环境变量 开发环境 dotnet C# 开发电脑
public static class Utils
{
    public static bool IsDev()
    {
        const string DEVELOPMENT_KEY = "DOTNETCORE_ENVIRONMENT";
        const string DEVELOPMENT_VALUE = "Development";
        return Environment.GetEnvironmentVariable(DEVELOPMENT_KEY)?.Equals(DEVELOPMENT_VALUE, StringComparison.OrdinalIgnoreCase) ?? false;
    }
}
const string DEVELOPMENT_KEY = "DOTNETCORE_ENVIRONMENT";
const string DEVELOPMENT_VALUE = "Development";
// 获取环境变量的值
string? environmentValue = Environment.GetEnvironmentVariable(DEVELOPMENT_KEY);
// 判断环境变量的值是否为 "Development"
bool isDevelopment = environmentValue?.Equals(DEVELOPMENT_VALUE, StringComparison.OrdinalIgnoreCase) ?? false;