i will be passing the xml file like this:
[code]....
error:
Error 1 The best overloaded method match for 'System.Xml.Linq.XDocument.Load(string)' has some invalid arguments
cannot convert from 'System.IO.Stream' to 'string'
I have an excel file in my Response Output stream. I can Open the stream as a file after a prompt, but it doesn't seem I can save it directly to a specified folder on my client.
View 1 RepliesI have made a WCF web service that streams a 200 mb zip file. how i can read this stream at my client and then give option to the user to download that
View 1 Repliesmy table column is:
AttachContent varbinary (max)
when i try to retrieve the data and i get this below error, i am using linq
cannot convert from 'System.Data.Linq.Binary' to 'System.IO.BinaryReader'
byte[] bytes = new byte[uploader.UploadedFiles[0].InputStream.Length];
uploader.UploadedFiles[0].InputStream.Read(bytes, 0, bytes.Length);
var storedFile = new document();
string strFullPath = uploader.UploadedFiles[0].FileName;
string strFileName = Path.GetFileName(strFullPath);
storedFile.document_id = Guid.NewGuid();
storedFile.content_type = uploader.UploadedFiles[0].ContentType;
storedFile.original_name = strFileName;
storedFile.file_data = bytes;
storedFile.date_created = DateTime.Now;
db.documents.InsertOnSubmit(storedFile);
db.SubmitChanges();
If:
Reading from a stream in a single call to Read is very dangerous. You're assuming all the data will be made available immediately, which isn't always the case. You should always loop round, reading until there's no more data.
How should I change the above code to make it 'less dangerous'?
We have a process that calles a url to pull an image (in this case a .tif image) and it calls this function which works most of the time but recently is getting errors. If I step through the While loop of a 92k file it gets to the end and then errors on the following line:
nBytesRead = stStream.Read(baBytes, 0, MAX_BUF)
I have added a Try/End Try statement which appears to work but is there a better option?
The error I get is:
System.IO.IOException: Unable to read data from the transport connection: The connection was closed.
Code:
Private Function ReadAsByteArray(ByVal stStream As Stream) As Byte()
Dim msBuffer As New MemoryStream()
Dim swWriter As New StreamWriter(msBuffer)
Dim nTotalBytesRead As Integer
Dim nBytesRead As Integer
Dim baBytes(MAX_BUF) As Byte
nTotalBytesRead = 0
nBytesRead = MAX_BUF
While True
'ORIGINALLY THE TRY IS NOT THERE
Try
nBytesRead = stStream.Read(baBytes, 0, MAX_BUF)......
in previously asked question answeres said they dont get what i want to do exactly so heres is the full code also i simply want that instead of a TABLESe i rendered an image( of the content ) on the page
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.IO;
using System.Text;
using System.Data;
using System.Drawing;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
System.Web.UI.WebControls.Panel panelmain = new System.Web.UI.WebControls.Panel();
System.Web.UI.WebControls.Literal abc = new System.Web.UI.WebControls.Literal();
abc.Text = "as<br/>dasdas<br/>dasdad";
DataSet ds = new DataSet();
DataTable dt;
DataRow dr;
DataColumn idCoulumn;
DataColumn nameCoulumn;
dt = new DataTable();
idCoulumn = new DataColumn("ID", Type.GetType("System.Int32"));
nameCoulumn = new DataColumn("Name", Type.GetType("System.String"));
dt.Columns.Add(idCoulumn);
dt.Columns.Add(nameCoulumn);
dr = dt.NewRow();
dr["ID"] = 1;
dr["Name"] = "Name1";
dt.Rows.Add(dr);
dr = dt.NewRow();
dr["ID"] = 2;.............
I'm trying to get data from a CSV file and add it directly into a database using Linq.
I'm using the following code:
[Code]....
The code works if I remove all the but the first property e.g.
[Code]....
But then I get the old "System.IndexOutOfRangeException: Index was outside the bounds of the array." exception when adding more columns.
Any code snippet or third party utilities to do this? Anything built into .NET libraries?
View 3 RepliesI would like to read all content that's been written to the output stream. I'm attempting to do this using an HTTP module, and it seems like the obvious timing would be when handling the PreSendRequestContent event.
However, if the output stream seems to be set to write-only, as I can't read using a StreamReader. Is there a way I read and re-write the content without writing my own IIS module?
My web page contains a file upload control that is used to select excel file. What my code does; is to read the content of that file and store its content to DB. Right now, I save this file to server and read its content using OLEDB.I want to know is there any way i can read the content without saving it on the server?
View 2 Repliesi am trying to read file from a stream.
and i am using stream.read method to read the bytes. So the code goes like below
FileByteStream.Read(buffer, 0, outputMessage.FileByteStream.Length)
Now the above gives me error because the last parameter "outputMessage.FileByteStream.Length" returns a long type value but the method expects an integer type.
I created a simple Http Module that starts a timer on the PreRequestHandler and stops the timer on the PostRequestHandler to calculate the time it took the page to load. I then create some simple html and write my results to Response.Write. Since I'm doing this in the PostRequestHandler it's adding my results after the </html> tag. That's fine for testing but I need in a scenario where the page needs to validate.
