Checking if a list of objects contains a property with a specific value

Say I have the following code:

class SampleClass
{
    public int Id {get; set;}
    public string Name {get; set;}
}
List<SampleClass> myList = new List<SampleClass>开发者_如何学JAVA;();
//list is filled with objects
...
string nameToExtract = "test";

So my question is what List function can I use to extract from myList only the objects that have a Name property that matches my nameToExtract string.

I apologize in advance if this question is really simple/obvious.

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You can use the Enumerable.Where extension method:

var matches = myList.Where(p => p.Name == nameToExtract);

Returns an IEnumerable<SampleClass>. Assuming you want a filtered List, simply call .ToList() on the above.

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By the way, if I were writing the code above today, I'd do the equality check differently, given the complexities of Unicode string handling:

var matches = myList.Where(p => String.Equals(p.Name, nameToExtract, StringComparison.CurrentCulture));

See also

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list.Any(x=>x.name==string)

Could check any name prop included by list.

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myList.Where(item=>item.Name == nameToExtract)

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Further to the other answers suggesting LINQ, another alternative in this case would be to use the FindAll instance method:

List<SampleClass> results = myList.FindAll(x => x.Name == nameToExtract);

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using System.Linq;    
list.Where(x=> x.Name == nameToExtract);

Edit: misread question (now all matches)