Read key using LINQ in C#

Question

1.00/5 (1 vote)

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<environments>
<environment>
<add key="Test1">
<add key="Test2">
<add key="Test3">

how to read all keys using LINQ in C#

What I have tried:

C#

XElement root = new XElement("Root",  
                    new XAttribute("Attr", "abcde")  
                );  
Console.WriteLine(root);  
string str = (string)root.Attribute("Attr");  
Console.WriteLine(str);

Posted 16-Jul-19 0:28am

Amit Patel1985

Updated 16-Jul-19 3:31am

Herman<T>.Instance

v2

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Richard MacCutchan · Answer 1 · 2019-07-16T03:31:00

Solution 1

LINQ to XML Overview (C#) | Microsoft Docs[^].

Posted 16-Jul-19 3:31am

Richard MacCutchan

Comments

Amit Patel1985 16-Jul-19 10:22am

Hello Richard,

tried this I am not able to solve using above xml example.
tried below code

IEnumerable<string> partNos = from item in configuratoinFile.Descendants("EnvironmentDetails")
select (string)item.Attribute("add");

Thanks,
amit

Richard Deeming 16-Jul-19 13:54pm

Based on your sample XML (which isn't valid XML, so I'm guessing here), add is an element, not an attribute.

Try:

from item in configurationFile.Descendants("environment").Descendants("add")
select (string)item.Attribute("key");