I had a system where I authenticate the users via .net Membership.
However now we are developing an iOS application which should call a .Net Webapi and this webapi authenticate the user under .net membership in one another project.
How could I do that ?
I am new to visual studio/ Managed C++. I don't know even in which category MSDN or Managed C++ comes in. I hope i have selected right options from 'forum category' and 'Forum'
My Question is - I want to select and process all images present in folder, if user selects a 'checkbox' named "All".
Name of images may or may not be same.
Till now, Got file path by => System String^ imgPath = objFileDialog->FileName;
& folder path by => System String^ folderPath = System::IO::Path::GetDirectoryName(imgPath);
Please help me.
Hi All,
I have been created the proxy to trace websocket traffic .It work fine when small amount data has been transferred.
In other case when transfer big amount of the data I received data in difference frame (chunk) instead of one.I need the big data as single frame (chunk) or is there any way reassemble the all the frame.
The below website has been use for the trace websocket traffic.
Best,Chetan Rajakumar
Hello!
I'm using CSharpCodeProvider to create a class with several fields dynamically. That's the code:
//определение пространства имен
CodeCompileUnit compileUnit = new CodeCompileUnit();CodeNamespace dynNS = new CodeNamespace("Dyn");compileUnit.Namespaces.Add( dynNS );
//определение класса
CodeTypeDeclaration dynClass = new CodeTypeDeclaration("DynClass");
int i = 0;foreach(string gr in Groupings){ dynClass.Members.Add(new CodeMemberField((Type)GroupTypes[i], (string)Groupings[i]));
}
dynNS.Types.Add(dynClass);
//компиляция полученной сборки
CSharpCodeProvider provider = new CSharpCodeProvider();CompilerParameters parameters = new CompilerParameters();parameters.GenerateInMemory = true;CompilerResults cr = provider.CompileAssemblyFromDom(parameters, compileUnit);
//получение типа из сборки
Assembly dynAssembly = cr.CompiledAssembly;
Type dClass = dynAssembly.GetType("DynClass");
Console.WriteLine(parameters);
But I receive an error message like "Unable to load file or assembly". What's wrong?Hi all,
When writing on to a NamedPipeServer, it's a blocking call and so till a complete read happen's it doesn't get unblocked.
We tried to read a part of data from the stream and tried disposing/closing the NamedPipeServer. This has resulted in OperationCanceledException which is not documented in MSDN for this operation.
Effectively it should have raised IO Exception.
Can someone help me out with this issue.
Three .NET Interface namely IMessage, IMethodMessage and IMethodCallMessage, but the interface relation between them are little confusing. IMethodMessage Interface is Inherited from IMessage Interface and then IMehtodCallMessage Interface are Inherited from the two Interfaces they are IMessage and IMethodMessage. My Question is that What is the need to Inherit IMessage to IMethodCallMessage because IMethodMessage already inherited from IMessage.
IMethodMessage : IMessage
and
IMethodCallMessage : IMessage, IMethodMessage
I have one module which can be called to download files using BITS APIs. Here it take three input as local path, remote URL and value for BG_JOB_PRIORITY.
In one scenario where I call download module via two different call with different BG_JOB_PRIORITY. 1st one has to download 1GB file with priority BG_JOB_PRIORITY_LOW and another call (when 1st job is active in transferring mode) to download module to download 2GB file with priority BG_JOB_PRIORITY_FOREGROUND.
I verified msdn link http://msdn.microsoft.com/en-us/library/aa362805%28v=vs.85%29.aspx which says that "Lower priority jobs do not receive transfer time until all higher priority jobs are transferred or in an error state.", so based on this 2nd job should be finished first to download 2GB file but this doesn't happens.
Based on my custom logs (in call back interface function JobModification), it seems that transfer time is sliced between these two jobs and lower size file downloaded first.
Please let me know if anyone has/had similar kind of experience and solution. How to complete high priority job first irrespective to size of file associated with it?
Thanks in advance.
Hi,
ASP.NET Runtime is unable to create control instances am getting following error:
"object reference not set to an instance of an object error"
Its unable to create each an every control on designer. If I manually create instance for one control I start getting error for next control.
The same piece of code was working fine earlier.
I performed following steps before it started throwing error:
1. I removed one HTML Input control on designer but it didn't got removed from designer.vb file, so I manually removed the same. Code was working fine.
