C# 带Silverlight的EPPlus

我正在用EPPlus库创建一个excel文件，我想将其下载到客户端

下面是一个EPPlus示例

ExcelPackage pck = new ExcelPackage();
var ws = pck.Workbook.Worksheets.Add("Sample1");

ws.Cells["A1"].Value = "Sample 1";
ws.Cells["A1"].Style.Font.Bold = true;
var shape = ws.Drawings.AddShape("Shape1", eShapeStyle.Rect);
shape.SetPosition(50, 200);
shape.SetSize(200, 100);
shape.Text = "Sample 1 saves to the Response.OutputStream";

pck.SaveAs(HttpContext.Current.Response.OutputStream);
HttpContext.Current.Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
HttpContext.Current.Response.AddHeader("content-disposition", "attachment;  filename=Sample1.xlsx");

此代码创建xls文件，并允许从aspx页面将其下载到客户端。 我试图从my.aspx页面请求具有“HttpWebRequest”类的xls文件，但我收到一个错误，该错误表示“由于对象的当前状态，操作无效”

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如何将此xls文件从服务器下载到客户端

可能最好使用

BinaryWrite

。我是这样做的：

HttpContext.Current.Response.Clear(); 
HttpContext.Current.Response.Buffer = true;
HttpContext.Current.Response.Charset = "";
HttpContext.Current.Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
HttpContext.Current.Response.AddHeader("content-disposition", "attachment;filename=myfilename.xlsx");
HttpContext.Current.Response.AddHeader("Cache-Control", "must-revalidate, post-check=0, pre-check=0");
HttpContext.Current.Response.BinaryWrite(pck.GetAsByteArray());
HttpContext.Current.Response.Flush();