什么是System.FormatException以及如何解决它？

Question

我正在为我的课程编写程序，并且我一直收到此错误：

  

System.FormatException（从零开始）必须大于或等于零且小于参数列表的大小。

// Read output to user
Console.WriteLine("               Packing Slip               ");
Console.WriteLine("----------------------------------------");
Console.WriteLine(totalRoomArea + "{0,-30}{1,10:C}", " ft. Wall Area :");
Console.WriteLine(ceilingArea + "{0,-30}{1,10:C}", "ft. Ceiling Area :");
Console.WriteLine(amountOfPaintRequired + "{0,-30}{1,10:C}","gallon(s) " + paintTypeChoice + "      " + "@" + paintPrice + "  =" + paintFinalPrice );
Console.WriteLine(amountOfFlooringRequired + "{0,-30}{1,10:C}", "ft." + flooringTypeChoice + "      " + "@" + flooringPrice + " =" + flooringFinalPrice);
Console.WriteLine(amountOfCasing + "{0,-30}{1,10:C}", "ft. of casing" + "       " + "@" + casingPrice + "=" + casingFinalPrice);
Console.WriteLine(amountOfBaseboardRequired + "{0,-30}{1,10:C}", "ft. of baseboard" + "     " + baseboardPrice + "=" + baseboardFinalPrice);
Console.WriteLine("============================================================================================================");
Console.WriteLine("{0,-30}{1,10:C}", "Net Total" + "      " + "=" + netTotal);
Console.WriteLine("{0,-30}{1,10:C}", "GST" + "      " + "=" + gst);
Console.WriteLine("----------------------------------------");
Console.WriteLine("{0,-30}{1,10:C}", "Total" + "        " + "=" + total);
Console.WriteLine("    Press any key to exit... ");
Console.ReadLine();    

Answer 1

您正在使用Console.WriteLine中的字符串格式化程序，例如{0}，但您没有为此传递任何参数。

你应该像

一样使用它们

string.Format("Hello {0}", PersonName);