2. Next I again added the HTML INPUT control on designer by adding an html for it. Respective declaration for it was added in designer.vb file, I didn't modified the designer.vb. But, this time it started throwing "object reference not set to an instance of an object error" for control added from designer window.
Let me know, how do I get rid of this error?
Sachin R. Chavan.
I asked this question on Stack Overflow and I thought I would post it here also. I will include the link and the post. Someone got me thinking and I tried the win api and it does not have the issue. So there is something about IO.File.Exist and Novell Win7 client.
First the bottom line...
If you use a loop on a Novell client Win7 containing IO.File.Exist(FileTest) looking for FileTest to disappear meaning it is time to move on, delete FileTest from another client, and you then you try to use the name FileTest represents, you will get a network
error. The reason I think it has to do with Novell Client Win7, is if the share is a windows share, I do not see the problem. Also, when our clients were XP SP3 (not sure the Novell version) we did not see this. As mentioned in the comment, I tried this on
a SAMBA share and did not see the issue.
Next the detail....
It is simple to reproduce
Module Module1
Sub Main()
Dim FileTest As String = "\\corp01\vol1\bbs\test.flg" 'corp01 is a Novell share'
IO.File.WriteAllText(FileTest, "")
Do While IO.File.Exists(FileTest)
System.Threading.Thread.Sleep(100)
Loop
End Sub
End ModuleThen from another client delete test.flg and the program ends as expected. Try running it again and when it tries to create it in the WriteAllText you will get the network error. It does not seem to matter who or how the file is created. I have tried to rem out the WriteAllText and create it from a different client, then start the program, delete it from the other client and still get the network error when trying to reference the name.
My Guess ....
I think the name is cached somehow. The only way to fix it is log off from windows. Another reason, if the WriteFileText is throwing the error and I try a different way of creating it, still have the error. For example in explorer I create a text file on the
share, works ok. Then try to rename the created file to my flag name, network error. I can rename it to any other file name except for the name I use as the flag file.
Hi,
I am using the below code to encode the content of *.ser file
foreach(string file inDirectory.EnumerateFiles("","*.SER")){byte[] content =File.ReadAllBytes( file ); xmlWriter.WriteStartElement("SerializedFile"); xmlWriter.WriteElementString("FileName",Path.GetFileName(file)); xmlWriter.WriteElementString("Content",System.Convert.ToBase64String( content )); xmlWriter.WriteEndElement();}
Now i have to decode the encoded content and create *.ser file, i tried with below code but the size of original *.ser file and generated *.ser file after i decode differs and if i check the content i can see some difference with the special characters.
encodedContent = xmlnode[i].ChildNodes.Item(1).InnerText;
byte[] data = Convert.FromBase64String(encodedContent);
string decodedContent = Encoding.UTF8.GetString(data);
Please help me out to solve this issue. Thanks in advance.
Regards,
Chetan.
Chetan Rajakumar
Hi Folks
I built a prototype which does the following:
1. Is a console application (for demo purposes only)
2. Was intended to show how an SSRS .Net v3.5 assembly could call a v4.5.1 SSO application to return: a.) Database Connection string b.) Report Image Library url
This works great as a standalone console application.
I've take the same "basics" of this console application and wrapped it into a dll (an SSRS Data Processing Extension).
The PROBLEM is, is that the console application instantiates as a System.MarshalByRefObject and external calls to the DLL only get instantiated as System.Object.
