C# String Trim Method (TrimStart, TrimEnd)

In c#, the string Trim method is used to remove all trailing and leading whitespace characters from the specified string object.

 

By using Trim() method, we can also remove all occurrences of specified characters from the start and end of the current string.

 

Following is the pictorial representation of using string Trim() method to remove all leading and trailing whitespaces from the defined string in c# programming language.

 

C# String Trim Method Representation Diagram

 

If you observe above diagram, we defined a string called “Welcome to Tutlane” and by using string Trim() method we removed all trailing and leading white-spaces from defined string object.

C# String Trim Method Syntax

Following is the syntax of defining a string Trim method to remove all leading and trailing whitespaces or specified characters from the string object in c# programming language.

 

public string Trim()

public string Trim(char[] trimChars)

If you observe above syntaxes, the first syntax is used to remove all whitespaces from the starting and ending of specified string and it won’t take any parameters.

 

The second syntax is used to remove trailing and leading occurrences of specified characters in an array from the current string object.

C# String Trim() Method Example

Following is the example of using string Trim() method to remove starting and ending of whitespaces or specified characters from the string object in c# programming language.

 

using System;

 

namespace Tutlane

{

    class Program

    {

        static void Main(string[] args)

        {

            // Trim Whitespaces

            string str1 = "  Welcome";

            string str2 = "    to    ";

            string str3 = "    Tutlane";

            Console.WriteLine("Before Trim: {0} {1} {2}", str1, str2, str3);

            Console.WriteLine("After Trim: {0} {1} {2}", str1.Trim(), str2.Trim(), str3.Trim());

            char[] trimChars = { '*', '@', ' ' };

            // Trim with Characters

            string str4 = "@@**  Suresh Dasari  **@";

            Console.WriteLine("Before Trim: {0}", str4);

            Console.WriteLine("After Trim: {0}", str4.Trim(trimChars));

            Console.WriteLine("\nPress Enter Key to Exit..");

            Console.ReadLine();

        }

    }

}

If you observe above example, we used a string Trim() method with or without characters to remove all leading and trailing whitespaces and defined characters from the string object.

 

When we execute above c# program, we will get the result like as shown below.

 

C# String Trim Method Example Result

 

If you observe above result, the string Trim() method is removing all trailing and leading whitespaces and set of characters from the string object based on our requirements.

C# String TrimStart() Method

In c#, the Trim() method will remove all trailing and leading whitespaces or defined characters from the current string object. In case, if we want to remove only trailing or starting occurrences of whitespaces or characters from the string, then we need to use TrimStart() method.

 

In c#, the string TrimStart() method is used to remove all trailing occurrences of whitespaces or specified characters in an array from the string object.

 

Following is the example of using TrimStart() method to remove all trailing or starting occurrences of whitespaces or specified characters from the string object.

 

using System;

 

namespace Tutlane

{

    class Program

    {

        static void Main(string[] args)

        {

            // Trim Whitespaces

            string str1 = "  Welcome";

            string str2 = "    to    ";

            string str3 = "    Tutlane";

            Console.WriteLine("Before Trim: {0} {1} {2}", str1, str2, str3);

            Console.WriteLine("After Trim: {0} {1} {2}", str1.TrimStart(), str2.TrimStart(), str3.TrimStart());

            char[] trimChars = { '*', '@', ' ' };

            // Trim with Characters

            string str4 = "@@**  Suresh Dasari  **@";

            Console.WriteLine("Before Trim: {0}", str4);

            Console.WriteLine("After Trim: {0}", str4.TrimStart(trimChars));

            Console.WriteLine("\nPress Enter Key to Exit..");

            Console.ReadLine();

        }

    }

}

If you observe above example, we used a TrimStart() method to remove all trailing occurrences of whitespaces and specified characters in string object.

 

When we execute above c# program, we will get the result like as shown below.

 

C# String Trimstart Method Example Result

 

If you observe above result, the string TrimStart() method has removed only trailing or starting whitespaces and defined characters from the given string object.

C# String TrimEnd() Method

Generally, in c# the Trim() method will remove all trailing and leading whitespaces or defined characters from the current string object. In case, if we want to remove only leading or ending occurrences of whitespaces or characters from the string, then we need to use TrimEnd() method.

 

In c#, the string TrimEnd() method is used to remove all leading or ending occurrences of whitespaces or specified characters in an array from the string object.

 

Following is the example of using TrimEnd() method to remove all leading or ending occurrences of whitespaces or specified characters from the string object.

 

using System;

 

namespace Tutlane

{

    class Program

    {

        static void Main(string[] args)

        {

            // Trim Whitespaces

            string str1 = "  Welcome   ";

            string str2 = "    to  ";

            string str3 = "    Tutlane  ";

            Console.WriteLine("Before Trim: {0} {1} {2}", str1, str2, str3);

            Console.WriteLine("After Trim: {0} {1} {2}", str1.TrimEnd(), str2.TrimEnd(), str3.TrimEnd());

            char[] trimChars = { '*', '@', ' ' };

            // Trim with Characters

            string str4 = "@@**  Suresh Dasari  **@";

            Console.WriteLine("Before Trim: {0}", str4);

            Console.WriteLine("After Trim: {0}", str4.TrimEnd(trimChars));

            Console.WriteLine("\nPress Enter Key to Exit..");

            Console.ReadLine();

        }

    }

}

If you observe above example, we used a TrimEnd() method to remove all leading occurrences of whitespaces and specified characters in string object.

 

When we execute above c# program, we will get the result like as shown below.

 

C# String TrimEnd Method Example Result

 

If you observe above result, the string TrimEnd() method has removed only leading or ending whitespaces and defined characters from the given string object.

 

This is how we can use string Trim(), TrimStart(), TrimEnd() methods in c# to trim string objects in c# programming language based on our requirements.