Sitecore 8.2自定义WFFM字段遇难题：找不到Sitecore.WFFM.MVC程序集

Hey there, I’ve worked through similar WFFM setup headaches with Sitecore 8.2 before—let’s break down how to get this sorted for you:

1. First: Confirm Web Forms for Marketers (WFFM) is Installed #

Sitecore 8.2 does not include WFFM by default—it’s a separate module you need to install manually. If you skipped this step, that’s almost certainly why you can’t locate the assemblies:

• Download the WFFM module version that exactly matches your Sitecore 8.2 update (e.g., if you’re on Sitecore 8.2 Update 5, grab the WFFM 8.2 Update 5 package).
• Run the Sitecore Installation Wizard to install the module. This will automatically add all required WFFM assemblies to your site’s bin folder.

2. Locate the Correct Assemblies #

Once WFFM is installed, you’ll find these critical files in your Sitecore website’s bin directory:

• Sitecore.Forms.Mvc.dll: This is where the Sitecore.Forms.Mvc.Models.Fields.SingleLineTextField class lives (the exact one you’re missing).
• Sitecore.WFFM.Mvc.dll: The assembly your tutorial references—this is also added during the WFFM installation process.

3. Add References to Your Visual Studio Project #

To resolve the missing class error in your code:

• Right-click your project in Visual Studio → Add Reference.
• Browse to your Sitecore website’s bin folder, select Sitecore.Forms.Mvc.dll and Sitecore.WFFM.Mvc.dll, then click OK.
• Double-check that the reference’s Copy Local property is set to False—these assemblies should stay in the Sitecore bin folder, not be copied to your project’s output.

4. Verify Version Compatibility #

Mismatched versions between Sitecore and WFFM can cause missing assemblies or classes:

• Ensure your WFFM module version is fully compatible with your Sitecore 8.2 update. You can cross-check this using the release notes included with your Sitecore download.
• If you installed the wrong WFFM version, uninstall it via the Sitecore Installation Wizard and reinstall the correct matching version.

Quick Troubleshooting Tip #

If you still can’t find the assemblies after installation:

• Check the App_Config/Include/Forms folder—you should see WFFM-related config files there. If not, the installation didn’t complete successfully.
• Restart your Sitecore instance and clear the Sitecore cache to ensure the new assemblies are loaded properly.

内容的提问来源于stack exchange，提问作者Matthew