我有我的aspx页面，一些逻辑用后面的代码编写来绑定aspx pages的数据。现在使用wkhtmltopdf我发送这些文件转换成pdf文件。当数据量较小时，它工作得很好但是，当该页面的数据较大时，wkhtmltopdf会停止工作并且不会创建任何pdf文件。
你能否提出任何方法来克服这个问题。我尝试的是限制数据..例如我在我的页面上有转发器控件如果控件绑定350记录我只记录20条记录，但如果这20条记录的大小很大，它也会发生相同的
我尝试的下一个选项是我在
中给出参数处理myProcess = Process.Start（startInfo）; myProcess.WaitForExit（几秒钟）;
但它仍然无效
请建议
答案 0 :(得分：0)
Process myProcess = Process.Start(startInfo);
string error = myProcess.StandardError.ReadToEnd();
myProcess.WaitForExit();
myProcess.Close();
objZip.AddFile(destinationFile, "Files");
myProcess.Dispose();
myProcess = null;
这是答案=＆gt;会发生什么事情，当你开始进程，并等待exit（）都会创建一个死锁时间，这会破坏性能......通过在waitforexit（）之前添加readtoend（）方法来清除死锁然后继续进一步处理......
这解决了我的问题。
答案 1 :(得分：0)
我展示完整解决方案的原因是，wkhtmltopdf非常适合创建动态pdf文件，但这也是免费工具，因此对此文档非常有限..
private void ProcessHtmlToPdf（List lstExportToPdfCategories） { 尝试 { string pdfExportPath = string.Empty; string PDFdeletePath = string.Empty; string deletePath = string.Empty; string PdfSavePath = string.Empty;
if (lstExportToPdfCategories != null)
{
foreach (var item in lstExportToPdfCategories)
{
path = "";
pdfExportPath = profile + ApConfig.CurrentCompany.CompId + "/" + objExpDetails.AddedForId.ToString() + "/" + item.HeaderCategory;
PDFdeletePath = profile + ApConfig.CurrentCompany.CompId + "/" + objExpDetails.AddedForId.ToString();
PdfSavePath = profile + ApConfig.CurrentCompany.CompId + "/" + objExpDetails.AddedForId.ToString() + "/" + item.HeaderCategory;
htmlpath = profile + ApConfig.CurrentCompany.CompId + "/" + objExpDetails.AddedForId.ToString() + "/" + item.HeaderCategory;
deletePath = Server.MapPath(PDFdeletePath);
string ClearDirectory = Server.MapPath(PdfSavePath);
if (Directory.Exists(deletePath))
{
//Directory.Delete(ClearDirectory, true);
//Directory.Delete(deletePath, true);
}
if (!Directory.Exists(Server.MapPath(pdfExportPath)))
{
Directory.CreateDirectory(Server.MapPath(pdfExportPath));
}
string name =
pdfExportPath = pdfExportPath + "/" + objExpDetails.FirstName + "." + objExpDetails.LastName + "-" + item.HeaderCategory + "_" + (drpYear.SelectedValue != "0" ? Convert.ToString(drpYear.SelectedValue) : System.DateTime.Now.Year.ToString()) + ".pdf";
objpath = Server.MapPath(pdfExportPath);
//this will create html mockup
//item.WebsiteUrl = CreateTemportHtmlFile(item.HeaderCategory, PdfSavePath, item.WebsiteUrl);
if (path == "")
{
path = CreateTemportHtmlFile(PdfSavePath, item.HeaderCategory);
}
HtmlToPdf(item.WebsiteUrl, objpath, path);
}
Response.Clear();
Response.AddHeader("Content-Disposition", "attachment; filename=" + objExpDetails.FirstName + "." + objExpDetails.LastName + "-actusdocs.zip");
Response.ContentType = "application/zip";
objZip.Save(Response.OutputStream);
Response.End();
}
}
catch (Exception ex)
{
//SendEmail.SendErrorMail("ProcessHtmlToPdf method : ", ex.Message + ex.StackTrace, objExpDetails);
}
}
//Method overloading
//this is for testing html pages(not in used during main running)
private string CreateTemportHtmlFile(string categoryName, string htmlMockupSavingPath, string websiteURL)
{
try
{
string sessionId = Session.SessionID;
int employeeId = Convert.ToInt32(hdnEmployeeId.Value);
htmlMockupSavingPath = Server.MapPath(htmlMockupSavingPath) + "\\" + categoryName + ".html";
