如何在C＃中編寫文件？

Question

string attachment = "attachment; filename=Myfile.csv"; 
HttpContext.Current.Response.Clear(); 
HttpContext.Current.Response.ClearHeaders(); 
HttpContext.Current.Response.ClearContent(); 
HttpContext.Current.Response.AddHeader("content-disposition", attachment); 
HttpContext.Current.Response.ContentType = "text/csv"; 
HttpContext.Current.Response.AddHeader("Pragma", "public"); 

// My logic goes here to write file. 

// Now I want to copy above file to another file. 

string filepath = Server.MapPath("~/ExportedFiles/") +"Newfile.csv"; 
var ExcelFile = File.Create(filepath); 
ExcelFile.Close(); 
HttpContext.Current.Response.TransmitFile(filepath); 
HttpContext.Current.Response.Flush(); 

上述代碼無法正常工作，請給我建議。謝謝。

Answer 1

您需要在您的IIS上創建虛擬目錄並共享該虛擬目錄目錄。您的csv應駐留在您的虛擬目錄共享位置。這裏是引用的文章：http://www.codeproject.com/Tips/502741/A-solution-to-problem-Response-TransmitFile

Answer 2

使用代碼波紋管而不是：var ExcelFile = File.Create（filepath）;在C＃中使用 WriteAllLines指令來創建文件或更改內容文件

File.WriteAllLines(filepath, data);