c# – 在向用户显示后立即删除动态生成的PDF文件

将PDF文件直接写入客户端：

public class MyHandler : IHttpHandler {
    public void ProcessRequest(System.Web.HttpContext context) {
        context.Response.ContentType = "application/pdf";
        // ...
        PdfWriter.getInstance(document,context.Response.OutputStream);
        // ...

或读取已生成的文件’filename’,提供文件,删除它：

context.Response.Buffer = false;
context.Response.BufferOutput = false;
context.Response.ContentType = "application/pdf";

Stream outstream = context.Response.OutputStream;
FileStream instream = 
    new FileStream(filename,FileMode.Open,FileAccess.Read,FileShare.Read);

byte[] buffer = new byte[BUFFER_SIZE];
int len;
while ((len = instream.Read(buffer,BUFFER_SIZE)) > 0) {
    outstream.Write(buffer,len);
}
outstream.Flush();
instream.Close();

// served the file -> now delete it 
File.Delete(filename);

我没试过这段代码.这就是我认为它会起作用的方式……