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How to remove all characters from StringBuilder in C#

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StringBuilder.Clear Method is used to remove all the characters from the current StringBuilder instance. Syntax:
public System.Text.StringBuilder Clear ();
It returns an StringBuilder object whose length will be zero. Note:
  • Clear is a convenience method that is equivalent to setting the Length property of the current instance to 0 (zero).
  • Calling the Clear method does not modify the current instance’s Capacity or MaxCapacity property.
Example:
// C# program to demonstrate
// the Clear() Method
using System;
using System.Text;
  
class GFG {
  
    // Main Method
    public static void Main(String[] args)
    {
        // Creating a StringBuilder object
        StringBuilder sb1 = new StringBuilder("GeeksforGeeks");
  
        // printing the length of "GeeksforGeeks"
        Console.WriteLine("The String is: {0} \nTotal characters -- {1}",
                                             sb1.ToString(), sb1.Length);
  
        // using the method
        sb1.Clear();
  
        // printing the length of "GeeksforGeeks"
        Console.WriteLine("The String is: {0} \nTotal characters -- {1}",
                                             sb1.ToString(), sb1.Length);
  
        sb1.Append("This  is C# Tutorials.");
  
        // printing the length of "GeeksforGeeks"
        Console.WriteLine("The String is: {0} \nTotal characters -- {1}",
                                             sb1.ToString(), sb1.Length);
    }
}

                    
Output:
The String is: GeeksforGeeks 
Total characters -- 13
The String is:  
Total characters -- 0
The String is: This  is C# Tutorials. 
Total characters -- 22
Reference:

Last Updated : 28 Jan, 2019
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