HomeCSharpC# Error CS1739 – The best overload for ‘{0}’ does not have a parameter named ‘{1}’

C# Error CS1739 – The best overload for ‘{0}’ does not have a parameter named ‘{1}’

C# Error

CS1739 – The best overload for ‘{0}’ does not have a parameter named ‘{1}’

Reason for the Error & Solution

The best overload for does not have a parameter named

Example

The following sample generates CS1739:

// CS1739.cs (11,31)
using System;

public class A
{
    public int this[Range range] => 42;
}
public class C
{
    public static void Main()
    {
        Console.Write(new A()[param: 1..^1]);
    }
}

To correct this error

Use the name of the parameter as it is declared in the member to correct this error.

    public static void Main()
    {
        Console.Write(new A()[range: 1..^1]);
    }

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