I am fairly new to C# development. I have read a number of articles about developing messenger applications, but they all assume that it is operating internally and that the IP address of the client is known. I would like to develop a messenger-esque service that will communicate live database i...more >>

Hello, I have a form that contains a listview on the left side and a column of buttons on the right side. Only some of the buttons do I want enabled all the time. The other buttons should be enabled only if something is selected in the listview. That part specifically works but not very ...more >>

I am using Ajax control(Update Panel) in my web page(ASP.Net 2.0) and putting Report Viewer(Sql Server Reporting Services 2005) Control in it. When I am displaying any report it is coming ,But Report Viewer Toolbar is not working Ex Print Command Button and if I try to move to next page I...more >>

Hi, I have this code that makes the form as an MDIChild: chartWindowController.GetForm().MdiParent = _expertTradeMainFrm; chartWindowController.GetForm().WindowState =FormWindowState.Normal; chartWindowController.GetForm().Show(); The above code sni...more >>

Hi all, I want to read csv file into datatable. Is there any csv reader and writer available for freeware. I am reading csv file using schema.ini file. I don't want this dependency. The problem while reading csv is that datatype depend on first 8 or 16 rows depend in value set in registr...more >>

Hi all I have two coloumns in a excel worksheet where the first coloumn is a header and the second coloumn is a corresponding value. Also i have a text file That contains header and values in a tabdelimited format. Now the requirement is like I have to compare the Headers in excel with the h...more >>

Hi I have a list of about 50 text items (strings) that I would like to add to about 5 combo boxes at various times depending on if a user clicks on the OK button. I have tried to code an example such as: String ArrayList arr = new arr {"cat","dog","pig"}; this.cbo1.Items.Add(arr); bu...more >>

Dear All I have a very urgent requirement if somebody can help!!!!!!!!!!!!!!!!!!!!!! i have a requirement to upload a file through a remote web page. Speaking more clearly i have a excel addin that will pick some values from the cells and create a text file, after that using a web page url...more >>

So, I'm trying to learn how the Regex class works, and I've been trying to use it to do what I think ought to be simple things. Except I can't figure out how to do everything I want. :( If I want to take a string and break it into individual lines based on a specific pattern ("\r\n" in...more >>

Hi all, I have a TimeSpan which i get my subtracing a date from a date. TimeSpan ts (Dim ts As TimeSpan) ts = parsedDate.Subtract(DateTime.Now) i get different values for Hours and TotalHours. In my case i was geting -15 and -39. The difference between two is 24 (i know it is obvious)....more >>

Hi, I have several processes P1...Pn and every process is running the thread T1. The proces P1 signales the named event E. I want that when the event E is signaled, every thread T1 in processes P1..Pn will wake up and invoke a delegate. Than this thread should wait for the next time, when ...more >>

i want to prevent a form from closing.. to do this i want to handle the formClosing or FormClosed events. from here i want to prevent the form from closing. New instance of same form should not be used. is there any way to do this? is it posiible to do the same thing with anycode? [i...more >>

I have a windows form created in C#, there is web link inside it. I would like the default browser being launched if the link is clicked on. Does anyone know the easiest way to do so? Thanks Charles Zhang...more >>

I've read a few posts on the stored procedure vs dynamic sql debate. I ran a few performance test for myself and it appears to be a wash. Given that, I'm leaning toward dynamic sql mostly because it would mean one fewer place to have things. But, before we go that route we wanted to ask t...more >>

how can we handle the FormClosed and FormClosing events in C# i am able find those events in VB.NET application Code part.(Form1 Events) i don't find that in the C3 how can i handle those events ...more >>

Hi Guys, Does anyone know a way to view tracing from a Forms Application in real time? Currently our application traces to log files, but these are cumbersome and have to be manually refreshed. For Console applications we simple trace to Console.Out. Any help is appreciated. Thanks, Jam...more >>

this.Context.Cache.Insert["lastUpdateDateTime"] = lastUpdateDateTime; When I retrieve lastUpdateDateTime is always null if the web method call is subsequent to the one which set it. Why??? Thanks, Luigi. ...more >>

Hello, I have a web application running on IIS, What I wanna do is to obtain server's ethernet card's mac address in order to use this address for licensing issues I have developed my web app on vs.net 2005 + sql server 2005 + SBS Server + IIS 6.0 + My web app can obtain this add...more >>

Hi all, I want to insert an image any location (x, y) on RichTextBox or PictureBox (or any on component supported drawing too). Can I do this? or How can I do this, please show me a way ? Thank you E.Miman ...more >>

Hi, I need to combine several bitmaps together to form a single bitmap. Can anyone show me some similar sample code? Thanks. AJ...more >>

Guys, I have a need of replacing the content of the tested value with 1 or 0, depending if the value has content or not. 1 for value, 0 for empty. I would like to accomplish this thru a regular expression. Does somebody have an idea on how to do this? Regards, Robson Siqueira ...more >>

I'm currently trying to load an instance of a given class within a secondary appDomain and access it from within my main AppDomain. Everything is fine and working if the class in the second AppDomain catches any potential exception. However, if I throw an error within a method that is implemen...more >>

