对象自卸车类(object dumper class)

2019-06-21 05:35发布

我在寻找一个类,它可以输出一个对象,并在类似这样的格式,它的所有叶值:

User
  - Name: Gordon
  - Age : 60
  - WorkAddress
     - Street: 10 Downing Street
     - Town: London
     - Country: UK
  - HomeAddresses[0]
    ...
  - HomeAddresses[1]
    ...

(或者更清晰的格式)。 这将相当于:

public class User
{
    public string Name { get;set; }
    public int Age { get;set; }
    public Address WorkAddress { get;set; }
    public List<Address> HomeAddresses { get;set; }
}

public class Address
{
    public string Street { get;set; }
    public string Town { get;set; }
    public string Country { get;set; }
}

一类PropertyGrid控件的字符串表示的,减去不必实现一大组设计者为每个类型的。

PHP有东西做这个叫的var_dump 。 我不想用一个手表,因为这是打印出来。

任何人都可以点我这样的事情,如果它的存在? 或者,写一个赏金。

Answer 1:

对象自卸车张贴在sgmoore的链接:

//Copyright (C) Microsoft Corporation.  All rights reserved.

using System;
using System.IO;
using System.Collections;
using System.Collections.Generic;
using System.Reflection;

// See the ReadMe.html for additional information
public class ObjectDumper {

    public static void Write(object element)
    {
        Write(element, 0);
    }

    public static void Write(object element, int depth)
    {
        Write(element, depth, Console.Out);
    }

    public static void Write(object element, int depth, TextWriter log)
    {
        ObjectDumper dumper = new ObjectDumper(depth);
        dumper.writer = log;
        dumper.WriteObject(null, element);
    }

    TextWriter writer;
    int pos;
    int level;
    int depth;

    private ObjectDumper(int depth)
    {
        this.depth = depth;
    }

    private void Write(string s)
    {
        if (s != null) {
            writer.Write(s);
            pos += s.Length;
        }
    }

    private void WriteIndent()
    {
        for (int i = 0; i < level; i++) writer.Write("  ");
    }

    private void WriteLine()
    {
        writer.WriteLine();
        pos = 0;
    }

    private void WriteTab()
    {
        Write("  ");
        while (pos % 8 != 0) Write(" ");
    }

    private void WriteObject(string prefix, object element)
    {
        if (element == null || element is ValueType || element is string) {
            WriteIndent();
            Write(prefix);
            WriteValue(element);
            WriteLine();
        }
        else {
            IEnumerable enumerableElement = element as IEnumerable;
            if (enumerableElement != null) {
                foreach (object item in enumerableElement) {
                    if (item is IEnumerable && !(item is string)) {
                        WriteIndent();
                        Write(prefix);
                        Write("...");
                        WriteLine();
                        if (level < depth) {
                            level++;
                            WriteObject(prefix, item);
                            level--;
                        }
                    }
                    else {
                        WriteObject(prefix, item);
                    }
                }
            }
            else {
                MemberInfo[] members = element.GetType().GetMembers(BindingFlags.Public | BindingFlags.Instance);
                WriteIndent();
                Write(prefix);
                bool propWritten = false;
                foreach (MemberInfo m in members) {
                    FieldInfo f = m as FieldInfo;
                    PropertyInfo p = m as PropertyInfo;
                    if (f != null || p != null) {
                        if (propWritten) {
                            WriteTab();
                        }
                        else {
                            propWritten = true;
                        }
                        Write(m.Name);
                        Write("=");
                        Type t = f != null ? f.FieldType : p.PropertyType;
                        if (t.IsValueType || t == typeof(string)) {
                            WriteValue(f != null ? f.GetValue(element) : p.GetValue(element, null));
                        }
                        else {
                            if (typeof(IEnumerable).IsAssignableFrom(t)) {
                                Write("...");
                            }
                            else {
                                Write("{ }");
                            }
                        }
                    }
                }
                if (propWritten) WriteLine();
                if (level < depth) {
                    foreach (MemberInfo m in members) {
                        FieldInfo f = m as FieldInfo;
                        PropertyInfo p = m as PropertyInfo;
                        if (f != null || p != null) {
                            Type t = f != null ? f.FieldType : p.PropertyType;
                            if (!(t.IsValueType || t == typeof(string))) {
                                object value = f != null ? f.GetValue(element) : p.GetValue(element, null);
                                if (value != null) {
                                    level++;
                                    WriteObject(m.Name + ": ", value);
                                    level--;
                                }
                            }
                        }
                    }
                }
            }
        }
    }

    private void WriteValue(object o)
    {
        if (o == null) {
            Write("null");
        }
        else if (o is DateTime) {
            Write(((DateTime)o).ToShortDateString());
        }
        else if (o is ValueType || o is string) {
            Write(o.ToString());
        }
        else if (o is IEnumerable) {
            Write("...");
        }
        else {
            Write("{ }");
        }
    }
}

