Customize Sitecore Image Field Property Dialog

Question

I want to give a custom image field's property dialog a class dropdown. Currently I have a custom image field which points to a custom image control.

That control overrides Sitecore.Shell.Applications.ContentEditor.Image's ShowProperties method. The only line that I have really changed in that method is the line that has a namespace reference.

I have overriden it to point to a custom class that inherits from Sitecore.Shell.Applications.Media.ImageProperties.ImagePropertiesPage.

I'm getting the following error indicating that my class cannot be found:

Xaml control "MyNamespace.CustomSitecore.Shell.Applications.Media.BrandedImageProperties.BrandedImagePropertiesPage, MyNamespace.Common" not found. The last error was: [No error]

The line I have changed is as follows:

    UrlString urlString = new UrlString(FileUtil.MakePath("/sitecore/shell", 
        ControlManager.GetControlUrl(
            new ControlName(
                "MyNamespace.CustomSitecore.Shell.Applications.Media.BrandedImageProperties.BrandedImagePropertiesPage"))
        )
    );

I'm assuming that's because it looks in Sitecore.Client. Is there any way to change this so it will look through a dll I specify? Is this even the right way to do something like this (override 1 dialog on a field by creating a completely new field)?

Answer 1

You need to make sure that you have created your control and is present in the website/sitecore/shell or website/sitecore modules/.

Moreover, the namespace used in the code should match the one in the control, i.e, the xaml/xml file.