How do I replace a Pattern with string present in pattern itself.

Question

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If the user inputs <get property = "name"> so I want it to be replaced with the value of key "name" present in properties dictionary.

VB

templete = Regex.Replace(templete, "<get property = ""(.*)"">", ?)

What can I write in place of ? in the above code so that the <get> tag will be replaced by the value of dictionary where key is the value of property attribute.

Example
1. If the tag is <get property = "name"> so it should be replaced with dictionary("name").
2. If the tag is <get property = "age"> so it should be replaced with dictionary("age").

Posted 22-Dec-15 7:34am

Irfan Project

Updated 22-Dec-15 7:35am

v2

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Comments

Sergey Alexandrovich Kryukov 22-Dec-15 13:46pm

I don't see what prevents you from doing exactly that. You need to parse your string. You can parse it into regular expression, key, and the rest. It's just some programming, nothing which you don't know.

What have you tried so far?

However, I don't think your idea is practical. I would suggest to design something better. Unfortunately, you did not explain your ultimate goals.

—SA

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OriginalGriff · Answer 1 · 2015-12-22T08:14:00

Solution 1

Try:

VB

Public Shared ReplaceName As New Regex("<get property = ""(?<Name>.*)"">")
...
Dim result As String = ReplaceName.Replace("<get property = ""John Smith"">", "dictionary(""${Name}"")")

Posted 22-Dec-15 8:14am

OriginalGriff

Comments

Irfan Project 22-Dec-15 15:23pm

Thanks OriginalGriff for your solution.. But still there is one problem

I want to pass the <name> value to dictionary as you did using ${Name} to retrieve the value of <name>. But while using it as a key in dictionary I am getting KeyNotFoundException.

This is because it is direcly passing "${Name}" as String rather than "John Smith" to dictionary..

So is there any solution to pass "John Smith" to other function rather than "${Name}"