---
title: "How to solve Regular expression for validating ID in C# asp.net?"  
description: "How to solve Regular expression for validating ID in C# asp.net?"  
author: "Anonymous User"  
published: 2015-01-14  
updated: 2015-01-14  
canonical: https://www.mindstick.com/forum/12854/how-to-solve-regular-expression-for-validating-id-in-c-sharp-asp-dot-net  
category: "asp.net"  
tags: ["c#", "regex"]  
reading_time: 1 minute  

---

# How to solve Regular expression for validating ID in C# asp.net?

What is [Regular expression](https://www.mindstick.com/articles/11909/java-regex-or-regular-expression-in-java) for validating ID in C# [asp.net](https://www.mindstick.com/articles/934/default-folders-available-inside-the-asp-dot-net-application-folder)?

I'd like to allow only alphabets, numbers and _-.

Thanks in [advance](https://www.mindstick.com/blog/33258/jee-mains-and-jee-advance-exams)!

## Replies

### Reply by Anonymous User

Try this regex

^[\w_-]+$

It allows one or multiple numbers, alphabets (upper and lower case), _, - symbols.


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Original Source: https://www.mindstick.com/forum/12854/how-to-solve-regular-expression-for-validating-id-in-c-sharp-asp-dot-net

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