StreamWriter sw;
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(websiteURL);
myRequest.Method = "GET";
WebResponse myResponse = myRequest.GetResponse();
StreamReader sr = new StreamReader(myResponse.GetResponseStream(), System.Text.Encoding.UTF8);
string result = sr.ReadToEnd();
sw = File.CreateText(htmlMockupSavingPath);
sw.WriteLine(result);
sw.Close();
Response.WriteFile(htmlMockupSavingPath);
}
catch (Exception ex)
{
SendEmail.SendErrorMail("CreateTemportHtmlFile method : ", ex.Message + ex.StackTrace, objExpDetails);
}
return htmlMockupSavingPath;
}
private string CreateTemportHtmlFile(string PdfSavePath, string categoryName)
{
try
{
string sessionId = Session.SessionID;
int employeeId = Convert.ToInt32(hdnEmployeeId.Value);
PdfSavePath = Server.MapPath(PdfSavePath) + "\\BindHeader.html";
htmlpath = htmlpath.Substring(1);
htmlpath = ConfigurationManager.AppSettings["pdfUrlPath"].ToString() + htmlpath + "/BindHeader.html";
string exportedYear = (drpYear.SelectedValue == "0" ? System.DateTime.Now.Year.ToString() : drpYear.SelectedValue);
StreamWriter sw;
if (categoryName == "MidYearAppraisal" || categoryName == "EndYearAppraisal")
{
myRequest = (HttpWebRequest)WebRequest.Create(ConfigurationManager.AppSettings["pdfUrlPath"] + "/User/UserPdfReports/UserPdfHeaderforAppraisal.aspx?session=" + sessionId + "&empId=" + employeeId + "&catName=" + categoryName + "&expYear=" + exportedYear);
}
else
{
myRequest = (HttpWebRequest)WebRequest.Create(ConfigurationManager.AppSettings["pdfUrlPath"] + "/User/UserPdfReports/UserPdfHeader.aspx?session=" + sessionId + "&empId=" + employeeId + "&catName=" + categoryName + "&expYear=" + exportedYear);
}
myRequest.Method = "GET";
WebResponse myResponse = myRequest.GetResponse();
StreamReader sr = new StreamReader(myResponse.GetResponseStream(), System.Text.Encoding.UTF8);
string result = sr.ReadToEnd();
sw = File.CreateText(PdfSavePath);
sw.WriteLine(result);
sw.Close();
Response.WriteFile(PdfSavePath);
}
catch (Exception ex)
{
SendEmail.SendErrorMail("CreateTemportHtmlFile method : ", ex.Message + ex.StackTrace, objExpDetails);
}
return htmlpath;
}
private void HtmlToPdf(string website, string destinationFile, string path)
{
try
{
string hrmlPath = ConfigurationManager.AppSettings["pdfUrlPath"].ToString() + "/user/UserPdfReports/FooterPdfReports.html";
ProcessStartInfo startInfo = new ProcessStartInfo();
string switches = "";
switches += "--header-html " + path + " --footer-html " + hrmlPath;
startInfo.UseShellExecute = false;
startInfo.RedirectStandardOutput = true;
startInfo.RedirectStandardInput = true;
startInfo.RedirectStandardError = true;
startInfo.CreateNoWindow = true;
startInfo.FileName = "C:\\Program Files\\wkhtmltopdf\\bin\\wkhtmltopdf.exe";
startInfo.Arguments = switches + " " + website + " " + destinationFile;
Process myProcess = Process.Start(startInfo);
string error = myProcess.StandardError.ReadToEnd();
myProcess.WaitForExit();
myProcess.Close();
objZip.AddFile(destinationFile, "Files");
myProcess.Dispose();
myProcess = null;
}
catch (Exception ex)
{
//SendEmail.SendErrorMail("HtmlToPdf : ", ex.Message + ex.StackTrace, objExpDetails);
}
}