Displaying a PDF File in a VB.NET Form

Displaying a PDF File in a VB.NET Form PDF files have an internal document format that requires a software object that understands the format. Since many of you might have used the functions of Office in your VB code, lets look briefly at Microsoft Word as an example of processing a formatted document to make sure we understand the concept. If you want to work with a Word document, you have to add a Reference to the Microsoft Word 12.0 Object Library (for Word 2007) and then instantiate the Word Application object in your code. Dim myWord As Microsoft.Office.Interop.Word.ApplicationClass Start Word and open the document. myWord CreateObject(Word.Application) myWord.Visible True myWord.Documents.Open(C:\myWordDocument.docx) ( must be replaced with the actual path to the document to make this code work on your PC.) Microsoft uses the Word Object Library to provide other methods and properties for your use. Read the article COM -.NET Interoperability in Visual Basic to understand more about Office COM interop. But PDF files arent a Microsoft technology. PDF - Portable Document Format - is a file format created by Adobe Systems for document exchange. For years, it was totally proprietary and you had to get software that could process a PDF file from Adobe. On July 1, 2008, PDF was finalized as a published international standard. Now, anyone is permitted to create applications that can read and write PDF files without having to pay royalties to Adobe Systems. If you plan on selling your software, you still may be required to get a license, but Adobe provides them royalty-free. (Microsoft created a different format called XPS that is based on XML. Adobes PDF format is based on Postscript. XPS became a published international standard on June 16, 2009.) The Uses of PDF Since the PDF format is a competitor to Microsofts technology, they dont provide a lot of support and you have to get a software object that understands the PDF format from someone other than Microsoft right now. Adobe returns the favor. They dont support Microsoft technology all that well either. Quoting from the latest (October 2009) Adobe Acrobat 9.1 documentation, There is currently no support for the development of plug-ins using managed languages such as C# or VB.NET. (A plug-in is an on-demand software component. Adobes plug-in is used to display PDFs in a browser.) Since PDF is a standard, several companies have developed software for sale that you can add to your project that will do the job, including Adobe. There are also a number of open-source systems available. You could also use the Word (or Visio) object libraries to read and write PDF files but using these large systems for just this one thing will require extra programming, also has license issues, and will make your program bigger than it has to be. Just as you need to buy Office before you can take advantage of Word, you also have to buy the full version of Acrobat before you can take advantage of more than just the Reader. You would use the full Acrobat product in about the same way that other object libraries, like Word 2007 above, are used. I dont happen to have the full Acrobat product installed so I couldnt provide any tested examples here. How To But if you only need to display PDF files in your program, Adobe provides an ActiveX COM control that you can add to the VB.NET Toolbox. It will do the job for free. Its the same one you probably use to display PDF files anyway: the free Adobe Acrobat PDF Reader. To use the Reader control, first make sure that you have downloaded and installed the free Acrobat Reader from Adobe. Step 2 is to add the control to the VB.NET Toolbox. Open VB.NET and start a standard Windows application. (Microsofts next generation of presentation, WPF, doesnt work with this control yet. Sorry!) To do that, right-click on any tab (such as Common Controls) and select Choose Items ... from the context menu that pops up. Select the COM Components tab and click the checkbox beside Adobe PDF Reader and click OK. You should be able to scroll down to the Controls tab in the Toolbox and see the Adobe PDF Reader there. Now just drag the control to your Windows Form in the design window and size it appropriately. For this quick example, Im not going to add any other logic, but the control has lots of flexibility that Ill tell you how to find out about later. For this example, Im just going to load a simple PDF that I created in Word 2007. To do that, add this code to the form Load event procedure: Console.WriteLine(AxAcroPDF1.LoadFile( _   Ã‚  Ã‚  C:\Users\Temp\SamplePDF.pdf)) Substitute the path and file name of a PDF file on your own computer to run this code. I displayed the result of the call in the Output windows only to show how that works. Heres the result: Click Here to display the illustrationClick the Back button on your browser to return If you want to control the Reader, there are methods and properties for that in the control too. But the good folks at Adobe have done a better job than I could. Download the Adobe Acrobat SDK from their developer center (adobe.com/devnet/acrobat/). The AcrobatActiveXVB program in the VBSamples directory of the SDK shows you how to navigate in a document, get the version numbers of the Adobe software you are using, and much more. If you dont have the full Acrobat system installed - which must be purchased from Adobe - you wont be able to run other examples.

