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Actually the question is confusing.<br />
First it says result, as you say, is a List&lt;string&gt; then it shows that result is a string, not a List&lt;string&gt; at all.
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Use the String.Replace function
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Hi,<br />
<br />
I am using string which contains some values.<br />
<br />
List&lt;string&gt; result = new List&lt;string&gt;();<br />
<br />
result = &quot;A1-B1-C1-D1-_F1&quot;;<br />
<br />
when symbol &quot;-_&quot; found in the result string then it should take only or consider &quot;_&quot;.<br />
<br />
So the final string would be &quot;A1-B1-C1-D1_F1&quot; <br />
<br />
How to replace...
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Hi,

I am using string which contains some values.

List<string> result = new List<string>();

result = "A1-B1-C1-D1-_F1";

when symbol "-_" found in the result string then it should take only or consider "_".

So the final string would be "A1-B1-C1-D1_F1" 

How to replace...

How to remove the particular symbol in a string

C# is an object-oriented programming language created in conjunction with Microsoft’s .NET framework. Compilation is usually done into the Microsoft Intermediate Language (MSIL), which is then JIT-compiled to native code (and cached) during execution in the Common Language Runtime (CLR).

Language Integrated Query (LINQ) is a Microsoft .NET Framework component that adds native data querying capabilities to .NET languages, although ports exist for Java, PHP, JavaScript and ActionScript. LINQ extends the language by the addition of query expressions, which are akin to SQL statements, and can be used to conveniently extract and process data from arrays, enumerable classes, XML documents, relational databases, and third-party data sources.