CODEWITHSUNDEEP
c#asp.netarraysarraylistint
Anthony Johnson
Anthony Johnson

Reputation: 273

convert listbox items to array integers C#

Having trouble adding integers to the item array of a list box. Cannot seem to convert the listbox to integer.

int[] ratingArray = new int[numberRatingsInt];
for (int i = 0; i < numberRatingsInt; i++)
{
    ratingArray[i] = Convert.ToInt32(ratingListBox.Items[i]);
}

Upvotes: 2

Views: 13632

Answers (4)

mmpatel009
mmpatel009

Reputation: 941

Please try this

var modarray = ratingListBox.Items.Cast<String>().ToArray();
int[] arr = modarray.Select(int.Parse).ToArray();

Upvotes: 1

Freelancer
Freelancer

Reputation: 9064

Add .ToString() to ratingListBox.Items[i]

It should be:

int[] ratingArray = new int[numberRatingsInt];
for (int i = 0; i < ratingListBox.Items.Count; i++)
{
    ratingArray[i] = Convert.ToInt32(ratingListBox.Items[i].ToString());
}

Just Tested:

.value after ratingListBox.Items[i] can also work.

It can also work like following:

int[] ratingArray = new int[numberRatingsInt];
for (int i = 0; i < ratingListBox.Items.Count; i++)
{
    ratingArray[i] = Convert.ToInt32(ratingListBox.Items[i].Value);
}

(This was tested added in reference to @Chris answer.)

Edit:

put ratingListBox.Items.Count in for loop condition.

Upvotes: 2

Dimitar Dimitrov
Dimitar Dimitrov

Reputation: 15138

Just to add to the other answers, you can also do a sexy lambda something like:

int[] ratingArray = ratingListBox.Items.OfType<ListItem>()
                                 .Select(x => int.Parse(x.Value))
                                 .ToArray();

This should get rid of all the loops counts, consts etc.

Upvotes: 2

Chris
Chris

Reputation: 2895

ListBoxes contain ListItems, not the value directly. Try this:

 int[] ratingArray = new int[numberRatingsInt];
    for (int i = 0; i < numberRatingsInt; i++)
    {
        ratingArray[i] = Convert.ToInt32(ratingListBox.Items[i].Value);
    }

Upvotes: 2

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