C# Trim Function Explained: Remove Spaces Fast

The function Trim() in C# is used to remove any leading or trailing spaces or specified characters from a string. It returns a new string that is the result of removing the specified characters from the beginning and end of the original string.

For example, if we have a string variable str with a value of “hello world”, we can use the Trim() function to remove leading and trailing spaces as shown below:

string str = "  hello world  ";
string trimmedStr = str.Trim();
Console.WriteLine(trimmedStr);  // 输出："hello world"

In addition to the default white space characters, we can also pass a character array or a character set as a parameter to remove specified characters from the beginning and end of a string. For example, we can use the Trim() function to remove the ‘!’ character from the beginning and end of a string, as shown below:

string str = "!!hello world!!";
char[] charsToTrim = { '!' };
string trimmedStr = str.Trim(charsToTrim);
Console.WriteLine(trimmedStr);  // 输出："hello world"

It is important to note that the Trim() function does not modify the original string, but instead returns a new string. If you want to modify the original string, use the TrimStart() and TrimEnd() functions.