Scientific Investigation Lab Report Example | Topics and Well Written Essays - 500 words

Scientific Investigation - Lab Report Example The steps in the entire experiment protocol include (1) GFP gene construction; (2) gene shuffling and selection; (3) mutant selection; (4) mutant characterization in E. coli; (5) CH) cell expression of GFP; (6) FACS analysis; and, (7) fluorescence spectroscopy. That is, the researchers first synthesized a GFP (green fluorescent protein) gene in an E. coli construct with optimized codon usage. This was further improved using an evolutionary process of recursive cycles of DNA shuffling of the GFP gene, combined with visual selection for the brightest E. Coli colonies. Since red-shifting the excitation maximum makes detection challenging by the naked eye, UV light was used for visual screening. The independent variable in this study is the process used to improve cell fluorescence or GFP in E. coli cells. In particular, the independent variable considered the absence of GFP, the Clontech GFP, the wildtype GFP, the cycle 2 mutant GFP, and the cycle 3 mutant GFP. On the other hand, the dependent variables that were investigated for differences in this study are the fluorescence signals and excitation signals of the E. coli genes. Technically, the control group for this study is the sample with no GFP. However, the three constructs (i.e., wildtype, cycle-2 and cycle-3) were also compared against the pGFP plasmid from Clontech, with a GFP sequence reported by Chalfie et al and contains a Q80R mutation which occurred as a PCR error as well as 24 extra amino acids from the N-terminus of LacZ. Results of the research study confirms the initial hypothesis that the combination of DNA shuffling and high throughput screening would be a powerful tool in optimizing a significant number of commercially important enzymes for which selections do not

E- Commerce Essay Example | Topics and Well Written Essays - 2000 words

E- Commerce - Essay Example Many people call this as the knowledge revolution, characterized by an international data highway that works 24 hours a day, seven days a week. It has been far too long since people have acknowledged that the wired or networked world is revolutionizing business. This phenomenon has paved the way for organizations to better communicate with their market and all the stakeholders involved in the production and selling of goods and services. In a nutshell, companies use technology and electronic mediation not just to reach out to its consumers and suppliers but also to automate back-office tasks and industrial operations while pushing ahead with research and development. eCommerce eCommerce or eBusiness is the most prominent consequence of electronic mediation in business. Here, individuals and organizations can sell and/or purchase goods and services through the Internet. The standard definition for eCommerce has been put forward by the US Census Bureau , which defined eCommerce as â₠¬Å"any transaction completed over a computer-mediated network that involves the transfer of ownership or rights to use goods or services.† (Storz 2007, p. 126) The Internet, however, is not the only channel by which eCommerce can operate. For instance, transactions can be made through different communication and technological channels such as the phone. Nonetheless, the Internet dominates the electronic commerce today. It was created thanks to the personal computer (PC), telecommunications, business software, as well as the advances in office technology industries. (Shi, p. 25) What ecommerce did for companies is to tear down the traditional bricks and mortar business models and imposing its own brand that features increased performance, speed and cost efficiency. In addition, according to Kellerman (2002), â€Å"globalization is quite unique to eCommerce, permitting the creation of global market areas for many products and services,† and that its â€Å"attribute is â €Å"intelligence, whereby eCommerce is aided by sophisticated information tool, such as databases, search engine and the like.† (p. 128) There are fundamentally two classifications by which eCommerce operates: B2B eCommerce and B2C eCommerce. The transactions that are electronically mediated between enterprises are called business-to-business (B2B) eCommerce, while electronically selling goods and services by a company to its consumers is called as business-to-consumer (B2C) eCommerce. Together they manifest the best possible benefits that a company could reap out of communication and technology. Business to Business With regards to the organization, electronic mediation poses several benefits and opportunities. The most important of these is cost efficiency, productivity and convenience. In the past, for instance, a company would follow the traditional method of procurement, which entails numerous work and human resource in order for products to be bought and sent to the buy er. The consumer would order through a thick and burdensome catalog and would be punished by having to browse each and every page that could rival the number of pages of the telephone directory. After, making the selection, he would then have to phone the selling party, be given several forms to fill, fax his information and proceed with the buy and sell process. This setup can be extremely be aggravated when products and serv

