C# - "Parameter Is Not Valid" Exception From System.Drawing.Image.FromStream() Method?
Aug 27, 2010
I got a hard time with the Image.FromStream method in my website. The code below works perfect on my computer. But when I uploaded it to the test server, it always gives me "Parameter not valid" exception.
if (!afuImageFile.IsUploading && afuImageFile.HasFile)
{
System.Drawing.Image imgFile = System.Drawing.Image.FromStream(afuImageFile.FileContent);
}
the afuImageFile is an AsynFileUploader control in Ajax Tool Kits. afuImageFile.FileContent is a HttpInputStream.
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Nov 22, 2010
I am getting a parameter is not valid exception..While saving the image
Here is my code to save the image
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string delStr = pictureBox1.Tag.ToString();
pictureBox1.Image.Dispose();
File.Delete(delStr);
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Nov 18, 2010
I have implemented the following functionality that connects to webservice and downloads a favicon from a given site and saves it to a byte[] which I store in our database. I now want to set it up so that it saves the icon to the disk. However I am getting a "Parameter is not valid" when I try and create the image from the byte[].My code is as follows..
stream.Write(imageByteArray, 0, imageByteArray.Length);
Image i = Image.FromStream(stream); // EXCEPTION HAPPENS HERE.
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The exception occurs on the middle line. This code works perfectly 9 times out of ten, but for some favicons, even thought the icon is a valid image (or at least it appears to be and it shows in the browser when point at it) I get this exception. Does anyone have any ideas? I am pulling my hair out here!
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Aug 9, 2010
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Nov 1, 2010
All of a sudden I started getting this nasty exception all over the place:
The type initializer for 'System.Drawing.ToolboxBitmapAttribute' threw an exception.
Some relevant observations: * The error started occuring a few hours after the last deployment to the live server, not immediately after. So it basically started occuring of its own accord.
* We have recently moved to a new host (a VPS). The error only occurs on that server, not our local server nor at the old host's (which was a shared environment).
* The problem is basically the same as this: [URL]
* I tried reinstalling Ajax extensions, then our website in IIS, then finally the .Net 2 framework. But the error still occurs after all this.
* The error occurs on line 1, which is just the page directive: <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="Test.WebForm1" %>
I'm finding it difficult to get a decent trace, but here is one that our CMS provided:
The type initializer for 'System.Drawing.ToolboxBitmapAttribute' threw an exception.
at System.Web.UI.TemplateParser.ProcessException(Exception ex)
at System.Web.UI.TemplateParser.ParseStringInternal(String text, Encoding fileEncoding)
at System.Web.UI.TemplateParser.ParseString(String text, VirtualPath virtualPath, Encoding fileEncoding)
at System.Web.UI.TemplateParser.ParseFile(String physicalPath, VirtualPath virtualPath)
at System.Web.UI.TemplateParser.ParseInternal()
at System.Web.UI.TemplateParser.Parse()
at System.Web.Compilation.BaseTemplateBuildProvider.get_CodeCompilerType()
at System.Web.Compilation.BuildProvider.GetCompilerTypeFromBuildProvider(BuildProvider buildProvider)
at System.Web.Compilation.BuildProvidersCompiler.ProcessBuildProviders()
at System.Web.Compilation.BuildProvidersCompiler.PerformBuild()
at System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath)
at System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile)
at System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile)
at System.Web.UI.TemplateControl.LoadControl(VirtualPath virtualPath)
at System.Web.UI.TemplateControl.LoadControl(String virtualPath)
at umbraco.macro.loadUserControl(String fileName, Hashtable attributes, page umbPage)
My own code doesn't use the ToolboxBitmapAttribute, but third party products like Peter Blum's and Telerik's do.
Peter Blum replied with some useful hints:
* The "type initializer" concept probably needs some research, but I'm guessing that is an important clue. A quick web search of "type initializer" finds many situations it occurs for a variety of classes.
* The stack trace suggests that this is happening as ASP.NET is compiling your web form. The error is happening as the ASP.NET parser runs. Again this is external from my code (even creating or "type initializing" the attribute is not something my code does).
