I have a web application developed in ASP.NET. I am using rdlc to do the reporting. Everything seems to work fine on my development machine, but not when I upload the application to the hosting service (GoDaddy.com). The reports show up as preview (ReportViewer Control). But when I click on Print it is not showing the preview.
public void print()
{
try
{
Warning[] warnings;
string[] streamids;
string mimeType;
string encoding;
string extension;
byte[] bytes = ReportViewer1.LocalReport.Render("PDF", null, out mimeType, out encoding, out extension, out streamids, out warnings);
FileStream fs = new FileStream(HttpContext.Current.Server.MapPath("output.pdf"), FileMode.Create);
fs.Write(bytes, 0, bytes.Length);
fs.Close();
//Open exsisting pdf
Document document = new Document(PageSize.A4);
PdfReader reader = new PdfReader(HttpContext.Current.Server.MapPath("output.pdf"));
//Getting a instance of new pdf wrtiter
PdfWriter writer = PdfWriter.GetInstance(document, new FileStream(HttpContext.Current.Server.MapPath("Print.pdf"), FileMode.Create));
document.Open();
PdfContentByte cb = writer.DirectContent;
int i = 0;
int p = 0;
int n = reader.NumberOfPages;
Rectangle psize = reader.GetPageSize(1);
float width = psize.Width;
float height = psize.Height;
//Add Page to new document
while (i < n)
{
document.NewPage();
p++;
i++;
PdfImportedPage page1 = writer.GetImportedPage(reader, i);
cb.AddTemplate(page1, 0, 0);
}
//Attach javascript to the document
PdfAction jAction = PdfAction.JavaScript("this.print(true);\r", writer);
writer.AddJavaScript(jAction);
document.Close();
//Attach pdf to the iframe
frmPrint.Attributes["src"] = "Print.pdf";
}
catch (Exception ex)
{
Response.Write("<script>alert('Error Occured')</script>");
}
}
I am using the above code for print..
Related
I am getting the following error when trying to upload video to Facebook from my web application:
"(OAuthException - #352) (#352) Sorry, the video file you selected is in a format that we don't support"
public void uploadVideoToFaceBook(string accessToken, string videoURL, string videoTitle)
{
byte[] stream = DownloadVideoAsByte(videoURL);
var mediaObject = new FacebookMediaObject
{
FileName = videoTitle,
ContentType = "video/mp4"
};
mediaObject.SetValue(stream);
try
{
var fb = new FacebookClient(accessToken);
dynamic result = fb.Post("me/videos",
new
{
message = "my first photo upload using Facebook SDK for .NET",
file = mediaObject
});
var videoId = (string)result["vid"];
}
catch (FacebookApiException ex)
{
throw;
}
}
Note: DownloadVideoAsByte() returns byte[] from azure blob. following is the code:
public byte[] DownloadVideoAsByte(string videoUrl)
{
HttpWebRequest httpRequest = (HttpWebRequest)WebRequest.Create(videoUrl);
httpRequest.Credentials = CredentialCache.DefaultCredentials;
HttpWebResponse httpResponse = (HttpWebResponse)httpRequest.GetResponse();
System.IO.Stream dataStream = httpResponse.GetResponseStream();
System.IO.StreamReader streamReader = new System.IO.StreamReader(dataStream);
String data = streamReader.ReadToEnd();
byte[] buffer = new byte[data.Length];
for (int i = 0; i < data.Length; i++)
buffer[i] = (byte)data[i];
dataStream.Close();
streamReader.Close();
return buffer;
}
Any help in this regard shall be appreciated.
I have rendered my aspx page to pdf successfully using ITextSharp.
Now i want to add watermark logo in background off PDF file please help me out i have been stuck into this.
