Listbox variable selection

Swan

heres the deal I want a user to select 2 dffrent items from 2 listboxes , the items being a description. I want to have these items equal some number (diffrent numbers) to be added together and be output to the user. How do I declare numer values to the listbox items to be added together? I have no solid code to show because i cant solve this issue yet. thx

5 Replies

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a.wilco20y ago
I read your question differently, so heres my stab at an answer :)

You can put any item in a listbox, and the text it shows comes from the ToString() method. So if you want to associate a number, try making your own little class:

class ListBoxNumberedItem
{
public string Text;
public int Number;

public override ToString()
{
return this.Text;
}
}

then add them to your listbox:

...
ListBoxNumberedItem Item1 = new ListBoxNumberedItem();

Item1.Text = "Hello World";
Item1.Number = 2;

ListBox.Items.Add(Item1);
...

then pull it out the listbox

ListBoxNumberedItem ItemSel1 = (ListBoxNumberedItem)ListBox.SelectedItem;

do that for both listboxes, then just add the number values

int answer = ItemSel1.Number + ItemSel2.Number;
0
will he20y ago
If you understand your question correctly, I suggest you use ArrayList.

.....
ArrayList selectedList = new ArrayList();
....
foreach(string item in itemOneBox.Items)
{
    if(item == keyNumb)
       selectedList.Add(item);
}

foreach(string item in itemTwoBox.items)
{
    if(item == keyNumb)
        selectedList.Add(item);
}

foreach(string item in selectedList)
    targetItemBox.Items.add(item);

......

short, easy, But I don't if it fit your requirment. Any question, email to me: [email protected]
0

Swan20y ago

got it....it may not be perfect but it works:

private void btnDo_Click(object sender, System.EventArgs e)
		{
			
				int intAMD1 =5;
				int intAMD2 =10;
				int intAMD3 =15;
				
				
				int intIntel1 = 2;
				int intIntel2 = 4;
				int intIntel3 = 6;
				int intBox1 = 0;
				int intBoxx = 0;
				
			
			
			if(listBoxAmd.Text=="amd1")
			{
				intBox1=intAMD1;
			}
			else if(listBoxAmd.Text=="amd2")
			{
				intBox1=intAMD2;
			}
			else if(listBoxAmd.Text=="amd3")
			{
				intBox1=intAMD3;
			}
			else
			{
			};

		
			if(listBox2.Text=="Intel1")
			{
				intBoxx=intIntel1;
			}
			else if(listBox2.Text=="Intel2")
			{
				intBoxx=intIntel2;
			}
			else if(listBox2.Text=="Intel3")
			{
				intBoxx=intIntel3;
			}
			else
			{
			};

			int intResult = intBox1 + intBoxx ;

			label1.Text=Convert.ToString(intResult);

Swan20y ago
except the listbox items I need are text strings not integers.... the items need corrisponding values to be used as needed when the user select the text item that matchs their criteria , the user nver sees a number other then output.
0
Antti20y ago
listbox1.Items.Add(12); listbox2.Items.Add(23); ... int num1 = (int)listbox1.Items[listbox1.SelectedIndex]; int num2 = (int)listbox2.Items[listbox2.SelectedIndex]; int result = num1 + num2; MessageBox.Show(num1 +"+"+num2+"="+result);

Can it be more simpler?
0