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Jun 4, 2010
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Mar 12, 2010
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Jul 22, 2010
I get this Microsoft .NET Framework start up error. when i try to run a window project.
i am working on visual studio2005 (.NET FRAMEWORK2.0).
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below is the error ....
See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box.
Exception Text
System.ArgumentException: Parameter is not valid.
at System.Drawing.Bitmap..ctor(String filename)
at HumanHistology.frmquiz1.FillOptions()
at HumanHistology.frmquiz1.btnnext_Click(Object sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
Loaded Assemblies
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900)
CodeBase:
file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll.........
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Dec 6, 2010
I'm using a slightly modified version of Valum's upload [github link], I've modified it to upload to a database but haven't modified the javascript that it is using to get the file into the Request as an InputStream. The following line of code is failing in IE 8 but is confirmed to work in Chrome. using (Image imgInput = Image.FromStream(Request.InputStream)) The error received is "Parameter not valid". It appears to be having an issue with the Input Stream being used but it exists/has data (not sure how to validate if the data is good or not).
Page
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<h2>Upload-Pictures</h2>
<div id="file-uploader">
<noscript>
<p>Please enable JavaScript to use file uploader.</p>
</noscript>
</div>
<script src="/Scripts/fileuploader.js" type="text/javascript"></script>
<script type="text/javascript">
function createUploader() {
var uploader = new qq.FileUploader({
element: document.getElementById('file-uploader'),
action: '/Admin/FileUpload/' + <%= Model.PropertyId %>,
debug: true
});
}
window.onload = createUploader;
</script>
</asp:Content>
Controller
[AcceptVerbs(HttpVerbs.Post)]
public JsonResult FileUpload(int id)
{
try
{
byte[] newImageByteArray = GetByteArrayForResizedImage(350, Request.InputStream);
byte[] thumbnailByteArray = GetByteArrayForResizedImage(150, Request.InputStream);
//Add to DB
}
catch (Exception ex)
{
// This is where the exception is caught
return Json(new { success = false, message = ex.Message }, "application/json");
}
return Json(new { success = true }, "application/json");
}
private static byte[] GetByteArrayForResizedImage(int imageSize, Stream inputStream)
{
byte[] imageByteArray;
// For some reason in IE the inputStream here is causing it to crash
using (Image imgInput = Image.FromStream(inputStream))
{
//Image processing
}
return imageByteArray;
}
fileuploader.js - qq.FileUploader
/**
* Class that creates upload widget with drag-and-drop and file list
* @inherits qq.FileUploaderBasic
*/
qq.FileUploader = function(o){
// call parent constructor
qq.FileUploaderBasic.apply(this, arguments);
// additional options
qq.extend(this._options, {
element: null,
// if set, will be used instead of qq-upload-list in template
listElement: null,
template: '<div class="qq-uploader">' +
'<div class="qq-upload-drop-area"><span>Drop files here to upload</span></div>' +
'<div class="qq-upload-button">Upload a file</div>' +
'<ul class="qq-upload-list"></ul>' +
'</div>',
// template for one item in file list
fileTemplate: '<li>' +
'<span class="qq-upload-file"></span>' +
'<span class="qq-upload-spinner"></span>' +
'<span class="qq-upload-size"></span>' +
'<a class="qq-upload-cancel" href="#">Cancel</a>' +
'<span class="qq-upload-failed-text">Failed</span>' +
'</li>',
classes: {
// used to get elements from templates
button: 'qq-upload-button',
drop: 'qq-upload-drop-area',
dropActive: 'qq-upload-drop-area-active',
list: 'qq-upload-list',
file: 'qq-upload-file',
spinner: 'qq-upload-spinner',
size: 'qq-upload-size',
cancel: 'qq-upload-cancel',
// added to list item when upload completes
// used in css to hide progress spinner
success: 'qq-upload-success',
fail: 'qq-upload-fail'
}
});
// overwrite options with user supplied
qq.extend(this._options, o);
this._element = this._options.element;
this._element.innerHTML = this._options.template;
this._listElement = this._options.listElement || this._find(this._element, 'list');
this._classes = this._options.classes;
this._button = this._createUploadButton(this._find(this._element, 'button'));
this._bindCancelEvent();
this._setupDragDrop();
};
fileuploader.js - qq.FileUploaderBasic
/**
* Creates upload button, validates upload, but doesn't create file list or dd.
