URL picker dialog box (SharePoint development in Visual Studio)
Applies to: 
Visual Studio 
Visual Studio for Mac
Note
This article applies to Visual Studio 2017. If you're looking for the latest Visual Studio documentation, see Visual Studio documentation. We recommend upgrading to the latest version of Visual Studio. Download it here
In the URL picker dialog box, you can choose files such as master page files or image files that are located in your project or on the local server that's running SharePoint.
This dialog box appears when you have the option to choose a file to set a property. You can open this dialog box by choosing the ellipsis button (
) next to various properties in the Properties window. The ellipsis button also appears as an IntelliSense prompt when you assign values to certain attributes in the Source view of the designer.
UIElement list
Project folders Displays a list of the folders defined in the project or on the local server that's running SharePoint. Choose the expansion button to display subfolders.
Expand the Project node to choose files in your project. To appear as selectable in the dialog box, files in your project must meet the following criteria:
The file must be contained in a mapped folder.
The file must be added to the solution package.
The file cannot be located in another project.
If you want to reference files that do not meet these criteria, you have to enter the path of the file manually.
Expand the Server node to choose files that are located on the local server that's running SharePoint. To appear as selectable in the dialog box, these files must meet the following criteria:
The file must be located in one of the following mapped folders: Images, Layouts, or ControlTemplates.
The file cannot be located in the SharePoint content database.
If you want to reference files that do not meet these criteria, you have to enter the path of the file manually.
Contents of folder Displays a list of files in the selected folder. Choose a file, and then choose the OK button to close the dialog box and send your selection to the process that called it.
Files of type Allows you to choose from a list of files that are appropriate for the task you are performing.