The first argument will often be a solution file name 第一个参数通常是解决方案文件名。
Solution file name 方案文件名称
This example upgrades a solution file named " myproject . sln " in your default folder for visual studio solutions 此示例升级visual studio解决方案的默认文件夹中名为“ myproject . sln ”的解决方案文件。