CODEWITHSUNDEEP
c#linq
mnsr
mnsr

Reputation: 12437

C# Linq List Compare and update lists

I have 2 lists containing different types. One is a string[] and another is a List<SelectListItem>.

SelectListItem (it's in mvc):

public string Text {get;set;}
public string Value {get;set;}
public bool Selected {get;set;}

My string[] is just contains some text values.

What i'm trying to do is, get whatever is in the string[], then set "Selected = true" for whatever Value matches, and "Selected = false" for what doesnt match.

So lets say my string[] is:

Test1
Test2
Test3

And my List<SelectListItem> is:

new SelectListItem { Text = "Testing", Value = "Test1", Selected = false },
new SelectListItem { Text = "Testing", Value = "Test4", Selected = true }

In the above List<SelectListItem>, i have one match. So what i'd like to do, is set Selected = true for that particular entry so that i end up with:

new SelectListItem { Text = "Testing", Value = "Test1", Selected = true },
new SelectListItem { Text = "Testing", Value = "Test4", Selected = false }

How would I achieve this?

Upvotes: 3

Views: 2738

Answers (3)

Nikhil Agrawal
Nikhil Agrawal

Reputation: 48558

How about

list.ForEach(x => x.Selected = stringarray.Contains(x.Value))

Upvotes: 1

Reza ArabQaeni
Reza ArabQaeni

Reputation: 4907

var items = SelectListItems.Where(p=>stringArray.Contains(p));;
foreach(var item in items)
    item.Selected=true;

Upvotes: 0

lc.
lc.

Reputation: 116448

foreach(var i in selectListItemList)
    i.Selected = stringArray.Contains(i.Value);

or using List.ForEach:

selectListItemList.ForEach(i => i.Selected = stringArray.Contains(i.Value));

Upvotes: 2

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