not updated during this incremental rebuild; use /incremental-to update XML documentation) Although creating the XML documentation is great, this error stops the build cold Because there's no way to turn off this error, the only workaround is to turn off incremental building in either debug or release Since fast compiles are nice, I turn off incremental building in the release build and produce only XML documentation in the release build That way I can still benefit from the fast turnaround compiles but get my XML documentation when I need it. Running performance tests on the clean machine will generate your best numbers, but running tests on a machine full of software will generate numbers closer to what your customers will see Avoid change Resist the urge to tweak (or overhaul) your performance tests The less the tests change, the more accurate the data will be over the long term Performance counters are often useful in identifying performance bottlenecks in the system Performance counters are granular measurements that reveal some performance aspect of the application or system, and they enable monitoring and analysis of these aspects All versions of the Windows operating system include a tool (Perfmonexe) for monitoring these performance counters, and Windows includes performance counters for many areas where bottlenecks exist, such as CPU, disk I/O, network I/O, memory statistics, and resource usage A sample view of a Perfmonexe counter. For Native Code, Treat Warnings as Errors Mostly Compared to managed code, native C++ not only lets you shoot yourself in the foot when it comes to compilation issues, but it also hands you the loaded gun and cocks it for good measure When you get a warning in C++ code, you're really being told that the compiler is taking a wild guess as to what you intended A warning such as C4244 ('conversion' conversion from 'type1' to 'type2', possible loss of data), which is always reported on conversions between signed and unsigned types, is an excellent example This is where the compiler has a fifty-fifty chance of reading your mind and picking what should happen with that upper bit In many cases, fixing the error is as trivial as applying a cast to a variable. The information exposed by the schema depends on the source table used. The XmlRecordsetWriter class can do its job starting from data contained in any of the following objects: DataSet, DataTable, and DataView. However, because the DataTable object is the ADO.NET object that more closely matches the ADO Recordset object, the overloaded methods that receive a DataSet or a DataView object simply pass the related DataTable object to the overloaded method that receives a DataTable object. As mentioned, the XML recordset is built using a particular table in the specified DataSet object or using the table for the specified DataView object. Processing Record Contents The serialized contents of an ADO Recordset object consist of a bunch of <z:row> nodes grouped below a parent <rs:data> node. The WriteContent method simply loops through the rows in the table and creates the <z:row> nodes, as shown in the following code. Next it loops over all the columns and adds an attribute for each data column found. public void WriteContent(DataTable dt) { // Write data Writer.WriteStartElement("rs", "data", null); foreach(DataRow row in dt.Rows) { Writer.WriteStartElement("z", "row", null); foreach(DataColumn dc in dt.Columns) Writer.WriteAttributeString(dc.ColumnName, row[dc.ColumnName].ToString()); Writer.WriteEndElement(); } Writer.WriteEndElement(); } The whole idea is to make the code as unambiguous as possible so that there is no guessing on the compiler's part Some of the warnings are fantastic for clarifying your code, such as C4101 ('identifier' : unreferenced local variable), which tells you that a local variable is never referenced Fixing the C4101 warning will make your code much more readable for code reviews and maintenance programmers, and no one will waste time wondering what that extra variable is for or where it's used Other warnings, such as C4700 (local variable 'name' used without having been initialized), tell you exactly where you've got a bug in your code For some of our clients, simply bumping the warning level up and fixing these warnings solved bugs they would otherwise have spent weeks trying to track down. is shown in Figure 11-3. vb.net read pdf file itextsharp Read a PDF Line by Line - iTextSharp - Stack Overflow
Nevermind, this was an oversight on my part. I realized the lines are separated by Chr(10). Chr(10) does not create a new line in textboxes, ... vb.net read pdf into byte array How to read pdf line by line and fetch the data in c# - C# Corner
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