C#

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Re: C# - Display forms Dynamically Christian Graus25-Jun-07 0:56 Christian Graus 25-Jun-07 0:56  If you don't want to do it via a select list, then you probably need to store the class names and use reflection to create them. Christian Graus - Microsoft MVP - C++ "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum ) Re: C# - Display forms Dynamically robbie.t25-Jun-07 1:02 robbie.t 25-Jun-07 1:02  can u pls explain the way how it can be done using reflection? i will have only the name of the forms available and the selected form's name. it will be string variables. i need to refer the corresponding forms using this string variables.. regards, robbins Robbins Re: C# - Display forms Dynamically Urs Enzler25-Jun-07 1:36 Urs Enzler 25-Jun-07 1:36  Let me ask you something first: How do you get the values that will be displayed in the list? -^-^-^-^-^- no risk no funk Re: C# - Display forms Dynamically robbie.t25-Jun-07 2:10 robbie.t 25-Jun-07 2:10  the list will be from the Config file. Robbins Re: C# - Display forms Dynamically Urs Enzler25-Jun-07 2:14 Urs Enzler 25-Jun-07 2:14  Then I suggest that you use a custom config section and define a text that will be displayed in the list and a type that you can use to instantiate an instance of the according form. Something like: <FormSelection> <Form text="My first Form" type="MyNameSpace.MyFirstForm, MyAssembly" /> <Form text="My second Form" type="MyNameSpace.MySecondForm, MyAssembly" /> </FormSelection> -^-^-^-^-^- no risk no funk Re: C# - Display forms Dynamically robbie.t25-Jun-07 2:26 robbie.t 25-Jun-07 2:26  similar is my config file. and the list is populated properly. but then, in the button click event, i tried to create an object of the selected form. there it gives an error saying "Value of type 'String' cannot be converted to 'System.Windows.Forms.Form'." Robbins Re: C# - Display forms Dynamically Urs Enzler25-Jun-07 2:38 Urs Enzler 25-Jun-07 2:38  has to be something like: string typeString = ... string from config; Type type = Type.GetType(typeString); Form form = (Form)Activator.CreateInstance(type); -^-^-^-^-^- no risk no funk Re: C# - Display forms Dynamically robbie.t25-Jun-07 2:54 robbie.t 25-Jun-07 2:54  Thanks a lot dude. it works. regards, robbins. Robbins Re: C# - Display forms Dynamically Urs Enzler25-Jun-07 2:59 Urs Enzler 25-Jun-07 2:59  I'm happy I could help. I'd be glad if you would rate my posts Happy programming Urs -^-^-^-^-^- no risk no funk Re: C# - Display forms Dynamically robbie.t25-Jun-07 3:04 robbie.t 25-Jun-07 3:04  I rated your replies. because it helped me building this configurable User Interface. i got the exact answer i wanted. once again, thanks to you. regards, robbins. Robbins How to keep the Window in WorkArea MarkPhB25-Jun-07 0:39 MarkPhB 25-Jun-07 0:39  Hi, my question is how can i prevent that the user move my window of the workarea ? and how can i tell my window that it shall be stick to the edge of the workarea when its close to it C# Parallel Port Programming mercenary0125-Jun-07 0:26 mercenary01 25-Jun-07 0:26  How can I get to see the values coming into LPT1 378H? Is there a general method belonging to a class to call? Thanks Samuel Re: C# Parallel Port Programming Hesham Yassin25-Jun-07 0:59 Hesham Yassin 25-Jun-07 0:59  of cource, you need to use the dll file inpout32.dll. [importDll....] if this is not enough for you, i can send you a code which makes the work. Re: C# Parallel Port Programming mercenary0125-Jun-07 1:01 mercenary01 25-Jun-07 1:01  I have the dll file...but I can't figure out how to listen to the port..I have void PortAccess(Address)... why is it void??? how to I read than? the output is ok....but I cannt read the port Samuel Re: C# Parallel Port Programming mercenary0125-Jun-07 1:09 mercenary01 25-Jun-07 1:09  hmmm, I have the following in the class is it correct public class PortAccess { [DllImport("inpout32.dll", EntryPoint="Out32")] public static extern void Output(int adress, int value); [DllImport("inpout32.dll", EntryPoint="Inp32")] public static extern voidInput(int adress); } shouldnt the last line be public static extern int Input(int adress); Re: C# Parallel