C#获取指定目录下指定文件的方法

1.首先，需要指定获取的文件夹，以及获取文件的文件名;

文件夹：strLocalPath = System.Windows.Forms.Application.StartupPath + "\\ExcelTemplate\\";

文件名：temp.xlsx

2.代码：

ExecutionResult result = new ExecutionResult();
result.Status = true;
string strLocalPath = System.Windows.Forms.Application.StartupPath + "\\ExcelTemplate\\";
if (Directory.Exists(strLocalPath))
{
foreach (string GCFile in Directory.GetFiles(strLocalPath, "temp.xlsx", SearchOption.TopDirectoryOnly))
   {
  string fileName = Path.GetFileName(GCFile);
  string filename = Path.GetFileName(GCFile).Replace(".xlsx", "") + DateTime.Now.ToString("_yyyyMMdd") + ".xlsx";
       try
        {
       File.Copy(strLocalPath + fileName, strLocalPath + "Temp\\" + filename, true);
       result = GetA31DayData(strLocalPath + "Temp\\" + filename);
        }
     catch (Exception ex)
         {
        result.Status = false;
        result.Message = "copy file to destination file exception. Msg:" + ex.Message;
        result.Anything = ex.Message;
  if (mesLog.IsErrorEnabled)
  {
mesLog.Error(ex.StackTrace);
   }
       }
          }
    }
 else
{
result.Status = false;
result.Message = "Directory not exists!";
 }
   return result;

来源：https://www.cnblogs.com/wml-it/p/12738117.html