Personal Goal Essay Example for Free

Personal Goal Essay My purpose for seeking a Doctorate Degree in Educational Leadership is to expand my knowledge of theory and research methods as it pertains to education Being a seasoned professional in the field of education as a Master Teacher for fifteen years, and having been exposed to different challenges in teaching the learners and leading the school, I had this profound realization on the critical tasks of education in this age of globalization. The way schools are led and managed is changing. The types of school leaders and governing bodies that exist today are far more diverse than they once were; and they will continue to develop given the fast-paced movement of modern technology which affects how people and society evolve nowadays. Hence, this complexity calls for leaders with exemplary leadership style that are worth emulating for others so as to make a real distinction in the lives of many people, not only in a community, but for the country, as a whole. Educational leadership and management as a field of inquiry play a significant role in the improvement of schools; leveraging learning outcomes; and enhancing instructional competence of students. In schools, high performance rating and high literacy rates among their clienteles connotes success in one’s governance in education, thus, in making relevance to the system, educational leaders need to exercise certain leadership models that are truly manifesting merit in order to achieve its goals. And I think I already have what it takes to become a leader who can have the knowledge and skills to make these goals a reality.

The Requiem Scene in Arthur Millers Death of a Salesman Essay

The Requiem Scene in Arthur Miller's Death of a Salesman The death of Willy Loman was remembered by few.   He was mourned not because of his tragic death but because of his despairing life.   The Requiem scene in Death of a Salesman describes the ill-attended funeral of Willy, the tragic hero who struggled to fulfill his vision of the American Dream.   This scene brings closure to the play because the audience realizes that only in death is Willy able to accept the failure and false success that has plagued him and his family for years.   Resolution is brought to conflicts between Willy and his own disillusionment, Willy and his hopes for his boys, and Willy and the betrayal of his wife,  Linda.   Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚  Ã‚     Willy rejected a life of opportunity and became a salesman because of the promise outlined by the American Dream.   However, because of his inability to grasp reality, his life results in a succession of lies that unwind themselves into devastating consequences.   Willy does not understand that life requires more than good looks and a likeable personality in order to be successful and it is this illusion that causes the lack of substance in his being.   In the Requiem Biff states, â€Å"†¦ the man didn’t know who he was.† (138)   Here, Biff recognizes that Willy... ...tly admits his failure in the chase for the American dream and confesses to the lies that have shaped his tragic life.   The scene also brings closure to disagreements between Willy and his children as Biff and Happy are finally allowed to decide their own destiny.   Lastly,   Linda is free from the weight of constantly trying to comfort Willy and though she is deeply sorry for Willy’s death, she is able to live in peace.   In some cases, such as Willy’s, resolve can only occur in death.  Ã‚  Ã‚   Work Cited Miller, Arthur. "Death of a Salesman" in Literature, Reading, Reacting, Writing, Compact Fourth Edition. Harcourt, Inc. 2000.

