Hello everyone, I have a abstract class called DalBase and in that class I have a couple of methods. One of the method that I have is called BeginTran() and this class initializes a private Transaction object. I also have a method called CommitTran() that disposes the private Transaction object,...more >>

I'm having a problem with the Convert.ToSingle and the O:C formatting rounding off my floating-point numbers. When I .ToString a float, it rounds the number. It also rounds it if I use the "C" or "F" format strings (i.e. num.ToString("C")) How can I accurately display a float/currency v...more >>

I'm using a 5x5 convolution matrix to do some image processing. (I don't really know much about image processing). I lose 2 pixels from the edges of the image. When I apply any 5x5 matrix in photoshop however, it doesn't lose any pixels around the edges. So I'm wondering what is usually done with...more >>

Hi, I would like to be able to implement the IActiveDesktop interface from the shlobj.h header file - I would like to know how I can create a .Net assembly from this file so that I can access the ActiveDesktop class etc. I would like a tutorial or sample working source code - just to get up ...more >>

hi, i am 3 xml files containing train timetables, the columns in each xml file are "departuretime" and "destination". the difference between the 3 files are they contain train times for 3 different train companies. i want to display 3 columns (1 for each company), and display (in HTML) the ...more >>

I need to POST some hidden fields to a page, which i need to load in the browser window.. i've tryed writting out the hidden fields and doing a response.redirect/response.transfer but these don't send accross the hidden fields.... so my question really is how do i send hidden fields and trans...more >>

Hello, Is there an easy way to add the TAB character "\t" in a combobox ? If i do it, instead of alignement I have a 'square' character. Thanks....more >>

If some function just like SetLength(byteData,100) .....? ...more >>

hi, can some one tell me snip code to get reference to web user controle (.ascx form) aspx "table" and its rows & cells. regards Sam. ...more >>

I think I know the outcome to this question (please forgive me because I know it is probably asked a thousand times!) Does Microsoft plan to bring out some kind of mechanism to compile directly to machine code (i.e. bypassing IL (or further protecting the IL code). I know that there is a third...more >>

I have C# .NET Standard 2003 (not Professional) but did not a Installer project template in the project template list. How would I use that? I have one DLL that my program uses. (I needed controls derived from other controls of my own creation. Without the DLL, the form editor would not acce...more >>

I have a Windows program C# .NET solution where when I update its XML documentation, some tags are not recognized and turned into the corresponding HTML. Those tags include <c>, <code>, <para>, <paramref>, and <exception>. <remarks> works; I have not tried <include>. Is this a bug in Studio o...more >>

how to split the string which the separator is TAB.e.g. string a =3D "abc bcd abc"; a.split('Tab'); Does it need to use some special character...which like vbTab in VB6... Million Thanks...more >>

How do I get the "last 16 bits" from a 32 bit integer using C#? (I guess this means the right most 16 bits?) Regards, Drew ...more >>

The documentation is not clear on the exact behaviour of the Marshal.PtrToStructure method and whether it copies the contents of the IntPtr region to a new managed object or whether it creates the managed object to reference the same region of memory. Question 1: should I call Marshal.FreeCoTa...more >>

I have a C# .NET program which does without a normal titlebar for its main window. Trouble is, I still want the user to be able to access select commands while the program is minimized. (I provided replacements for the Minimize and Close buttons.) I understand how to modify the system menu. I...more >>

Hello, Do you know how to mimic PHP md5 function? I'm using followin function, but the results are different with PHP result when using Unicode (UTF-8) characters. Someone please help me fix this... Try compare PHP's result and following function result with this string "Tiếng Việt" ...more >>

I have been a Software Developer for 25 years mostly PC based for the last 20. I have been earning my Doctorate for the past 4 years and am now doing my Dissertation. The theme of my dissertation is the relationships between job characteristics, job satisfaction and turnover intention among Software...more >>

I am pretty new at C#, so bare with me. I want to be able to read a local HTML file and display it in a browser window within my application. I also want to submit that page to my application and generate a "Post" to a web server and read the contents back and display back into the same browser wi...more >>

