How to use Substring in Asp.net C#

The Substring method is used to extract the characters from any part of the string.The syntax is

Substring( start_position, num_of_chars_to_grab )

Example:

Substring(0,2)
0 is the starting index of the string
2 is the length or number of characters to be grab or extract.

Example to extract characters form a string using Textbox,Label and Button.

protected void Button1_Click(object sender, EventArgs e)

{

string a = TextBox1.Text.ToString();

string b = a.Substring(2, 2); //Extract 2 characters start from the 2 index position

Label1.Text = b.ToString();

}