ASP.net "BasePage" class ideas

Asked 2010-01-14T14:57:28.747

What cool functionality and methods do you add to your ASP.net BasePage : System.Web.UI.Page classes?

Examples

Here's something I use for authentication, and I'd like to hear your opinions on this:

protected override void OnPreInit(EventArgs e)
{
    base.OnPreInit(e);

    // Authentication code omitted... Essentially same as below.

    if (_RequiresAuthentication && !(IsAuthorized))
    {
        RespondForbidden("You do not have permissions to view this page.", UnauthorizedRedirect);
        return;
    }
}

// This function is overridden in each page subclass and fitted to each page's
// own authorization requirements.
// This also allows cascading authorization checks,
// e.g: User has permission to view page? No - base.IsAuthorized - Is user an admin?
protected virtual bool IsAuthorized
{
    get { return true; }
}

My BasePage class contains an instance of this class:

public class StatusCodeResponse {

    public StatusCodeResponse(HttpContext context) {
        this._context = context;
    }

    /// <summary>
    /// Responds with a specified status code, and if specified - transfers to a page.
    /// </summary>
    private void RespondStatusCode(HttpContext context, System.Net.HttpStatusCode status, string message, string transfer)
    {
        if (string.IsNullOrEmpty(transfer))
        {
            throw new HttpException((int)status, message);
        }

        context.Response.StatusCode = (int)status;
        context.Response.StatusDescription = message;
        context.Server.Transfer(transfer);
    }

    public void RespondForbidden(string message, string transfer)
    {
        RespondStatusCode(this._context, System.Net.HttpStatusCode.Forbidden, message, transfer);
    }

    // And a few more like these...

}

As a side note, this could be accomplished using extension methods for the HttpRes



        
            3 Answers
            
            
                
                    
                        
                            
                            
                        
                        5
                        
                            
                            
                        
                        
                    
                    
                        
                        
Session related stuff, some complex object in the BasePage that maps to a session, and expose it as a property.
Doing stuff like filling a crumble pad object.


But most important: do not make your basepage into some helper class. Don't add stuff like ParseId(), that's just ridiculous. 



Also, based on the first post: make stuff like IsAuthorized abstract. This way you don't create giant security holes if someone forgets that there is some virtual method.

                        
                        
                            answered 2010-01-14T15:07:10.593
                            
                        
                        
                            
                                
                                
                            
                        
                        
                            
                            
                            
                                
                                
                            
                            
                        
                    
                
            
            
            
                
                    
                        
                            
                            
                        
                        0
                        
                            
                            
                        
                        
                    
                    
                        
                        I inherit from System.Web.UI.Page when I need certain properties and every page. This is good for aweb application that implements a login. In the membership pages I use my own base class to get access to Properties like UserID, UserName etc. These properties wrap Session Variables

                        
                        
                            answered 2010-01-14T15:54:16.853
                            
                        
                        
                            
                                
                                
                            
                        
                        
                            
                            
                            
                                
                                
                            
                            
                        
                    
                
            
            
            
                
                    
                        
                            
                            
                        
                        0
                        
                            
                            
                        
                        
                    
                    
                        
                        Please refer  Getting page specific info in ASP.Net Base Page

public abstract string AppSettingsRolesName { get; }

List<string> authorizedRoles = new List<string>((ConfigurationManager.AppSettings[AppSettingsRolesName]).Split(','))
if (!authorizedRoles.Contains(userRole))
{
Response.Redirect("UnauthorizedPage.aspx");
}


In derived Page

public override string AppSettingsRolesName 
{
  get { return "LogsScreenRoles"; }
}


                        
                        
                            answered 2012-08-01T09:47:04.713
                            
                        
                        
                            
                                
                                
                            
                        
                        
                            
                            
                            
                                
                                
                            
                            
                        
                    
                
            
            
        

        
        
            Your Answer