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Re: Interfaces Paul Riley27-Sep-02 14:16 Paul Riley 27-Sep-02 14:16  That's not an answer... at least not to the question I asked When I said "read only", I didn't mean "ReadOnly", I meant "get but not set". Then it's not available in the designer or the program (actually, it can still be visible in the designer but greyed out). Paul Re: Interfaces afronaut1-Oct-02 10:35 afronaut 1-Oct-02 10:35  I think it's just that old java habits die hard. Also, returning objects gives me a little more ease in passing them to additional methods. As far as writing an article, great idea! I may have to lock myself in the labratory for a few hours tonight. Best regards, *->>Always working on my game, teach me *->>something new. cout << "dav1d\n"; Class Builder Wizard afronaut27-Sep-02 5:54 afronaut 27-Sep-02 5:54  Is there a class builder wizard in Visual Studio.NET? If not, is there another free/cheap one available? Thanks much *->>Always working on my game, teach me *->>something new. cout << "dav1d\n"; Re: Class Builder Wizard leppie27-Sep-02 6:51 leppie 27-Sep-02 6:51  I started working on one, but phew it's gonna take some time still.... Give them a chance! Do it for the kittens, dear God, the kittens! As seen on MS File Transfer: Please enter an integer between 1 and 2. Re: Class Builder Wizard afronaut27-Sep-02 11:08 afronaut 27-Sep-02 11:08  leppie wrote: I started working on one, but phew it's gonna take some time still.... Open Source it already! *->>Always working on my game, teach me *->>something new. cout << "dav1d\n"; why I cann't cast the object???? fftongzhi27-Sep-02 0:23 fftongzhi 27-Sep-02 0:23  I pocket a class in a dll.And the class implement a interface. and then I load the dll with these code: Assembly a = Assembly.Load("mydll"); Type t = a.GetType("mydll.myClass"); object obj = Activator.CreateInstance(t); MyInterface Imyclass=(MyInterface)obj;//this line will cause runtime error; The biggest problem is that when I use it as below,it can work. import the dll to my project first. MyInterface Imyclass=new myClass(); What is the problem??? Anyone can help??? lost my way Re: why I cann't cast the object???? leppie27-Sep-02 2:34 leppie 27-Sep-02 2:34  fftongzhi wrote: Type t = a.GetType("mydll.myClass"); object obj = Activator.CreateInstance(t); Type t2 = a.GetType("mydll.myClass"); Type t = t2.GetInterface("MyInterface"); MyInterface obj = (MyInterface) Activator.CreateInstance(t); Does that work? Give them a chance! Do it for the kittens, dear God, the kittens! As seen on MS File Transfer: Please enter an integer between 1 and 2. Re: why I cann't cast the object???? fftongzhi27-Sep-02 16:02 fftongzhi 27-Sep-02 16:02  Are you fun me???Interface can not be create a instance. Type t = t2.GetInterface("MyInterface"); MyInterface obj = (MyInterface) Activator.CreateInstance(t); Absolutely these codes will make a exception; Can you make a test before makeing your answer? lost my way Re: why I cann't cast the object???? leppie27-Sep-02 16:21 leppie 27-Sep-02 16:21  fftongzhi wrote: Type t = t2.GetInterface("MyInterface"); Oops, was pasting from my rusty brain Type t = a.GetType("mydll.myClass"); //do some test here to make sure class has interface MyInterface obj = (MyInterface) Activator.CreateInstance(t); To be honest, I think the problem is as Eric described it. Define your inferface in another assembly, compile once and leave it Give them a chance! Do it for the kittens, dear God, the kittens! As seen on MS File Transfer: Please enter an integer between 1 and 2. Re: why I cann't cast the object???? fftongzhi27-Sep-02 16:36 fftongzhi 27-Sep-02 16:36  Apologize for my discourteous words. I can get the interface in myclass. let's try again. ( ( ( ( lost my way Re: why I cann't cast the object???? Eric Gunnerson (msft)27-Sep-02 8:43 Eric Gunnerson (msft) 27-Sep-02 8:43  Is the interface compiled along with the assembly that you load? Interfaces have assembly identity, so both the assembly you'll load and the loader need to reference the interface in the same assembly. There can also be version number issues. If the interface gets recompiled after you've built mydll, the versions won't match. Re: why I cann't cast the object???? fftongzhi27-Sep-02 16:21 fftongzhi 27-Sep-02 16:21  Thank you first,but the problem is still here. I think it doesn't matter with the version. I made a test like this. First I build a interface(Imyclass) in a Imyclass.dll; Reference it in the project of myclass which implemented the Imyclass and build a myclass.dll And then,reference the Imyclass.dll to the project want to load myclass.dll at runtime. and these codes will still create a exception(specified cast is not void); Imyclass ImyCls =(Imyclass)Activator.CreateInstance(t); In this case,the version of Imyclass.dll will same in each project,and the problem is still going on. Some thing special is ,in myclass,I used some struct defined by myself for fuction parameters and return value.Is that the problem of system defult serialization??? lost my way Re: why I cann't cast the object???? fftongzhi27-Sep-02 20:30 fftongzhi 27-Sep-02 20:30  very lucky,it works. the problem is I use the interface dll in diffirent version. Becouse I made a cope