sorting array with array.sort

Question

I have a listbox and I want to sort each item in that listbox from a-z and assign those code in a button. Do i need to assign the array to the listbox? and then use a loop ?

This is what I did:

protected void sortImageButton_Click(object sender, ImageClickEventArgs e)
{        
    string[] sort = new string[cartListBox.Items.Count];

    for (int i = 0; i < sort.Length; i++)
    {
        sort[i] = cartListBox.Items[i].ToString();
        Array.Sort(sort);
    }
}

However, when I click the button, it doesnt do anything.

you are sorting the string array. Do you expect the list box to be sorted? — gp.
– gp., Commented Sep 30, 2013 at 3:13
You should sort outside the loop. Also you should sort listbox separately. — Tilak
– Tilak, Commented Sep 30, 2013 at 3:16
yeah.... do i need to assign the array to the value of the listbox?? — Pé Bin
– Pé Bin, Commented Sep 30, 2013 at 3:19

Stay Foolish · Accepted Answer · 2013-09-30 03:26:49Z

3

You need to sort that outside the loop.

protected void sortImageButton_Click(object sender, ImageClickEventArgs e)
{        
    string[] sort = new string[cartListBox.Items.Count];

    for (int i = 0; i < sort.Length; i++)
    {
        sort[i] = cartListBox.Items[i].ToString();
    }
    Array.Sort(sort);

    for (int i = 0; i < sort.Length; i++)
    {
        // reset the order for the cartListBox collection according to the sort array, if needed
    }
}

answered Sep 30, 2013 at 3:26

Stay Foolish

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Community · Accepted Answer · 2020-06-20 09:12:55Z

1

Your ListBox has a Sorted Property that you can use to enable Sorting

cartListBox.Sorted = true;

From above MSDN Link:

Use the Sorted property to automatically sort strings alphabetically in a ListBox. As items are added to a sorted ListBox, the items are moved to the appropriate location in the sorted list. When adding items to a ListBox, it is more efficient to sort the items first and then add new items.

A ListBox with its Sorted set to true should not be bound to data using the DataSource property. To display sorted data in a bound ListBox, you should bind to a data source that supports sorting and have the data source provide the sorting.

edited Jun 20, 2020 at 9:12

CommunityBot

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answered Sep 30, 2013 at 3:18

Mark Hall

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1 Comment

Mark Hall Over a year ago

There is a Sorted statement see the link that I added, I also am assuming winforms

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