Following is my code for export to pdf
private void ShowPdf(string s)
{
Response.ClearContent();
Response.ClearHeaders();
Response.AddHeader("Content-Disposition", "inline;filename=" + s);
Response.ContentType = "application/pdf";
Response.WriteFile(s);
Response.Flush();
Response.Clear();
}
public void PrepareControlForPDF()
{
MemoryStream mem = new MemoryStream();
StreamWriter twr = new StreamWriter(mem);
HtmlTextWriter myWriter = new HtmlTextWriter(twr);
divApplicantDetails.RenderControl(myWriter);
myWriter.Flush();
// myWriter.Dispose();
StreamReader strmRdr = new StreamReader(mem);
strmRdr.BaseStream.Position = 0;
string pageContent = strmRdr.ReadToEnd();
//CreatePDFDocument(strmRdr);
//strmRdr.Dispose();
///mem.Dispose();
CreatePDFDocument(pageContent);
//writer.Write(pageContent);
}
public void CreatePDFDocument(string strHtml)
{
string filename = ""+System.DateTime.Now.Day+"AppLetter.pdf";
// if (System.IO.File.Exists(Server.MapPath("../Pdf") + "/" + filename))
// {
// System.IO.File.Delete(Server.MapPath("../Pdf") + "/" + filename);
// }
string strFileName = Server.MapPath("../Pdf") + "/" + filename;
Document document = new Document();
try
{
PdfWriter.GetInstance(document, new FileStream(strFileName, FileMode.Create));
StringReader se = new StringReader(strHtml);
MemoryStream ms = new MemoryStream();
ms.Write(System.Text.Encoding.ASCII.GetBytes(strHtml), 0, System.Text.Encoding.ASCII.GetBytes(strHtml).Length);
//ms.Position = 0;
StreamReader sr = new StreamReader(new MemoryStream(new System.Text.ASCIIEncoding().GetBytes(strHtml)));
sr.BaseStream.Position = 0;
HTMLWorker obj = new HTMLWorker(document);
document.Open();
obj.Parse(se);
}
finally
{
document.Close();
}
}
I think you can achieve by creating a new class and implementing the IPdfPageEvent interface... refer here
I use Sharepoint 2010 and I am developing a web part where on a button click event, a pdf file needs to be generated and opened directly. Should not be saving onto the disk.
I tried the below code
protected void Button1_OnClick(object sender, EventArgs e)
{
Document myDoc = new Document(PageSize.A4.Rotate());
try
{
PdfWriter.GetInstance(myDoc, new FileStream(#"C:\Directory\Test.pdf", FileMode.Create));
myDoc.Open();
myDoc.Add(new Paragraph("Hello World"));
}
catch (DocumentException ex)
{
Console.Error.WriteLine(ex.Message);
}
myDoc.Close();
}
I also tried the below code which also generates the file on the Server which I dont want.
Document document = new Document(PageSize.A4);
PdfWriter.GetInstance(document, new FileStream(HttpContext.Current.Server.MapPath("~/Test.pdf"), FileMode.Create));
document.Open();
var WelcomePara = new Paragraph("Hello World");
document.Add(WelcomePara);
document.Close();
This one creates the pdf file on the desktop, I need it to be opened in the pdf format.Can someone help me please.
Almost every time that something accepts a FileStream is actually really accepts a generic System.IO.Stream object which FileStream is a subclass of. This means that you can instead use its cousin System.IO.MemoryStream which is what you are looking for:
byte[] bytes;
using (System.IO.MemoryStream ms = new System.IO.MemoryStream()) {
using (iTextSharp.text.Document doc = new iTextSharp.text.Document(iTextSharp.text.PageSize.A4.Rotate())) {
using (iTextSharp.text.pdf.PdfWriter w = iTextSharp.text.pdf.PdfWriter.GetInstance(doc, ms)) {
doc.Open();
doc.NewPage();
doc.Add(new iTextSharp.text.Paragraph("Hello world"));
doc.Close();
bytes = ms.ToArray();
}
}
}
//Do whatever you want with the byte array here
You don't have to create the byte array if you don't want, I was just showing how to create a PDF and give you something ".net-like" for you to work with.
I was able to get it work finally.
using (var ms = new MemoryStream())
{
using (var document = new Document(PageSize.A4,50,50,15,15))
{
PdfWriter.GetInstance(document, ms);
document.Open();
document.Add(new Paragraph("HelloWorld"));
document.Close();
}
Response.Clear();
//Response.ContentType = "application/pdf";
Response.ContentType = "application/octet-stream";
Response.AddHeader("content-disposition", "attachment;filename= Test.pdf");
Response.Buffer = true;
Response.Clear();
var bytes = ms.ToArray();
Response.OutputStream.Write(bytes, 0, bytes.Length);
Response.OutputStream.Flush();
}
This Works for me.
using (var ms = new MemoryStream())
{
using (var document = new Document(PageSize.A4,50,50,15,15))
{
// step 2
PdfWriter writer = PdfWriter.GetInstance(document, ms);
// step 3
document.Open();
// XML Worker
XMLWorker worker = new XMLWorker(css, true);
XMLParser p = new XMLParser(worker);
p.Parse(new StringReader(--Your HTML--));
// step 5
document.Close();
}
Byte[] FileBuffer = ms.ToArray();
if (FileBuffer != null)
{
Response.ContentType = "application/pdf";
Response.AddHeader("content-length", FileBuffer.Length.ToString());
Response.BinaryWrite(FileBuffer);
}
}
I need advice. I zip and crypt SOAP message on web service and client side.
