how to load a CSV value from a text file with the column head into a datagridview using c#

LoadCSV.cs

 public static string[,] LoadCsv(string filename)
        {
            //get the file text
            string text = System.IO.File.ReadAllText(filename);
            
            //split into Lines
            text = text.Replace("\n", "\r");
            string[] lines = text.Split(new char[] { '\r' }, StringSplitOptions.RemoveEmptyEntries);

            // to get how many rows and columns
            int rows = lines.Length;
            int cols = lines[0].Split(',').Length;

            // Allocate the data array.
            string[,] values = new string[rows, cols];

            //load the array
            for(int row = 0; row < rows; row++)
            {
                string[] line = lines[row].Split(',');
                for(int col = 0; col < cols; col++)
                {
                    values[row, col] = line[col];
                }
            }

            return values;
        }

        private void loadTextFileWithColumnHead(string filepath) 
        {
            //get the data
            string[,] values = LoadCsv(filepath);
            int numRows = values.GetUpperBound(0) + 1;
            int numCloumns = values.GetUpperBound(1) + 1;

            ispaly the data 
            dgvValues.Columns.Clear();
            for(int c = 0; c < num_cols; c++)
               dgvValues.Columns.Add(values[0, c], values[0, c]);

            // Add the data.
            for(int r = 1; r < num_rows; r++)
            {
                dgvValues.Rows.Add();
                for(int c = 0; c < num_cols; c++)
                {
                    dgvValues.Rows[r - 1].Cells[c].Value = values[r, c];
                }
            }

        }