Visual Studio 2017按启动按钮/F5仅运行旧版本，需手动构建求助

Hey, I totally get how frustrating this is—waiting around to manually build every time before running eats up way too much time, especially when projects grow large. Let's get this sorted out with a few quick checks and tweaks:

1. Verify Your Solution's Build Configuration #

First, make sure your active configuration isn't skipping any projects:

• Right-click your solution in the Solution Explorer and select Properties
• Navigate to Configuration Properties -> Configuration
• For each project in your solution, confirm the Build checkbox is checked for your active configuration (usually Debug or Release, depending on what you're using)
• If any projects are unchecked, VS won't build them automatically when you hit F5

2. Adjust Visual Studio's Core Debugging Options #

VS has a key setting that controls whether it builds before launching—let's ensure it's enabled:

• Go to Tools -> Options
• Navigate to Projects and Solutions -> Build and Run
• Look for the dropdown labeled "On Run, when projects are out of date:"
• Set this to Always build (avoid "Never build" or "Prompt to build" if you want seamless runs)
• Check the box for "Run build in background" if you want builds to happen while you work, which can cut down on wait time later

3. Check Individual Project Build Settings #

Sometimes a single project's settings override solution-wide rules:

• Right-click the project that's not updating, select Properties
• Go to Build (in the left menu)
• Under the "General" section, ensure "Build on run" is enabled (labeling might vary slightly by project type, like .NET vs. C++)
• Double-check the output path is correct—if VS is looking for the executable in an old folder, it might run the wrong version even after building

4. Clean and Reset Your Solution (For Stubborn Cases) #

If the above steps don't work, cached build files might be causing conflicts:

• Go to Build -> Clean Solution to delete all old build outputs
• Delete the .vs folder in your solution directory (this holds VS's cached settings and intermediate files—VS will recreate it automatically)
• Restart Visual Studio, then try building and running again

I've dealt with this exact issue a handful of times, and these steps usually fix it. Let me know if you hit any snags with any of the steps!

内容的提问来源于stack exchange，提问作者Nightmare Games