Dictionary & lt; T1,T2＆gt; Sorting problem

//VoltageCount class ( Quantity corresponding to voltage value )：
    public class VoltageCount
    {
        public Double Voltage { get; set; } // Voltage value
        public int CountV { get; set; } // Quantity corresponding to voltage value
        public VoltageCount()
        {
        }

        public VoltageCount(Double voltage, int countV)
        {
            this.Voltage = voltage;
            this.CountV = countV;
        }
    }

Dictionary<Point, VoltageCount> Is the coordinate point （ Use... When drawing images ） And VoltageCount The dictionary corresponding to the data , The purpose is to draw objects (Graphics) Draw the voltage value in - Number of corresponding images （ As shown in the right part of the figure ）.

Because you need to sort by quantity and size at the same time , In order to output the table （ As shown in the left two tables , In descending order of quantity ）, So here comes the problem of dictionary sorting .

            Dictionary<Point, VoltageCount> result = new Dictionary<Point, VoltageCount>();

                for (int i = 0; i <= 4; i++)
                {
                    result.Add(listHeatPoints[i], dictionaryPointVoltageCount[listHeatPoints[i]]);

                }

// Sort

            Dictionary<Point, VoltageCount> dicSort = result. OrderByDescending(s => s.Value.CountV)

                .ToDictionary(pair => pair.Key, pair => pair.Value);