of the dll for load,when I update one I missed the other one.hehe............ lost my way ADO.NET with C# Rickard Andersson2027-Sep-02 0:20 Rickard Andersson20 27-Sep-02 0:20  Is there any tutorials about ADO.NET in C# somewhere that you might know? I want to learn how to add, remove and update an Access database. Rickard Andersson@Suza Computing C# and C++ programmer from SWEDEN! UIN: 50302279 E-Mail: nikado@pc.nu Speciality: I love C#, ASP.NET and C++! Re: ADO.NET with C# leppie27-Sep-02 2:38 leppie 27-Sep-02 2:38  Rickard Andersson wrote: want to learn how to add, remove and update an Access database. Why not use OleDb ? I can email you a little project I did for my folks's company. Just a Sales Reporting app on Access Give them a chance! Do it for the kittens, dear God, the kittens! As seen on MS File Transfer: Please enter an integer between 1 and 2. Re: ADO.NET with C# Rickard Andersson2027-Sep-02 3:55 Rickard Andersson20 27-Sep-02 3:55  Yes for sure! It was OleDB I meant Rickard Andersson@Suza Computing C# and C++ programmer from SWEDEN! UIN: 50302279 E-Mail: nikado@pc.nu Speciality: I love C#, ASP.NET and C++! Re: ADO.NET with C# David Stone27-Sep-02 8:42 David Stone 27-Sep-02 8:42  ADO.NET has OleDB classes. Why not use those? Besides that, the System.Data.OleDb.OleDbDataAdapter is sweet. If the functionality is in .NET, why not use it? Norm Almond: I seen some GUI's in my life but WTF is this mess Leppie: I made an app for my sister and she wouldnt use it till it was colorful enough Norm:good point leppie, from that statement I can only deduce that this GUI must be aimed at children Leppie:My sister is 25 -Norm on the MailMagic GUI Re: ADO.NET with C# Derek Smigelski28-Sep-02 10:06 Derek Smigelski 28-Sep-02 10:06  Can some one help me with how to start setting up an MS-SQL Connection in C#? Re: ADO.NET with C# David Stone28-Sep-02 10:32 David Stone 28-Sep-02 10:32  There are some pretty good articles here: http://www.codeproject.com/cs/database/[^] Norm Almond: I seen some GUI's in my life but WTF is this mess Leppie: I made an app for my sister and she wouldnt use it till it was colorful enough Norm:good point leppie, from that statement I can only deduce that this GUI must be aimed at children Leppie:My sister is 25 -Norm on the MailMagic GUI may i read the same object on network from a file? imran_rafique26-Sep-02 16:27 imran_rafique 26-Sep-02 16:27  if i hava a class class a { int a; CString str; }; i want to write its object into a file and send that file through a network to different computer and i want to recive that object again if i have the same class there. may i read the same object on network from a file? any body can explain my idea into code like how to write object into file ? how to read object on the network (having same class there) from file ? r00d0034@yahoo.com Re: may i read the same object on network from a file? Rickard Andersson2026-Sep-02 20:41 Rickard Andersson20 26-Sep-02 20:41  Aren't ya in wrong forum now? Rickard Andersson@Suza Computing C# and C++ programmer from SWEDEN! UIN: 50302279 E-Mail: nikado@pc.nu Speciality: I love C#, ASP.NET and C++! how to show gif image on toolbar? bclangren26-Sep-02 15:02 bclangren 26-Sep-02 15:02  on toolbar i want to show show a gif , how to do ? study and user Re: how to show gif image on toolbar? Luis Alonso Ramos27-Sep-02 4:36 Luis Alonso Ramos 27-Sep-02 4:36  bclangren wrote: how to do ? Toolbars requiere an ImageList to get the pictures from. The documentation says that an ImageList can be created from a bitmap, icon, or metafile. But the Add method of the Images property takes an Image as an argument, so you could probably get an Image for the GIF file (or JPG or whatever) with Image.FromFile for example and add it to the imagelist. I have not tried it, but it could work. -- LuisR ──────────────   Luis Alonso Ramos   Chihuahua, Mexico   www.luisalonsoramos.com "Do not worry about your difficulties in mathematics, I assure you that mine are greater." -- Albert Einstein ctl+c problem Anonymous26-Sep-02 9:53 Anonymous 26-Sep-02 9:53  In winforms, I have a datagrid which loads more than thousand of records. If I select all of them, and copy( ctl+c), the application hangs.I need to kill the application through task manager. However, if choose a reasonable small number of records( 50 for example), it can copy them and paste them in notepad,excel,... in just a second. But if I do not want to limit user to select below certain number of reocrds in order to copy, how should I do to stop application hanging? Thanks! Accessing data in one assembly from another ez226-Sep-02 9:30 ez2 26-Sep-02 9:30  I have two assemblies (1.consoleApp1.exe, 2.Log.dll) Both assemblies use the same namespace and consoleApp1.exe has a reference to log.dll. My problem is that I can't reference an object from log.dll which is located in consoleApp1.exe. I get the following error message " namespace or type could not be found. Are you missing an assembly or namespace?" Also note, I can reference log.dll from consoleApp1.exe just fine. It's only the other way around where I'm having problems. I'm new to this, so any suggestions as to why this is happening would be great.

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