Remove characters in a string using c#

                                        
public static void main(String args[])
{
string founder = "Venkatesan Prabu is a founder of Wikitechy";  
// Remove all characters after first 25 chars  
string first25 = founder.Remove(25);  
Console.WriteLine(first25);  
// Remove characters start at the 10th position, next 12 characters  
String newStr = founder.Remove(10, 12);  
Console.WriteLine(newStr); 

// Remove everything after founder  
int pos = founder.IndexOf("founder");  
if (pos >= 0) {  
    // String after founder  
    string afterFounder = founder.Remove(pos);  
    Console.WriteLine(afterFounder);  
    // Remove everything before founder but include founder  
    string beforeFounder = founder.Remove(0, pos);  
    Console.Write(beforeFounder);  
}  

}