Jim Hawkins: A Young Pirate Essay

Stories about pirates are some of the interesting and clever stories to tell such as the Treasure Island. It is a classic story about a young pirate, written by Robert Louis Stevenson and published in 1883. It tells about the young boy, Jim Hawkins, who turned into a pirate with his crew searching for the treasure (â€Å"Treasure Island†). Robert Louis Stevenson was a famous Scottish author of travel and adventure books, but he also wrote fiction stories, essays and poems (â€Å"Robert Louis Stevenson†). He pursued engineering first followed by law; however his interest was never in either of those. He was fond of reading and travelled many places before he became a famous writer (â€Å"Treasure Island: About the Author†). The story about Treasure Island is narrated by Jim Hawkins. He tells the story based from his observations, feelings, perceptions, and on how he responds to the people and events around him. He became easily involved in the pirate game and treasure hunting since his family owned the Admiral Benbow inn. There stayed Billy Bones, the captain who has the map of the treasure that Captain Flint buried. Captain Flint is already dead however the men who worked for him are still alive and searching for his buried treasure (â€Å"Treasure Island: Character Profiles†). The first pirate that Jim met is Billy Bones who stayed at their inn. Bones is a ragged, scarred, and drunkard pirate who always sing a pirate song; but he was kind with Jim. He always asks Jim to look out for any seafaring men along the shore which Jim thought that the man only wants some company. However, it turned out that the man is eager to avoid the other seafaring men especially the ‘seafaring man with one leg’ (â€Å"Treasure Island†). One day, another pirate named Black Dog, a companion of Billy Bones, came to Jim and asked for the whereabouts of Billy Bones. Both pirates wrestle until Bones is greatly injured. However, a blind pirate named Pew came with horsemen to Bones and delivered the ‘black spot’. After Bones died, Jim snatched a key and an oilskin packet from Bones. He and his mother left immediately and went to the next village. The village people, however, are not willing to help them and the two hide under the bridge. The men continuously searched for the â€Å"Flint’s fist† but they could not find it. They escaped leaving Pew behind while the horses of the revenue officers from the village trampled him to death (Nelson). Jim and his mother stayed with Dr. Livesey and Squire Trelawney where the squire analyzed the packet that Jim got from Billy Bones. The squire said that it is the account book of the ‘black-hearted hound’. After studying the rest of the oilskin packet, they found a map of Captain John Flint’s Treasure Island. Trelawney became eager to find the treasure and planned the rest of the voyage including the finances. He secured on of the best ships in England, the Hispaniola, and hired several men including a one-legged ‘seafaring man’ named Long John Silver and a group of sailors. Jim unexpectedly became part of the instant adventure (Nelson). Long John Silver was very much liked by Jim and the squire because of his performance as the ship’s cook. At the beginning of their journey, he is friendly and helpful to the rest of the crew however he is as notorious as Captain Flint who is concerned only about the money he can get (â€Å"Treasure Island: Character Profiles†). Jim, while hiding in an apple barrel, accidentally overhears Silver, Israel Hand, and Dick talking about their plan of overtaking the ship once they get the treasure. After getting on land, Captain Smollet together with his men fought with Silver and the pirates. Jim and his group escaped together with Ben Gunn, one of the original members of Captain Flint’s crew who was abandoned in the Treasure Island three years ago. Jim together with his group is lead to Gunn’s secret cave where he relocated Captain Flint’s treasure. In spite of Silver’s plan, Jim, Trelawney, Dr. Livesey, Gunn and the rest of the group are able to retrieve the treasure and haul it to Hispaniola and return to England (â€Å"Treasure Island†). Treasure Island is an exciting book inspired by adventures of notorious pirates. During the early 1700s, thousands of pirates wander along different seas in the world who plundered ships and private vessels for coins and precious metals that were likely hidden in small islands. This perhaps is one of the sources of Stevenson’s pirate stories. However, most of the pirates began in their early twenties until they age fifty or so, some crippled, blind, or dead. Young pirates were also common, but there were no enough records to prove that teenagers became fierce pirates. Young pirates like Jim Hawkins is like a dream come true for kids who always dream of sailing and travelling and someday finding a treasure (â€Å"Treasure Island†). In the early 18th century, there was a story about a young boy who joined a group of buccaneers. The story was based from the records of Captain â€Å"Black Sam† Bellamy. In 1716, Captain Bellamy’s ship Marianne attacked Bonetta, a ship travelling from Antigua to Jamaica. Some of Bonetta’s crew joined the