如何创建变量名称为'toString'类型的动态类？

Question

Thank you for reading my article.

I am using a UserControl of asp.net in company webpage. UserControl can not use inheritance class, because that already inherits System.Web.UI.UserControl class.

So I want to create a dynamic class with the name of the parent page.

Below is my code.

string userNo = string.Empty;
string virtualPath = Page.AppRelativeVirtualPath.ToString();
virtualPath = virtualPath.Substring(virtualPath.LastIndexOf("/") + 1);

//I want to use the generated class by referring to the variable name of "virtualPath" in the "here" text below.
//userNo = Uact.Framework.Common.Decryptor.Decrypt((("here!")Context.Handler).UserNo);

switch (virtualPath.ToUpper().Trim()){
    case "PROJECTSIGNWRITE.ASPX" :
        userNo = Uact.Framework.Common.Decryptor.
                    Decrypt(((ProjectSignWrite)Context.Handler).UserNo);
        break;

    case "PROJECTREPORTVIEW.ASPX" :
        userNo = Uact.Framework.Common.Decryptor.
                    Decrypt(((ProjectReportView)Context.Handler).UserNo);
        break;

    case "PROJECTCOMPLETE.ASPX" :
        userNo = Uact.Framework.Common.Decryptor.
                    Decrypt(((ProjectComplete)Context.Handler).UserNo);
        break;
}

Answer 1

Instead of using inheritance, use an interface.

Declare an interface with the property UserNo

public interface IHasUserNo
{
     string UserNo {get; set;}
}

Then have your classes like for example ProjectSignWrite implement this interface.

public class ProjectSignWrite : UserControl, IHasUserNo
{
    .....
}

You can then simply write:

userNo = Uact.Framework.Common.Decryptor.Decrypt(((IHasUserNo)Context.Handler).UserNo);