Port Programming Hesham Yassin25-Jun-07 10:05 Hesham Yassin 25-Jun-07 10:05  public class PortAccess { [DllImport("inpout32.dll", EntryPoint = "Out32")] public static extern void Output(int adress, int value); [DllImport("inpout32.dll", EntryPoint = "Inp32")] public static extern byte Input(int adress); } // PortAccess Re: C# Parallel Port Programming mercenary0125-Jun-07 15:58 mercenary01 25-Jun-07 15:58  Thanks its working now Differance Between Protected and protected internal Rahul.RK24-Jun-07 23:54 Rahul.RK 24-Jun-07 23:54  Hello Friends, I want to know what is difference between protected and protected internal. i know that protected means access limited to type and types derived from it. and protected internal means access limited to type and types derived from it or in the assembly. Do protected is subset of protected internal. And do protected is required when we specify internal as access specifier. please give example that will be helpfull.. Thanks in advance. rahul kulkarni Re: Differance Between Protected and protected internal Colin Angus Mackay25-Jun-07 0:00 Colin Angus Mackay 25-Jun-07 0:00  Rahul.RK wrote: I want to know what is difference between protected and protected internal. According to the documentation[^] the answer is: protected = Access is limited to the containing class or types derived from the containing class protected internal = Access is limited to the current assembly or types derived from the containing class Upcoming events: * Glasgow: Mock Objects, SQL Server CLR Integration, Reporting Services, db4o, Dependency Injection with Spring ... * Reading: Developer Day 5 Ready to Give up - Your help will be much appreciated. My website Re: Differance Between Protected and protected internal Rahul.RK25-Jun-07 0:05 Rahul.RK 25-Jun-07 0:05  hello Thanks for reply... i got the concept according to definition. But as internal gives access to all the assembly then what is use of protected? Thats my question.. Rahul Kulkarni Re: Differance Between Protected and protected internal Colin Angus Mackay25-Jun-07 0:09 Colin Angus Mackay 25-Jun-07 0:09  Rahul.RK wrote: But as internal gives access to all the assembly then what is use of protected? So you can derive a class from it from outside the assembly. Upcoming events: * Glasgow: Mock Objects, SQL Server CLR Integration, Reporting Services, db4o, Dependency Injection with Spring ... * Reading: Developer Day 5 Ready to Give up - Your help will be much appreciated. My website Re: Differance Between Protected and protected internal Rahul.RK25-Jun-07 0:18 Rahul.RK 25-Jun-07 0:18  Thanks alot.... Will you please give me any helpfull site of book name which will give me idea of all this basic fundamentals of C#.Net Rahul Kulkarni Re: Differance Between Protected and protected internal Colin Angus Mackay25-Jun-07 0:23 Colin Angus Mackay 25-Jun-07 0:23  There are lots of beginner books. It really depends on your style of learning. Go to the book store and browse through a few books. Pick the one that appeals to you most. Upcoming events: * Glasgow: Mock Objects, SQL Server CLR Integration, Reporting Services, db4o, Dependency Injection with Spring ... * Reading: Developer Day 5 Ready to Give up - Your help will be much appreciated. My website Re: Differance Between Protected and protected internal Rahul.RK25-Jun-07 0:25 Rahul.RK 25-Jun-07 0:25  Thanks for help. Rahul Kulkarni DBNull.Value problem t4ure4n24-Jun-07 23:46 t4ure4n 24-Jun-07 23:46  Hello i am facing a slight problem with Store a record in the database. I have a column of Type Decimal (It can have null values in the DB). i take the input in a textbox and saves it to the database. dataRow["SPEED"] = (this.tbSpeed.Text == "" ? DBNull.Value.ToString() : this.tbSpeed.Text); If I leave it blank it gives me following error An unhandled exception of type 'System.ArgumentException' occurred in System.Data.dll Additional information: Input string was not in a correct format.Couldn't store <> in SPEED Column. Expected type is Decimal What could be the solution to this problem o O º(`'·.,(`'·., ☆,.·''),.·'')º O o° »·'"`»* *☆ t4ure4n ☆* *«·'"`« °o O º(,.·''(,.·'' ☆`'·.,)`'·.,)º O o°

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