使用Visual Studio发布含MySql.Data.dll的UWP至微软应用商店报错

Hey there, I’ve run into this exact issue dozens of times when developers try to use the official MySql.Data.dll in UWP apps. Let’s break down what’s going on and get this sorted for you.

Why This Happens #

UWP apps operate in a tight security sandbox that blocks access to certain Win32 APIs not included in the official UWP API contract. The problem here is that the official MySql.Data.dll is built for .NET Framework, not UWP, so it calls restricted system APIs like:

• CreateFileW (from kernel32.dll)
• MapViewOfFile (from kernel32.dll)
• OpenFileMappingW (from kernel32.dll)
• AcquireCredentialsHandleW (from secur32.dll)

These calls trigger the store validation errors you’re seeing.

The Most Reliable Fix: Switch to MySqlConnector #

The easiest way to resolve this is to replace the official MySQL library with MySqlConnector—a community-maintained, .NET Standard-compatible client that’s fully optimized for UWP. Here’s how to make the switch:

1. Uninstall the MySql.Data NuGet package from your UWP project.
2. Install the MySqlConnector NuGet package (grab the latest stable version for best results).
3. Update your code’s using statements: swap using MySql.Data.MySqlClient; with using MySqlConnector;.
4. Test your app locally to confirm database connections and queries still work—most API calls are identical, so changes should be minimal.

This library is built to avoid restricted Win32 APIs entirely, so it’ll pass store validation without any extra work.

Alternative: Use a Web API Middle Tier (If You Can’t Switch Libraries) #

If you absolutely need to stick with MySql.Data.dll for some reason, you can move your database logic to a backend Web API (like ASP.NET Core). Your UWP app will then send HTTP requests to this API instead of connecting directly to MySQL. This way, the restricted API calls happen outside the UWP sandbox, so store validation won’t flag them.

Note: This adds extra development work (building and hosting the API), so it’s only recommended if switching libraries isn’t feasible.

Final Pre-Submission Checks #

After making changes:

• Run a local UWP debug session to ensure all database functionality works as expected.
• Create a new app package and run the Windows App Certification Kit (WACK) locally to pre-validate before submitting—this will catch any remaining API issues early.

内容的提问来源于stack exchange，提问作者Fabio C