Here's the code:
Type myClassAdapterType = Type.GetTypeFromProgID("Net35ToNet4xAdapter.MyClassAdapter");
Object myClassAdapterInstance = Activator.CreateInstance(myClassAdapterType);
Net35ToNet4xAdapter.IMyClassAdapter myClassAdapter = (Net35ToNet4xAdapter.IMyClassAdapter)myClassAdapterInstance;
string ret = myClassAdapter.DoNet4xAction(blahblahblah);
Type.GetTypeFromProgID("Net35ToNet4xAdapter.MyClassAdapter"); works differently in the console application because everything is "in the application" (and needs not be registered)
The external call to the DLL (which is registered) only shows myClassAdapterType as being from System.Object. Here's a comparison:
CONSOLE APPLICATIONWORKS | Registered DLL CALLED EXTERNALLYFAILS |
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?Type.GetTypeFromProgID("Net35ToNet4xAdapter.MyClassAdapter") {Name = "__ComObject" FullName = "System.__ComObject"} [System.RuntimeType]: {Name = "__ComObject" FullName = "System.__ComObject"} base: {Name = "__ComObject" FullName = "System.__ComObject"} Assembly: {mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089} AssemblyQualifiedName: "System.__ComObject, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" Attributes: Public BaseType: {Name = "MarshalByRefObject" FullName = "System.MarshalByRefObject"} ContainsGenericParameters: false DeclaringMethod: 'Type.GetTypeFromProgID("Net35ToNet4xAdapter.MyClassAdapter").DeclaringMethod' threw an exception of type 'System.InvalidOperationException' DeclaringType: null FullName: "System.__ComObject" GenericParameterAttributes: 'Type.GetTypeFromProgID("Net35ToNet4xAdapter.MyClassAdapter").GenericParameterAttributes' threw an exception of type 'System.InvalidOperationException' GenericParameter 'Type.GetTypeFromProgID("Net35ToNet4xAdapter.MyClassAdapter").GenericParameterPosition' threw an exception of type 'System.InvalidOperationException' GUID: {4b5ad204-13fc-4c9f-9dc4-f0a6ec775d4f} HasElementType: false HasProxyAttribute: false IsAbstract: false IsAnsiClass: true IsArray: false IsAutoClass: false IsAutoLayout: true IsByRef: false IsClass: true IsCOMObject: true IsContextful: false IsEnum: false IsExplicitLayout: false IsGenericParameter: false IsGenericType: false IsGenericTypeDefinition: false IsImport: false IsInterface: false IsLayoutSequential: false IsMarshalByRef: true IsNested: false IsNestedAssembly: false IsNestedFamANDAssem: false IsNestedFamily: false IsNestedFamORAssem: false IsNestedPrivate: false IsNestedPublic: false IsNotPublic: false IsPointer: false IsPrimitive: false IsPublic: true IsSealed: false IsSerializable: false IsSpecialName: false IsSzArray: false IsUnicodeClass: false IsValueType: false IsVisible: false MemberType: TypeInfo Module: {CommonLanguageRuntimeLibrary} Namespace: "System" ReflectedType: null StructLayoutAttribute: {System.Runtime.InteropServices.StructLayoutAttribute} TypeHandle: {System.RuntimeTypeHandle} TypeInitializer: null UnderlyingSystemType: {Name = "__ComObject" FullName = "System.__ComObject"} | ?Type.GetTypeFromProgID("Net35ToNet4xAdapter.MyClassAdapter") {Name = "MyClassAdapter" FullName = "Net35ToNet4xAdapter.MyClassAdapter"} [System.RuntimeType]: {Name = "MyClassAdapter" FullName = "Net35ToNet4xAdapter.MyClassAdapter"} base: {Name = "MyClassAdapter" FullName = "Net35ToNet4xAdapter.MyClassAdapter"} Assembly: {Net35ToNet4xAdapter, Version=1.0.0.0, Culture=neutral, PublicKeyToken=09abb560dc6eacfe} AssemblyQualifiedName: "Net35ToNet4xAdapter.MyClassAdapter, Net35ToNet4xAdapter, Version=1.0.0.0, Culture=neutral, PublicKeyToken=09abb560dc6eacfe" Attributes: Public | Serializable | BeforeFieldInit BaseType: {Name = "Object" FullName = "System.Object"} ContainsGenericParameters: false DeclaringMethod: 'Type.GetTypeFromProgID("Net35ToNet4xAdapter.MyClassAdapter").DeclaringMethod' threw an exception of type 'System.InvalidOperationException' DeclaringType: null FullName: "Net35ToNet4xAdapter.MyClassAdapter" GenericParameterAttributes: 'Type.GetTypeFromProgID("Net35ToNet4xAdapter.MyClassAdapter").GenericParameterAttributes' threw an exception of type 'System.InvalidOperationException' GenericParameterNet35ToNet4xAdapter.MyClassAdapter").GenericParameterPosition' threw an exception of type 'System.InvalidOperationException' GenericTypeArguments: {System.Type[0]} GUID: {a6574755-925a-4e41-a01b-b6a0eef72df0} HasElementType: false IsAbstract: false IsAnsiClass: true IsArray: false IsAutoClass: false IsAutoLayout: true IsByRef: false IsClass: true IsCOMObject: false IsConstructedGenericType: false IsContextful: false IsEnum: false IsExplicitLayout: false IsGenericParameter: false IsGenericType: false IsGenericTypeDefinition: false IsImport: false IsInterface: false IsLayoutSequential: false IsMarshalByRef: false IsNested: false IsNestedAssembly: false IsNestedFamANDAssem: false IsNestedFamily: false IsNestedFamORAssem: false IsNestedPrivate: false IsNestedPublic: false IsNotPublic: false IsPointer: false IsPrimitive: false IsPublic: true IsSealed: false IsSecurityCritical: true IsSecuritySafeCritical: false IsSecurityTransparent: false IsSerializable: true IsSpecialName: false IsUnicodeClass: false IsValueType: false IsVisible: true MemberType: TypeInfo Module: {Net35ToNet4xAdapter.dll} Namespace: "Net35ToNet4xAdapter" ReflectedType: null StructLayoutAttribute: {System.Runtime.InteropServices.StructLayoutAttribute} TypeHandle: {System.RuntimeTypeHandle} TypeInitializer: null UnderlyingSystemType: {Name = "MyClassAdapter" FullName = "Net35ToNet4xAdapter.MyClassAdapter"} |
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If anyone can help I'd appreciate it. I have a MS support call placed but I'm going no where with this.
