Question

I am trying to update value in c# dictionary object if value is something.

Dictionary<string, int> Section = new Dictionary<string, int>()
{
            {"a", 1},
            {"b", 0},
            {"c", 2},
            {"d", 0},
            {"e", 0},
            {"f", 0},
};

1. I want to loop through Section object and if value= 2 i want to set it to 1
2. I want to set the value = 1 from 4th element till end.(i.e, from “d” to “f”)

Thanks,

Praveen

I have tried,

foreach(var item in Section)
{
   if(item.value == 2)
   {
     item.value == 1;
   }
}

Answer 1

• I want to loop through Section object and if value= 2 i want to set it to 1

You can look through the Dictionary items, and change the value as needed.

This could be something like:

var itemsToEdit = Section.Where(kvp => kvp.Value == 2).Select(kvp => kvp.Key).ToList();
foreach(var item in itemsToEdit)
     Section[item] = 1;

• I want to set the value = 1 from 4th element till end.(i.e, from “d” to “f”)

Realize that, once you put the values in a dictionary, they lose all ordering. A Dictionary is inherently an unordered collection.