Answers for "c# dictionary get key by value"

C#
6

access dic by key c#

using System;
using System.Collections.Generic;

class Program
{
    static void Main()
    {
        Dictionary<string, int> dictionary = new Dictionary<string, int>();

        dictionary.Add("apple", 1);
        dictionary.Add("windows", 5);

        // See whether Dictionary contains this string.
        if (dictionary.ContainsKey("apple"))
        {
            int value = dictionary["apple"];
            Console.WriteLine(value);
        }

        // See whether it contains this string.
        if (!dictionary.ContainsKey("acorn"))
        {
            Console.WriteLine(false);
        }
    }
}
Posted by: Guest on June-20-2020
1

get key value from object c#

Type myType = myObject.GetType();
IList<PropertyInfo> props = new List<PropertyInfo>(myType.GetProperties());

foreach (PropertyInfo prop in props)
{
    object propValue = prop.GetValue(myObject, null);

    // Do something with propValue
}
Posted by: Guest on January-06-2021
0

get key in dictionary c#

public static string GetKeyFromValue(string valueVar)
{
   foreach (string keyVar in dictionaryVar.Keys) 
   { 
      if (dictionaryVar[keyVar] == valueVar)
      {
         return keyVar;
      }
   }
   return null;
}
Posted by: Guest on November-05-2021

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