Client is winforms app.
If I only crypt SOAP message, it works good.
If I only zip SOAP message it also works good.
I use SOAP extension on crypt and zip SOAP.
I use AES - Advanced Encryption Standard - Rijndael and on compresion I use SharpZipLib from http://sourceforge.net/projects/sharpdevelop/.
The problem is I send dataset on client.
Firstly I zip and secondly encrypt SOAP on web service side.
Send on client.
On client side I load XML from stream. But it finish with this error :
Data at the root level is invalid. Line 1, position 2234.
Here is the code, where I load XML from stream:
var doc = new XmlDocument();
using (var reader = new XmlTextReader(inputStream))
{
doc.Load(reader);
}
Any advice ? Thank you...
Here are methods on web service side which zip and crypt SOAP :
//encrypt string
private static string EncryptString(string #string, string initialVector, string salt, string password,
string hashAlgorithm, int keySize, int passwordIterations)
{
byte[] initialVectorBytes = Encoding.ASCII.GetBytes(initialVector);
byte[] saltValueBytes = Encoding.ASCII.GetBytes(salt);
byte[] plainTextBytes = Encoding.UTF8.GetBytes(#string);
var derivedPassword = new PasswordDeriveBytes(password, saltValueBytes, hashAlgorithm, passwordIterations);
byte[] keyBytes = derivedPassword.GetBytes(keySize / 8);
var symmetricKey = new RijndaelManaged();
symmetricKey.Mode = CipherMode.CBC;
ICryptoTransform encryptor = symmetricKey.CreateEncryptor(keyBytes, initialVectorBytes);
using (var memStream = new MemoryStream())
{
var cryptoStream = new CryptoStream(memStream, encryptor, CryptoStreamMode.Write);
cryptoStream.Write(plainTextBytes, 0, plainTextBytes.Length);
cryptoStream.FlushFinalBlock();
var serializer = new XmlSerializer(typeof(byte[]));
var sb = new StringBuilder();
TextWriter writer = new StringWriter(sb);
serializer.Serialize(writer, memStream.ToArray());
writer.Flush();
var doc = new XmlDocument();
doc.LoadXml(sb.ToString());
if (doc.DocumentElement != null) return doc.DocumentElement.InnerXml;
}
return "";
}
//zip string
private static byte[] ZipArray(string stringToZip)
{
byte[] inputByteArray = Encoding.UTF8.GetBytes(stringToZip);
var ms = new MemoryStream();
// SharpZipLib.Zip,
var zipOut = new ZipOutputStream(ms);
var zipEntry = new ZipEntry("ZippedFile");
zipOut.PutNextEntry(zipEntry);
zipOut.SetLevel(7);
zipOut.Write(inputByteArray, 0, inputByteArray.Length);
zipOut.Finish();
zipOut.Close();
return ms.ToArray();
}
//zip and encrypt SOAP
public virtual Stream OutSoap(string[] soapElement, Stream inputStream)
{
#region Load XML from SOAP
var doc = new XmlDocument();
using (XmlReader reader = XmlReader.Create(inputStream))
{
doc.Load(reader);
}
var nsMan = new XmlNamespaceManager(doc.NameTable);
nsMan.AddNamespace("soap",
"http://schemas.xmlsoap.org/soap/envelope/");
#endregion Load XML from SOAP
#region Zip SOAP
XmlNode bodyNode = doc.SelectSingleNode(#"//soap:Body", nsMan);
bodyNode = bodyNode.FirstChild.FirstChild;
while (bodyNode != null)
{
if (bodyNode.InnerXml.Length > 0)
{
// Zip
byte[] outData = ZipArray(bodyNode.InnerXml);
bodyNode.InnerXml = Convert.ToBase64String(outData);
}
bodyNode = bodyNode.NextSibling;
}
#endregion Zip SOAP
#region Crypt SOAP
foreach (string xPathQuery in soapElement)
{
XmlNodeList nodesToEncrypt = doc.SelectNodes(xPathQuery, nsMan);
if (nodesToEncrypt != null)
foreach (XmlNode nodeToEncrypt in nodesToEncrypt)
{
