Find Word In String Regex C#

31 May, 2021

String value string Empty. The b is a word boundary check and used like above it will be able to match whole words only.

How To Find The Second Word In A String Stack Overflow

String searchTerm Prostate Specific Antigen.

Find word in string regex c#. Bool contains RegexIsMatch Hello1 Hello2 bHellob. String parts tempSplit. ConsoleWriteLine The last index of the word word.

I have to remove common words from a table in c which have arround 2 lacs records. In c regular expression regex is a pattern and it is useful to parse and validate whether the given input text is matching the defined pattern such as an email address or not. Sign in to vote.

Define the regular expression pattern. For that i list out all the words and there occurance in every row. Pattern RegexEscapenfiPositiveSign nfiNegativeSign s.

The Regex class is available with SystemTextRegularExpressions namespace. Int first textIndexOf word. Dim exp As Regex New Regexpattern For Each inputLine As String In input Dim nMatch As Match expMatchinputLine For Each capt As Capture In nMatchGroupsWordCaptures ConsoleWriteLineThe word is.

Int pos textIndexOf searchTerm. In the example we find the first and last occurrence of the is word. Searches the input string for the first occurrence of a regular expression beginning at the specified starting position in the string.

Var pattern b searchString b. Get the positive and negative sign symbols. Just remove the second in the first b.

This is just an example if there were more than one set of quotations in your. U can use a regular expression like so. Value parts 0.

Yields false bool contains RegexIsMatch Hello1 Hello bHellob. If pos 0 string temp textSubstring pos searchTermLengthTrim. Generally the key part to process the text with regular expressions is the regular expression engine and it is represented by Regex class in c.

SystemTextRegularExpressionsMatch Match SystemString input int startat. 0 captValue Next capt Next inputLine End Sub End Module. Var text hello this is world something else.

Besides regular expressions you could also use a SubString. The sun is shining. Var result textSubstringstart end.

Pattern RegexEscapenfiCurrencySymbol s. Private int FindVowelsWithLinq String inputString. String text Prostate Specific Antigen 12 NA NA.

ConsoleWriteLine The first index of the word word. Age yrs up to 49 50 - 59 60 - 69 over. Get the currency symbol.

Note that in case you have special regex metacharacters like etc in your searchStrings you can use RegexEscapeto escape them. Return inputStringToLower Count c vowelsContains c. SystemTextRegularExpressionsMatchCollection Matches SystemString input.

After i remove words. NumberFormatInfo nfi NumberFormatInfoCurrentInfo. Var pattern b RegexEscapesearchString b.

Public SystemTextRegularExpressionsMatchCollection Matches string input. Var word is. Var vowels new List a e i o u.

Int last textLastIndexOf word. Var start textIndexOf 1add one to not include quote var end textLastIndexOf - start. Matches String Searches the specified input string for all occurrences of a regular expression.

Public SystemTextRegularExpressionsMatch Match string input int startat. If inputString null return 0. We again use the list of vowels just like in the first solution.

C Regex Match Examples Regular Expressions Dot Net Perls