C# : Cannot implicitly convert type 'System.Collections.IList' to 'System.Collections.Generic.List

C# : Cannot implicitly convert type 'System.Collections.IList' to 'System.Collections.Generic.List
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C# : Cannot implicitly convert type 'System.Collections.IList' to 'System.Collections.Generic.List
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'System.Collections.Generic.List 'System.Collections.IList' type convert to implicitly : Cannot C#