How to remove some portion of string from a string in asp.net

Just a note, in addition to existing answers: strings are immutable. No matter you do with strings, you never "remove", "add" or "modify" anything it a string. Instead, a brand-new string is created. It's important to know due to its performance and multithreading implications. For example, repeating "+" is very bad. A mutable version of string is System.Text.StringBuilder. Use it for performance, convert to string simply using System.Text.StringBuilder.ToString().

—SA

the best thing would be to split your string on a seperator ":"

string s = "Name : Mohd Wasif";
string[] words = s.Split( ':'); // split string on seperator

Label.Text = words[1].Trim( ); // assign trimmed value without leading or trailing spaces

u can use substring method for that..
search substring on net

Label1.Text.SubString(7);

or

Label1.Text.Replace("Name : ", Label1.Text);

Replace Label1.Text with the variable you have taken......Enjoy

use regular expression

Regex.Match(input, @"^Name\s:\s(?<name>.+.?)", RegexOptions.IgnoreCase | RegexOptions.Compiled).Groups["name"].Value
</name>