I'm new to printing with C# and I find that printing and previewing is a lot slower than I expected. As a test I've just been printing 100 blank pages. When I try to preview, the "Page 'X' of document" box shows up and it counts very slowly (a little less than one page per second). As a compar...more >>

Hi All, I want to change WindowState of form1 from form2. I tried these two methods, but no luck on both. (1) Declare a public method: /* function of form1 */ public void active_this_form() { this.WindowState = FormWindowState.Normal; t...more >>

Hi, Is there any function to retrieve the application's path, path of the exe file (as the property app.path of VB6). thanks Nhan ...more >>

hi I wrote a Class that has 1 inherited child class this class loads row offsets into a 1 dim long array i can traverse the text file via rows or if delimited columns or fixed with columns i can define a structure (array of column names, type,size, len, decimal i would like to browse a fil...more >>

When I single step through the code below, it sends back the PDF file that is retrieved in the line fm.GetAccountPDF(...). When I run without single stepping, I get the master page for this page. I have actually saved the file returned by IE 7 as a text file and opened it in notepad, so I ha...more >>

I am an Xtreme newbie to C# and am trying to build an array of strings. I get the following error and don't know what I'm doing wrong. System.NullReferenceException: Object reference not set to an instance of an object. Here is a diliuted example. string[] strArray; string strV...more >>

First in an occasional series. I'm somewhat experienced in C++, and am using .NET Visual Studio 2005 as the IDE. I'm learning C#. What I don't like about C#, compared to C++ (all flavors): 1/ no pointers or tracking pointers or handles--this is absurd. I realise references are by and l...more >>

Here's my question: I have Windows Forms app. Suppose the user clicks on the "Processing" button on the UI. The UI thread then starts processing. During this processing another thread calls invoke to update a control on the UI. When the UI thread reaches the end of its time slice--even th...more >>

Hi I'm currently having trouble serializing an object to Xml, in the format I need. Below is the object definition. ------------------------------- [Serializable] public class Folders { protected List<PathString> _include; protected List<PathString> _exclude; public Fold...more >>

Below is a custom exception class that I created to be shared by my C+ + and C# code. It works fine till I need to pass the exception object through Remoting: every time a FtException is raized in the Remoting server side, the client got the following error (see below). Based on my Google searc...more >>

Hi there, I have a dialog with a "RichTextBox" that's anchored on all 4 sides of the dialog. I now want to resize this control in my "OnLoad()" handler so that it reflects the size of its text. Because of the anchoring, I can do this by simply resizing the dialog itself. The (condensed) cod...more >>

Hi Can i extend the OpenFileDialog so i can show a thumbnail of a picture i am opening ? (priview it in a picturebox inside the fileopen dialog ) Johan ...more >>

..NET 2.0 Is generic lists faster then tradional lists when sending over a collection of objects (value by reference) in .NET remoting. Lets say if a list of object should be sent from a server to the client. Whould it be better to use generic lists? Jeff ...more >>

Hi, I am working on the windows application. I created a form Form1 to list records. I used datagridview to show data and bound it to a dataadapter. User can click Update button in Form1 to open a new dialog window Form2 to update selected record and also add new records. When user closes t...more >>

Unless I'm misunderstanding the pattern and it's various implementations, Singleton effectively makes the constructor unavailable to clients. The constructor for any given class, however, is what we otherwise use [outside of Singleton implementations] to *require* specific parameters be suppli...more >>

I have a Windows Form application with several application settings set. How is it possible for me to loop through those settings? Is it possible at all? Thank you ...more >>

Hello, I'm trying to loop through the app.Config file and add the keys from the app.Config as MenuItems on a MenuStrip. The following line blows up... transToolStripMenuItem.DropDownItems.AddRange(new ToolStripItem[] { TransMenuItem[TransCount]}); The error that I'm getting is "Argumen...more >>

I am building an asp.net 2.0 application and I need to be able to convert existing FLV files on the server. Specifically, I need to be able to take an FLV file and convert it to another, smaller/scaled down FLV file. I'm trying to create a small, preview of the original FLV file. Is there a ....more >>

I badly need to get a snapshot from a WebBrowser control. How can I do that?...more >>

In the days of VB, it was possible to do the following: "Call Button1_Click()", although there was some argument about whether this was asking for trouble. Is it possible to do it in CSharp? The trouble that I see is that every event handler needs arguments. But can you do something like "...more >>

I have a application that run as Windows Service. I also created another Windows Form Application that manage the Service like MS SQL Server Service Manager did. Service Manager need to know some variable value in Service, include some massive data. I am using the TCP Socket, is there a bet...more >>

I have a bitmap which I have retreived through the WebBrowser DrawToBitmap method into a Bitmap. When I try to save the bitmap I get "ExternalException occurred A generic error occurred in GDI+" Why can't I save the bitmap? I need to save it - how to do?...more >>

Hi, We're building a mapping application and inside we're using open source dll called MapServer. This dll uses object model that has quite a few classes. In our app we however need to little bit modify come of the classes so they match our purpose better - mostly add a few methods etc. Exampl...more >>

Hello all, Please help and suggest the code to get the printer status over the network. for Example, i have an string "\\\\os1\\PtName" where os1 is the system name and PtName is the printer name I need to know the status of this printer on the system name "os1". Please suggest me the c...more >>

I have an image which I'm trying to save using my_image.Save(some_path, System.Drawing.Imaging.ImageFormat.Path); and then I get the error "Parameter is not valid". What could be the reason for this error? I know I can store it as a Png file....more >>

