C#学习笔记-添加编译参数到程序集自动更新程序编译时间

在.csproj中添加预编译事件

<Target Name="SetBuildDate" BeforeTargets="BeforeBuild">
    <PropertyGroup>
        <BuildDate>$([System.DateTime]::UtcNow.ToString("yyyy-MM-dd HH:mm:ss"))</BuildDate>
    </PropertyGroup>
    <ItemGroup>
        <AssemblyAttribute Include="System.Reflection.AssemblyMetadataAttribute">
            <_Parameter1>BuildDate</_Parameter1>
            <_Parameter2>$(BuildDate)</_Parameter2>
        </AssemblyAttribute>
    </ItemGroup>
</Target>

在代码中读取

using System.Reflection;

public static string GetBuildDate()
{
    var assembly = Assembly.GetExecutingAssembly();
    var attr = assembly.GetCustomAttributes<AssemblyMetadataAttribute>()
                       .FirstOrDefault(a => a.Key == "BuildDate");
    return attr?.Value ?? "未知";
}