Listbox variable selection

Question

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

a.wilco · Answer

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;

will he · Answer

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: hezhqing@gmail.com

Swan · Answer

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);

Swan · Answer

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.

Antti · Answer

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?