//Encrypt
nodeToEncrypt.InnerXml = EncryptString(nodeToEncrypt.InnerXml,
user.IV, user.Salt, user.Password, user.HashType,
user.KeySize, user.PasswordIterations);
}
}
#endregion Crypt SOAP
inputStream.Position = 0;
var settings = new XmlWriterSettings { Encoding = Encoding.UTF8 };
using (XmlWriter writer = XmlWriter.Create(inputStream, settings))
{
doc.WriteTo(writer);
return inputStream;
}
}
Here is a code on client side which decrypt and uzip SOAP :
//decrypt string
private static string DecryptString(string #string, string initialVector, string salt, string password,
string hashAlgorithm, int keySize, int passwordIterations)
{
byte[] initialVectorBytes = Encoding.ASCII.GetBytes(initialVector);
byte[] saltValueBytes = Encoding.ASCII.GetBytes(salt);
byte[] cipherTextBytes = Convert.FromBase64String(#string);
var derivedPassword = new PasswordDeriveBytes(password, saltValueBytes, hashAlgorithm, passwordIterations);
byte[] keyBytes = derivedPassword.GetBytes(keySize / 8);
var symmetricKey = new RijndaelManaged { Mode = CipherMode.CBC };
ICryptoTransform decryptor = symmetricKey.CreateDecryptor(keyBytes, initialVectorBytes);
using (var memStream = new MemoryStream(cipherTextBytes))
{
var cryptoStream = new CryptoStream(memStream, decryptor, CryptoStreamMode.Read);
var plainTextBytes = new byte[cipherTextBytes.Length];
int byteCount = cryptoStream.Read(plainTextBytes, 0, plainTextBytes.Length);
return Encoding.UTF8.GetString(plainTextBytes, 0, byteCount);
}
}
//unzip string
private static byte[] UnzipArray(string stringToUnzip)
{
byte[] inputByteArray = Convert.FromBase64String(stringToUnzip);
var ms = new MemoryStream(inputByteArray);
var ret = new MemoryStream();
// SharpZipLib.Zip
var zipIn = new ZipInputStream(ms);
var theEntry = zipIn.GetNextEntry();
var buffer = new Byte[2048];
int size = 2048;
while (true)
{
size = zipIn.Read(buffer, 0, buffer.Length);
if (size > 0)
{
ret.Write(buffer, 0, size);
}
else
{
break;
}
}
return ret.ToArray();
}
public virtual Stream InSoap(Stream inputStream, string[] soapElement)
{
#region Load XML from SOAP
var doc = new XmlDocument();
using (var reader = new XmlTextReader(inputStream))
{
doc.Load(reader);
}
var nsMan = new XmlNamespaceManager(doc.NameTable);
nsMan.AddNamespace("soap",
"http://schemas.xmlsoap.org/soap/envelope/");
#endregion Load XML from SOAP
#region Decrypt SOAP
foreach (string xPathQuery in soapElement)
{
XmlNodeList nodesToEncrypt = doc.SelectNodes(xPathQuery, nsMan);
if (nodesToEncrypt != null)
foreach (XmlNode nodeToEncrypt in nodesToEncrypt)
{
nodeToEncrypt.InnerXml = DecryptString(nodeToEncrypt.InnerXml, saltPhrase, passwordPhrase, initialVector,
hashAlgorithm, passwordIterations, keySize);
}
}
#endregion Decrypt SOAP
#region UnZip SOAP
XmlNode node = doc.SelectSingleNode("//soap:Body", nsMan);
node = node.FirstChild.FirstChild;
while (node != null)
{
if (node.InnerXml.Length > 0)
{
byte[] outData = UnzipArray(node.InnerXml);
string sTmp = Encoding.UTF8.GetString(outData);
node.InnerXml = sTmp;
}
node = node.NextSibling;
}
#endregion UnZip SOAP
var retStream = new MemoryStream();
doc.Save(retStream);
return retStream;
}
strong text
I'm not sure why your unencrypted xml won't parse, but I think you're first step should be to dump the decrypted data to the terminal to see exactly what text you're getting back. Perhaps the process corrupts your data somehow, or you have an encoding issue.