*/
qq.FileUploaderBasic = function(o){
this._options = {
// set to true to see the server response
debug: false,
action: '/server/upload',
params: {},
button: null,
multiple: true,
maxConnections: 3,
// validation
allowedExtensions: [],
sizeLimit: 0,
minSizeLimit: 0,
// events
// return false to cancel submit
onSubmit: function(id, fileName){},
onProgress: function(id, fileName, loaded, total){},
onComplete: function(id, fileName, responseJSON){},
onCancel: function(id, fileName){},
// messages
messages: {
typeError: "{file} has invalid extension. Only {extensions} are allowed.",
sizeError: "{file} is too large, maximum file size is {sizeLimit}.",
minSizeError: "{file} is too small, minimum file size is {minSizeLimit}.",
emptyError: "{file} is empty, please select files again without it.",
onLeave: "The files are being uploaded, if you leave now the upload will be cancelled."
},
showMessage: function(message){
alert(message);
}
};
qq.extend(this._options, o);
// number of files being uploaded
this._filesInProgress = 0;
this._handler = this._createUploadHandler();
if (this._options.button){
this._button = this._createUploadButton(this._options.button);
}
this._preventLeaveInProgress();
};
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Apr 26, 2010
I am trying to display an image from database, and I keep ending up with an error Parameter is not valid. Bitmap bm2 = new Bitmap(targetW, targetH);
I have tried different ways but I can't get it to work (as you can see in my commented code). I am having trouble on the saving it to the database process, displaying it isn't a problem (when I had valid images)
[Code]....
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Nov 23, 2010
Im my MVC 3.0 Application, I created a helper like below;
[Code]....
And I used that helper in a linq query as below;
[Code]....
When I fire my app, it gives me the below error. LINQ to Entities does not recognize the method 'System.String GenerateURl(System.String)' method, and this method cannot be translated into a store expression. 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.NotSupportedException: LINQ to Entities does not recognize the method 'System.String GenerateURl(System.String)' method, and this method cannot be translated into a store expression. Source Error:
Line 43: public Blogs GetBlog(string urlstring) {
Line 44:
Line 45: return GetAll().SingleOrDefault(x => BlogUrlGeneration.GenerateURl(x.ArticleTitle).Equals(urlstring));
Line 46: }
Line 47:
İn my blog, the link will be like below; [URL] so I need to set the above urlgenerator class into lambada. How can I do that? What would it take to make that work perfectly
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May 20, 2010
When I move some web-based code from VS2008 to VS2010, I find it is different when it is hard to handle the Image class.
Let's take the following code as an example.
[Code]....
As I have already imported the System.Drawing namespace, I still cannot use Image.FromFile method as VS2010 detectss the Image class is in System.Web.UI.WebControls namespace.I have lots of such a kind of code in my project using Image class and I will get messed if need to modify the code from
[Code]....
Since I also used image in my variable name.
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Using C# I was trying to develop the following two. The way I am doing it may have some problem and need your kind advice. In addition, I dont know whether there is any existing method to do the same.
private static String HexConverter(System.Drawing.Color c)
{
String rtn = String.Empty;
try
{
rtn = "#" + c.R.ToString("X2") + c.G.ToString("X2") + c.B.ToString("X2");
}
catch (Exception ex)
{
//doing nothing
}
return rtn;
}
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{
String rtn = String.Empty;
try
{
rtn = "RGB(" + c.R.ToString() + "," + c.G.ToString() + "," + c.B.ToString() + ")";
}
catch (Exception ex)
{
//doing nothing
}
return rtn;
}
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[code]....
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