I use OleDbAdapter to fill my dataset from Access database and tables with autoincrement id columns.Also i created xsd schema for my dataset The problem is that the dataset automatically add neu unique ID which is not correspond to realy added record ID in the database For exp. in database i have...more >>

I am writing a Windows MDI application in C#. I would like to cast an object to a specific type. I know that the object is of a compatible type. The code below shows what I would like to do, but does not compile, where the cast "(c.ItemType)" produces the error "type or namespace could not be foun...more >>

Anyone know it is possible to change the size of a toolbar button either in the designer or in the code? in the designer it's greyed out while when I try it in the code I get a compiler error. Please advise, thank you....more >>

I am desperate for help=2E I am at a loss=2E I have a dataset with 4= columns in it=2E The first column is an actual column from a= database table=2E The last three columns are hard codded values of= 0=2E I am using this dataset to populate a datagrid=2E The datagrid= has a datagridtablestyl...more >>

Hi all! I have a table like Table myTable = new Table(); Now, I want to publish the table as part of a webpage and as part of a word document. I tried to convert the table, but the compiler say "Cannot convert type 'System.Web.UI.WebControls.Table' to 'System.Web.UI.HtmlControls.HtmlTable'...more >>

I have an async OnStore event written in c# and registered in exchange 2003. Everything seems to be working fine other than the SaveToFile(). If there is an error in the iMessage.DataSource.Open ( ie. the message has moved ) the expected exception is raised and caught. However when the strm.Save...more >>

When I use the ExitWindowsEx function in my C# console application it doesn't reboot. Any ideas why?...more >>

I'm having problem. I want to have a block of code run, after a user edits the label of a node, so I put the code in the event method of the afterLabelEdit event. The problem is that this code is called even before the label is finished being edited - its being called as soon as beginEdit is calle...more >>

Hello I have Array of 50 ints. I want to receive random permutation, so in each int will be different number from 0-49. Is there any class for permutation ? Thanx Michal ...more >>

I'm new to C#. What is the best (in terms of programmability and use) data structure to use to maintain an array of information with containing 3 fields of differing types. For instance: string name int age bool gender If I created an array of structs would I be able to retri...more >>

hi i want to get the error code when an error occurs. is catch(Exception ex) { ex.GetHashCode() //will this return a unique number for every error? } ...more >>

I'm seeing what looks like a leak with Hashtable, but guessing it is something I'm doing - void func1() { Hashtable hash = getHash(); //Loop thru assorted data, check to see if data exists as key in hashtable. hash.Clear(); hash = null; } Hashtable getHash() { //...more >>

Hi, I'm really in the middle of the crossroad over here. My app recieves an XML files and process it. This XML file contain some data and relationships which are based on bussiness rules. My app based on these rules should make a validation to process it or not further down...... While I'm ne...more >>

I am using the following query: query = "insert into SystemEventsProperties (ID,PName,PValue) values (@id,@pName,@pValue)"; OdbcParameter param1 = new OdbcParameter(); param1.DbType = DbType.Int32; param1.ParameterName = "@id"; param1.Value = maxId; OdbcParameter param2 = ...more >>

When I unload an appdomain I have created, I always get the following exeption: System.Threading.ThreadAbortException: Thread was being aborted. Before calling the Unload() method, I set to null all the references I have to objects in the AppDomain. Any idea? Thanks, José ...more >>

I have created a custom control, and for one of its properties it is possible that the value may be null. However, at design time when a null value is assigned, I get the error "The object 'myControl1' returned null for the property 'TheProperty' but this is not allowed". The property itself ...more >>

hi i have a set of bitmaps in an array. and i want to add it to a imagelist so that i can show those images in my treeview. imageList2.Images.Add (Image.FromHbitmap (picture.Bitmap)); //cant use this gives me an error do i need to convert from bitmap to a memory stream? thanx ...more >>

Would like help with a (I think) a common regex split example. Thanks for your example in advance. Cheers! Source Data Example: one "two three" four Optional, but would also like to ignore pairs of brackets like: "one" <tab> "two three" ( four "five six" ) Want fields like: fiel...more >>

