Web Forms :: Out Of Memory Exception On Writing Large Files To Response
May 7, 2010I have to large files in a database which users can download. The user clicks a link and the following code runs:
[Code]....
Similar Messages:
C# - Out Of Memory Exception While Writing 300dpi Images
Jan 19, 2011I have a requirement that to create a image with 300DPI, but during the composition of image, like addding the resources (font, images) I am getting out of memory exception.
using (Bitmap pg = new Bitmap(GetPixelsFromInches(float.Parse(pageWidth), dpi, actualDpi), GetPixelsFromInches(float.Parse(pageHeight), dpi, actualDpi)))
{
pg.SetResolution(float.Parse(dpi), float.Parse(dpi));
Graphics gr = Graphics.FromImage(pg);
gr.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
System.Drawing.Rectangle pgRect = new System.Drawing.Rectangle(0, 0, pg.Width, pg.Height);
SolidBrush solidWhite = new SolidBrush(Color.White);
gr.FillRectangle(solidWhite, pgRect);
currentPageDisplayed = xNode.Attributes["id"].Value;
foreach (XmlElement xElement in xNode)
{
//Here I am writing each elements, like texts or images.
DrawImageForElements(xElement, , dpi, actualDpi);
}
MemoryStream myMemoryStream = new MemoryStream();
//pg.Save(myMemoryStream, System.Drawing.Imaging.ImageFormat.Bmp);
String filename=@"c:images" + currentPageDisplayed + "+.png";
pg.Save(filename, System.Drawing.Imaging.ImageFormat.Png);
myMemoryStream.Dispose();
gr.Dispose();
pg.Dispose();
}
Web Forms :: SQLBulkCopy Out Of Memory Exception For Larger Files
Dec 23, 2015I'm using SqlBulkCopy to load large file into databse, but a file bigger than 200k give me an error outofmemoryexception. Is there any way to append data into database from a file splitted in two. the first time I can use SqlBulkCopy, but to append second file into my table.
View 1 RepliesHttpHandlers / Modules :: Large Files Over Httphandler And IIS7 Out Of Memory?
Oct 4, 2010I have a problem with large respones and IIS7, the server runs out of memory. I've written the test code below that works pretty much like my real code... When i start to download the file i can se the memory usage rise until it hits 100% and Firefox complaints about lost connection to server, looks like IIS7 does not release cache or something.. Works in IIS6 by the way
[Code]....
Post Back Does Not Work After Writing Files To Response?
Feb 25, 2010What I have?I have a ASP.NET page which allows the user to download file a on a button click. User can select the file he wants from a list of available files (RadioButtonList) and clicks on download button to download it. (I should not provide link for each file that can be downloaded - this is the requirement).What I want?I want the user to download multiple files one by one by selecting the required radio button and clicking on the button.What problem am I facing?I can download the file for the first time properly. But, after downloading, if I select some other file and click on the button to download it, click event of the button does not post back and the second file will not be downloaded.I use the follwoing code on the button click event:
protected void btnDownload_Click(object sender, EventArgs e)
{
string viewXml = exporter.Export();
Response.Clear();
Response.AddHeader("Content-Disposition", "attachment; filename=views.cov");
Response.AddHeader("Content-Length", viewXml.Length.ToString());
Response.ContentType = "text/plain";
Response.Write(viewXml);
Response.End();
}
Security Exception Over Reading/writing Files On Medium Trust?
Nov 21, 2010I'm working on a project in ASP.Net, and it requires reading/writing to files on my server. I'm hosted at GoDaddy, and they swear they've got me at Medium Trust. When I try to read or write files that are in my own domain, I get Security Exceptions. I've tried multiple ways of opening/saving the files and they all return security errors. Here's the most recent error and offending line of code (I didn't save them all, they're all pretty much the same thing):
Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.MediaPermission, WindowsBase, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' failed.