pirates. John King, a kid travelling with his mother, also wanted to join the group of buccaneers so bad that he even threatened to kill himself after the captain did not allow him. It was not clear why John wanted to become a pirate, but there were speculations that maybe he was with a harsh parent or he does not want to go wherever they are going. Later, a kind a charismatic Captain Bellamy allowed John King to join the band (Krystek). In connection with the story of John King, a treasure hunter named Barry Clifford searched for the remains of Captain Bellamy’s boat – Whydah that sunk along Cape Cod. He found a cannon, artifacts, and silver coins. The artifacts they found included a human leg bone, a stocking, and a shoe belonging to a tiny adult, as he said. However in 2006, after the bone was examined in The Center for Historical Archeology in Florida, they found out that the bone belonged to a child aged between eight and eleven years old. The tale of a John King, a little boy who turned into a young pirate indeed was true (Krystek). In the early chapter of Treasure Island, the story was established through the first person narrative of Jim Hawkins. Money is introduced as the major driving force of the characters’ actions. Through Jim’s narration of events, greed and corruption are even more highlighted. As the number of pirates looking for the map increases, it pushes Jim into learning more about the treasure and acquiring the map. The first six chapters slowly unravel Jim’s transformation. He is now not controlled by Billy Jones and the other pirates and he chooses to stand with his mother and save her. He is beginning to take part into the action happening and acted like a hero (Nelson). In the middle chapters, more terrible things happened which challenged how Jim would respond. Jim has witnessed several deaths including Billy Bones’ and Tom’s. However, his response to the death of Tom’s death is different from Billy Bones’. He cried at Bone’s but not to Tom’s death where he just sat in silence. Upon arriving at the island after all the terrible things that he witnessed, Jim found a friend and a father figure whom he has gained trust (Nelson). At the later chapter, Jim is able to develop both physical and moral strength after their triumph against the pirates. Jim is able to survive and gain enough guts to face Silver and his crew and help his crew. He has matured and does not act like a child in the middle of the events. Jim is a child and adult in deciding and justifying the things he did. He is now acting not just to save himself but also the rest of his crew after he stole and find a boat. He became the story’s hero but not because of luck and fortune. Also, Jim does not forget how to be adventurous and try things despite failure. He never gives up although he is now engaging to wrong choices, these are justifiable by the arbitrary death that could happen anytime (â€Å"Treasure Island: Character Profiles†). Throughout the story, Jim Hawkins character changed from a simple observer of the events around him into a character who became actively involved and became a certified pirate. Even though he is just a kid, he is able to help in uncovering the mutiny plan of Long John Silver and retrieve the treasure. He became a competent boy physically and beat Israel Hands. He has grown morally mature after choosing not to run away from Long John silver despite Dr. Livesey urging him to. Jim is a smart boy with courage and good heart. Anyone reading the book could easily identity himself with Jim. Stevenson created it in such a way the reader could put his own imaginations in place of Jim. Jim Hawkins is an open, predictable character who narrates the story by telling what he sees and observed, but is close in telling his own feelings and thoughts about the other characters (Nelson). The transformation in Jim’s character was evident when he delivered a speech to the pirates. He is able to survive and save himself against the fierce pirates by offering deals that an adult would usually do. His courage has developed from their journey, a courage that he does not have back to the inn. An interesting encounter between Jim and Long John Silver once proved Jim’s ability to stand up and fought for himself even though it is Silver, a notorious pirate, he is talking to (Nelson). Jim Hawkins justifies the thoughts and imagination of a teenager and later the beginning stage of maturity developed from the combination of different adversities. The story of Jim Hawkins and the Treasure Island is not as exciting as it is when summarized because there is no other of telling his story in such an engaging way except reading all the chapters. Works Cited Krystek, Lee. â€Å"The Littlest Pirate†. 2006. 5 May 2008. . Nelson, Britanny. â€Å"Gradesaver: Treasure Island – Study Guide – Character List†. 2008. 5 May 2008. . â€Å"Robert Louis Stevenson†. 2008. Jalic Inc. 5 May 2008. . â€Å"Treasure Island†. Bibliomania. com Ltd. 5 May 2008. . â€Å"Treasure Island†. 2008. Wiley Publishing. 5 May 2008. . â€Å"Treasure Island: About the Author†. 2008. Wiley Publishing. 5 May 2008. . â€Å"Treasure Island: Character Profiles†. 2008. Novelguide. 5 May 2008. .

