I've got a c# winform control that I've created. Any time I press down arrow or up arrow, even though I try to handle the key, it tries to take focus away from my control. I've tried this with a bare example control and it does the same thing so it's not something I'm doing (I think at least)....more >>

Hi... I would like to search for a hex string (for example: "E903") inside a binary file... Although I open the file correctly, how do I search hex values? Thanks in advance! Nikos ...more >>

I could not find a c++ news group, So I appoligise for posting here. I have written a c++ program that takes in arguments to create paramaters for many different applications or netowrk info. One parm that I take is three letters. I have been using those three letters passed in to create a ...more >>

Dear all; Do you have any solution for my problem? i need monitor network printer server 's job info. to a mdb Database . somebody can help? Thanks! i can not found some uesful help in website! Regards. Roopeman ...more >>

http://www.print-it.blogspot.com << The Greatest News Ever! ...more >>

I would like to perform something similar to the below function in C# .NET. The C++ below code is from a Microsoft DDK sample driver application. Specifically, I would like to perform Device I/O Control from a .NET application. Is there any way to do this in C#. I have tried Googling to no ...more >>

I have a C# program that user would select several search criteria and then outputs to the Crystal Report. A message is output to user if no matching record is found. In my code I also clear, removed and dispose of the table in the dataset that was used which should have nothing in it any wa...more >>

Hi, I'm very new to C# and .Net, I've been working with it for about a = month. My experience has been mainly with Delphi 5 (not .Net). What I'm looking for is for a shortcut way to override a property = without actually having to reimplement the get and set methods. In other words, override ...more >>

An instruction stated "...change the Title property of the DOCUMENT object to..." Where's the DOCUMENT object in a VS C# project? Thanks, Norman ...more >>

Consider an application which has *many* references to DateTime.Parse(string); Is there a way, say when the application first starts up to force this method to use a specific IFormatProvider, so every DateTime.Parse(string) is really DateTime.Parse(string, format); (where format is de...more >>

Hi everyone. In a little program i am writing i have a listview, i fill it with data from an ArrayList which contains a lot of objects. The data for the columns are differente fields in the objects in the ArrayList. I have also added column sorting, when a user clicks a column. All that w...more >>

I have a problem that is driving me crazy, I have and openfiledialog but I can't seem to set its initial path. I have the initalDirecotry property set to the correct path but it always opens at the last directory I opened a file in. Does anyone have any idea how I can fix this ?. Also ...more >>

I am trying to create a control, using standard user components A. The I use that component A as part of a new component B. And finally I drop that component B on my form. Now in Component A I filled in some default fields like this. [Browsable(true)] [DefaultValue("Title"), Category("Appea...more >>

char a = 'p'; if (System.Runtime.InteropServices.Marshal.SizeOf(a) == 1) dothis(); else dothat(); SizeOf(a) is returned as 1. I thought chars were 16 bits in size. Why is it returning 1 to me? thanks Claire ...more >>

How to check if a user selected a child node from treeview? Hrcko ...more >>

Im sat here watching task manager and the memory consumption of my application rising second by second. What tools are there out there for me to use to find where it's all going please? (I wish we were able to do garbage collection ourselves. Excruciatingly poor idea microsoft. That's been t...more >>

Greetings, I have a "newbie" question related to forms. I have the following code in which I display a second form when a button on the first form is pressed (using the "Click" event). private void btnClickMe_Click(object sender, System.EventArgs e) { ActiveForm.Hide(); frmInstruction...more >>

I want to add an icon to my project's exe file, so that when i create shortcuts to it, they use that icon. I've added the icon to my project and marked it as an embedded resource. I've changed my form's icon property to use the icon, but i think i need to do more. I've added a deployment ...more >>

hi, i have some controls in a form which are declared as static for example :- public static System.Windows.Forms.ComboBox comboBox1; it is working fine and i am able to access the control from other forms without creating an object of it. But when i make any changes in the form li...more >>

All, I have a listview and I want to add an image to each row (detail view) to acompany the row text. However I simply want the image to be a square block coloured in, in a particular colour For example I want the image of row 0 to be a red square, row 1 to be a blue square , row 3 to b...more >>

Should I be concerned about the classic "Deep/Shallow" copy problem when returning objects, specifically a DataTable or DataView from a method? For example, see the code below: private DataTable LoadStuff() { DataTable dt = new DataTable(); .... dt.Columns.Add(...) .... dt.Rows...more >>

How to check if user entered a simbol and not a blank in textBox? Hrcko ...more >>

I have a strongly typed dataset that returns two tables - "items" and "itemdetails". In the strongly-typed dataset designer, I've created a link (relationship) between the two tables based on a foreign key. I want to put them into a nested repeater, but I'm having problems finding a "nice" wa...more >>