Alternatively, you could configure your server to use https and gzip compression to achieve the same goal. You won't loose any security with this approach and this is by far the more standard way to do things. You can also have a look at MS's support for the WS-Security standard
i have imgae path in datatable[id, path] now this would a value like
ex: id path
1 F:\R&D\RD\RD\Images\a1.JPG;
2 F:\R&D\RD\RD\Images\a2.JPG;
3 F:\R&D\RD\RD\Images\a3.JPG;
now these images are in size width*height (1018*768). now i need to convert these images into thumnail
caling the function
**C_Thumbnails(100, "F:\R&D\RD\RD\Images\a1.JPG", "F:\R&D\RD\RD\Images]thum.jpg")**
public static void C_Thumbnails(int size, string FilePath, string ThumbPath)
{
System.Drawing.Image image = System.Drawing.Image.FromFile(FilePath);
try
{
int thumbHeight, thumbWidth;
decimal h = image.Height;
decimal w = image.Width;
if (image.Height > image.Width)
{
thumbHeight = size;
decimal tWidth = (w / h) * thumbHeight;
thumbWidth = Convert.ToInt32(tWidth);
}
else
{
thumbWidth = size;
decimal tHeight = (h / w) * thumbWidth;
thumbHeight = Convert.ToInt32(tHeight);
}
System.Drawing.Image thumbnailImage = image.GetThumbnailImage(thumbWidth, thumbHeight, null, IntPtr.Zero);
image.Dispose();
thumbnailImage.Save(ThumbPath, System.Drawing.Imaging.ImageFormat.Jpeg);
}
catch (Exception ex)
{
image.Dispose();
throw ex;
}
}
like this i am coverting into thumbnail image. but here i am saving the thumbnail image under the path F:\R&D\RD\RD\Images\thum.jpg .
so is there any way without saving the thumbnail in the disk and how to bind the new thumbnail image in the repeater control and i need to show image there. but if once user clicks on the thumnail image a orignal image should pop up.
if any one have did this functionlity any where let me know
working on this solution from past 2 days.
any help would be greatly appreciated
now after changing code
like this
public void ProcessRequest(HttpContext context)
{
string imageid = context.Request.Params["ImageID"];
string thumbnail = context.Request.Params["thumbnail"];
SqlConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings["connectionString"].ConnectionString);
connection.Open();
SqlCommand command = new SqlCommand("select Image from Image where ImageID=" + imageid, connection);
SqlDataReader dr = command.ExecuteReader();
dr.Read();
string filePath = dr["image"].ToString();
dr.Close();
if (!System.IO.File.Exists(filePath))
{
//you have a problem
return;
}
if (context.Request.Params["thumbnail"] == "true")
{
//TODO: the thumbnail
// Image thumbnailImage = originalImage.GetThumbnailImage to generate thumbnail then
Response.ClearContent();
Response.ClearHeaders();
Response.ContentType = "image/" + format;
thumbnailImage.Save(Response.OutputStream, imageFormat);
thumbnailImage.Dispose();
}
else
{ //stream directly the image fromdisk
System.IO.FileStream fs = System.IO.File.OpenRead(filepath);
const int ChunkSize = 10000;
Byte[] buffer = new Byte[ChunkSize];
long dataLengthToRead = fs.Length;
while (dataLengthToRead > 0)
{
int lengthRead = fs.Read(buffer, 0, ChunkSize);
Response.OutputStream.Write(buffer, 0, lengthRead);
System.Web.HttpContext.Current.Response.Flush();
dataLengthToRead = dataLengthToRead - lengthRead;
}
fs.Close();
}
}
}
in repeater control i have added this line of code
','_blank','toolbar=no,menubar=no'))" > '/>
my thumbnail image is not displayed still but once i click my thumbnail image i am able to see the entire image in new pop up
You should use a Photo Image Handler to serve the pages from your disk to the clients.
Then in the repeater control
<a href="ImageHandler.ashx?thumbnail=false&id='<%# Eval("ID")%>'>
<img src="ImageHandler.ashx?thumbnail=true&id='<%# Eval("ID")%>' border='0'/>
</a>
The ideea is not to pass in the actual path/name of the file, but the ID of the item you wish to view. Then the handler will:
public void ProcessRequest(System.Web.HttpContext context)
{
string filePath = //TODO: Get File Path from ItemID = context.Request.Params["id"]
if (!System.IO.File.Exists(filePath))
{
//you have a problem
return;
}
if(context.Request.Params["thumbnail"]=="true")
{
//TODO: the thumbnail
// Image thumbnailImage = originalImage.GetThumbnailImage to generate thumbnail then
Response.ClearContent();
Response.ClearHeaders();
Response.ContentType = "image/" + format;
thumbnailImage.Save(Response.OutputStream, imageFormat);
thumbnailImage.Dispose();
} else
{ //stream directly the image fromdisk
System.IO.FileStream fs = System.IO.File.OpenRead(filepath);
const int ChunkSize = 10000;
Byte[] buffer = new Byte[ChunkSize];
long dataLengthToRead = fs.Length;
while (dataLengthToRead > 0)
{
int lengthRead = fs.Read(buffer, 0, ChunkSize);
Response.OutputStream.Write(buffer, 0, lengthRead);
System.Web.HttpContext.Current.Response.Flush();
dataLengthToRead = dataLengthToRead - lengthRead;
}
fs.Close();
}
}