Скачать или смотреть Extracting Profile Names from Strings in C# with Regex

Learn how to efficiently extract specific text patterns from strings in C# using Regular Expressions to retrieve profile names.
---
This video is based on the question https://stackoverflow.com/q/63643307/ asked by the user 'Ninh Truong Huu Ha' ( https://stackoverflow.com/u/12302142/ ) and on the answer https://stackoverflow.com/a/63643500/ provided by the user 'Muaath' ( https://stackoverflow.com/u/12852914/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: How to get specific text from string in C#

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Extracting Profile Names in C# Using Regex

When working with strings in C# , you might often find yourself needing to extract specific pieces of data from them. A common scenario involves retrieving only certain portions of a string based on patterns. For example, if you have type names such as "ST230X52", "S310X74", "WT305X62.5", and "305x457x127UBT", how do you extract just their profile names, which would output to "ST", "S", "WT", and "UBT"? In this post, we’ll walk you through how to achieve this using Regular Expressions in C# .

Understanding the Requirements

Before diving into the solution, let’s clarify what we want to accomplish:

Input: A string containing type names with alphanumeric characters.

Output: A string that captures only the uppercase letters found at the beginning before any numbers or other characters appear.

Given these requirements, we can jump into how to implement this in C# . For this, we’ll use Regular Expressions.

The Solution

Using Regular Expressions in C#

Regular Expressions (Regex) are a powerful tool for pattern matching. Here’s a step-by-step breakdown of the solution code that will help you extract the profile name from the input type name.

[[See Video to Reveal this Text or Code Snippet]]

Code Explanation

Variables:

We define a variable List<char> result which will hold the uppercase characters we find.

The boolean variable startFinding helps track when we have started finding uppercase letters.

Looping Through Each Character:

We use a foreach loop to iterate through each character of the input string.

With Regex.IsMatch(c.ToString(), "[A-Z]"), we check if the character is an uppercase letter.

Building the Result:

If the character is uppercase, we add it to the result list and set startFinding to true.

Once we encounter a non-uppercase character after having found uppercase ones, we exit the loop.

Results

When you run the above method on your type names, you'll get the following results:

[[See Video to Reveal this Text or Code Snippet]]

These represent the profile names extracted from the original type names, effectively accomplishing our original goal.

Conclusion

Extracting specific patterns from strings can be simplified using Regular Expressions in C# . This example demonstrates how you can efficiently isolate uppercase letters that signify profile names from more complex string inputs. Next time you face a similar challenge, remember this method! By following the steps outlined above, you'll be able to tailor your solutions to extract exactly what you need from any given string. Happy Coding!