What is the difference between these items and can Visual C# write apps for them? Windows Mobile Windows CE Pocket PC PDA Palm Pilot ...more >>

I have a WinForm with controls bound to a typed recordset that was generated by the Dataset Designer. There are several ComboBox controls with their DataSource bound to different lookup tables. Everything is working fine, except when I need to handle a null default value in the data record c...more >>

When I'm trying to debug an app in VS, I'm trying to get the value of a variable by typing out a question mark and then the variable name. But when I do that I get an error from the Output Window. :< I know this can be done, and I've done it before, but I can't remember how I flipped the "mo...more >>

Is there a quick way to initialize an array with one value for example int[] IDs = new int[100]; I want all items to be initialized to -1. ...more >>

Hi, I have conversion like following: string Source; // convert from Base64 to binary byte[] bytIn = System.Convert.FromBase64String(Source); Everything works fine. Problem is in Source Data. If "Source" data are not in the proper format I have got unhandled exception of type "Syste...more >>

I've seen one way of opening up another form in a C#/WinForms app and I had done it another way and I would like to know what the gurus think is the correct/better way? I've seen one way, where the parent class/form instantiates the child form, and still in the parent form, sets properties ...more >>

Hi, In our application we need to use the Process command to execute and retrieve the string that is returned when we execute IpConfig on the command prompt.( yes have to use IPConfig) the following code doesn't seem to work. Process p = new Process(); p.StartInfo.UseShellExecute = false; p.S...more >>

When I run a c#DotNet web service, I have the following error: System.DllNotFoundException: Unable to load DLL The dll that cannot be loaded is a C dll. That's why it cannot be put in the GAC. This dll is located in c:\Program Files\MyApplication\bin The environment variable "PATH" contains ...more >>

Hi i have to custom attributes for using with properties. What i want to do is instruct the compiler to throw a warning or ever better an error if both attributes are used in the same property. Is it possible? any ideas? thnks in advance *** Sent via Developersdex http://www.develope...more >>

I have an event on my form which is on the keyup event. In another part of the form, I want to be able to call that logic. I have tried calling that even method with passing (null, null) and things worked. But my "spidey sense" tells me that's not the correct way to do it. Is there a bet...more >>

When I start writing something in textBox I would like that a specific button is Enabled=true! How to do that? Hrcko ...more >>

How to fill comboBox with data from database? Hrcko ...more >>

I referenced a COM dll, but I need to ask, in execution time, the direction of the reference. anyone knows how to do that? if I called the assembly location it gives me the location of my project, not the location of the dll Thanks ...more >>

Hey all, I'm hoping someone may be able to help me. I need to evaluate some strings to see if their values are what I expect and it doesn't seem to work. Any help you can provide would be really appreciated. Here is my non-working syntax: switch(true) { case Header.ParentSectionDisplayNam...more >>

I know I can use reflection to call internal, protected, and private methods in a class, but I need to instantiate an object that is public but has an internal constructor (The CurrencyManager class). Is there a way to do this with reflection? I'm so mad at MS about the CurrencyManager desig...more >>

Hello, I am looking for an article, or some information about how to get a C# windows forms application to trap the "End Process" event from the Task Manager? Is such a thing possible, and if so, where is the information on the event the would be raised located in the .NET framework? ...more >>

Hi a simple question about the meaning of "+=" in C#. What does something like this mean: this.TextBox1.TextChanged += new System.EventHandler(this.TextBox1_TextChanged); Is it a call to an "add" function or something? (I know that in C# one can implicitly cause a call to a "get" or a ...more >>

Hi, I could use some help with this because I've run out of ideas. I need to sort an arraylist containg objects of type TA, but so far no luck. Here's the code: Class TAList: ArrayList { normal arraylist methods... .... add .... remove public TA Item(int i) { if (_tacol.Count=...more >>

Hi all, I want to add a month callendar to my application that allows data entry and will display data. Basically I would like the user to select a day and then enter data for that day. When they save the info then the data they entered would appear under the number of the day in the month. ...more >>

If I need to create thousands of objects of the same type, is it more economical (memory wise) to use static member functions where possible? How about virtual ones? ...more >>

Short of going char by char, how do I search for a pattern in the text for a textbox Thanks MoonWa...more >>

At the TCP server side I'm using: /////////////////////////////////////////////////////////////////////////////// IPAddress DEFAULT_SERVER = IPAddress.Parse("127.0.0.1"); IPEndPoint ipNport = new IPEndPoint(DEFAULT_SERVER, 31001); TcpListener m_server = new TcpListener(ipNport); while( true...more >>

hi.. all a client of ours is considering to move from a dos application to windows desktop application. the application is for traveling agency, the database is rather large. their current database for other application is SQL-SERVER. they have 12 users. i suggested doing it in winf...more >>

