C# How to index arrays

manpreet Best Answer 2 years ago

I want to add strings of a particular array in a combobox when I select item in another combobox and click a button. There are two arrays">arrays, S0 and S1. In S0 there are strings for syllabus of Mathemtics, and in S1 there are strings of syllabus for English.

My code:

for (int x = 0; x <= 1 ; x++)
{
    if (comboBox1.SelectedIndex == x)
    {
        foreach (string items in S+x  )
        {
            comboBox2.Items.Add(items);
        }
    }
}

manpreet 2 years ago

Unless you are planning to add additional subjects to the system, just use 2 separate foreach loops. If you want to make it expandible, use a 2 dimensional array of strings:

string[,] data;

//Fill data here using the first dimension for the subjects and the second for the different items in the subject. data[0,0] could be "Pythagoras" and data[1,0] "Shakespeare" for example.

for (int i=0; i<data.GetLength(0); i++)
    {
    for (int j=0; j<data.GetLength(1); j++)
        {
        comboBox2.Items.Add(data[i, j]);
        }
    }