Converting index of one dimensional array into two dimensional array i. e. row and column

Question

I have one application of WinForms which inside list box I am inserting name and price..name and price are stored in two dimensional array respectively. Now whe

Answer 1

Well, if I understand you correctly, in your case, obviously the index of the ListBox entry's array entry is the index in the ListBox. The name and price are then at index 0 and index 1 of that array element.

Example:

string[][] namesAndPrices = ...;

// To fill the list with entries like "Name: 123.45"
foreach (string[] nameAndPrice in namesAndPrices)
   listBox1.Items.Add(String.Format("{0}: {1}", nameAndPrice[0], nameAndPrice[1]));

// To get the array and the name and price, it's enough to use the index
string[] selectedArray = namesAndPrices[listBox1.SelectedIndex];
string theName = selectedArray[0];
string thePrice = selectedArray[1];

If you have an array like that:

string[] namesAndPrices = new string[] { "Hello", "123", "World", "234" };

Things are different. In that case, the indices are

int indexOfName = listBox1.SelectedIndex * 2;
int indexOfPrice = listBox1.SelectedIndex * 2 + 1;