Hi, how can i convert int/long/? to byte[]: public byte[] GetBytes( int i ) { // . . . } public void Foo() { byte[] b = GetBytes( 1001 ); // . . . } thx Kimmo Laine ...more >>

How can I step into my ATL/COM object source code from my C# project? Both my C# project and my C++ ATL/COM project have been added to the same solution. My C# project uses a project reference to my ATL/COM project. I set my ATL/COM project DebuggerType=Mixed. I did not see a similar set...more >>

hi i have the following code in my project ArrayList pictures = (new Pictures()).GetAllPictures(); allPictures.DataSource = pictures; allPictures.DisplayMember = "pictures.ToString()"; //pictures.ToString returns the names of the pictures. allPictures.ValueMember = "pictures.Bitmap"; ...more >>

When I use a COM control (via add reference) it generates interop when the com is dragged into a form it creates axinterop. what is more interesting is the axinterop works fine, the interop causes com exception error. i know these inherit from different base classes, but why the problem. ...more >>

Hi, I wonder if it is possible to get hold of avaiable memory (only RAM) on a machine through .Net class library? I do not want to call windws API. I would like to use this to decide how many alive threads my program could have each time the program runs. I use a number of threads in a simulatio...more >>

Anybody know how to convert a string into a bstring in c#? I'm working with a com component from which one of the functions has an argument of type bstring. Thanks in advance, Mick...more >>

Hello I emply a "plug-in" architecture for a .NET Windows service. At OnStart, the service browses for DLL's in in sub-folders and loads them dyanamically using Assembly.LoadFrom() The service executable is placed in its own folder with the assemblies required for its successful complilation....more >>

hi i was going thru some samples and i couldnt understand what this line means public delegate void DataListItemEventHandler(object sender, DataListItemEventArgs args); what is a delegate and what are delegates used for? thnx ...more >>

Anyone know of a tutorial on building Winforms application with a datagrid and ADO database using Stored procedures? I am fluent in Delphi and migrating to C# and don't understand why the difficulty with datagrids......more >>

The flow of my app is as follows 1) Pull up an order and change the quantity of a textbox item. (Ex: change the quantity from 1 to 2 2) Click on the Update button 3) When the page posts back you should see the updated quantity of the item. (by the way, in some cases there will be multiple lines f...more >>

Hey all I'm trying to late bind a VB6 object in Component Services using c#. I've been able to do tons of late binding, but now that I have a com+ object that doesn't have a method exposed directly, I'm having tons of trouble. (lots of research, lots of newsgroups, but no success! I have an exis...more >>

This has most likely been asked before, but Google still won't allow certain search strings such as "public:". In CPP, you can declare a class such as... class Foo { public: Foo() { } ~Foo() { } int m_Bar1; int m_Bar2; int m_Bar3; }; If an object is bas...more >>

Hello I am learnign Dot NEt I have implemted 1. remote object 2.Listener 3.Client Listener started and listening to requests Client started and able to nstantiate remote object But when a Remote object method is invoked, following error happens Error System.Runtime.Remoting.RemotingExcep...more >>

I read somewhere that a bool is 1 byte unless if it's in a array, then it will be 2 bytes. is that true? if so, any explaination to why that is?...more >>

Hello, I drew some lines and rectangles with pen and brush on a picturebox, i want convert these lines into bitmap. How can i do that?? Thanks in advance! MAY ...more >>

I see Session variables time out after 20 minutes (or whatever number of minutes you define) I want to have some variables that won't time out, but they only occupy very small amounts of data, say 10-20 bytes per user, so I think it won't too much of a performance impact to store it in the web serv...more >>

Hi there, I have a form with a Datagrid on it; Datagrid is bound to an untyped dataset. When I fill the dataset (with an oleDBDataAdapter), the data is not diplayed directly in the grid; I have to expand some control that appears in the datagrid, and then select the table name before the dat...more >>

Hi All I'm calling an old VB6 program from a C#.NET application using a Process component and I was wondering if the VB6 EXE can return an exit code different than 0 I know I could use the Environment.ExitCode property or even the Environment.Exit method if the called app was written using VB.NE...more >>