C#

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Re: Loading and Unloading .dll file in C# pakFari13-Jul-05 8:59 pakFari 13-Jul-05 8:59  I will just say Great!!! It is working ok, can u tell me one more thing. How we can invoke the member functions of the Component using objType. Re: Loading and Unloading .dll file in C# DeepToot13-Jul-05 9:18 DeepToot 13-Jul-05 9:18  Well, this is where it can get tricky..at least for me. Because there are a few ways to do this, depending on if you want to call the function right then, or place that object in a Collections class and call it later. Hopefully someone will be able to explain it better than I can, but here goes. This is how I executed a .dll after loading it. Remember that when you created the Instance it passed back an object object instance; //what Assembly.CreateInstance returns object[] args; //Parameters to pass the function MethodInfo method = type.GetMethod(functionname); object returnval = method.Invoke(instance, args); I hope this helps. Steve Welborn Software Architect how to write factory interface handler Vinkum11-Jul-05 20:08 Vinkum 11-Jul-05 20:08  Hi, Anybody knows how to write factory interface handler that will call multiple handlers. I'm using Sharepoint Services in my application. In this sharepoint i can able to add only one event handler. But i'm in situation that my sharepoint has to communicate with multiple event handlers. I asked this question in Sharepoint forums. They suggested that "You can write a factory interface handler that calls multiple handlers. " . But i didn't get any suggestion about factory interface handler from them. If anybody knows how to write factory interface handler that will call multiple handlers. Thanks in advance, Vinoth Re: how to write factory interface handler Christian Graus11-Jul-05 20:20 Christian Graus 11-Jul-05 20:20  They are basically telling you the design pattern for a method that becomes your one event handler, and then farms off the event to other event handlers, based on the code in the class. Christian Graus - Microsoft MVP - C++ Re: how to write factory interface handler Vinkum11-Jul-05 21:22 Vinkum 11-Jul-05 21:22  Thanks for ur information, Could you please tell me clearly "design pattern for a method that becomes your one event handler nd then farms off the event to other event handlers, based on the code in the class". I don't know anything about design pattern. bye, Vinoth Re: how to write factory interface handler Christian Graus12-Jul-05 13:14 Christian Graus 12-Jul-05 13:14  Google for 'design patterns'. A design pattern is basically an established design for object oriented software, it's an established way of implimenting something cleanly. You don't need to know any more than what I said, they are telling you to write an event handler that then sends off events to all the places you want them to go. Christian Graus - Microsoft MVP - C++ is Constructor Member 78161011-Jul-05 18:58 Member 781610 11-Jul-05 18:58  hai guys i'm a newbie to C#. My doubt is is 'InitializeComponent()' is somewhat similar to a constructor. Is there any special features with 'InitializeComponent()'. Could anyone share it with me plz. Thanks in advance Long Live Re: is Constructor Christian Graus11-Jul-05 19:08 Christian Graus 11-Jul-05 19:08  Sreenivasan Palaniappan wrote: My doubt is is 'InitializeComponent()' is somewhat similar to a constructor. How do you mean ? This method is inserted by the IDE, and called to set all the properties that you set up in the forms designer. As such, you should never mess with the code here, your changes will disappear. as such, it's also a form of construction activity, I guess. But you should add any code of your own in the spot just below the call that is commented as being the right spot to do so. Christian Graus - Microsoft MVP - C++ Re: is Constructor User 209307311-Jul-05 19:12 User 2093073 11-Jul-05 19:12  No ! 'InitializeComponent()' is a common function that run in the form constructor. But in VS.NET IDE this a protected area of code !! If you try to change any line of code in this function IDE will reproduce the original codes at project rebuilds. In fact this is a scope that IDE put the design time initialization of controls and components there. [ _ Always there is another way _ ] TCP/IP Expert Coming11-Jul-05 18:01 Expert Coming 11-Jul-05 18:01  What is an easy way to make a program that opens a port on a server and waits for a client to ask for information. How do I do that client part as well? Can your method send both text and numbers? Re: TCP/IP Expert Coming11-Jul-05 21:48 Expert Coming 11-Jul-05 21:48  I figured it out, you use the TcpListener, and the TcpClient. new thread for new form wdahl9911-Jul-05 17:15 wdahl99 11-Jul-05 17:15  I want to open a new form in a Windows Application in C# in its own thread. The form has a constructor that takes some parameters (always). The form updates a Flexgrid upon events fired from a live datafeed. The updates can happen quite often and I may have multiple forms open at once with multiple updates happening at once. I have tried to start a new thread, but does not appear to keep the whole form in a new thread. Any suggestions would be appreciated. Thanks Re: new thread for new form S. Senthil Kumar11-Jul-05 17:54 S. Senthil Kumar 11-Jul-05 