Question

我正在通过“NET2.0”一书读,并穿过这一样本代码,这些样本有申请组合说明:

static void Main(string[] args)
{
    Assembly assembly = Assembly.GetExecutingAssembly();
    object[] attributes = 
        assembly.GetCustomAttributes(typeof(AssemblyDescriptionAttribute), false);
    if (attributes.Length > 0)
    {
        AssemblyDescriptionAttribute descriptionAttribute =
            (AssemblyDescriptionAttribute)attributes[0];
        Console.WriteLine(descriptionAttribute.Description);
    }
    Console.ReadKey();
}

简单地了解集会描述,这有许多法典,我希望知道,这样做是否比较简单。 NET 3.5 + 采用LINQ或lambda表达方式?

Answer 1

确实有点。你们可以这样说:

 var descriptionAttribute = assembly
         .GetCustomAttributes(typeof(AssemblyDescriptionAttribute), false)
         .OfType<AssemblyDescriptionAttribute>()
         .FirstOrDefault();

 if (descriptionAttribute != null) 
     Console.WriteLine(descriptionAttribute.Description);

[EDIT将议会改为国际监管机构,参看Simon Svensson的答复]

如果你需要这样一部法典,则在ICustomAttribute上采用一种推广方法。提供人:

 public static T GetAttribute<T>(this ICustomAttributeProvider assembly, bool inherit = false) 
 where T : Attribute 
 {
     return assembly
         .GetCustomAttributes(typeof(T), inherit)
         .OfType<T>()
         .FirstOrDefault();
}

如Yuriy所解释的,自Net 4.5以来,框架中已有一种推广方法:

var descriptionAttribute = 
    assembly.GetCustomAttribute<AssemblyDescriptionAttribute>();

Answer 2

var attribute = Assembly.GetExecutingAssembly()
                    .GetCustomAttributes(typeof(AssemblyDescriptionAttribute), false)
                    .Cast<AssemblyDescriptionAttribute>().FirstOrDefault();
if (attribute != null)
{
    Console.WriteLine(attribute.Description);
}

Answer 3

我将使用一种延伸方法,用于。国际监管机构提供严格分类的,其中可重分类数字。唯一使用的是<代码>。 FirstOrDefault and OfType

public static void Main() {
    Assembly assembly = Assembly.GetExecutingAssembly();
    var descriptionAttribute = assembly
        .GetCustomAttributes<AssemblyDescriptionAttribute>(inherit: false)
        .FirstOrDefault();

    if (descriptionAttribute != null) {
        Console.WriteLine(descriptionAttribute.Description);
    }

    Console.ReadKey();
}

public static IEnumerable<T> GetCustomAttributes<T>(this ICustomAttributeProvider provider, bool inherit) where T : Attribute {
    return provider.GetCustomAttributes(typeof(T), inherit).OfType<T>();
}

Answer 4

在本案中,你不需要LINQ或lambda的表述。

自www.NET 4.5以来,你可以享受以下信息:https://learn.microsoft.com/en-us/dotnet/api/system.reflection.customattributeextensions.gettomattribute?view=netframework-4.5#System_Reflection_CustomAttributeExtensions_1_System_Reflection_Assembly_" rel=“nofollow noreer”>extension”>extensionet/。

var descriptionAttribute = assembly.GetCustomAttribute<AssemblyDescriptionAttribute>();

if (descriptionAttribute != null)
    Console.WriteLine(descriptionAttribute.Description);

Answer 5

在“@ab-kolan”答复之后,可以比较简单:

    var description = Assembly
            .GetExecutingAssembly()
            .GetCustomAttributes(typeof(AssemblyDescriptionAttribute), false)
            .OfType<AssemblyDescriptionAttribute>()
            .FirstOrDefault()?
            .Description ?? "";

Answer 6

如果你仅对目前的执行过程(相对于原来的员额的组装)感兴趣,那么它就是一个简单的一行。

Console.WriteLine(Process.GetCurrentProcess().MainModule.FileVersionInfo.Comments);

Answer 7

虽然这部法律已经较为简明,但您<>可。 • 利用略微的LINQ来清理它。

AssemblyDescriptionAttribute attribute = assembly
    .GetCustomAttributes(typeof(AssemblyDescriptionAttribute), false)
    .OfType<AssemblyDescriptionAttribute>()
    .SingleOrDefault();

if(attribute != null)
{
    Console.WriteLine(attribute.Description);
}

Answer 8

我愿这样做:

public static class AssemblyExtensions
{
    public static string GetDescription(this Assembly assembly)
    {
        var attribute = assembly.GetCustomAttributes(typeof (AssemblyDescriptionAttribute), false)
            .Select(a => a as AssemblyDescriptionAttribute).FirstOrDefault();

        if (attribute == null)
        {
            return String.Empty;
        }

        return attribute.Description;
    }
}

class Program
{
    static void Main(string[] args)
    {
        var assembly = Assembly.GetExecutingAssembly();
        Console.WriteLine(assembly.GetDescription());
        Console.ReadKey();
    }
}

Answer 9

在这里,你可以很容易地听从两条法典,如果这太大,你可以把它放在一种延伸方法上:

public static string GetAssemblyDescription(this Assembly assembly)
{
    return assembly.GetCustomAttributes(typeof(AssemblyDescriptionAttribute), false)
        .OfType<AssemblyDescriptionAttribute>().SingleOrDefault()?.Description;
}

然后,你才采用这样的推广方法:

Console.WriteLine(typeof(Program).Assembly.GetAssemblyDescription());

Answer 10

If you re referring to the Description in the Assembly Information: Project s Assembly Information Window

[项目――和项目;申请――和;议会信息]

I would recommend using the AssemblyInfo Class, you can see an example here:

当我使用时,我有一个<代码>。类型:, 采用思考方式,并做到:

using Microsoft.VisualBasic.ApplicationServices;

AssemblyInfo info = new AssemblyInfo(type.Assembly);
string description = info.Description;

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