Use and customize of host of forms of Visual Studio 2005 in your applications .net [30 mn of reading - published 6/6/2006 8:37:04 PM - Target : Confirmé]

Author

William GUIOUBLY Student-Engineer Supinfo Paris SUPINFO graduate year  2007    Write to the person    All projects of the same author    Mini-CV of the author

5 The INameCreationService service

The INameCreationService service is an interface of the namespace System.ComponentModel.Design.Serialization. It provides methods to create a single name for the controls (To consult the MSDN to know all its methods, properties and events). One recovers this service via the GetService method of the DesignSurface class, while passing the System.ComponentModel.Design.Serialization.INameCreationService type in parameter. 

Let us examine somebody of these methods, properties and events:

- The CreateName method which permit to create a single name for the component of the originator.

- The IsValidName method indicates if not is single.

- The ValidateName method indicates if not is single, if it is not the case raises a exception.

There is no INameCreationService service by default in DesignSurface. We thus will create one of them to create a new NameCreationService class of it in our project which inherits System.ComponentModel.Design.Serialization.INameCreationService  as follows:

class NameCreationService : System.ComponentModel.Design.Serialization. INameCreationService {     // Creation of a unique name for the control     public string CreateName(System.ComponentModel.IContainer container, Type dataType)     {         int i = 0;         string name = dataType.Name;           while (true)         {             i++;             // It is checked if the name is not used             if (container.Components[name + i.ToString()] == null)                 break;         }           return name + i.ToString();     }       // Example drawn from the MSDN     // If the name of the control contains a caracter different from miniature, of a masjucule, of a number return false     public bool IsValidName(string name)     {         for (int i = 0; i < name.Length; i++)         {             char ch = name[i];             UnicodeCategory uc = Char.GetUnicodeCategory(ch);             switch (uc)             {                 case UnicodeCategory.UppercaseLetter:                 case UnicodeCategory.LowercaseLetter:                 case UnicodeCategory.DecimalDigitNumber:                     break;                 default:                     return false;             }         }         return true;         }       // Example drawn from the MSDN     // If the name of the control contains a caracter different from miniature, of a masjucule, of a number throw a exception     public bool ValidateName(string name)     {         for (int i = 0; i < name.Length; i++)         {             char ch = name[i];             UnicodeCategory uc = Char.GetUnicodeCategory(ch);             switch (uc)             {                 case UnicodeCategory.UppercaseLetter:                 case UnicodeCategory.LowercaseLetter:                 case UnicodeCategory.DecimalDigitNumber:                     break;                 default:                     throw new Exception("Le nom '" + name + "' n'est pas un identifiant valide.");             }         }       } }

Now one will associate our NameCreationService class to our originator by modifying the code of the Designer class: 

public class Designer : System.ComponentModel.Design.DesignSurface {     public Designer()     {         // Service of creation of name         ServiceContainer.AddService(         typeof(System.ComponentModel.Design.Serialization.         INameCreationService), new NameCreationService());     } }

 The ServiceContainer property of the DesignSurface class makes it possible to add and modify the list of the services associated with the originator.

To compile and launch the project and here what you obtain :

In the Name field of the propertyGrid, one can see that selected control has a single name well.