C写入输出流

此代码将始终使我的ASPX页面加载两次。这与autoeventwireup无关。

Response.Clear();
Response.ContentType = "application/pdf";
Response.AppendHeader("Content-Disposition", "inline;filename=data.pdf");
Response.BufferOutput = true;
byte[] response = GetDocument(doclocation);
Response.AddHeader("Content-Length", response.Length.ToString());
Response.BinaryWrite(response);
Response.End();

当我硬编码一些虚拟值时,此代码只会使我的页面加载一次(应该如此)。

Response.Clear();
Response.ContentType = "application/pdf";
Response.AppendHeader("Content-Disposition", "inline;filename=data.pdf");
Response.BufferOutput = true;
byte[] response = new byte[] {10,11,12,13};
Response.AddHeader("Content-Length", response.Length.ToString());
Response.BinaryWrite(response);
Response.End();

我还增加了web.config文件中良好度量的请求长度。

<httpRuntime executionTimeout="180" maxRequestLength="400000"/>

什么也没有。有人看到我没有的东西吗?