Biology Prefixes and Suffixes -lysis

The suffix (-lysis) refers to decomposition, dissolution, destruction, loosening, breaking down, separation, or disintegration. Examples Analysis (ana-lysis): method of study involving the separation of material into its constituent parts. Autolysis (auto-lysis): the self-destruction of tissue typically due to the production of certain enzymes within cells. Bacteriolysis (bacterio-lysis): the destruction of bacterial cells. Biolysis (bio-lysis): the death of an organism or tissue by dissolution. Biolysis also refers to the decomposition of living material by microorganisms such as bacteria and fungi. Catalysis (cata-lysis): the action of a catalyst to accelerate a chemical reaction. Chemolysis (chemo-lysis): decomposition of organic substances through the use of chemical agents. Chromatolysis (chromat-o-lysis): the dissolution or destruction of chromatin. Cytolysis (cyto-lysis): the dissolution of cells by the destruction of the cell membrane. Dialysis (dia-lysis): the separation of smaller molecules from larger molecules in a solution by the selective diffusion of substances across a semi-permeable membrane. Dialysis is also a medical procedure done to separate metabolic waste, toxins and excess water from the blood. Electrodialysis (electro-dia-lysis): the dialysis of ions from one solution to another through the use of an electric current. Electrolysis (electro-lysis): method of destroying tissue, such as hair roots, by the use of an electrical current. It also refers to a chemical change, specifically decomposition, that is caused by an electric current. Fibrinolysis (fibrin-o-lysis): a natural occurring process involving the break down of fibrin in blood clots through enzyme activity. Fibrin is a protein that forms a network to trap red blood cells and platelets. Glycolysis (glyco-lysis): process in cellular respiration that results in the break down of sugar in the form of glucose for the harvesting of energy in the form of ATP. Hemolysis (hemo-lysis): destruction of red blood cells as a result of cell rupture. Heterolysis (hetero-lysis): the dissolution or destruction of cells from one species by the lytic agent from a different species. Histolysis (histo-lysis): the breakdown or destruction of tissues. Homolysis (homo-lysis): the dissolution of a molecule or cell into two equal parts, such as the formation of daughter cells in mitosis. Hydrolysis (hydro-lysis): the decomposition of compounds or biological polymers into smaller molecules by a chemical reaction with water. Paralysis (para-lysis): the loss of voluntary muscle movement, function, and sensation that causes the muscles to become loose or flaccid. Photolysis (photo-lysis): decomposition caused by light energy. Photolysis plays a crucial role in photosynthesis by splitting water to produce oxygen and high energy molecules which are used to synthesize sugar. Plasmolysis (plasmo-lysis): shrinkage that typically occurs in the cytoplasm of plant cells due to the flow of water outside of the cell by osmosis. Pyrolysis (pyro-lysis): the decomposition of chemical compounds due to exposure to high temperatures. Radiolysis (radio-lysis): the decomposition of chemical compounds due to exposure to radiation.