Trim String in C#

The Trim method trims a string from both ends by removing white spaces or a specified character or characters from the start and the end of a string.

 

In C#, Strings are immutable. That means, the method does not update the existing string but returns a new string.

 

String.Trim()

 

String.Trim() method has two overloaded forms. 

 

Method	Description
Trim(Char[])	Removes all leading and trailing occurrences of a set of characters specified in an array from the current String object.
Trim()	Removes all leading and trailing white-space characters from the current String object.

 

Example

 

The following example uses Trim methods to trim whitespaces and other characters from a string. 

// String with whitespaces
string hello = " hello C# Corner has white spaces ";
// Remove whitespaces from both ends
Console.WriteLine(hello.Trim());

// String with characters
string someString = ".....My name is Mahesh Chand****";
char[] charsToTrim = { '*', '.' };
string cleanString = someString.Trim(charsToTrim);
Console.WriteLine(cleanString);

Listing 1.

 

The output of Listing 1 looks like Figure 1.

 

 

 

Figure 1.

 

String.TrimStart()

 

String.TrimStart() method removes all leading occurrences of a set of characters specified in an array from the current String object.

 

Example

 

The following example uses TrimStart methods to trim whitespaces and other characters from the start of a string. 

// String with whitespaces
string hello = " hello C# Corner has white spaces ";
// Remove whitespaces from both ends
Console.WriteLine(hello.TrimStart());

// String with characters
string someString = ".....My name is Mahesh Chand****";
char[] charsToTrim = { '*', '.' };
string cleanString = someString.TrimStart(charsToTrim);
Console.WriteLine(cleanString);

Listing 2.

 

The output of Listing 2 looks like Figure 2.

 

 

 

Figure 2.

 

String.TrimEnd()

 

String.TrimEnd() method removes all trailing occurrences of a set of characters specified in an array from the current String object.

 

Example

 

The following example replaces all commas with a colon in a string. 

// String with whitespaces
string hello = " hello C# Corner has white spaces ";
// Remove whitespaces from both ends
Console.WriteLine(hello.TrimEnd());

// String with characters
string someString = ".....My name is Mahesh Chand****";
char[] charsToTrim = { '*', '.' };
string cleanString = someString.TrimEnd(charsToTrim);
Console.WriteLine(cleanString);

Listing 3.

 

The output of Listing 3 looks like Figure 3.

 

 

 

Figure 3.