C# Remove items from class array [duplicate]

Question

Possible Duplicate:
Remove element of a regular array

I have a method defined which returns class array. ex: Sampleclass[] The Sampleclass has properties Name, Address, City, Zip. On the client side I wanted to loop through the array and remove unwanted items. I am able to loop thru, but not sure how to remove the item.

for (int i = 0; i < Sampleclass.Length; i++)
{
if (Sampleclass[i].Address.Contains(""))
{ 
**// How to remove ??**
}
}

you might want to rething the remove everything whose Address .Contains("") statement in there — Random Dev
– Random Dev, Commented Sep 22, 2011 at 15:39

BrokenGlass · Accepted Answer · 2011-09-22 15:37:08Z

5

Arrays are fixed size and don't allow you to remove items once allocated - for this you can use List<T> instead. Alternatively you could use Linq to filter and project to a new array:

var filteredSampleArray = Sampleclass.Where( x => !x.Address.Contains(someString))
                                     .ToArray();

answered Sep 22, 2011 at 15:37

BrokenGlass

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JaredPar · Accepted Answer · 2011-09-22 15:37:36Z

0

It's not possible to remove from an array in this fashion. Arrays are statically allocated collections who's size doesn't change. You need to use a collection like List<T> instead. With List<T> you could do the following

var i = 0;
while (i < Sampleclass.Count) {
  if (Sampleclass[i].Address.Contains("")) {
    Sampleclass.RemoveAt(i);
  } else {
    i++;
  }
}

answered Sep 22, 2011 at 15:37

JaredPar

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2 Comments

JaredPar Over a year ago

@StriplingWarrior updated to reflect OP should be using List<T> vs. an array

CoolArchTek Over a year ago

I don't see a 'RemoveAt' option. Don't know why!

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