17:54  How are you opening the form in the thread? What exactly do you mean by wdahl99 wrote: but does not appear to keep the whole form in a new thread.? Regards Senthil _____________________________ My Blog | My Articles | WinMacro Capture the xp Logon and Logoff event aocraft11-Jul-05 17:12 aocraft 11-Jul-05 17:12  How can you capture the logon and log off event in windows xp. I am creating a windows service that needs to do something when a user logs on to their account in xp and logs off from their account. It would be good if I can capture their Username as well so I know who is logging on and off. Re: Capture the xp Logon and Logoff event KaptinKrunch11-Jul-05 17:32 KaptinKrunch 11-Jul-05 17:32  Check out the SystemInformation namespace for information about the pc and user. http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemwindowsformssysteminformationclasstopic.asp[^] Re: Capture the xp Logon and Logoff event aocraft11-Jul-05 17:56 aocraft 11-Jul-05 17:56  Thanks This is good to find out which user is currently logged on. But how can I fire off and event when they log on and off. if statements with a string? Anonymous11-Jul-05 16:25 Anonymous 11-Jul-05 16:25  I'm trying to take a numeric value from a textBox and compare it against another numeric value that is supplied by the app, but i'm stuk trying to convert the string value of the textBox1.Text to int value for the if statement, i keep recieveing the following errors: Cannot implicitly convert type 'string' to 'bool' Cannot implicitly convert type 'int' to 'string' here is the code: private void button1_Click(object sender, System.EventArgs e) { string myID; TextBox txtbx = new TextBox(); txtbx.Text = myID; if (myID = 123) MessageBox.Show("You are right"); } I've tried changing the string myID to int myID but it hasn't proven any better, as i get the same errors listed above with int to bool, and int to string as the only difference. also i'm getting a slightly less important error of: Use of unassigned local variable 'myID' which i understand means i haven't initiated the variable, but its failing inside the if statement. I'm still learning so if you guys could help it would be great. thanks newbie Re: if statements with a string? Weiye Chen11-Jul-05 16:50 Weiye Chen 11-Jul-05 16:50  Anonymous wrote: if (myID = 123) You are assigning myID with the value of 123 in this if statement. Are you sure this is what you want? If you want to compare with 123, then it should be if(myID == "123") <font=arial>Weiye Chen Life is hard, yet we are made of flesh... Re: if statements with a string? Anonymous11-Jul-05 17:14 Anonymous 11-Jul-05 17:14  Weiye Chen wrote: You are assigning myID with the value of 123 in this if statement. Are you sure this is what you want? well the truth of the matter is that in the end the desired result will be to pull the data from either a db or assign a solid value at a later date, right now i was just trying to get the unit to run. thanks for the quotes..... that worked. any ideas on the "Use of unassigned local variable 'myID'" ? newbie- Re: if statements with a string? Weiye Chen11-Jul-05 17:34 Weiye Chen 11-Jul-05 17:34  Anonymous wrote: "Use of unassigned local variable 'myID'" This is because you had declare the variable myID and used it without assigning any value to it such as this txtbx.Text = myID; Since myID has not been assigned any value, txtbx.Text would therefore have an unknown value/type which can be dangerous. <font=arial>Weiye Chen Life is hard, yet we are made of flesh... Re: if statements with a string? User 209307311-Jul-05 22:17 User 2093073 11-Jul-05 22:17  If you want to compare a string with a number you should convert the string at first.See the following code : if(intValue == int.Parse(textBoxText)) {...} [ _ Always there is another way _ ] Re: if statements with a string? sayinsinan12-Jul-05 3:42 sayinsinan 12-Jul-05 3:42  A friend had wrote that you can use the if statement as if (txtbx=="123")... this is axactly true and there is anoher way to convert your variable MyID. you can do it like this: Convert.ToInt32(txtbx.Text)... but there is and issue here, at the beginning you must define your variable as integer. if you define a string variable and then if you try to assign it to integer variable you will have the similar problems. Good Luch on your work. i hope you will be succesfull... sayinsinan C# DatePicker epfuller11-Jul-05 15:41 epfuller 11-Jul-05 15:41  I would like to figure out the best way to add a DatePicker to a webform. I am currently just have a button on the webform. When the button is pressed, I would like the Calendar to popup. I also have the calendar inside of a div. I am not quite sure how to make the calendar show up when the button is clicked. Eric Re: C# DatePicker Christian Graus11-Jul-05 17:02 Christian Graus 11-Jul-05 17:02  There are a number of solutions to this problem on the web already. Christian Graus - Microsoft MVP - C++ Adding a scrollbar to a panel Ruskin Dantra11-Jul-05 12:33 Ruskin Dantra 11-Jul-05 12:33  Can someone please tell me how to add a scroll bar to a panel in C#, tried everything but the scroll bar never appears on the panel regardless of whether a control is out of its view or not. Any help would be appreciated

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