How to Split a String with a Specific String Delimiter in C#?

Use string delimiter to split string in C#

Splitting a string based on specific delimiters is a common task when working with text data. In C#, the Split method provides a convenient way to achieve this.

Problem Description

Consider the following string:

<code>"My name is Marco and I'm from Italy"</code>

We want to split this string into two parts using the delimiter "is Marco and". The desired result is an array containing the following elements:

• Index 0 is “My name”
• Index 1 is "I'm from Italy"

Solution

The

Split method in C# uses an array of strings as delimiters. To use a string as a delimiter, we can pass an array containing a single element like this:

<code class="language-csharp">string[] tokens = str.Split(new[] { "is Marco and" }, StringSplitOptions.None);</code>

Explanation

• str is the string we want to split.
• new[] { "is Marco and" } is an array containing delimiter strings.
• StringSplitOptions.None specifies that we want to split the string without removing empty elements.

Alternatives to single character separators

If the separator is a single character, such as comma (','), we can use a simplified version of the Split method as follows:

<code class="language-csharp">string[] tokens = str.Split(',');</code>

In this case, the delimiter is passed as a single character argument.

Note: It is important to note that the Split method is case sensitive. If you need to split a string with a different case of the delimiter, you should convert the delimiter string to the desired case before passing it to the Split method.

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