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Authentication is the most basic concern. Any application that needs to use a database needs to authenticate its users against the database. There are a few different modes of authentication to choose from (we ll look at these in detail in the next section). Code access security is a security model introduced with the .NET Framework. Because all .NET code runs in a managed environment, system administrators can prevent parts of the code from accessing a particular resource (in this case, the Oracle database) by externally configuring the allowed permissions for a machine or user at the .NET Framework level. ODP.NET provides you classes that allow you to build applications that conform to this security model. Using code access security, you can ensure that only trusted code assemblies can gain access to the Oracle database. Security for data access, data storage, and data transmission can be configured at the database level. For example, to properly access data in the database, you need to ensure that the appropriate rights for each database object have been granted to the appropriate roles or users. When you store data in the Oracle database, you should also consider activating Transparent Data Encryption (TDE), a feature that allows you to apply encryption on your data at the database level without having to write a single line of code. Finally, when the database passes any data to your application over the network, you should also consider encrypting the data before it is transmitted over the network, by means of Secure Sockets Layer (SSL) or some other encryption method. The security stack for a typical ODP.NET application may look like Figure 11-1. add pages to pdf c# How to insert an empty page in a PDF file in C# - E-iceblue
Spire.PDF has a function of adding, removing the blank pages in C#. We have already shown you how to remove the blank page in a PDF file. This article will ... add pages to pdf c# Determine number of pages in a PDF file - Stack Overflow
You'll need a PDF API for C#. .... found a way at http://www.dotnetspider.com/resources/21866-Count-pages-PDF-file.aspx this does not require ... <table> <tr> <td>Name</td> <td><input type="text" size="35" maxlength="256" name="UserName"></td> </tr> <tr> <td>E-mail</td> <td><input type="text" size="35" maxlength="256" name="UserEmail"></td> </tr> </table> To retrieve the current value for either of these elements in your JavaScript command, you simply need to access the value property For example, UserNamevalue will contain the text that s currently entered in the user name text box Armed with this information, you can add an onClick attribute to the Submit Comments button that triggers the Feedback() method and passes the two important pieces of information Here s what it looks like: <input onClick="windowexternalFeedback(UserNamevalue, UserEmailvalue)" type="submit" value="Submit Comments"> Generally, this is the best approach However, you can also retrieve information from the page using the HtmlDocument model In this case, you need to check the value attribute, which will have the information you need once the page has been submitted. how to convert html to pdf using itextsharp in vb.net, vb.net barcode scanner tutorial, ssrs ean 13, winforms qr code, asp.net code 128 reader, data matrix barcode reader c# c# determine number of pages in pdf GhostscriptRasterizer.Open, Ghostscript.NET.Rasterizer C# (CSharp ...
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Feb 24, 2015 · Step C. Add a button to the default page named "Default.aspx" and change the text to "Generate PDF". Double-click on the button to generate an Onclick event (to generate the PDF) on the Form. Add the following 2 namespaces to the top of the ".cs" file: Here s an example that grabs the text from the comment box: Dim comments As String = webBrowser1DocumentAll("Comments")GetAttribute("value") Or to test if the Complaint radio button is selected, use the following: If webBrowser1DocumentGetElementById("Complaint")GetAttribute("checked") _ = "True" Then. def resize(width, height): glViewport(0, 0, width, height) glMatrixMode(GL_PROJECTION) glLoadIdentity() gluPerspective(60.0, float(width)/height, .1, 1000.) glMatrixMode(GL_MODELVIEW) glLoadIdentity() def init(): glEnable(GL_TEXTURE_2D) glClearColor(1, 1, 1, 1) def run(): pygame.init() screen = pygame.display.set_mode(SCREEN_SIZE, HWSURFACE|OPENGL|DOUBLEBUF) resize(*SCREEN_SIZE) init() # Load the textures texture_surface = pygame.image.load("sushitex.png") # Retrieve the texture data texture_data = pygame.image.tostring(texture_surface, 'RGB', True) # Generate a texture id texture_id = glGenTextures(1) # Tell OpenGL we will be using this texture id for texture operations glBindTexture(GL_TEXTURE_2D, texture_id) # Tell OpenGL how to scale images glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR ) glTexParameteri( GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR ) # Tell OpenGL that data is aligned to byte boundries glPixelStorei(GL_UNPACK_ALIGNMENT, 1) # Get the dimensions of the image width, height = texture_surface.get_rect().size In the following sections, we will take a look at the various security options that you can implement at the application level: authentication, code access security, and best practices to overcome common database vulnerabilities in your code. add pages to pdf c# Ghostscript: PDF total pages - Stack Overflow
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Pages of all documents in PDF collections are numbered ... does not reflect the page number in the original document. With a little craftiness and the WebBrowser.Navigating event, you can stop users from moving on if they haven t correctly filled out the form: Private Sub webBrowser1_Navigating(ByVal sender As System.Object, _ ByVal e As System.Windows.Forms.WebBrowserNavigatingEventArgs) _ Handles webBrowser1.Navigating If webBrowser1.Document.All("userName").GetAttribute("value") = _ String.Empty Then e.Cancel = True MessageBox.Show("Please enter your name.") End If End Sub In this chapter, you learned about the new WebBrowser control, which allows you to display Web pages and control navigation. On its own, the WebBrowser provides some useful features, but some of the most interesting possibilities arise when you use scripting and the HtmlDocument object model to fuse together the world of the Web with the managed world of .NET code. Using these features you can create small-scale solutions (like a start-up window that shows an animated company logo by displaying a Web page that uses Macromedia Flash) or more ambitious projects (like a next-generation help engine that allows users to read documentation and trigger application tasks). When embarking on building your application, it is always a good idea to decide on the mode of authentication for your application. The Oracle database supports three different modes of authentication: Standard username/password authentication Proxy authentication Windows authentication count pages in pdf without opening c# How to get number of pages of a PDF file in C# - E-iceblue
Enlarge PDF Margins without Changing Page Size ... Horizontally and Vertically Split a PDF Page into multiple Pages in C# ... By using the Document class, you can use Count property of the Pages Collection of Document object to get the ... get pdf page count c# Merge PDF files in C# .NET - Tallcomponents
May 3, 2014 · Merge multiple PDF files into one using C#. ... It creates a new document and then adds a clone of the pages from each input document. Please ... free ocr api for c#, .net core barcode reader, birt code 128, how to generate barcode in asp net core
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