I have an error, can you help me?

Question

1.00/5 (4 votes)

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I have an Error when I write this code :

for (int i = 0; i < ListBox1.Items.Count - 1; i++)
{
  if (ListBox1.Items[i].Selected)
    TextBox1.Text = ListBox1.Items[i].Text;
}

return null;

Posted 10-Nov-10 19:35pm

raheleh_es

Updated 10-Nov-10 19:45pm

JF2015

v2

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Comments

R. Erasmus 11-Nov-10 5:54am

What error are you getting?
One error that I picked up is "ListBox1.Items.Count - 1" should be "ListBox1.Items.Count" as you're using a '<' operator.

3 solutions

Solution 3

what error you got? paste the exception code here

Posted 10-Nov-10 21:21pm

imaxis

Comments

Ankur^\m/ 11-Nov-10 4:31am

You should put that as a comment below the question instead of an answer.

Solution 1

I think you want to add the selected item of list box into the text box.for that

first initialise

TextBox1.Text=string.empty;

TextBox1.Text += ListBox1.Items[i].Text;

or

TextBox1.Text =TextBox1.Text+ ListBox1.Items[i].Text;

Posted 10-Nov-10 19:44pm

User CP

Updated 10-Nov-10 21:50pm

v2

Comments

Kanasz Robert 11-Nov-10 3:19am

Hi, he wants to loop through selected items. In your answer base idea is missing. sorry.

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Kanasz Robert · Accepted Answer · 2010-11-10T21:16:00

Solution 2

Hi,
if you want to loop though selected items just use SelectedItems property of ListBox:

C#

for (int i = 0; i < this.listBox1.SelectedItems.Count; i++)
{
    textBox1.Text += listBox1.SelectedItems[i].ToString() + "\r\n";
}

Posted 10-Nov-10 21:16pm

Kanasz Robert

Comments

Dalek Dave 11-Nov-10 3:50am

Good Call.

Ankur^\m/ 11-Nov-10 4:28am

OP has never mentioned that he wants to loop through the selected items. Moreover if that would have been the case, his code would have been textBox1.Text += and not textBox1.Text =
Note '+=' and '=' difference.
BTW this is his second post for the same question. The original one has been answered here: http://www.codeproject.com/Answers/126467/How-to-read-selected.aspx

Kanasz Robert 11-Nov-10 5:54am

Look at his code. He try to test, whether item is selected. Because of this I guess he want to loop though selected items.

Manfred Rudolf Bihy 29-Nov-10 8:52am

I agree with Robert on this.Seems pretty clear from his code that he only wants the selected bits. My 5!