我正在使用此功能将报告写入 pdf 文件并将其作为电子邮件附件发送。
string strNovaQueryString = string.Empty;
string pathFile = "";
string[] fields;
string[] values;
fields = ParamRelatorio.Split('|');
foreach (string key in fields)
{
string[] param= key.Split(new char[] { '=' });
strNovaQueryString += param[0] + "=" + param[1] + "&";
}
if (!string.IsNullOrEmpty(strNovaQueryString))
strNovaQueryString = strNovaQueryString.TrimEnd('&');
string url = reportURL + "/ViewReport.aspx?" + strNovaQueryString;
string userName = user;
string password = pass;
string strPostData = String.Format("user={0}&pass={1}", userName, password);
byte[] postData = Encoding.ASCII.GetBytes(strPostData);
System.Net.HttpWebRequest req = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(url);
req.ContentType = "application/x-www-form-urlencoded";
req.Method = "POST";
req.ContentLength = postData.Length;
System.IO.Stream outputStream = req.GetRequestStream();
outputStream.Write(postData, 0, postData.Length);
outputStream.Close();
System.Net.HttpWebResponse rep = (System.Net.HttpWebResponse)req.GetResponse();
System.IO.Stream str = rep.GetResponseStream();
string contentType = rep.ContentType;
string fileType = "";
if (contentType != null)
{
string[] splitString = contentType.Split(';');
fileType = splitString[0];
}
if (fileType != null && fileType.ToLower() == "application/pdf")
{
byte[] buffer = new byte[8192];
int bytesRead = str.Read(buffer, 0, 8192);
while (bytesRead > 0)
{
byte[] buffer2 = new byte[bytesRead];
System.Buffer.BlockCopy(buffer, 0, buffer2, 0, bytesRead);
pathFile = attPath+ "reportName" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".pdf";
BinaryWriter binaryWriter = new BinaryWriter(File.Open(pathFile, FileMode.Create));
binaryWriter.Write(buffer2);
binaryWriter.Close();
bytesRead = str.Read(buffer, 0, 8192);
}
}
return pathFile;
它正在我想要的路径中保存一个 pdf 文件（类似于“C://Documents//Att”），但 pdf 文件是空的。正在发送电子邮件，但 pdf 为空。我认为这binaryWriter.Write(bytesRead);没有按预期工作，或者变量为空。
有什么建议么？