I'm working on a Windows app that has a ListView containing a bunch of items. When the user clicks on an item, the app displays the item'd details. The user then has the opportunity to edit these details. The user should click the Save button after each change, but of course that doesn't alway...more >>

Hi everyone, I'm making an application that edits the configuration files of our software package. One of those things in the configuration files is configuration of heads. These heads form a matrix, eg a 2 x 3 matrix. H H H H H H I want to make a control that pictures the head. At f...more >>

I have used the following statement in ASP.NET <input type="file" runat=server ID="file1" readonly=true /> But the browse button next to textbox is not enabled when I execute the above statement. Please help me out in this regard. Thanks in advance. ...more >>

Hi. Any suggestions on how I might build a form which allows my user to enter a number from 1-365 and return a date in the 'mm/dd' format? I would like to use an array to do this. Thanks. -- Thanks, Vikas Arya...more >>

I have a textbox that I've watched in debug which receives this string: "557614" However, it doesn't display the text. Here may be the reason, so I need to know the proper way to do this: public class ThreadFunction1 { //put new thread process here public void getOneAtATime() { ...more >>

My question concerns C# Windows Forms user controls. I have created navigation user control. It gets the parent control's CurrencyManager to its bindable property. In the control, any change in the CurrencyManager position is displayed OK. But the problem is that the position of the parent Curre...more >>

Hi There When printing in C#, it seems that the printer 'shifts' the print area down and to the right. So, even if the print document's DefaultPrintSettings margins are set to 0, the printed page still has a 'printer added' left margin and top margin. Consequently, when printing with 0 mar...more >>

Why I can't catch the Form lost focuse event ? I mad a FORM , I want to print message each time I moved to another application my my desktop . I thryed the following but not work . this.LostFocus += new System.EventHandler(this.Form1_LostFocuse); private void Form1_LostFocuse(object sender...more >>

Hi, When do you put a class in another class and when not ? It seems in most case both work fine, but in some case not. I'm not yet smart enough in dotnet to know when and wy. Can someone enlighten ? I give example to enlight what I mean. This one has the CFG class in the class Rx: name...more >>

Hi, im currently working on making myself a MySql Object Abstraction Layer so that i pass in objects and it does the database trasnsactions using reflection so far everything works except the select since im trying to rebuild the objects in my method based on an object i pass in i am no...more >>

Hi, I have an array and I want to make many "for" cycles as follows: int[] a=new int[n]; ....//init a for (i1=0;i1<a.Length;i1++) for (i2=0;i2<a.Length-1;i2++) for (i3=0;i3<a.Length-2;i3++) ... for (ik=0;ik<a.Length-k-1;ik++) { f(a[i1],a[i2]....) //some...more >>

I want a .net component, that a lot of applications can share one instance of it. So i wrote the following code: 1.TextViewer.FormTextViewer(the component): using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; namespac...more >>

Hi, I am using a calendar to show dates. Now I am setting my own date; myCalendar.SelectedDate = myDate; The date that is shown in the calendar is today's date. How can I move the calendar to show the date that I have set. Can someone help me out. Thanks in Advance...more >>

I'm writing a TCP server that receive data from several clients. The code: Socket clientSocket = server.AcceptSocket(); // server is a TcpListener object. And now I start a thread that handle the clientSocket received data from the client, and I going back to wait on the server.AcceptSo...more >>

I am calling following Powerpoint method expression.AddPlaceholder(Type, Left, Top, Width, Height) Here Left Top Width Height are optional parameters with Type as float How to call this method in C# without passing any value for above parameters I am trying ti your Type.missing but not wor...more >>

Hi all, I've developed a win C# app that is actually database driven using SQL server 2000. The idea is that only one application will be installed on a server in a network and the program will be able to run at each client machine by just double-clicking the application executable through a...more >>

i want to get the property value using reflection. Scenerio: i have a status bar on MDI form. it has property named "Panels" and i want to get a specific panel from that panels collection using reflection. Please let me know. Thanks C# Developer Mudassar ...more >>

Can you please suggest me a good book? i' ve never done asp or something similar before. ...more >>

Hi, i'm looking for an access point example in c#, a simple one or something useful or ideas. Thank you very much. ...more >>

I have two objects, each on a different thread. Object 1 periodically fires an event, which Object 2 sinks. How can I marshall the event from Object 1 to the thread on Object 2? ...more >>

Hi, I would like to make an application that uses the windows access control list to enable/disable features of the application depending on the user. The idea is to reuse the Windows NT user accounts and groups and allow the app user to configure which winnt user accounts and groups can ac...more >>