Error Message

vbboyd · January 23rd, 2012, 08:32 PM

When doing the examples in your book on pages 284-287 I get the following message in my errors category:

Message 1 Validation (ASP.Net): Attribute 'DisplayDirection' is not a valid attribute of element 'Banner'. C:\Wrox Beginning ASP.NET4.0\Source\Chapter 07\MasterPages\Frontend.master 38 50 C:\...\Chapter 07\

Imar · January 27th, 2012, 08:46 AM

Hi there,

Did you define the enum in the App_Code folder and did you create a public property in the Code Behind of the User Control? And have you tried rebuilding the site (Ctrl+Shift+B) and / or reopening Visual Studio?

Imar

ClayWeblogistics · June 7th, 2012, 05:24 PM

I keep getting an error "CS0246: The type or namespace name 'BasePage' could not be found." This appears to come from a call to function the BasePage function in the BasePage.cs file in the App_Code Folder how do I inform Visual Studio Professional where the function is so that the referance can be found?

Thanks,
Clay

Imar · June 7th, 2012, 05:41 PM

Hi Clay,

Where did you save the BasePage file? In which folder? And can you post the code of the file that generates the error?

Imar

ClayWeblogistics · June 7th, 2012, 07:18 PM

This is one of the referances in Default.aspx.cs (the code behind file) this appearing in several different files.

Code:

public partial class _Default : BasePage
{
  protected void Page_Load(object sender, EventArgs e)
  {

  }
}

The function call (or whaterver that function call looking thing is) is in the /App_Code Folder/BasePage.cs since I did not create it I think it was put in automatically. That code is as follows:

Code:

namespace BegASPCS.App_Code
{
    public class BasePage : System.Web.UI.Page
    {
        private void Page_PreInit(object sender, EventArgs e)
        {
            HttpCookie preferredTheme = Request.Cookies.Get("PreferredTheme");
            if (preferredTheme != null)
            {
                Page.Theme = preferredTheme.Value;
            }
        }

        private void Page_PreRender(object sender, EventArgs e)
        {
            if(this.Title == "Untitled Page" || string.IsNullOrEmpty(this.Title))
            {
                throw new Exception("Page cannot be \"Untitled Page\" or an empty string");
            }
        }
         public BasePage()
        {
            this.PreRender += new EventHandler(Page_PreRender);
            this.PreInit += new EventHandler(Page_PreInit);
        }
    }
}

The function does some sort of page initializeation and appends values to the current objects that are referanced in the first function by the functions above the calling function. The C# files that use the function are unable to referance \App_Code\BasePage.cs.

Imar · June 8th, 2012, 09:43 AM

Quote:

since I did not create it I think it was put in automatically.

I doubt that; The BasePage does not exist in .NET by itself, and is added in an exercise in the book.

Quote:

namespace BegASPCS.App_Code
{

How did the namespace get there? It looks like you chose the wrong project type (that is, a Web Application Project and not a Web Site Project). If that's the case, many examples won't work as shown in the book (for example, because a WAP does not support the App_Code folder).

Can you confirm your ASPX pages have two code behind files, one with Designer in its name?

For now, you may get away with it by changing

: BasePage

to

: BegASPCS.App_Code.BasePage

in the code behind of your pages.

Quote:

The function does some sort of page initializeation and appends values to the current objects that are referanced in the first function by the functions above the calling function. The C# files that use the function are unable to referance \App_Code\BasePage.cs.

Not everything is a function in JavaScript. You may want to (re)read chapters 5 and 6 so you get a better understanding of the terminology and what this code does.

Cheers,

Imar

Imar

ClayWeblogistics · June 8th, 2012, 06:27 PM

Yesterday I was frusterated and I could see the code and it was not making the connection I saw the event handlers and it just was not connecting. I am going to try your suggestions and work it again.

Thanks for the help,
Clay

ClayWeblogistics · June 8th, 2012, 06:49 PM

It does have a designer page as well as a code behind page. Is that an indication that it is a Web Application Project versus a Web Site Project the controls in Visual Studio Professional looked a lot different than VWD. Would I be better off starting with a Web Site Project? and Deleting the Web Application Project?

Just wondering,
Clay

Imar · June 9th, 2012, 05:07 AM

Quote:

Is that an indication that it is a Web Application Project versus a Web Site Project

Yes, you've chosen a Web Application indeed. Take a look at Chapter 2, pages 34-35 and 37-38 in particular.

You can grab the source from the Wrox site and use the code from the chapter before the one you're currently working on as a starting point.

Quote:

the controls in Visual Studio Professional looked a lot different than VWD.

That shouldn't be the case; they should be the same. What kind of differences are you seeing?

Imar