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Developer technologies | Visual Studio | Debugging
A core feature of Visual Studio that allows developers to inspect, analyze, and troubleshoot code during execution.
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(92.8, 12%, 18%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EDL%3C/text%3E%3C/svg%3E)
It looks like you've just created a single standalone .cs file. VS needs a "project" to build.
Start again by using the File, New Project option and choose the Console App (C#).