Question

How would I use a for loop to go through a listBox and remove words before a certain character?

For example if my listBox contains items resembling the following:

','ae5e87df42fa5921

And I want to remove everything before the ',' how would I do so with each item in the listBox?

Thanks!

Answer 1

In a for loop you can simply call item = item.Substring(item.LastIndexOf("','"))
Like so:

ListBox lb = new ListBox();
lb.Items.Add("12341','2341");
lb.Items.Add("123415','112341");
lb.Items.Add("543225','11234134");
for (int i = 0; i < lb.Items.Count; i++) {
    string item = lb.Items[i] as string;
    item = item.Substring(item.LastIndexOf("','"));
    lb.Items[i] = item;
}

Edit:
Here you have full example, which works. Just add the ListBox and the button, and assign the event to it’s Click handler:

public partial class Form1 : Form {
    public Form1() {
        InitializeComponent();
        lb.Items.Add("12341','2341");
        lb.Items.Add("123415','112341");
        lb.Items.Add("543225','11234134");
    }

    private void button1_Click(object sender, EventArgs e) {
        for (int i = 0; i < lb.Items.Count; i++) {
            string item = lb.Items[i] as string;
            item = item.Substring(item.LastIndexOf("','"));
            lb.Items[i] = item;
        }
    }
}

It IS working.