PngBitmapEncoder pbe = new PngBitmapEncoder();
pbe.Frames.Add(BitmapFrame.Create(new Uri("ornament.png", UriKind.Relative))); <-- Error
I've also gotten the error when trying to read/write using FileStream, Bitmap.Save and new Bitmap("ornament.png"). Could there be a problem with my Web.config? Is read/write supposed to be blocked by medium trust? This is a time-sensitive project and this is a brick wall for me. The deadline is end of business day tomorrow and GoDaddy isn't responding.
Writing Xml To Memory Instead Of A File?
Feb 18, 2010Is there a way to write xml directly to an object that can represent it in memory and use that with XPath instead of an .xml file?
View 1 RepliesWeb Forms :: Out Of Memory Exception On Remote Server
Oct 18, 2010I'm not sure why but on random occassions after I have added an update to my site via ftp and then try to access the site through the browser I get an "out of memory" exception. But there are no infinite loops or problems like that. Then after some time it will then work (I assume the web hosts restart IIS or something) and all is fine again. Server Error in '/' Application. Exception of type 'System.OutOfMemoryException' was thrown. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
Source Error:
[Code]....
Stack Trace:
[Code]....
MVC :: File Upload In Chunks Or Not Buffering In Memory Before Writing To Disk?
Aug 19, 2010What are the options for handling file uploads to reduce the memory footprint? Is there a way to upload in chunks? Is there a way to stream upload directly to disk instead of loading entire file in server memory?
View 1 RepliesWriting .txt File When There Is Large Amount Of Data?
Jul 22, 2010i have write data from db to .txt file,where db have large amount data,i need to wite data into file, if some error occure, then reInitiated that file and write data again without stop process.that is Continuous calling same process
View 2 RepliesWeb Forms :: Out Of Memory Exception When Retrieve Video From Database According To Id And Open It
Jun 28, 2010i am using this code to retreive video from database according to id it works fine but when i open the sam page in two browser window i get Out of memory exception. how i can get rid of this exception.
EDataContext eld = new EDataContext();
var query = (from item in eld.Videos
where item.VideoID == VideoID
select item.Videodata);
foreach (System.Data.Linq.Binary arr in query)
{
context.Response.BinaryWrite(arr.ToArray());
}
Forms Data Controls :: 2.0 - System.out Of Memory Exception Error When Access The Web Application
Apr 16, 2010I am working on a ASP.NET 2.0 application. I get the following exception sometimes when i access the web application. I believe it is related to the server where the application is hosted? Exception of type 'System.OutOfMemoryException' was thrown. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace:
[OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.]
System.Reflection.Assembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection) +0
System.Reflection.Assembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, Assembly locationHint, StackCrawlMark& stackMark, Boolean throwOnFileNotFound, Boolean forIntrospection) +43
System.Reflection.Assembly.InternalLoad(AssemblyName assemblyRef, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +127
System.Reflection.Assembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) +142
System.Reflection.Assembly.Load(String assemblyString) +28
System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +46
[ConfigurationErrorsException: Exception of type 'System.OutOfMemoryException' was thrown.]
System.Web.Configuration.CompilationSection.LoadAssemblyHelper(String assemblyName, Boolean starDirective) +613
System.Web.Configuration.CompilationSection.LoadAllAssembliesFromAppDomainBinDirectory() +203
System.Web.Configuration.CompilationSection.LoadAssembly(AssemblyInfo ai) +105
System.Web.Compilation.BuildManager.GetReferencedAssemblies(CompilationSection compConfig) +178
System.Web.Compilation.BuildProvidersCompiler..ctor(VirtualPath configPath, Boolean supportLocalization, String outputAssemblyName) +54
System.Web.Compilation.ApplicationBuildProvider.GetGlobalAsaxBuildResult(Boolean isPrecompiledApp) +227
System.Web.Compilation.BuildManager.CompileGlobalAsax() +52
System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() +337
[HttpException (0x80004005): Exception of type 'System.OutOfMemoryException' was thrown.]