2015年更新

YAML也服务于这一目的的相当不错,这就是如何将其与YamlDotNet完成

install-package YamlDotNet

    private static void DumpAsYaml(object o)
    {
        var stringBuilder = new StringBuilder();
        var serializer = new Serializer();
        serializer.Serialize(new IndentedTextWriter(new StringWriter(stringBuilder)), o);
        Console.WriteLine(stringBuilder);
    }


Answer 2:

你可以使用JSON串行器,这应该是容易阅读的人使用JSON的

User theUser = new User();
theUser.Name = "Joe";
System.Runtime.Serialization.Json.DataContractJsonSerializer serializer = new System.Runtime.Serialization.Json.DataContractJsonSerializer(myPerson.GetType());
MemoryStream ms = new MemoryStream();
serializer.WriteObject(ms, theUser );
string json = Encoding.Default.GetString(ms.ToArray()); 


Answer 3:

更新2019

你可以找到ObjectDumper项目在GitHub上。 您还可以添加它通过通过NuGet包管理器的Visual Studio。



Answer 4:

如果你使用的标记工作, System.Web.ObjectInfo.Print (ASP.NET网页2)将做到这一点,很好地格式化的HTML。

例如:

@ObjectInfo.Print(new {
    Foo = "Hello",
    Bar = "World",
    Qux = new {
        Number = 42,
    },
})

在网页中,产生:



Answer 5:

下面是一个Visual Studio扩展我写这样做:

https://visualstudiogallery.msdn.microsoft.com/c6a21c68-f815-4895-999f-cd0885d8774f

在行动:



Answer 6:

你可以与反思的一点点写的很容易。 东西有点像:

public void Print(object value, int depth)
{
    foreach(var property in value.GetType().GetProperties())
    {
        var subValue = property.GetValue(value);
        if(subValue is IEnumerable)
        {
             PrintArray(property, (IEnumerable)subValue);
        }
        else
        {
             PrintProperty(property, subValue);
        }         
    }
}

你可以写上去PrintArray和PrintProperty方法。



Answer 7:

我有一个方便的T.Dump()扩展方法 ,应该是非常接近你要找的结果。 作为其扩展方法,它的非侵入性的,并应在所有POCO对象。

用法示例

var model = new TestModel();
Console.WriteLine(model.Dump());

示例输出

{
    Int: 1,
    String: One,
    DateTime: 2010-04-11,
    Guid: c050437f6fcd46be9b2d0806a0860b3e,
    EmptyIntList: [],
    IntList:
    [
        1,
        2,
        3
    ],
    StringList:
    [
        one,
        two,
        three
    ],
    StringIntMap:
    {
        a: 1,
        b: 2,
        c: 3
    }
}


Answer 8:

我知道这是一个老问题,但认为我会扔出去为我工作的替代,我花了大约两分钟的事情。

安装Newtonsoft Json.NET: http://james.newtonking.com/json

(或版本的NuGet) http://www.nuget.org/packages/newtonsoft.json/

参考大会:

using Newtonsoft.Json;

转储JSON字符串登录:

txtResult.Text = JsonConvert.SerializeObject(testObj);


Answer 9:

如果你不喜欢复制和粘贴克里斯小号的代码,在Visual Studio 2008克的样品都配有ObjectDumper。

驱动器:\ Program Files文件\微软的Visual Studio 9.0 \样本\ 1033 \ LinqSamples \ ObjectDumper



Answer 10:

这是一种替代方案:

using System.Reflection;
public void Print(object value)
{
    PropertyInfo[] myPropertyInfo;
    string temp="Properties of "+value+" are:\n";
    myPropertyInfo = value.GetType().GetProperties();
    for (int i = 0; i < myPropertyInfo.Length; i++)
    {
        temp+=myPropertyInfo[i].ToString().PadRight(50)+" = "+myPropertyInfo[i].GetValue(value, null)+"\n";
    }
    MessageBox.Show(temp);
}

(刚好接触1级,没有深度,但说了很多)



Answer 11:

对于大多数类,你可以使用的DataContractSerializer



文章来源: object dumper class