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I have an ASP . NET web app wherein I'm wanting to allow users to plug in a USB barcode reader and use. I.e. instead of typing a long number, ...
If you want to use this data in data binding to a GUI control such as a GridView control, you do it via the ObjectDataSource control. You can find this control on the Data tab of your Visual Studio Toolbox. Before placing it on the design surface, add a TextBox and a Button control. These will be used to pass parameters to the ObjectDataSource control at runtime. You ll see how to configure these using the ObjectDataSource wizard a little later. When you first place the ObjectDataSource control on the design surface, you ll see the control adorner, which gives you the option to configure the data source (see Figure 5-14). asp.net barcode reader free [Solved] QR Code Scanner in ASP . Net Web Application Using Smart ...
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Read and decode barcode in web page using C# programming language. In the preceding example, we used a console application to host our service. However, you can also use IIS to host WCF services. This way, your service is automatically started when IIS starts, and you get all the security features of IIS for your service. To begin, create a new WCF Service using Visual Studio. Because you will be hosting the service in IIS, make sure to create an HTTP-based website (see Figure 12-8). This way, an IIS application will be created for the newly created website. Remove the default web form from the site. You will notice that the website contains a file with extension .svc. This file essentially hosts the service inside IIS. Add a reference to EmployeeLibrary.dll so that it gets copied to the Bin folder of your website. Now modify the markup inside the .svc file as shown in Listing 12-8. Listing 12-8. Adding the ServiceHost Directive <%@ServiceHost Service="EmployeeLibrary.EmployeeService" %> asp.net scan barcode . NET Barcode Scanner Library API for . NET Barcode Reading and ...
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SaveAs(path); } // Now we try to read the barcode // Instantiate BarCodeReader object BarCodeReader reader = new BarCodeReader(path, BarCodeReadType. protected void doView( RenderRequest renderRequest, RenderResponse renderResponse) throws PortletException, IOException { renderResponse.setContentType("text/html"); Writer writer = renderResponse.getWriter(); String contents = renderRequest.getParameter("contents"); if (contents != null) { writer.write(contents); } else { //return the default contents writer.write("This is the default portlet contents. } writer.write("<p>"); writer.write( "<IMG SRC=" + renderResponse.encodeURL( renderRequest.getContextPath() + "/images/picture.jpg") + ">"); writer.write("<p>"); writer.write( "<IMG SRC=http://www.greenninja.com/images/teton1-small.jpg>"); } To change "); writer.write("this message, edit the portlet's settings."); If you select the Configure Data Source link, you will be taken into the wizard that allows you to configure the data source for the ObjectDataSource control. As this project is using a table adapter for the address database, you ll see this as an option in your business objects. However, you won t see the web service unless you uncheck the Show only data components check box. Once you ve done this, you can select your web service (i.e., AddressData.Service). See Figure 5-15. Our doView() method also writes HTML to display two images in the content. The first image is loaded from the portlet application. Another web site (www.greenninja.com) serves the second image. Both of the pictures are static images. Figure 12-8. Creating an HTTP-based website The @ServiceHost directive indicates that the file is a WCF service host. The Service attribute specifies the fully qualified name of the service type. Now add a web.config file to the website and type in the markup shown in Listing 12-9. Listing 12-9. Configuring the Host < xml version="1.0" > <configuration> <system.serviceModel> <services> <service name="EmployeeLibrary.EmployeeService" behaviorConfiguration="EmployeeServiceBehavior"> <endpoint address="" binding="basicHttpBinding" contract="EmployeeLibrary.IEmployeeService"></endpoint> </service> </services> <behaviors> <serviceBehaviors> <behavior name="EmployeeServiceBehavior"> <serviceMetadata httpGetEnabled="True"/> <serviceDebug includeExceptionDetailInFaults="true"/> </behavior> </serviceBehaviors> </behaviors> </system.serviceModel> </configuration> The next step is to select the data method that this ObjectDataSource control is going to use. You can select, update, insert, or delete using this control, but in your case you re reading the response from a web service, so you use the Select tab and choose the GetAddress web method that was created earlier. You can see this in Figure 5-16. 2 Our portlet needs to display an image when it is in VIEW mode. It is easy to include an image in the portlet display if another machine serves the file it is just a normal <IMG> HTML tag: asp.net barcode reader .NET Barcode Reader SDK for .NET, C# , ASP . NET , VB.NET ...
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