System.Web.Compilation.BuildManager.ReportTopLevelCompilationException() +58
System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() +512
System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters) +729
[HttpException (0x80004005): Exception of type 'System.OutOfMemoryException' was thrown.]
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +8890735
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +85
System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) +259
What can be the reason for this error and what to check on the code or the server?
Writing Files (excel Contains Names Of Pdf Files) To Disk
Oct 11, 2010I'm populating a generic list from an excel file that contains names of pdf files. Now I want to take each item in the list and create a file from it. Here's what I have so far:
[Code]....
So now, the list called lines contains names of 900 pdf files. How would I take those names out of the list and create files from them?
Web Forms :: Send A Large File To The Response Stream - OutofMemory?
May 20, 2010I'm using Filestream for read big file (> 500 MB) and I get the OutOfMemoryException. Any solutions about it?? I want this in my app asp.net: Read DATA from Oracle Uncompress file using FileStream and BZip2 Read file uncompressed and send it to asp.net page for download. When I read file from disk, Fails !!! and get OutOfMemory. My Code is:
using (var fs3 = new FileStream(filePath2, FileMode.Open, FileAccess.Read))
{
byte[] b2 = ReadFully(fs3, 1024);
}
// [URL]
public static byte[] ReadFully(Stream stream, int initialLength)
{
// If we've been passed an unhelpful initial length, just
// use 32K.
if (initialLength < 1)
{
initialLength = 32768;
}
byte[] buffer = new byte[initialLength];
int read = 0;
int chunk;
while ((chunk = stream.Read(buffer, read, buffer.Length - read)) > 0)
{
read += chunk;
// If we've reached the end of our buffer, check to see if there's
// any more information
if (read == buffer.Length)
{
int nextByte = stream.ReadByte();
// End of stream? If so, we're done
if (nextByte == -1)............................
C# - Static Vs Member Field Revisited / Want To Persist A Large Dictionary Of Strings Inside The Memory?
Feb 18, 2011I need an advice on piece of functionality that I am ought to implement. The scenario is that we haven an HttpHandler which servers to intercept file uploads. In the handler, I need to persist a large dictionary of strings inside the memory. The dictionary might be as large as 100 entries. I am wondering whether it is safe to store that in a static variable, so that it is not initialized every time instance of the handler is created (there will be a lot of instance for sure). In general, what is the approach in such scenarios. Is it a generally better idea to use static fields, to persist data that will not be changed?
View 5 RepliesDatabases :: Isolate An Out Of Memory Exception?
Nov 17, 2010How to isolate an out of memory exception
View 2 RepliesVS 2008 Read XML Returning Out Of Memory Exception?
Mar 11, 2011I have a large XML file that contains invalid hex characters. I'm trying to test a function that removes invalid characters from the XML file but it must be stored in a string. When I try to read the XML file into a string I receive an out of memory exception. The file is 149MB. Can anyone tell me if there is another way to do this?
Code:
[code]....
Ajax - Changing Culture - To Get An Out Of Memory Exception?
Jan 21, 2010I have a strange problem with ASP.NET. Several sites on my web server run the exact same application. The application has a page that contains a Tab Container from the Ajax Control Toolkit which in itself contains a Calendar control.
If I set my culture in the web.config to be:
<globalization culture="en-GB" uiCulture="en-GB" />
Then everything works fine. However, by changing this to:
<globalization culture="en-US" uiCulture="en-US" />
When attempting to load the page I get an out of memory exception and w3wp.exe seems to use all available memory.
