How can I custom sort a keyvaluepare list in C#?

Question

I want to apply custom sort to myList after converting New_RNR_PathDic of Dictionary<string, string> type to List<KeyValuePair<string, string>> myList.
Below is my code, myList.Sort(new Sort_CSVDate()); The code could not be executed because an error occurred at this line. Is there something wrong with my code?

List<KeyValuePair<string, string>> myList = New_RNR_PathDic.ToList();  
myList.Sort(new Sort_CSVDate());        //Error : cannot conver to 'System.Collections.Generic.IComparer  
  
  
public class Sort_CSVDate : IComparer<object>  
    {  
        public int Compare(object x, object y)  
        {  
            //KeyValuePair<string, string>  
            var x1 = (KeyValuePair<string, string>)x;  
            var y1 = (KeyValuePair<string, string>)y;  
  
            var x2 = x1.Value;  
            var y2 = y1.Value;  
  
            var cast_x = x1.ToString().Substring(x1.ToString().IndexOf("-") + 1, x1.ToString().Length - x1.ToString().IndexOf("-") - 1).Replace(".csv", "");   
            var cast_y = y1.ToString().Substring(y1.ToString().IndexOf("-") + 1, y1.ToString().Length - y1.ToString().IndexOf("-") - 1).Replace(".csv", "");  
  
            DateTime date_x = DateTime.ParseExact(cast_x, "dd-MMM-yyyy HH.mm.ss", CultureInfo.InvariantCulture);  
            DateTime date_y = DateTime.ParseExact(cast_y, "dd-MMM-yyyy HH.mm.ss", CultureInfo.InvariantCulture);  
  
            return date_x.CompareTo(date_y);  
        }  
    }  

Answer 1

To fix the compilation error, try this definition: public class Sort_CSVDate : IComparer<KeyValuePair<string, string>>.