I'm new in WPF and C#. I know a lot of VB.NET and I'm used to the way when I call a form object like textboxes, etc. I'm calling it from another form. Now, I'm using WPF, I'm confused. Because I have a Main Window. And I want to add and item to a listbox in the Main Window from a Class. In VB.Net , its just like this.
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I have this application that I haven't created and I don't have the source for. But it's really handy in handling and recording the time I've used on different projects. But it has this annoying pop-up that comes up that contains a window and some debug text I believe. It wasn't done by a professional, it was just a hobby project. Everything is working even though this window appear. So I was wondering if it's possible to "hijack" a window and minimizing or closing it somehow?
View 1 RepliesI am utilizing a centralized class object that needs to call another class object. The program itself will do something like the following
sFieldValue = CentralObject.ObjectHandler(1, TestFunction, "FunctionVar,FunctionVar2,FunctionVar3")
In the central object I have a function
Public
Function ObjectHandler(ByVal ObjectType
As
Integer,
[code]....
I am somewhat new to object oriented programming and am attempting to flatten a Linq object hierarchy by using a shim class.how to initalize a derived class with property values from a base class?I have two objects, a base object with about 100 properties, and a derived object which inherits from the base object and adds a few additional properties beyond those of the base object. My simple constructor creates the derived object, but I am looking for a way to initialize the derived object properties with values from the base object.Right now I am using reflection to iterate over the properties individually and I suspect there may be a better way. The following example shows my shim class constructor for the derived class, and two properties:
newProperty1 - a new string property of the derived class
flattenedProperty2 - a new string property of the derived class, copied from a 2nd-level object of the base class
Code example:
Public Class derivedObj
Inherits baseObj
Private _newProperty1 As String[code].......
Is this the correct constructor approach to flatten the object hierarchy using a shim class? My second question relates to initialization of properties in the derived class. The constructor above creates the derived object, but what is the best way to initialize the derived object properties with values from the base object? The following code uses reflection to iterate over the properties individually, but I suspect there may be a better way.
Code example:
' property names are in the string array fieldNames
'baseObjQuery is an ienumerable of baseObj
'derivedObjList is a list of derivedObj[code].....
Is there a simple way to initialize values for the properties in the derived object based upon the values of the common properties in the base object?
As I understood , The property grid is given an object which it can manipulate by extracting its Properties using reflections.
My problem is that I have a set of Parameters that is determined during run-time , thus I can't staticly compose a class with properties to represent this set.
I have two idea in mind to solve this problem but both are complex and will probably consume lot of time , infact i will say they are not practical under my time constraints. One is to use Reflection Emit in order to define a class dynamically and the other is to dynamiclly build a C# source file and then compile it using CodeDom.
Can Property grid behave in a different manner( other then extracting the Properties of an object using reflections ) that can suite my problem?
I want to say that the reason I went to the property grid from the begining was its ability to provide realy nice Data Retrieval UI for common types.For color you autometically get a palette , For dataTime you automatically have a nice calender. I would like to get those things automatically If possible.
Here is the structure that I have:
Friend Class StandardFormatFile
Friend fileType As String
Friend numberOfSeries As Integer
[code].....
I have some classes, BsfciFile and StudyFlashCard. Bsfci is the extension to which I save my set of flashcards in an INI format. I am currently working to transform my code from using Windows API calls to access the INI to using a IniFile class that I found on the internet. I would like the BsfciFile to have a Array of StudyFlashCard objects, but I would like the StudyFlashCard class to use the IniFile class object contained in the BsfciFile class. I can pass the IniFile from the BsfciFile class to the constructor for the StudyFlashCard class, but I want it to modify the same IniFile as the BsfciFile class has later on.
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I am trying to create an list or an array of a class.Here is my "Ingredient" class that I am trying to create a list of:[code]In my "recipe" class, I am want to create a list (or array) and I am drawing a big blank on how to do it. Can anyone point me in the right direction?
View 2 Repliesdim myCollection as new Specialized.StringCollection
dim myFoundThings as new ArrayList
dim index as Integer
dim newResultMemberName as String
[code]....
This is part of some code that will run without user interaction once it's spinning away, and I need to create a unique object from some items found in a StringCollection, naming the objects using information found in the strings stored in that StringCollection.
I'd like to have something like:
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i've created bunch of classes. i have webservices which reference these classes and contains the classes as parameters and return objects.when i call the weservice, i have to convert the class to the webservice object else i can type conversion error.is there a generic way to convert between these types without having to assign the values by hand?
for example
public class person
fname as string
lname as string
end class
[code]....
i would liek ot be able to call the web service and return the data type back and have a generic coversion instead of as above in stead of:
dim wsPerson as wsReference.Person = ws.getperson()
I have a class in which some of the fields are also classes.
I can put values in the "normal" properties, but in the others when o try to assign values it gives the: "Object reference not set to an instance of an object"
But the code compiles fine.
dados_Defenicao = New ServiceReference1.draftClaimEntryDefinition
dados_Defenicao.arCode = "123"
dados_Defenicao.claimMarket.warrantyType = "w" - Here it gives the error
If we are within the derived class then ofcource we can use MyBase keyword to access base class's object reference . That's fine , how can we take that base class's object reference outside that derived class's definition.My following code will explain what i want . Actually that is giving error right now, but it is explaining my requirement .
