Regular Expressions 101

Positive Lookbehind(?<=(azureStorage)...................................................AccountName=)

Group 1(azureStorage)

azureStoragethe literal text azureStorage (case sensitive)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

.any character (except for line terminators)

AccountName=the literal text AccountName= (case sensitive)

.any character (except for line terminators)

Negated Character Class[^;]*

*matches any number of characters outside the set below:

;the literal ; (59₁₀ / 73₈ / 3B₁₆)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

(?<=(azureStorage)...................................................AccountName=).[^;]*

New

<add name="azureStorage" connectionString="DefaultEndpointsProtocol=https;AccountName=mystorage;AccountKey=myKey" />