Hi , Can Anyone explain me exactly why multiple inheritance not used in java and c# thanks, Mahesh -- Have A Good Day, Mahesh, Maheshmandhare@yahoo.co.in...more >>

G'day, I think I got my head around using delegates, particularily when updating the user interface from another thread. I got it all sussed, just not 100% sure on the correct syntax for calling the delegate. Is this.Invoke(delUpdateUI, args); Same as delUpdateUI(i); The follo...more >>

Hi, While using the RadioButtonList control, that I populated in the runtime, I am not able to get the selected item in the javascript while referring document.Form.RadioButtonList.value. What is the solution. The DropDownList control is able to refer in javascript like document.Fo...more >>

Hi All, the Process.Start method returns a boolean value to indicate, if a process was started or not. Where can I obtain more detailed error information, if the process could not be started [for example:not enough memory or such errors]??? It seems to be possible, that a Win32Exception will b...more >>

Hi does any one know how can I access the Access Database in C# aspx page? if the database is multi-user, how can I include the use name and password? Thanks ...more >>

This article explains that parenting controls is better than adding them to collections: http://msdn.microsoft.com/smartclient/understanding/netcf/dev/default.aspx?pull=/library/en-us/dnnetcomp/html/netcfimproveformloadperf.asp. However, it doesn't explain why. Please elaborate why parenting ...more >>

Hello, Is there an equivelant to the old Debug.Print & associated window that was found in the VB6 IDE? (Aside from Console.Write) Thanks for any suggestions Ant...more >>

I am including a reference to ADOX in a C# project by doing the following: In Solution Explorer, right-click the References node and select Add Reference. On the COM tab, select Microsoft ADO Ext. 2.7 for DDL and Security, click Select to add it to the Selected Components, and then click OK. ...more >>

I have a class (sharedClass) that is instantiated (not derived) by two other classes (guiClassA and guiClassB). The sharedClass needs to be able to call a method that is defined in its parent class (guiClass). Specifically, when guiClassA or guiClassB calls a method from the sharedClass,...more >>

Hi All, I cannot made visible the toolbox bitmap for my controls. I did the following: - Namespace : foo - Assembly: foo.dll - Toolbox bitmap stored in subdirectory Resources. Resource bitmap defined as embedded resource: MyControl.bmp - Then the control toolboxbitmap attribute is define...more >>

I have to translate a URL so that the parameters in the URL include the 'special' characters for the ?, & and other features. I have looked at the HttpServerUtility.URLEncode function and it seems to be the correct method to call to conduct this translation. However I cannot figure out how to ...more >>

I am working on a class who's base class contains a method to generate an XmlNode (a representation of the object's properties). Now, in my subclass I will also have an overriden method to do the same thing, and will simply call the base class first (to take care of all base class propertie...more >>

I am trying to control an existing running process from C#. More specifically, I am trying to control an existing workbook that is open in memory. I use the following code using System.Runtime.InteropServices; Excel.Application xlApp = Marshal.GetActiveObject("Excel.Application"); This wo...more >>

Hi, I'm pretty newbie on XML so I have this basic question. I have a node which has 5 ChildNodes : <RelatedLink> <DataUrl type="canonical">clickhere2.com/</DataUrl> <NavigableUrl>http://clickhere2.com/</NavigableUrl> <Asin>B0000A1I5E</Asin> <Relevance>301</Relevance> <Title>Cli...more >>

Hi, I am trying to port some C code to C# but I am stuck on the following lines: *((unsigned*)&b[3]) = (unsigned)a; ... ((void(*)())&b)(); where a and b are both arrays of type unsigned char (for which I used byte arrays in C#). I know it needs to be within an unsafe bloc...more >>

Im getting an exception: System.FormatException: Input string was not in a correct format. at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info) at System.String.System.IConvertible.ToInt32(IFormatProvider provider) at System.Convert.ToInt32(Object value) at Sys...more >>

Can I encrypt data more than 117 bytes in C# (can use CAPICOM and Crypto API libraries) using RSA 1024 bit. Any sample code would be appreciated. Thanks ...more >>

