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C# Parse Meta Tags

You may come across an instance in your C# and ASP.NET programming where you need to download an external webpage and parse the meta tags... specifically, the "Title," "Meta Description...

C#: Remove illegal characters from path and filenames

If you want to remove invalid chars "* . " / \ [ ] : ; | = ," from file name below is the code which can help you Sample code: using System; using System.IO; using System.Text.RegularEx...

Regex: Replace single backslash with double backslash

In this blog I will show how to replace single backslash with double backslash in a string with REGEX. Let's say we have a string "This is \ test \ string" and we want to replace single ...

Regex: Replace replace uppercase letter with underscore and the letter

In this blog I will show how to replace uppercase letter with "underscore and the letter "in a string with REGEX. Let's say we have a string "ThisIsTestString" and we want to r...

Regex: Replace replace underscores with hyphens

In this blog I will show how to replace underscores with hyphens in a string with REGEX. Let's say we have a string "This_is_test_string" and we want to replace underscores with hyphens ...

Regex: Get number only from a string

In this blog I will show how to get number only from a string with REGEX. Let's say we have a string "Hello 123456789 user 456 welcome." and we want the output to be "123456789456&q...

Regex: Allow alphanumeric characters only

In this blog I will show how to validate a string to allow alphanumeric characters only in a string with REGEX. Below is the sample code to do the same: using System; using System.Text.RegularExpressi...

Regex: Remove all non numeric characters from a string

In this blog I will show how to remove all non numeric characters from a string with REGEX. Let's say we have a string "(912)-555-7777" and remove all non numeric characters so that the ...

Regex: Remove all non alpha numeric characters from a string

In this blog I will show how to remove all non alpha numeric characters from a string with REGEX. Let's say we have a string "Hello!@#$123456789~~-_user456welcome" and remove all non alp...

Regex: Reverse all numbers in string

In this blog I will show how to reverse all numbers in string with REGEX. Let's say we have a string "Hello 123456789 user 456 welcome." and we want to reverse it like "Hello 987654...

Regex: Can not access non-static method Replace in static context

I encountered a piece of code where regex replacement was done in the following way: Regex.Replace(@"\d+", m => new string(m.Value.Reverse().ToArray())); It was giving the following e...

Regex: Replace multiple spaces with a single space

In this blog I will show how to replace multiple spaces with a single space with REGEX. Let's say we have a string "a b c d e f g" and we want to replace multiple spaces with a single sp...

Regex: Match a string not containing a word

Let's say we have a string and we want to match that string not containing a word say alpha . I have used Regex class in order to do so

RegEx: Quantifier {x,y} following nothing error

While parsing one of my regex pattern based on input data I was getting the following error: RegEx: Quantifier {x,y} following nothing error I was having the following code: string pattern = string.Fo...

Regex: How to replace everything which is not alphanumeric

Regex: Greedy VS Lazy

Regex: Find text between two characters

Regex: Replace multiple blank spaces with a single space

Regex: Match a string contains which contains all of the words from a particular set of words

Regex: Match a string contains which contains any of the word from a particular set of words

Check if a number has repeated digits with regular expression

How to match exact word in a string

How to check with regex if a particular sequence exists at the last of a string

Escaping single quote with regex

Regular Expression For Email with jQuery