The following PopulateCsvIntoArray method used to read the CSV file into a two-dimensional array of strings. I have included explanation of method lines, wherever needed. /// <summary> /// Populate the CSV file into an array, /// We assume that every line has the same number of fields and there may be blank lines. /// </summary> /// <returns></returns> private string [,] PopulateCsvIntoArray() { // Get path of CSV file. var path = Server.MapPath( "~/Folder_Name/testfile.csv" ); // Get the file's text using ReadAllText method. string fileData = System.IO. File .ReadAllText(path); // Split CSV data into lines. fileData = fileData.Replace( '\n' , '\r' ); string [] lines = fileData.Split( new char [] { '\r' }, StringSplitOptions .RemoveEmptyEntries); // Get rows and columns counts. int totalRows = lines.Length;