Hi, I am struggling with the following issue, i need to copy files from one place to another...well that isn't so hard..but i also need to create the folder(s) in which the file orginaly was located. I have a listbox from where the user can select the files he or she wants to copy. So it c...more >>

I am creating splitcontainer at runtime.. want width of panels different. How can i do that. As i cant modify splitContainer2 .panel2.width = 100; From http://www.developmentnow.com/g/36_0_0_0_0_0/dotnet-languages-csharp.htm Posted via DevelopmentNow.com Groups http://www.developmentnow.co...more >>

Hi, I have a web service application written in C# .NET 1.1 using MD5CryptoServiceProvider.ComputeHash(Byte[]) The problem is that after a while(web service processes requests) the call throws CryptographicException "the parameter is incorrect" Here's the stack trace: System.Security.C...more >>

Hi, Is it possible to set path to dll from which I import? The problem is that if I know the path I can use it in DllImport attribute but I need to parametrize this path (this parameter is read when application starts). E.g.: string dllPath = ...; // Read when app starts .... [DllI...more >>

I want to create a SIP software using C# (IP Telephony)? where should I start from? ...more >>

I imported an Access database, created a dataset, added a bindingsource; and have been happily coding away - couldn't be easier. My problems started when I added a column to the database - I can't find a way to tell Visual Studio to "resync" the imported dataset and the external DB! I tried...more >>

As I am using a datagridview based on a view in my SQL database. The default update() command isnt created and hence, I am currently using insert and update commands thru the dataset wizard. However, none of the insert or update SQL commands seem to work for me. No errors are provided but y...more >>

In this NG late last week someone asked about reporting in .NET. I suggested going with ActiveReports and to avoid Crystal Reports. A bunch of you piled on and not only concurred that Crystal sucks - but went beyond that. So my new question: Do any of you actually use *and* like Crystal Repo...more >>

Hi Friends, What is the diffference between the thin client server application and SmartClient application ? Though I have worked on smart client application, i'm not able to distinguish them seperately. Could you please explain me in detail ? ...more >>

Hi, I am writing the XML Documentation comments and useing the "Sandcastle Help File Builder" to generate the document, but one problem is encountered. There are several classes derived from the common abstract (template) class. Though each class overides several abstract or virtual functi...more >>

Hi, I am trying to use the function GetPrivateProfileString as following: [DllImport("kernel32.dll")] public static extern Int32 GetPrivateProfileString(string lpAppName, string lpKeyName, string lpDefault, string lpReturnedString, short nSize, string lpFileName); ....... String sDatab...more >>

Hello, I need my application to change the name of a drive, I think this is called volume label. I searched everywhere, but I was unable to find out how. Please help. T.I. ...more >>

Hi, I'm looking for advice or samples regarding the implementation of what is essentially a bound grid, most columns are bound, however there are a couple of unbound columns which are basically calculated totals (read-only) of data in the bound columns (which are read/write). I've implem...more >>

The type or namespace name 'UpdateProduct' could not be found (are you missing a using directive or an assembly reference?) Hi, I am new to ASP.NET, C# and Visual Studio 2005. I am just learning to compile and Visual Studio 2005 converted the programs to a newer version which is why I am ...more >>

In the VS 2005 add-in I'm currently developing, I want to be able to find out when the entire Visual Studio IDE receives and loses focus (e.g. when the user switches to another program and back to the IDE). I would have expected such an event to be present in DTE.DTEEvents, but it isn't, so...more >>

Hi, I've been given a WSDL file and need to convert it to C# so that I can use the procedures it creates, can anyone tell me how to do this? I'm looking at doing it using Visual Studio 2005 Command Prompt with following line of code wsdl /l:cs /protocol:SOAP mywsdl.wsdl any help is appreci...more >>

Hi all, I am coding the "encode" code. ex: ABC ==> fkljd937ffsX I have some ideas, ex: basic shift, un-regularized shifting plus the timer as variable. Please let me know any other better ways or ideas :) Thanks! Best regards, Boki. ...more >>

Hi, all: I use the code below: ///////// p.StartInfo.UseShellExecute = true; p.StartInfo.FileName = "mailto:boki.store@gmail.com? subject=testing"; p.Start(); ///// need your advice how to add body ... I failed when I add "?body=testing", it will bec...more >>

Hi, I'm working on a multilingual CMS. I have a number of controls and labels that are generated based on the number of languages the CMS supports (ie. for the section management portion of the app, we could have dynamically generated control labels "English Section Name", "French Section Nam...more >>

Hi, How do you access controls that were added to a TabPage in Designer? MS's documentation doesn't use Designer. The example in TabControl defines them in the main form then copies a reference to the TabControl's Controls property. Walking though Controls looking for the control you want is...more >>

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I'm looping through assemblies and checking CodeBase prior to processing a given assembly. However, I occasionally get this error: The invoked member is not supported in a dynamic module. Which makes sense, but how can I check for this condition before calling CodeBase (i.e., check for the ...more >>

Hi, Pardon the unclear/verbose subject, I just can't think of another way of phrasing it. Basically, I can assign the (for instance) "Location" property of a picture box to a data-bound item. Like, I can get the absoloute location from an ADO.NET database, and assign it to the PictureBox.L...more >>

sorry for my bad english when I fire up (from my c# code) a standard "file - save as " dialog, and when chosen location is a shered local network directory, where I do have rights to create and modify files, but I do not have rights to delete one, (and do save as with my filename) ...more >>

Hi Im using c# to extract some data from Access and then insert it into an excel workbook. I want to set calculations in excel to manual on opening the book and then set it to revert to automatic once the data has been inserted into the sheet. Using vba i would use the following: with Ap...more >>