Console.WriteLine输入无效，因此显示错误

Question

我正在使用设置了以下所示代码的Visual Studio。输入两条路径后，将显示一条消息，说明现在将生成报告，其余脚本（以下未显示）将运行并生成工作簿。但是，如果输入的文件夹路径无效，Visual Studios会在“不存在”中进行同样的说明。我要发生的事情是，如果指定的路径存在，则弹出消息说它将像现在一样生成，并且作为控制台应用程序的一部分，因为它显示类似“路径无效，请再试一次”

Console.Write("Please enter the source path for the Checks Workbook, including the name of the file (Not including the file extension): ");
string checksPath;
checksPath = Console.ReadLine()+".xlsx";

Console.Write("Please enter the folder location you wish your report to go to (Not including the file extension): ");
string reportDest;
reportDest = Console.ReadLine()+".xlsx";

Console.WriteLine("Your report will now produce");

Answer 1

您可以检查文件是否存在using System.IO.File.Exists("path")

Answer 2

这似乎可行：

                Console.Write("Please enter the folder location you wish your report to go to (Not including the file extension): ");
            string reportDest;
            reportDest = Console.ReadLine() + ".xlsx";
            Console.WriteLine(File.Exists(reportDest) ? "Your report will now produce" : "Path does not exist - please try again");