Thanks
Rob
Rob K
I have had long running issues with System.IO.Ports.SerialPort, as to many other people online. My issue is as follows:
We frequently use USB to Serial adapters as very few PCs nowadays have serial ports. As long as the adapter remains connected, everything works fine.
The minute you unplug the adapter, all ____ breaks loose - the application uses maximum CPU and there is a massive increase in memory usage. It's VERY easy
to reproduce - just get any Proflic based USB to serial adapter (VERY common) and plug it in. Create a simple app and add the following:
class Program
{
static void Main(string[] args)
{
SerialPort port = new SerialPort();
port.PortName = "COM3";
port.Open();
Console.ReadKey();
}
}
Run the app, and after connection, unplug the USB. Thats it - it's just opening the port, nothing special. This needs to get fixed desperatley as it's really punishing developers who want to integrate serial based hardware. It's not even restriced to the Profilic
devices. We've seen it occur with the Zensys Z-Wave SDK when using with a USB Z-Wave adapter (which actually creates a serial port).
Please, MS - let us know how to fix this!
Hello,
Issue description:
1. I am limited with .Net v4.0 . Visual Studio versions I tried 2010, 2012, 2013
2. Platform where my application is running is x64.
3. I have COM to USB device converter.
4. My test application just opens port and nothing else. I don't even have data received event listener.
As soon as I disconnect COM to USB converter, the amount of memory used by my test application start growing. At least 10 MB per minute.
Memory dump shows me that I have hundreds of new objects created
Type System.Threading.OverlappedData New objects 246368 New bytes 16753024 Dead bytes 0 Bytes delta 16753024 Type System.IO.Ports.SerialStream+SerialStreamAsyncResult
New objects 246353 New bytes 9854120 Dead bytes 0 Bytes delta 9854120 Type System.Threading._IOCompletionCallback New objects 246352 New bytes 6897856 Dead bytes 0 Bytes delta 6897856
using System;
using System.IO.Ports;
using System.Text;
namespace OpenSerialPortApp
{
class Program
{
static void Main(string[] args)
{
var Sp = new SerialPort
{
StopBits = StopBits.One,
BaudRate = 9600,
DataBits = 8,
Parity = Parity.None,
Encoding = Encoding.UTF8,
PortName = "COM5"
};
Console.WriteLine("Port Created");
Sp.Open();
Console.WriteLine("Port started");
//No I just unplug my COM to USB converter.
Console.ReadKey();
}
}
}
How I can deal with this problem ?
I tried to call Close and Dispose on serial port but it makes absolutely no difference.
Thank you for any advise!
Hi,
I am looking for a .NET "scanning API" to scan the documents from .NET application, is there any any good example I can use for this. I want to launch .NET scanning application from another Visual basic application.
Thanks,
Rajeev
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. |
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hi there,
ive got, say the following sample code:
[Flags]
public enum Types
{
Type1 = 1,
Type2 = 2,
Type3 = 3,
Type4 = 4,
Type5 = 5
}
and a variable holding the following string:
var stringTypes = "Type2,Type4,Type5";
How can i convert this string into a property/field which returns these 3 string as 3 piped enum values eg.
Types expected = Types.Type2 | Types.Type4 | Types.Type5;
thanks