How to convert class into Dictionary<string,string>?

问题:

Now again I am explaining one of my eagerness about Dictionary ! This question is popuped in my mind from answer of my previous question !!

Now the actual point is Can I convert Class into Dictionary ?

In Dictionary I want my class properties as KEY and value of particular property as VALUE

Suppose my class is

public class Location {     public string city { get; set; }     public string state { get; set; }     public string country { get; set; } 

Now suppose my data is

city = Delhi state = Delhi country = India 

Now you can understand my point easily !

I want to make Dictionary ! That dictionary should be like

Dictionary dix = new Dictionary (); dix.add("property_name", "property_value"); 

I can get the value ! But how can i get property names (not value)?

What should I code to create it dynamic ! That should work for every class which I want ?

You can understand this question as

How can i get list of properties from particular class ?

回答1:

This is the recipe: 1 reflection, 1 LINQ-to-Objects!

 someObject.GetType()      .GetProperties(BindingFlags.Instance | BindingFlags.Public)           .ToDictionary(prop => prop.Name, prop => prop.GetValue(someObject, null)) 

Since I published this answer I've checked that many people found it useful. I invite everyone looking for this simple solution to check another Q&A where I generalized it into an extension method: Mapping object to dictionary and vice versa.

回答2:

Here a example with reflection without linq:

    Location local = new Location();     local.city = "Lisbon";     local.country = "Portugal";     local.state = "None";      PropertyInfo[] infos = local.GetType().GetProperties();      Dictionary dix = new Dictionary ();      foreach (PropertyInfo info in infos)     {         dix.Add(info.Name, info.GetValue(local, null).ToString());     }      foreach (string key in dix.Keys)     {         Console.WriteLine("nameProperty: {0}; value: {1}", key, dix[key]);     }      Console.Read(); 

回答3:

Give this a try.

    public static Dictionary ObjectToDictionary(object obj)     {         Dictionary ret = new Dictionary();          foreach (PropertyInfo prop in obj.GetType().GetProperties())         {             string propName = prop.Name;             var val = obj.GetType().GetProperty(propName).GetValue(obj, null);             if (val != null)             {                 ret.Add(propName, val.ToString());             }             else             {                 ret.Add(propName, null);             }         }          return ret;     } 

回答4:

protected string getExamTimeBlock(object dataItem) {     var dt = ((System.Collections.Specialized.StringDictionary)(dataItem));      if (SPContext.Current.Web.CurrencyLocaleID == 1033) return dt["en"];     else return dt["sv"]; } 

回答5:

I would like to add an alternative to reflection, using JToken. You will need to check the benchmark difference between the two to see which has better performance.

var location = new Location() { City = "London" }; var locationToken = JToken.FromObject(location); var locationObject = locationObject.Value(); var locationPropertyList = locationObject.Properties()     .Select(x => new KeyValuePair(x.Name, x.Value.ToString())); 

Note this method is best for a flat class structure.

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