add and remove mapped folders
Some commonly used folders in SharePoint, such as Images and Layouts, are deeply embedded in the file hierarchy. You can map these folders into a SharePoint project to access them more easily. Mapped folders are folders in the SharePoint project that correspond to the physical location of the files in the installation of SharePoint Server.
When you deploy a SharePoint application, the contents of the mapped folder and all its subfolders are copied by the solution package (.wsp) onto the server that's running SharePoint at the specified location in the SharePoint folder tree. This location is determined by the Deployment Location property that's set for the mapped folder. Any subfolders in the mapped folder are relative to Deployment Location of the mapped folder. Note that the Deployment Location property, not the name of the mapped folder, determines where items are deployed. You can add mapped folders to a project by using commands on the menu bar or the shortcut menu for the project. You can use the Add SharePoint "Images" Mapped Folder and Add SharePoint "Layouts" folder commands to add those mapped folders that are used most often. You can map any of the other available SharePoint folders to your project by using the Add SharePoint Mapped Folder command on the shortcut menu and then specifying the folders in the Add SharePoint Mapped Folder dialog box.
Add mapped folders to a project
The following procedure describes how to add two mapped folders to a visual web part project. To start, you create a visual web part project.
To add mapped folders to a project
On the menu bar, choose File > New > Project.
On the Create a New Project dialog select the SharePoint Visual Web Part* for the particular version of SharePoint you have installed. For example, if you have SharePoint 2019 install select the SharePoint 2019 Visual Web Part template.
Note
You can also search for templates by typing SharePoint in the Search text box at the top of the Create a New Project dialog. You can also filter the list of templates to show only the templates for Office and SharePoint by selecting "Office" in the Project type drop-down box. For more information, see Create a new project in Visual Studio.
In the Name box, enter TestProject1
Then choose the Create button.
In the SharePoint Customization Wizard, choose the Finish button to retain the default settings.
In Solution Explorer, choose the project node, and then, on the menu bar, choose Project > Add SharePoint "Images" Mapped Folder.
A folder that's named Images appears in your project and contains a subfolder that's named TestProject1. This mapped folder will contain images for the visual web part project.
In Solution Explorer, choose the project node, and then, on the menu bar, choose Project > Add SharePoint Mapped Folder to display the Add SharePoint Mapped Folder dialog box.
In the tree view of folders that are available for mapping, choose the Resources folder, and then choose the OK button.
A folder that's named Resources appears in your project. This folder can store items such as string resource files. Sub-folders can be useful for organizing the contents of a mapped folder, but they're not automatically created when you add a mapped folder by using the Add SharePoint Mapped Folder command. To add a sub-folder, choose the Resources folder, and then, on the menu bar, choose Project > New Folder.
Change the deployment location of a mapped folder
By default, mapped folders are added to specific locations relative to the SharePoint root installation path, which the token <SharePointRoot> denotes. However, you can change this location by changing the Deployment location property of the mapped folder. Each mapped folder has its own Deployment location property.
To change the deployment location of a mapped folder
In the project that you created earlier, choose a mapped folder.
In the Properties window, choose the ellipsis (
) button on the Deployment location property.In the Add SharePoint Mapped Folder dialog box, browse to the folder to which you want the mapped folder to point.
Choose the node, and then choose the OK button.
Rename or remove mapped folders
To rename or remove a mapped folder
In the project that you created earlier, choose a mapped folder.
To rename the mapped folder, open its shortcut menu, choose Rename, enter the new name, and then choose the Enter key.
As an alternative, you can choose the mapped folder that you want to rename, open the Properties window, and then set the value of the Folder name property to the new name.
To remove a mapped folder from the project, open its shortcut menu, choose Delete, and then choose the OK button in the dialog box to confirm the removal.