I'm trying to make a Toolbox component which the user can drag onto a form in the VS Designer. The component has to recognize the Form it is on, in order to handle certain Form events. I would prefer to do it without requiring the user to add any code to the form. Does anyone know a way the component can get the identity of the form?
View 4 RepliesI recently have been developing an application in .net that uses lots of components created as digital/analog input/outputs, and, when each component is clicked shows a form that shows it's state.The problem is that the form allows to change the state of the component and I don't really know how to reflect the change made in the windows to the component variables, as I don't know if there is a way to call the parent from a windows form or any similar way to do it.
View 5 RepliesI am converting an old Vb6 solution to .net 2.0 in vs2010. I've been working in C# for about 3 years now and .net for 5. I don't recall having this problem in C#, but if I want initialize a readonly collection of DerivedControlFoo Is there a clean way to do it besides creating a sub to do it all off somewhere else? I'd love to be able to do it at the class level at the declaration for readability and simplicity.
View 1 RepliesVS won't recognize this as a class, I get the "Type 'ManagementObjectSearcher' is not defined." error. Usually when this happens I just need to import something, in this case it's System.Management, however this doesn't do anything. I'm quite new to programming so it's probably some very simple mistake or misunderstanding.
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Let's say that my string is: "c: est" where "test" is a folder. How do I tell my app that it is a folder?
View 2 RepliesI can't seem to get it to recognize System.Data.OracleClient. I downloaded and installed the 11gR2, added a reference to Oracle.DataAccess. Looks like there is a 4.112.1.2 and a 2.112.1.2 versions. I'm tried adding both to the project, but neither are giving me access to that assembly. i.e.
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i am trying to make a proper keylogger. i have programmed the qwer QWER 123 and !@# keys but it wont read the ,< .> type ok keys for some reason, how to make the program read these keys
View 10 RepliesI'm building an application in which a certain CSV schedule is read and searched for time and date values.
I want to read each cell in the CSV file with a streamreader and have VB determine if the contents of the cell represent a date (like 31-10-2011), a time (like 22:30) or random text data which is not formatted like a date or time.
How can I make VB recognize a string as either a date, a time or neither one, so I can use this string formatted as Date, Time or discard of it?
The contents of the CSV file will look something like this:
;Schedulename;text;text;31-10-2011;text;text;6-11-2011;text;;;text
Although the CSV file will never contain much data, the position of the date and time fields in a row may vary, so I cannot tell VB which cell to read as date/time. It has to recognize the value as date, time, or unusable text.
Dim CSVReadline As New System.IO.StreamReader(schedule.csv")
Cellcheck = CSVReadline.ReadLine()
String = Cellcheck.Split(";")
For i = 0 to 10
Scheduledate = String(i) ............ etc.
Ok i got the mouse to click, now i need to get like a IF statement for the left and right mouse click, e.g IF Rightmouseclick then do whatever and i need a leftmouse click one aswell, i found this on another thread but it doesn't work??
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How do I make VB.net console recognize the color red and green at XY-axis? I start up the program. The program check...if X450 and Y503 has a green pixel or something like that...do this. If X450 and Y503 has a red pixel or something lik that...goto line number. You know what I mean? I took the X450 and Y503 as random numbers.
View 1 RepliesI have 2 forms main_frm and copying_frm. In main_frm, there is a list view that is populated with file names. The user then clicks save and all the files in the list are copied to a folder that they choose using a folder browser dialog. When this happens, I do copying_frm.ShowDialog() to display the copying_frm. The copying_frm contains a progress bar and a cancel button. I can get the progress bar to indicate how much has been copied. But that freezes up the application. To get around this, I create a new thread (called copyingThread) that copies the files. When that thread runs though, it can't access the waitingList_lvw in main_frm. For example, in the function that the copyingThread executes, if I have this line of code: MsgBox(main_frm.waitingList_lvw.Items.Count.ToString()) the result is 0. Also, I don't get any errors and no files are copied. How do I access waitingList_lvw in main_frm from a thread called copyThread that was created in copying_frm?
View 6 RepliesCreate a DLL component for database operation and use created component in another project. Required methods, events and properties
a. Connect
b. Add
c. Delete
d. Save
e. Record navigation (first, next, previous, last)
f. Properties for all database fields
g. Events for validation of database fields.
I would like to save a form to complete in the properties of "My.Settings" Is this possible? [code]where my.setting.form2 is a system.windows.form. form.it is possible to do that ?
View 8 RepliesI have created a class and want to distribute it without giving off my code/create it as an application. I am aware that components are nearly no longer used and their disadvantages. I dont need to draw anything on the ui. (I know basically components are used for this aim but I just need to try this :] )
My question is: My class uses a webbrowser because webclient and web request don't work for me. When I start vs 2010 and select new project - Class Library and include the namespace System.Windows.Forms it doesnt find it. So first of all should I select class library to create a component and how could I include the webbrowser object?
