.net

Expression Tree Binary Expression for an 'In' operation

I'm trying to build an expression tree (still) but getting further! I need to create a BinaryExpression to perform an 'In' comparison between a Member and a collection of items. Hence, the expression should return true if the member is contained within the items. This obviously does not exist: Expression.MakeBinary(ExpressionType.In, m...

event handling for button click in visual c++

i am new to this platform and i want to retrive the data from textfield on the click of a button ,how to do this please help me ...

Applying Test Driven Development to a tightly coupled architecture

Hi all, I've recently been studying TDD, attended a conference and have dabbled in few tests and already I'm 100% sold, I absolutely love it TDD. As a result I've raised this with my seniors and they are prepared to give it a chance, so they have tasked me with coming up with a way to implement TDD in the development of our enterprise...

.NET Oracle Provider: Why will my stored proc not work?

I am using the Oracle .NET Provider and am calling a stored procedure in a package. The message I get back is "Wrong number or types in call". I have ensured that the order in which the parameters are being added are in the correct order and I have gone over the OracleDbType's thoroughly though I suspect that is where my problem is. Here...

RegEx - Take all numeric characters following a text character

Given a string in the format: XXX999999v99 (where X is any alpha character and v is any numeric character and v is a literal v character) how can I get a regex to match the numeric characters following the v? So far I've got 'v\d\d' which includes the v but ideally I'd like just the numeric part. As an aside does anyone know of a tool ...

Can I get Raid disk status by using PS?

I have a HP server with Raid 5. Port 0 and 1 are used for data & OS mirroring. The software come with the Raid 5 is Intel Matrix Storage Manager and there is manager console as windows based api to view all the ports, including their status. Now they are all in Normal status. I am not sure if the OS/Windows has some APIs or .Net classes...

System.Net.WebProxy in .NET Client

I don't yet have a good understanding of how the network is set up at my current client, but here is my issue. The vendor has a normal URL, but it might be a leased line. I have a .NET program that calls an external .asmx service. If I go to IE, Connections, LAN Settings, and uncheck "Automatic detect settings" and uncheck "Use Autom...

What are all these null collection entries in my DataContract XML?

Does anybody know why the NetDataContractSerializer might add "nil" entries in a serialized collection? For example, <Jobs z:Id="17"> <_items z:Id="18" z:Size="4"> <JobRecord z:Id="19"> <Name z:Id="20">Job1</Name> </JobRecord> <JobRecord i:nil="true" /> <JobRecord i:nil="true" /> <JobRecord ...

How do i pipe stdout/stderr in .NET?

I want to do something like this ffmpeg -i audio.mp3 -f flac - | oggenc2.exe - -o audio.ogg i know how to do ffmpeg -i audio.mp3 -f flac using the process class in .NET but how do i pipe it to oggenc2? Any example of how to do this (it doesnt need to be ffmpeg or oggenc2) would be fine. ...

Managing of shared resources between classes?

Imagine that I have a several Viewer component that are used for displaying text and they have few modes that user can switch (different font presets for viewing text/binary/hex). What would be the best approach for managing shared objects - for example fonts, find dialog, etc? I figured that static class with lazily initialized objects...

Maximum number of trace sources in app.config

Is there a maximum number of trace sources for app.config, and by definition listeners as well? ...

Writing custom sections into app.config

I want to save some custom data into application configuration file and I need to create some custom sections in app.config. Reading custom data from app.config is simple task, but I can't write information from my programm into app.config. For finding solution of this problem I create test project. For reading data from custom section ...

EWS 2010: Public Folder Problem using .NET

I've recently coded a .NET Console app using C#. It's purpose was to read the emails within a specific folder, parse them for specific values and save them to a database. Our email system, at the time I originally coded this, was Exchange 2003. However, I was made aware we would soon be upgrading to Exchange 2010: ergo, I built the code...

Why the concept of "Covariance" and "Contravariance" are applicable while implementing the methods of an interface ?

The use case is some what like this: public class SomeClass: IClonable { // Some Code //Implementing interface method Public object Clone() { //Some Clonning Code } } Now my question is "Why is it not possible to use "SomeClass(As it is derivd from objec)" as a return type of Clone() method if we ...

Which is the best .NET image capture API for me to use?

I have been tasked with integrating image acquisition into a .NET application and I have been looking for an API to use for performing this function. I have come across several "standard" APIs, some have been in existence for a long time, some not so long. I have looked at references to ISIS, TWAIN, WIA, and SANE (said to be mostly *ni...

ProtectedData.Unprotect() after Impersonate()

The following code doesn't work: IntPtr token = Win32Dll.LogonUser(“user1”, “mydomain”, “password1”); WindowsIdentity id = new WindowsIdentity(token); WindowsImpersonationContext ic = id.Impersonate(); byte[] unprotectedBytes = ProtectedData.Unprotect(passwordBytes, null, DataProtectionScope.CurrentUser); password = Encoding.Unicode.Get...

Destructors not called when native (C++) exception propagates to CLR component

We have a large body of native C++ code, compliled into DLLs. Then we have a couple of dlls containing C++/CLI proxy code to wrap the C++ interfaces. On top of that we have C# code calling into the C++/CLI wrappers. Standard stuff, so far. But we have a lot of cases where native C++ exceptions are allowed to propagate to the .Net wor...

The extern alias 'xxx' was not specified in a /reference option

I have two assemblies that unfortunately define the same type in the same namespace. I'm trying to use a an extern alias to work around the problem. In the Visual Studio IDE I have set the "Aliases" property of the reference to my alias. This is supposed to change the C# compiler command line to be something like this: /reference:MyA...

How can I compose a WCF contract out of multiple interfaces?

I've got multiple interfaces. All of them should be inherited and exposed by a single contract interface. interface A { void X(); } interface B { void Y(); } interface C: A, B {} // this is the public contract How is this possible? I can't add ServiceContract to A and B because that would lead to multiple endpoints. And I don't want ...

Find by unique key in xsd?

Im using xsd:unique in an xsd generated code. How do I get an item by the unique key? I just need the Rows.Find method, but for unique keys in addition to the primary key. ...