I can't seem to figure out how I could manipulate the Response object to insert my results before the </body> tag. Response.Write and Response.Output.Write don't have that flexibility and I couldn't see a way to work with the Response as a string. Am I missing something easy?
If I have below code, how to make it work as it has below compile error:
Error: cannot implicitly convert type 'System.Linq.Iqueryable<system.data.DataSet> to 'System.Data.Dateset'. An explicit conversion exists.
public DataSet GetProductList()
{
using (var sdatabase = new DatabaseDataContext())
{
IQueryable<DataSet> result = wmsdatabase.ExecuteQuery<DataSet>(@"SELECT productid, productname from product group by productid, productname").AsQueryable();
return result; // Compile error here
}
}
I have this method which does not build, it errors with the message:
Cannot implicitly convert type 'System.Web.HttpPostedFile' to 'System.Web.HttpPostedFileBase'
I really need this to be of type HttpPostedFileBase instead of HttpPostedFile, I have tried boxing and it does not work:
foreach (string inputTagName in HttpContext.Current.Request.Files)
{
HttpPostedFileBase filebase =HttpContext.Current.Request.Files[inputTagName];
if (filebase.ContentLength > 0)
{
if (filebase.ContentType.Contains("image/"))
{
SaveNonAutoExtractedThumbnails(doc, filebase);
}
}
}
i work with visual studio 2005 and asp net 2.0. i have a method method as this :
[Code]....
this problem is follow if i run the web method and don't enter a string and a int a receive this message : System.ArgumentException: Cannot convert to System.Int32. ok when i arrive in the method i can check if lists is empty but how i can do if int is NULL because i don't want to returns a error if people run my web method and don't enter the parameters.
I want to log all errors happened in my App to sql db. I'm passing all exception properties like (ex.Message, ex.Source, ex.StackTrace, ex.TargetSite and ex.InnerException) to stored procedure.
The problem is that when I try to pass the ex.InnerException as string to stored procedure I got this error:
Cannot implicitly convert type 'System.Exception' to 'string'
I tried ex.InnerException.ToString() and Convert.ToString (ex.InnerException) but no success.
Assume we have the access to sth.avi on [URL] with a direct link.
e.g : [URL] Also we have a website => www.dl2.com.
Now, we wanna let some users to download sth.avi from [URL], but we don't have enough space on [URL] to save sth.avi. Is it possible in ASP.NET for us to read sth.avi from www.dl.com as streaming file and share it without saving the file on our domain.
P.S: I don't wanna share this link [URL], actually I wanna share something like this link [URL]
I am attempting to use SqlBulkCopy to import data from an XML document. I receive the following error when executing WriteToServer: Invalid cast from 'System.String' to 'System.Guid'
View 1 RepliesI have a DataTable that i want to convert it to xml and then zip it, using DotNetZip. finally user can download it via Asp.Net webpage.
My code in below
dt.TableName = "Declaration";
MemoryStream stream = new MemoryStream();
dt.WriteXml(stream);
ZipFile zipFile = new ZipFile();
zipFile.AddEntry("Report.xml", "", stream);
Response.ClearContent();
Response.ClearHeaders();
Response.AppendHeader("content-disposition", "attachment; filename=Report.zip");
zipFile.Save(Response.OutputStream);
//Response.Write(zipstream);
zipFile.Dispose();
the xml file in zip file is empty.
I have a url that points directly to a wav file. Id like to extract the file from the url and save it to a file on our file system.
View 2 RepliesI have created a method i.e. getAddress as mentioned below. protected void getAddress(string Address)
{
myAddress = "New";
Response.Write(myAddress);
}
When I run directly as
getAddress("some address);
It works perfectly, but when I run as
string txtProperty.Text = getAddress("some address);
It giving me following error
Cannot implicitly convert type 'void' to 'string' at System.Web.Compilation.AssemblyBuilder.Compile()
It seems this not the correct way to call this?
I am trying to filestream to my hosting Companies sever.I have tried the below expecting it would not work. How can I find the correct path.Could not find a part of the path 'C:ERAPDFERA202.60.64.136.1.pdf'.
Exception Details: System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:ERAPDFERA202.60.64.136.1.pdf'.
Source Error:
[Code]....
I changed an app so one of the edit screens opens as a pop-up window via showModalDialog. Previously everything was done in the same window and more back and forth navigation was required. The pop-up provides greater continuity. Unfortunately, as a pop-up, files will not stream to the desktop. If I bring up the page by entering a URL on the address line, so it is not a pop-up, files stream to the desktop OK.
Streaming a file to the desktop is done as follows:
[Code]....
This causes an open/save/cancel dialog to appear in the browser. Does anyone have an idea why a file cannot be streamed to a pop-up window? To get pop-ups to work I always include
[Code]....
in the header. That way I can open other pop-ups such as warnings and database error messages from a prvious pop-up.
I don't think there is a way around this but figured I'd ask... We have an application where a user can generate PDF documents that are streamed to the browser. There is some additional functionality going on behind the scene and I would like to be able to display a message to the user (via updating a literal tag on the page). I don't get any errors when doing this but the page isn't updated and the message isn't displayed. My guess is that streaming the document blocks any other content from going down to the client. In particular, we're using CeTe Dynamic PDF and calling one of their methods but I think it's essentially just doing a Response.BinaryWrite to stream out the PDF.
View 6 Replies