I'm developing a Component. I'd like to do something when the component is dragged from the toolbox and dropped onto a form. For example display an about box.I don't want to annoy the developer by popping up an about box every time he refreshes his display or reloads the form.
View 6 RepliesI drag a toolstrip component to my form. I insert two buttons n two separators. During i configure these items, some time it will disappear but in the properties side, i still can found these items still exists. But i can't found these component in my form. I tried to add same item with same name n it show a error message box(because already exist).
View 2 Repliesi have an ocx called TTF16.ocx. It is 32 bit and I placed it in Windows/SysWoW64 and register it as an admistrator (My system is Windows 7 64 bit). The control appears in the toolbox. When I try to add it in the form I got the following warnings
Warning 3 Cannot get the file path for type library "bef6e001-a874-101a-8bba-00aa00300cab" version 2.0. Library not registered. (Exception from HRESULT: 0x8002801D (TYPE_E_LIBNOTREGISTERED)) F1koe3
Warning 4 Could not resolve COM reference "b0475000-7740-11d1-bdc3-0020af9f8e6e" version 6.1. Object reference not set to an instance of an object. F1koe3
Warning 5 The referenced component 'TTF160' could not be found.
how to find the form that a component resides on.
I googled this and found several articles stating to do it as follows:
vb
Public ReadOnly Property FindForm() As ContainerControl
Get
Return mc_FindForm
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Is there a way to resize all component when the form is maximized?
View 1 RepliesIs it possible to scroll the webbrowser-component to a form on the webpage?
View 1 RepliesJust tried out a new Excel component. (Spire.Xls)I make a reference to the DLL and write my code to create an excel workbook. Everything seems fine but when i compile my program i got this warningWarning1The referenced assembly "Spire.XLS" could not be resolved because it has a dependency on "System.Web, Version=4.0.0.0, Culture=neutral, ublicKeyToken=b03f5f7f11d50a3a" which is not in the currently targeted framework".NETFramework,Version=v4.0,Profile=Client". Please remove references to assemblies not in the targeted framework or consider retargeting your project.Mix-kasse
View 2 RepliesI have developed a Component and I want it to be able to detect when it's running in the IDE.
Or, let me rephrase that - I want my component to be able to detect when its parent form is running in the IDE.
I can use .DesignMode and a few other methods to detect when my component is running in the IDE (For example when my component is placed on a form etc)
But when the parent form is executed from within the IDE then .DesignMode returns false.
Is it possible for a component to detect if its parent (the form) was started via an IDE/Designer ? or via the command line/start menu or what ?
after i run the program, the form pop up showing no problem.however, when i click on the maximize button on the top right of the form, the form enlarge and fill the screen. but the components will not move accordingly.
View 2 RepliesI have an error that keeps regenerating when the form is closed and open back up.
1) Windows Form Application (Project: TestProject)
2) Add class in same project:
Public Class Test : Inherits System.Windows.Forms.TextBox
3) Drag and drop into the form within the project (works fine)
4) Close form
5) Re-open form... then error about the class Test in the project not defined
Actual Error: Type 'TestProject.Test' is not defined.
Is there a best way around this besides creating a separate project and putting the 'Test' class in that separate project and referring that separate project in the 'TestProject'?
Modified Added: By the way... i've used Global.TestProject.Test... but then again another error generate with the custom property within the 'Test' class.
Commonly if I maximized my form. It'll look like this And now, i just want to ask a simple question.. How to centered all those components if i maximized it??
View 1 RepliesI'm having problems with coding in VB 2010 Express. One of the many errors I am dealing with is the user interface form. It says it's a component, so I have to use it in a form.
View 2 Replies(I use VB 2008) I'm working with the webbrowser-component. I got a problem to fill a text-field. The textfield is named "description" but I cant fill it. I guess it's because it's more than one form on the page that got a element named "description".
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I've created a component whose name I'd like to be able to change while editing in the component tray. I've added a Designer action for a name property, but now I'm stuck.
Looking at the property grid, I can see that the name property is parenthesised, indicating that it's not a regular property.
creating a COM component Instance like this for supporting multiple version of COM components
Creating Instance
Private _cmObjct As Object
Public Property CreatingInstances() As Object
Get
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at the same time how to declare this method without referenced dll SSDP is an interface so how to declare this interface for my usage is this Correct ...?
Error: Dim d as Object = Activator.CreateInstance(Type.GetTypeFromProgID("SecureTronics.SSDP"))
Weird problem, it only happens for one of my clients, and it happens on all 3 of their computers. Their computers are Windows XP.My form has a Windows Media Player control on it, to play a video from the internet. When the form loads, I get an exception "External component has thrown an exception". It happens in the form's designer, in the InitializeComponent procedure, at this line:CType(Me.wmpVideo, System.ComponentModel.ISupportInitialize).EndInit()
It works great on 100 other clients computers, running XP, Vista, or 7, and this is the first person to have this issue. If I take the Windows media player out of the form, it works fine.BTW, those computers have Windows Media Player installed, I already checked.