Hi All, I have created this UI program, i call couple of database procedures and update process steps to list box. Program runs fine, but I have problem. What happens is I dont see the update as it happens, I see all of them after completing all the procedure run. for example: Update...more >>

Currently I use Response (below) but it feels a little hacky. Is there anyway to do this using a nice little Framework class :-) Response.Clear(); Response.AddHeader("Content-Disposition", "attachment; filename=Letter.blah"); Response.AddHeader("Content-Length", msOutFileData.Length.ToStr...more >>

Hi, Im trying to send a files using a HTTP POST request in my Window Application. I also have a progressbar that is being updated whil uploading. I have managed to send a file using HTTP PUT, but not HTT POST. I also want to send a username and password, as if it was get?username=myuser&pas...more >>

Simple question, hopefully simple answer :) In a multi-tier application, when should I cache my data? Business Logic Layer or Data Access Layer? Thanks, Mythran ...more >>

Hi, I'm trying to integrate with Windows Media. I need to get a playlist filterd artist and album For example i need to get all "Abba" songs from specific Abba's album. Anyone know how to do it? Thanks a lot ...more >>

Hi I'm having a discussion with another programmer about a best practice for thrownig exceptions. I want to create a rich class library with many different exception classes in their own namespace, so they are easy to find with intellisense. He wants to just throw Exception or one of the buil...more >>

[STAThread()] public static void Main() { string sectionName = "system.web"; object settings = ConfigurationSettings.GetConfig(sectionName); Console.WriteLine( settings == null ? "(null)" : settings.GetType().ToString() ); } I'm trying to access the system...more >>

I was recently assigned to build a database administration tool with an infragistics web grid UI. I am able to pull the data into a dataSet and bind it fine. However, when I attempted to use the UpdateCell or UpdateCellBatch events to transfer updated data to the data set, the event arguements (...more >>

Hi I want to connect to a mysql database on my site for example www.xyz.com what settings is needed to connect to that by oledataadabter? thx ...more >>

I can't find any answers, I have no idea why this is happening. I have a dataset. In this dataset there are three tables RO ROParts, ROLabor ROParts and ROLabor are related to the RO table one to many relationship PKEY on RO is the RO#, ROLOC, RODATE these three fields are replicated ...more >>

I'm using the following code to create word document but the problem is if you go to task manager you'll see a WINWORD.EXE process is running but not the application, here is the code: Word.Document aDoc= WordApp.Documents.Add(ref fileName, ref newTemplate, ref docType, ref isVisible); W...more >>

Hi there I am looking at using a thread-pool, for example one written by Jon Skeet (http://www.yoda.arachsys.com/csharp/miscutil/). Can anyone tell me if this pool provides the possibility to wait for all its threads to finish? For example, if I start 20 threads: CustomThreadPool pool =...more >>

I have been banging my head for a couple of hours now. No matter what I do the color that I make transparent is black. Here is the code I am using from MSDN. I have tried bitmaps, jpegs, gifs and new bitmaps created in code, but I cant get any image to go transparent. Thanks if you can help. ...more >>

Hi all, I'm having a very weird problem. I have the following class.. using System; namespace CCP.Core.Data { public class Null { private Null() {} private static readonly string stringSurrogate = String.Empty; private const short numberSurrogate = -1; private const ushort ...more >>

I have the following in my click event of a button control: if(.....) { this.Page.RegisterStartupScript(@"startup",@"<script>alert('This project cannot be deleted until all tasks have been deleted first.');</script>");} else {this.Page.RegisterStartupScript(@"startup",@"<script>return confirm...more >>

Given the classes: class Class { public static implicit operator int(Class c) { return 0; } } class Holder { public int Property { set {} } } I can write the code: Holder h = new Holder(); h.Property = new Class(); How can I do the same thing using...more >>

Hi, I am trying to dynamically create linkbuttons. They need an event handler, so i can respond to the user's click. I try to add the eventhandler on the fly, but when i click on the link, the code does not execute, it just reloads the page. Where am i going so wrong? i don't understand wha...more >>

