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I was able to do this on the server using ZXing. Net and exposing an endpoint via a controller(MVC or Web API). The endpoint would receive data via query string ...

Your template can include new elements, and you can recycle default components. To do the latter, you should use the same ID for the controls as in the default template. To simplify this operation, right-click on the control in the Visual Studio designer, choose Convert To Template, and switch to the Source view. The markup you see is the default template of the control expressed as ASP.NET code. Use it as a starting point for creating your own template.

You must define a delegate before you can use it. The following line declares a delegate named OneArgSub, which points to a procedure that takes a string argument:

The Login control fires the server events listed in Table 19-15.

In the declaration section of a module or a class Delegate Sub OneArgSub(ByVal msg As String)

TABLE 19-15

Now you re ready to add a report to your project. You still have the option to use the Report Wizard to help you set up a new report. However, in this section, you create a blank report without using the wizard. As you progress through this chapter, you ll add items to this report.

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QR - Code Web-Control For ASP . NET Developers
The QR - Code image generated by this website is a standard Windows ASP . NET WebControl component written in C#. This QRCodeControl can be used as part ...

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The preceding line doesn t declare a single delegate object. Rather, it defines a class of delegates. Behind the scenes, in fact, Visual Basic creates a new class named OneArgSub that inherits from the System.MulticastDelegate class. Once you have defined the OneArgSub delegate class, you can declare a variable of the new class:

Fires when a user is authenticated. Fires when the user logs in to the site after a successful authentication. Fires when a user submits login information but before the authentication takes place. At this time, the operation can still be canceled. Fires when a login error is detected.

In most common cases, though, you don t need to handle any of these events, nor will you likely find it necessary to programmatically access any of the numerous properties of the control. The most common use for the Login control is to use it as a single-control page to set up the user interface of the login page for use with Forms authentication. The control relies entirely on the membership API (and the selected provider) to execute standard operations, such as validating credentials, displaying error messages, and redirecting to the originally requested page in the case of a successful login. If you have a provider with custom capabilities that you want to be reflected by the Login control, you need to modify the layout to add new visual elements bound to a code-behind method. In the code-behind method, you invoke the custom method on the custom provider.

Now you re ready to create an instance of the OneArgSub delegate class:

The LoginName control is an extremely simple but useful server control. It works like a sort of label control and displays the user s name on a Web page:

deleg = New OneArgSub(AddressOf DisplayMsg)

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How to display a QR code in ASP . NET and WPF - Scott Hanselman
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