Public Class Base
Public x As String
End Class
[code]....
Actually there is error in ReadOnly Property BaseReference's Getter . Error is "Error 1 'MyBase' must be followed by '.' and an identifier. " how can i get base class object reference in Main method ?
If my namespace is Company.Application.EDI.Acknowledgement and if I stick with theprogramming practice of one class per file then should my class be saved asacknowledgement.vb? Are there any gotchas that will come up?
View 5 RepliesI have a Parent Class Called Fuselage that containsfour child classes called Forebody, CenterBody, AftBody, and CrossSection. CrossSection classcontains objects common to Forebody, CenterBody, and Aftbody (example: width). How do I access thewidth property in CrossSection from within the classForebody?
Public Class Fuselage
Dim Forebody As ClsSection
Dim Centerbody As ClsSection
[code].....
I am developing an IT Asset Tracking application using VB 2005 and SQL Server 2005 Express edition. Will I need to create classes to represent objects such as Computers, Printers, Scanners/Faxes, Contracts, Purchase Orders etc or are there any other approaches.For example, if I am correct, I will have a class called Computer and its properties will include Make,Model,CPU,Hard Disk,Memory etc. Is this the right approach.
Computers can be split up into Desktop PC's, Servers and Notebooks. Would I have to create separate classes for these as well or would they be ok under the Computer class.Once I create an object from the class, how can I use the object to interact with the SQL db.I am a beginner to VB.NET 2005 therefore I am slowly getting to grips with OOP.
bare with me during this silly example. :-) Let's say I have a class like this:
Public Class Animal
Public iLegs as int32 ' Number of legs
Public bWings as Boolean ' Wings? Yes/No
End Class
And another class that inherits the "Animal" class and adds one more property:
Public Class ScaryAnimal
Inherits Animal
Public iScariness as int32 ' 0-100, how scary is it?
End Class
Now, if I have an instance of "Animal" with some values in it, and I decide I want to cast it to a ScaryAnimal for some reason, how do I do that without having to create a new instance of "ScaryAnimal" and copy each property value?Basically I'm looking for a way to do this, without having to write the lines marked with '*** below:
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If you want a instance of an object to be created when a form loads or another class is created, you have two options:
Public class example
private IAmAObject As IAmAObject
public sub new()
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Or like this:
public class example
private IAmAObject as new IAmAObject
public sub new()
[CODE]...
I always use the first one. It's more type work but I think it's neater. How about you people and is there any real difference between the two?
If I have a console application containing the class
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I'm not a VB.NET guy. Am I correct in assuming I need to instantiate my object first? Why does the VB.NET example differ?
i just want to know how to maintain the position of an object w.r.t the window in vb when i resize the window during run-time.i tried anchoring it from all sides and the object resizes along with it.
View 6 RepliesI created a modal dialog as a WPF window that changes some settings in the main window application. How can I refer to a member of the main window?
View 2 Replieshow can i Discover a Window Class Name ?
View 3 Repliesif I put controls on form1 like button,textbox....etcwhy called this control fields not object in the class diagram ?
View 7 RepliesI have a piece of vb.net code that finds the nunit.exe process like thisDim proc2 As EnvDTE80.Process2 = dbg2.GetProcesses(trans, "myPC").Item("nunit.exe")now I'd like to press a button on the window of that process so I do thisDim ButtonHandle As IntPtr = FindWindowEx(X, 0, "Button", "Run")SendMessage(ButtonHandle, &HF5, 0, 0)
View 1 RepliesI have two forms that are called by the main form. One is named frmEdit, and is invoked by the ShowDialog (modal) method. The other is named frmSearch and is invoked by the Show (non modal) method. In both cases I want to preserve the last window position so each form (class) begins with Public Class frmEdit (or frmSearch):
Dim lastx as Integer = -1
Dim lasty as Integer = -1
in the Shown event handler for each form I have the code
If lastx >= 0 Then
Me.Left = lastx
Me.Top = lasty
End If
and in the FormClosing handler I do
lastx = Me.Left
lasty = Me.Top
What I don't understand is why the frmEdit (modal) form remembers its previous position but the frmSearch (non-modal) does not. frmSearch always invokes with lastx and lasty equal to -1.
I am writing a custom class file which I intend to use with a WPF application. How can I refer to a WPF window from the class file?
View 2 Replieshow do i resize an object(listview datagridview) if the window is maximized? and how to properly place the buttons when maximized?
View 2 RepliesI am trying a .Net remoting project hosted in a console application.I have the following code in remote object class.
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i have an external form, and it has a label, which his name is: Static62 how do i read the label into my vb.net program?
View 10 RepliesI'm trying to use one project as a reference for writing another project, and I want to see as much code as I can from that project on another monitor. Since Code is only so wide (assuming you break-lines), I have a lot of wasted horizontal space. Is there any way in the IDE to do a vertical split of a class code window? I know you can do a horizontal split, but although that shows you two sections of code at once, it doesn't increase the amount of code you see, because it sacrifices one code's space for another.
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