I have made my custom In extension method as shown below:
public static class ExtensionMethods
{
public static bool In(this string str, IEnumerable<String> list)
{
foreach (var s in list)
{
if (s.Equals(str)) return true;
}
return false;
}
}
And now I like to use it with my LINQ query. What can I do and how do I use it?
I think your method is very similar to Enumerable.Contains. Perhaps you could just use that instead.
If you really want to use your method then it will work fine in a LINQ to Objects query, but it won't be possible to use it in a database query.
You should be able to say
if (stringName.In(listVariableName)){....}
unless the class ExtensionMethods is on a different namespace.
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