Hi, I am using C# to insert a date value from the DatePicker into a DateTime filed in mySQL database.. I am using the following syntax: '" + datePicker.Value + "' I also triend it withour the ' and with # in the best scenario I will not get any error but the value will not be saved...more >>

I am having some troubles with a project I am working on not building correctly. I converted an old ASP project to .Net and then have been adding pages to the project in C#. This all works ok, however when I try and compile the project I get two error messages: 1) Could not copy temporary ...more >>

I have a treeview with a ContextMenu attached. When i click on a node, AfterSelect fires but does not fire when right clicked (the context menu pops up). (Background: I have loaded a list of disk file names onto the tree and have to open the file thru the contextmenu for editing. It opens the ...more >>

Hello, When I'm uploading an file to a JRun WebServer (third party) with a Windows Forms application, l always get an TimeOut while uploading, all other request who doesn't request an post are going ok? Why? I've tried almost everything. I also tried the KB888528 solution but this also does...more >>

Hi Is there a way to change a date format dd/mm/yyyy to m/d/yy? I have a textBox where the user should put a date, but no matter what format the user input dd/mm/yyyy or m/d/yy, I need to convert it to this format: m/d/yy. Cheers! Claudi *** Sent via Developersdex http://...more >>

Hi! I have problem with passing data to custom action. I don't know what wrong I'm doing. I'm trying to follow the steps in the walkthrough: "Passing Data to a Custom Action" http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vsintro7/html/vxwlkwalkthroughpassingdatatocustom...more >>

I would like my application to display the main form to cover the whole screen. At present I do this by calling Screen screen = Screen.PrimaryScreen; and setting the form size to this. The problem is that the bottom of the form lies under the start bar. How can I make the form fill ou...more >>

Hi, I know that I'm an extreme newb by asking this overly beaten question, but I am leaning toward C#, becuase the perception is that it is better to learn than VB.Net. I guess it makes you cooler.:-) Anyhow, I am a novice programmer, and I will remain one as well...I have no plans to ...more >>

Hi, I am working on a winform app. I need to use an object which can store some information(key/value pairs) and also can be acessed by multiple threads(read/write). From what I heard Hash table is best suited for it. My question is Why hash table. why can't we use an array. I thought ...more >>

Hi, I am completely new to VC#.NET graphics code and would like some help to stop me wasting my time up blind alleys. I am looking for a line charting code example. Nothing posh or airy fairy, just a simple area with annotated axis and a graph. I am not looking for code to create a multi ...more >>

Hi all! I've made a button from scratch derived from a Control class. The main reason why Control and not Button class is used for inheritance is that when deriving from a control class it's possible to have a transparent background, while if derived from a button class it isn't. That's achieve...more >>

Hello, I have an issue I would like to solve. I need a dataset synchronization mechanism method that needs to read data from SQL server and within an interval of time, read the data again and Send only the changes made to the dataset. My thought was read one dataset that will be my cach...more >>

Hi,all I want to change Control's size&location in runtime ,(C#) but i dont know how to do! :(so, can you provide me with document about this. my email: zhonghua@rinpak.com.cn zhonghua_1999@163.com thank you in advance. ...more >>

Hi, Kind of spending too much time on the no-cache issue and found out something like <% Response.CacheControl = "no-cache" %>. In my ASP.Net, a C# .aspx file, where do I put the <% Response.CacheControl = "no-cache" %>? Is this enough to fix the Caching bug? Thanks for help. Jason ...more >>

Hi Friends, I want to make formula in business Intelligence Project like as we make formula in Crystal report. Thanks, Alex. ...more >>

I have a UserControl hosted in Internet Explorer. I create a worke thread to do some task and want to fire an event when the worker threa finish working. The event works fine, javascript can caugth it, when it fired from th main thread or from the code in external event handler such as Butto ...more >>

Dear all, I have a question about TreeView elements. is it possible to differentate double click on TreeNode itself from double click on "+" of this TreeNode? Thanks in advance, Boni ...more >>

Hi to all, we have the MousePosition property that we can get the Point of the position of the mouse cursor on the screen, but is it there a way to get the respective Point of a cursor in a TextBox ?? (relative to screen) I mean, i have a textbox that i write some text and i want to know t...more >>