Using design time license

Basically, you want to lock down every entry point so all public methods will have to validate that the user has the rights to do that operation, so that means they will all have to call into the licensing manager before doing anything else.

Potentially, you're going to have to do similar things with none public methods as well because. NET allows you to execute code using reflection. Posted Jan am Pete O'Hanlon. Thanks for your reply. Read and understood. How usually Design time licensing is implemented for. A simple class library.

I am not talking about User control or Component here. Add your solution here. OK Paste as. Treat my content as plain text, not as HTML. Existing Members Sign in to your account. This email is in use. Do you need your password? Submit your solution! When answering a question please: Read the question carefully. Paying a royalty may sound a little alarming, but the benefit to paying a royalty instead of a flat rate is that it allows you to use a design without purchasing it.

The goal is that the designer and company make money together. The partnership is ideal for companies that may need a lot of designs, but are unsure as to which will sell. Typically, royalties are paid out monthly or quarterly. The only additional fee might be if there is any design work involved.

If so, that design fee should be discussed before the start of any job. Most large online image libraries are royalty-free: Shutterstock , iStock , or Getty Images. Some companies offer various licenses depending on the image application and print run sizes. It is crucial to read the licensing information to make sure you are abiding by their rules. Some online sites offer both non-exclusive and exclusive designs: Design Pool and Patternbank.

These sites are also industry-specific sites. Design Pool caters to commercial and residential interiors, and Patternbank serves the apparel and fashion industries. As the print-on-demand industry grows, we expect to see more image libraries spring up to meet that demand. Many talented artists and designers license or sell their artwork, in which case you can own the copyrights. There are a few trade shows that allow you to connect with these designers, such as Print Source or Surtex. Create New Account.

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Submit Submit your request Sign in Sign up. Previous Next. Visual Studio has tried to add an event handler to a component that does not have a member variable in the designer. This is an internal error in the Visual Studio serializer. It indicates that the serializer has tried to name an object twice, which is not supported. If you see this error, please log an issue by using Report a Problem. Inherited controls are under the ownership of their inheriting class. Changes to the inherited control must be made in the class from which the control originates.

Thus, you cannot rename or destroy it. The designer tried to reference a class on a particular Toolbox tab, but the class does not exist. A third-party designer has asked Visual Studio to create an object with particular parameters in the constructor that does not exist. This is a generic wrapper for an error. The error string that accompanies this message will give more details about the error message and have a link to a more specific help topic.

To correct this error, address the error specified in the error message appended to this error. This is an error in the component you just loaded or placed on the form. It indicates that the component did not add itself to its container control whether that is another control or a form. The designer will continue to work, but there may be problems with the component at run time. To correct the error, contact the component vendor.

Or, if it is a component you created, call the IContainer. Add method in the component's constructor. This error can arise because of two scenarios. Either a third-party component vendor has a problem with a control or component they have distributed, or the code you have written has recursive dependencies between components. To correct this error, ensure that your code does not have a recursive dependency.

If it is free of such problems, note the exact text of the error message and contact the component vendor. Please make sure that the assembly that contains this type is referenced. If this type is a part of your development project, make sure that the project has been successfully built. This error occurred because a reference was not found.

Make sure the type indicated in the error message is referenced, and that any assemblies that the type requires are also referenced. Often, the problem is that a control in the solution has not been built. To build, select Build Solution from the Build menu. Otherwise, if the control has already been built, add a reference manually from the right-click menu of the References or Dependencies folder in Solution Explorer.

Please make sure that the assembly containing this type is added to the project references. Visual Studio attempted to wire up an event-handling method and could not find one or more parameter types for the method.

This is usually caused by a missing reference. To correct this error, add the reference containing the type to the project and try again. The templates for inherited forms in Visual Studio are not available. Visual Studio has tried to create an event handler, but there is something wrong with the event type. This can happen if the event was created by a non-CLS-compliant language.

This error arises because a member variable has been declared twice for example, two controls named Button1 are declared in the code. Names must be unique across inherited forms. Additionally, names cannot differ only by case. Please look in the Task List for potential errors. This is a general error message for problems that arise during parsing.

These errors are often due to syntax errors. See the Task List for specific messages related to the error. You've tried to rename a component to an invalid value for that language.

To correct this error, name the component such that it complies with the naming rules for that language. When you define a class in multiple files by using the partial keyword, you can only have one partial definition in each file.