C# - Getting An Out Of Memory Exception With System.Threading.ReaderWriterCount
Nov 1, 2010I've got an asp.net application, it's running on DotNetNuke, under load we get the occasional out of memory exception. I've got a dump loaded it into windbg. the end of !dumpheap -stat is
1192a588 88684 2128416 AutoMapper.MappingEngine
79333594 9482 2266348 System.Byte[]
134b0034 88695 2838240 System.EventHandler`1[[AutoMapper.TypeMapCreatedEventArgs, AutoMapper]]
13d8703c 88684 4611568 System.Collections.Generic.Dictionary`2[[Castle.DynamicProxy.Generators.CacheKey, AutoMapper],[System.Type, mscorlib]]
13d86dc8 88684 4611568 Castle.DynamicProxy.ModuleScope
13d865bc 88684 4611568 System.Collections.Generic.Dictionary`2[[AutoMapper.Internal.TypePair, AutoMapper],[AutoMapper.IObjectMapper, AutoMapper]]
79327434 88703 4612556 System.Collections.Generic.Dictionary`2[[System.String, mscorlib],[System.Int32, mscorlib]]
6c38e4e4 88684 5675776 System.Threading.ReaderWriterLockSlim
79330b24 87736 6458012 System.String
000d9c88 129 24186884 Free
793042f4 221202 101117016 System.Object[]
6c38e4a0 22703104 544874496 System.Threading.ReaderWriterCount
I can't find much information on the System.Threading.ReaderWriterCount, as it seems to be the problem. What is the likely cause? Or failing that what's the best next step to work that out? Based on the pointer from the given answer I had a look at ReaderWriterLockSlim. I wasn't using it directly, but I saw that it had 88684 instances, digging deeper I saw quite a few classes with that number of instances, pointing to AutoMapper.MappingEngine. This should be a singleton, so I've had a look at where it's being created. I suspect that it's the DI container and have made some changes around that to see if it helps
Web Forms :: Writing Text Files Using Streamwriter
Jun 16, 2010i'm using stream writer to write a text file on client machine, but everytime while i'm writing a new file it over writes the existing one..so now i need to write seperate file each time ...and also i need to create a folder dynamically for first time and save text files in that folder when everytime i use my application....
View 3 RepliesIE Bugs When Writing JSON Via An ASPX Response
Jun 17, 2010I have an ASPX page that I am using to write JSON. It works great in Firefox and Chrome, but when I try and use it in IE 8 it gives me an "The XML page cannot be displayed" error instead of allowing jQuery to load the JSON being written by the response. Here is what my code looks like:
protected override void OnLoad(EventArgs e)
{
Response.Clear();
Response.ClearHeaders();
Response.ContentType = "application/json";
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Write(string.Format("[ {{ "Foo": "{0}", "bar": "{1}" }} ]", "Foo Content", "Bar Content"));
Response.End();
}
Response - Finding Memory Usage During Download?
Jan 22, 2010On an ASP.net site at my place of work, the following chunk of code is responsible for handling file downloads (NOTE: Response.TransmitFile is not used here because the contents of the download are being streamed from a zip file):
[code]....
I've just read about the 'buffer' property of the Response object. If I set that to false, will that prevent the Response.BinaryWrite() calls from buffering the data in memory? In general, what is a good way to limit memory usage in this situation? Perhaps I should stream from the zip to a temporary file, then call Response.TransmitFile()?
EDIT: In addition to possible solutions, I'm very interested in explanations of the memory usage issue present in the code above. Why would this consume far more than 1MB, even though Response.Flush is called on every loop iteration? Is it just the unnecessary heap allocation that occurs on every loop iteration (and doesn't get GC'd right away), or is there something else at work?
C# - How To Solve Out Of Memory Exception Error In Entity Framework
Apr 5, 2010these below codes give whole data of my Rehber datas. But if i want to show web page via Gridview send me out of memory exception error.
[code]....
DataSource Controls :: Datatable To Excel Memory Exception?
Feb 1, 2010[Code]....
View 4 RepliesCrystal Reports :: Out Of Memory Exception While Reading The Records
Feb 9, 2011im using sap crystal report version 13.0.2000.0. i've 27,000 records to be printed but when i run my application the exception error is displayed "Out Of Memory".. i've my appliation in VS2010 and OS is server 64bit and 4GB RAM..
View 1 Replies