C# / C Sharp Forum

why implement icloneable which seems to involve writing public object Clone() { return this; } when I can do myobject o1 = new myobject() myobject o2;

If instant messaging uses IP and a Port to communicate, how do the applications work behind a NAT? Hi Matt, ALL tcp protocols ( HTTP, TCP, etc ) use IP and ports cause those are the basics elements of the protocol. If you want to know how NAT works take a look at google for "NAT explained"...

Hi, I've a windows' form application written in C#. I want to drag a url's link from a website application onto my windows' form TreeView control. I've been able to achieve the following 1.) The description of the mouse consor when draging a TreeNode within the TreeView control using DragOver event. 2.) Draging TreeNode from one Node to...

i, Anyone can send me a code exaple to customize the Window Title Bar? I need to change the color and the Control Buttons. Thanks in advance. Diego

Hello: What namespace do I need to import in order to use the description attribute in c#? I have class with custom properties and I would like to have a description of the properties displayed on the property page. Here is the format I'm using:

HI All, I have an Image. I want to clip a portion of it and copy to another image. How to do this? I know the bounding rectangle to clip. Any suggestions please. Thanks for your time and help. Regards

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Hi All, Any suggestions appreciated. I am trying to do a string search through a comboBox list, have created a simple test which is listed below. The problem I am having is, every time a key is pressed it echoes the char back to the combo twice. For example, if I type D in the combo I get back Dd. The following app works OK if I use...

Hi, I am writing a program that have some filenames collected in a List View. Then I need to display the correct icon for each of them according to the extension of the file. In the document I found that I can use the "Path.GetExtension()" to retrieve the extension of the file. But, how to get the icon from the extension that display in...

Hi All, Did somebody see any standard library to calc CRC64 from something, string, byte,... It least CRC32, although CRC64 would be more helpful. I need to make a strong file control using this schema. Regards, Dmitri.

You have certainly noticed that PropertyGrid control shows Point, Size, Array, etc. properties of objects with the + sign left to it, and by pressing it you can expand child properties of Point, Size, etc... (like X, Y, Height, Width)! You can edit them one by one, and you get better look on every one of them (especially for arrays). ...

I've got a class that contains a few public properties, and a public ArrayList called Messages. The ArrayList will store other instances of this class (thus, creating a tree). My constructor takes 2 strings that just set properties on the class. Adding a new Message into the ArrayList of another Message works fine: ...

I've dealt with inheriting classes and overriding methods etc., but I keep seeing loads of examples that override WndProc, such as http://www.codeproject.com/cs/miscctrl/treeview.asp What's this all about? The code looks pretty nasty, but there are so many C# examples out there writing things this way, I'm sure I'm missing something...

If I have written a C# .dll file, how can I use the .dll file in the C++6.0? Can anyone give me a simple example? Thank you!!! regards, Frank

Hi, I am trying to write an application that should get the default security credentials from the System.Net.CredentialCache, I am not sure what is the correct procedure to use it, and would obliged, it someone could help me in its correct usage. Thanks

Hi all, Let me explain my problem , I need to transform 1 xml file to html using Xsl , It works fine , but my problem is how to do it.I have 1 xml file and 4 xslts! divided in 2 groups. What I need to do is within C# chose 1 xslt template from the first group and another one from the second group , "merge" them and transform to html. I have...

Hello! I've got a class, representing Windows Form (Form1); When I launch new thread user interface e.g. Form1 stops responding until the worker thread is completed. So the question - how this can be avoided. Roughly speaking I need to perform some job after the button click and while this job is completing user GUI can respond.

I have user controls(.ascx) programmed to function as modules on the same page - default.aspx. As you would be well aware, default.aspx has the normal html stuff:- <%@ Page language="c#" codebehind="default.aspx.cs" inherits="xmlportal.read" autoeventwireup="false"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" > <HTML>...

Hi. Can you help me on this? I have the following: MyStruct myStruct = new MyStruct (); Then a function filled up myStruct. Now I need to read the struct data byte by byte because I have a "dwParam1Offset" and a "dwParam1Size" in it that contains an unicode string which I need to have. Is there any way of retrieving this information?...

Hello all! I'm fighting with this little problem. I'm trying to retrieve data from a table in SQL Server 2k. I'm dead. The only result I get is retrieving the headers of the columns - no data in it actually :/ I'm probably missing something on the way. Could somebody explain me how do I get data and even WHERE I should retrieve it to?...

I have an application that is computationally intensive. It will read and process a DB/2 database containing over two million records. My initial design was to build the application using C++, MPI and a Linux cluster. However, rather than invest in the hardware and software to do this, I was wondering about the feasibility of building it in...

I am interfacing to a non .NET app and one of the params is of type variant. In C# it is asking for an object. I went down that path with no luck. I ran across using "marshal as" to convert an object to a variant. I cannot see how to do this? I have 10 params to send a method by reference as type variant. Is there an easy way to do this? Any...

Hi there!!! I'm looking for any resources on the subject. Any help will be appreciated! -- Vadym Stetsyak ICQ 161730125 He, who commands the past - commands the future

Hi all, I am new to C#, I am trying to use a 3-party dll that require me to setup my own call back routine in a structure. All is good with in C++ if caller in c++ but in C# I am lost. The dll require me to pass in the following: typedef struct my_fn_in_dll { unsigned short version; char * caller;...

I would like to do things when my object goes out of scope, like disconnect TCP/IP streams, serialize collections to files and so on... Would I implement my cleanup code in Dispose() ? Is this correct? class A : IDisposable { A()