C# Remove items from class array

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 ??**
}
}

Already asked here: http://stackoverflow.com/questions/496896/how-to-delete-an-element-from-an-array-in-c — LaGrandMere, Sep 22 '11 at 15:37
you might want to rething the *remove everything whose Address* `.Contains("")` statement in there — Random Dev, Sep 22 '11 at 15:39

score 5 · Accepted Answer · answered Sep 22 '11 at 15:37

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();

score 0 · Answer 2 · answered Sep 22 '11 at 15:37

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 '11 at 15:37

JaredPar

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@StriplingWarrior updated to reflect OP should be using `List` vs. an array – JaredPar Sep 22 '11 at 15:39
I don't see a 'RemoveAt' option. Don't know why! – CoolArchTek Sep 22 '11 at 15:39

C# Remove items from class array

2 Answers2