Question

Ok I currently have this code

        public int i = 0; //this is outside of the private void button1_click
        string str = txtEmail.Text;
        int pos = str.LastIndexOf("@");
        string str2 = str.Substring(pos);
        string str3 = str.Substring(0, str.LastIndexOf("@"));
        txtEmail.Text = str3 + i++ + str2;

it splits the email into 2 string then combines them with an integer between them, But I want it to change the integer. But that code just makes it lets saying the text becomes [e-mail] when i press the button to increase the 1 to a 2 it just does this instead. [e-mail] and so on. how do i get it to just add 1 to the 1 and not put a 2 next to the 1?

Answer 1

I tested the following and it looks like it solves your problem. Change this line of yours:

string str = txtEmail.Text; 

To this:

string str = txtEmail.Text.Replace(string.Format("{0}@", i - 1), "@");

It sets it up so that your email addresses will be in the form of:

[e-mail] 
[e-mail] 
[e-mail] 
etc.