Here's an easy way to do this.

You'll first need to set the ListBox font to a fixed width font such as Courier New.

The following code will then left align the fruit and right align the price within a field large enough to accomodate the widest item. If you want to right align to the width of the whole listbox, then I'd simply increase 'maxLen' to the maximum number of fixed width characters it can accomodate:

string[] AllFruits = 
 {
     "Apples $1.50",
     "Oranges $1.80",
     "Kiwis $3.10",
      "Bananas $1.00"
 };          
 int maxLen = 0;
// work out maximum length of the items 
foreach(string fruit in AllFruits)
 {  
     if (fruit.Length > maxLen) maxLen = fruit.Length;
 } 
// fill out all items to maximum length by inserting spaces before the $ sign           
 for(int i = 0; i < AllFruits.Length; i++)
 {
    if (AllFruits[i].Length == maxLen) continue;
    int index = AllFruits[i].IndexOf('$');
    string extraSpaces = new string(' ', maxLen - AllFruits[i].Length);
    AllFruits[i] = AllFruits[i].Insert(index, extraSpaces);
 }
 listBox1.Items.AddRange(AllFruits);

hi Vulpes,

I understand your logic of adding extra spaces.. I try out the code, but it does not seem to work. the price are not aligned RIGHT as what I want.

Apples $1.50
Oranges $1.80
Kiwis $3.10
Bananas $1.00

string[] AllFruits = {
};

How to fetch database (Column values) into this array?