I have a question that maybe somebody can help me out. I have a gridview that is bound to a sqltable, and I have created two template columns. I am having problems getting the sorting to work. I turned on the Allow Sorting property but when I click one of the columns that is bound, it wil...more >>

I must have looked searched in 500+ places that showed up in Google searchs, but not one has an example of what I want to do. I have a Listbox on a User Control because I want to control the visibility and/or presence of the Listbox and associated label, and I want to encapsulate some of assoc...more >>

I was wondering if anyone knew of any resources that would help me build something akin to the VS.NET form designer? Meaning, say I have a Button object on my form. I want it to have that kind of border around it, with the "handles" at each corner (and in the middle of each side) that allows the...more >>

I've seen studies before showing that it is better to rewrite code when more than 25% (or whatever) of the code needs to be changed. I can't seem to locate any references for that at the moment. Do any of you have references for that type of article? Thanks. ...more >>

Any ideas on how to get the width of a string in pixels? Thanks, Randy ...more >>

How do I set this expression up for either IS NULL or IS NOT NULL? I am trying to check to see if an incoming string has either of the two values. new Regex(@"^([^<>=]*)\s*IS NULL\s*\s*IS NOT NULL\s*)$", RegexOptions.Compiled | RegexOptions.IgnoreCase); Thanks Bill ...more >>

Hello, While in extensive math calculation in MFC application, i used to yield control to window by calling this code: void YieldControl( void ) { MSG msg ; if( ::PeekMessage( &msg, NULL, 0, 0, PM_REMOVE ) ) { ::TranslateMessage( &msg )...more >>

I'm using MS SQL studio express edition and it is a pain in the ass to grant store proc. to a user by clicking. is there a better to do so? thank...more >>

Hi everyone. We're trying to diplay a message on the screen, and we want it to be always there, regardless of whether a new application is run, which may occupy that portion of the screen. Put another way, I want a text (or other types of graphics) to be always visible, even if a fullscreen ...more >>

Imitate your fallos within 5 minutes from here. Perfect solution for part-time prostitution. How many times was it very lines? In your pockets are empty rockets. ------------------------ details here ...more >>

Is it possible to convert a microsoft word document to pdf in .net code. If anyone has done this before, please let me know....more >>

Hi,=20 I want to be able to make a Master constructor for a class which all = overloads of the class constructor would call and thus if I have minor = changes to something I only need to make them in the Master and not in = each instance, but this does not seem to be allowed. Is there some w...more >>

hola amigos.... tengo dos formularios en los cuales desde uno de ellos quiero poder modificar lo que lleva dentro un textbox el otro. agradesco su colaboracion. Marcelo...more >>

Hi, We have a form based authentication implemented on our site that has been working great for over 2 years for oursite.com, oursite.ca and oursite.co.uk. However, today I found out that oursite.de is failing (nothing happens). All other directories that require authentication are redirected...more >>

Hi, I have an application with a barcode in the Image. I want to read the barcode from the image using program. Image resolution is 120 X 120 DPI.I tried to read thru different barcode SDKs available in the market ( like ; Leadtools , Pegasus , Atalasoft etc..),but none couldn’t read t...more >>

hi How would I go abouts finding out how many bytes a string has. ( I want to do this so that I can set the datatype on the database approriately.) Thanks Joyce ...more >>

Hi, I don't know if this is possible but a just want to know if it is. I want to create a new object on the fly from another object with the same properties but all properties was another type like String. Example : Object to copy have this properties : - Id (Int) - FirstName (String...more >>

Hi Gurus, I need to transfer a jagged array of byte[][] by reference to unmanaged function, The unmanaged code should changed the values of the array, and when the unmanaged function returns I need to show the array data to the end user. Can I do that? How? ------- Thanks Sharon...more >>

Hi in an application I am writing I have to process some text files which contain various data. Some of this data are text strings which have been encoded with HtmlEncode (I think it is HttpServerUtility.HtmlEncode which has been used). How do I decode this encoded text to something more...more >>

Hi, I looked around for this specific problem but could not find any answer - there's few things in VB but still nothing exactly like this so I'd appreciate any help. We're writing C# WinForm application that need to "silently" use another app (called MapInfo) within itself - the intention is t...more >>

In C# if(exp1 && exp2 && exp3) Does it evalutate left to right (exp1 -> exp2 -> exp3)? or right to left (exp3 -> exp2 -> exp1)? Or would it execute all of them even if exp1 turned out to be false? Thanks :) ...more >>

I want to binding stored Procedure To Table Using Asp.net2.0 *** Sent via Developersdex http://www.developersdex.com ***...more >>

Hi. I am having a problem on handling asynchronous sockets in C#. I implemented a pair of client and server sockets. The connection is ok when first connected. However, when I turned off the server socket, the client is able to connect, but cannot send anything out. It seems that the So...more >>

Hi I am using the VS2005 setup and deployment project template to deploy my new app. However it only seems to allow graphics during the setup process to be placed in the top banner area. Is there a way to have the graphics on the left hand side of the EULA for example? Or are there...more >>

hi all, On my page, i have external stylesheet <link id="sbSiteCSS" rel="stylesheet" type="text/css" runat="server" /> whose href is determined on page_load protected void Page_Load(object sender, EventArgs e) { sbSiteCSS.Attributes.Add("href", "http://www.mydomain.com.au/1/site.css...more >>