c# .net core barcode generator

c# .net core barcode generator

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If your application is targeted for use inside an organization in which users have existing user accounts within a local user database or Active Directory repository, then you should authenticate users with Windows authentication. You can configure Windows authentication in two ways: within IIS and within your ASP.NET application. To provide stronger security, you should configure your site to use both techniques. When a website requires Windows authentication, the application rejects any request that does not include a valid user name and password in the request header. The user s browser then prompts the user for a user name and password. Because the browser prompts the user for credentials, you do not have to have pages to request the user s user name and password. Some browsers, such as Windows Internet Explorer, automatically provide the user s current user name and password when the server is located on the intranet. This seamlessly authenticates the user, eliminating the need to retype the password for intranet site visits. With that said, most public websites use forms-based authentication; Windows authentication is primarily useful for intranet sites in an Active Directory domain environment. To configure an ASP.NET application for Windows authentication, edit the <authentication> section of the Web.config file. This section, like most sections related to ASP.NET application configuration, must be defined within the <system.web> section. The <system.web> section, in turn, must exist within the <configuration> section. This example shows the <authentication> section of the Web.config file configured to use Windows authentication.

This can quickly eat up resources on a Web server and cause scalability problems As Web sites evolved from mere conveniences to large mission-critical e-commerce organizations, it became apparent that a solution that addressed problems with CGI was needed..

<configuration> <system.web> <authentication mode="Windows" /> <authorization> <deny users=" " /> </authorization> </system.web> </configuration>

To make all locations on the corporate intranet reachable, the following static route is created:

The <authorization> section simply requires all users to be successfully authenticated. Specifying <deny users= /> within <authorization> requires users to be authenticated, whereas specifying <allow users= * /> within <authorization> bypasses authentication entirely. The question mark ( ) represents unauthenticated users, and the asterisk (*) represents all users, both authenticated and unauthenticated. You can also configure Windows authentication in your application s Web.config file by following these steps, which are more user friendly:

1. 2. 3. 4.

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Destination: 172.16.0.0 Network Mask: 255.240.0.0 Metric: 1

Create an ASP.NET website by using Visual Studio. From the Website menu, select ASP.NET Configuration. Click the Security tab, and then click Select Authentication Type. Under How Will Your Users Access The Site, select From A Local Network, and then click Done.

Figure 6-9 shows the test page after it has been submitted, with the validator fired, displaying an asterisk (*).

1 . Which control is required when you are defining a master page 2. Which control is required when you are implementing a content page

1 . You must have at least one ContentPlaceHolder control defined per master page. 2. You place Content controls on content pages. One Content control is added to

To make all locations on Contoso, LTD. branch offices reachable, the following static route is created:

You can leverage master pages to define application-specific settings on which content pages depend. For example, if many content pages need a user s login ID, you can set this value inside the master page and then make it available to content pages as a property of the master page. This saves you from having to look the value up or track it on all pages or in the session state. The basic process to reference master page properties from a content page is as follows:

1. 2. 3.

Figure 6-9 : The test page for RequiredTextBox after the page is submitted with a blank field The validation that has taken place in Figure 6-9 is on the client Add a ClientTarget=Downlevel attribute/value pair to the @ Page directive and each click of the submit button will require a round-trip to the server Note There are a couple of other ways to disable client-side validation (without dumbing down the rendering of the entire page) First, you can set the Click event of a submit button to Page_ValidationActive=false; This technique is useful if, for example, you provide a cancel button on a form and want to allow the form to be cancelled without firing the client -side validation Another, perhaps better, alternative is to set the CausesValidation attribute of an <asp:Button> to false.

Destination: 192.168.0.0 Network mask: 255.255.0.0 Metric: 1 Dial-Out Credentials User Name: VPN_Chicago Domain: contoso.example.com Password: U9!j5dP(%q1 Confirm Password: U9!j5dP(%q1

Create a public property in the master page code-behind file. Add the @ MasterType declaration to the ASPX content page. Reference the master page property from the content page by using the syntax Master.<Property_Name>.

The sections that follow describe this process in more detail. You can follow a similar process if you need to expose master page methods or reference properties of control values on the master page. In this way, you can map a property to a control s value.

trive to minimize the dependencies between master and content pages. The fewer references you create between master and content pages, the fewer problems

Once the demand-dial interface is created, one change needs to be made. For the properties of the demand-dial interface, on the Options tab, under Connection Type, Persistent Connection must be selected.