C# 编译，将构建时间写入程序集（需要新项目结构）

来源:
https://stackoverflow.com/questions/1600962/displaying-the-build-date#

自定义特性

namespace SuperDuper
{
    [AttributeUsage(AttributeTargets.Assembly)]
    public class BuildDateTimeAttribute : Attribute
    {
        public DateTime Built { get; }
        public BuildDateTimeAttribute(string date)
        {
            this.Built = DateTime.Parse(date);
        }
    }
}

编辑.csproj文件

<ItemGroup>
    <AssemblyAttribute Include="SuperDuper.BuildDateTime">
        <_Parameter1>$([System.DateTime]::Now.ToString("s"))</_Parameter1>
    </AssemblyAttribute>
</ItemGroup>

获取

private static DateTime? getAssemblyBuildDateTime()
{
    var assembly = System.Reflection.Assembly.GetExecutingAssembly();
    var attr = Attribute.GetCustomAttribute(assembly, typeof(BuildDateTimeAttribute)) as BuildDateTimeAttribute;
    return attr?.Built;
}

上方可以添加自定义的特性，下面是一个简化的方式
编辑.csproj文件

  <ItemGroup>
    <AssemblyMetadata Include="BuildTime1" Value="$([System.DateTime]::UtcNow.ToString(yyyymmddhhmmss))" />
    <AssemblyMetadata Include="BuildTime2" Value="$([System.DateTime]::UtcNow.ToString(o))" />
  </ItemGroup>

获取

static void Main(string[] args)
{ 
    var assembly = System.Reflection.Assembly.GetExecutingAssembly();
    var attr = Attribute.GetCustomAttributes(assembly, typeof(AssemblyMetadataAttribute)).FirstOrDefault();

    Console.WriteLine(((AssemblyMetadataAttribute)attr)?.Value);

    Console.Read(  );
}