Create 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 hear COM here and there and I want to know is COM and a COM dll the same thing, and most important: when I create a Class library project is that a COM component?
View 3 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.
Previously this was not problem on XP/Vista (with minor changes), but windows 7 (64bit), is having issue's and I thought it might be how I'm implementing this time around? This is the original version just gives a com exception error of {"Cannot create ActiveX component."} [Code]
View 1 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 RepliesPublic Class ExtendedDateTimePicker Inherits DateTimePicker
View 5 RepliesI'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.
I have a project in visual basic 6.0 and a ms access as a backend database.I want to create a component also in visual basic 6.0,out of my project and to call it to my project using dll.
View 2 RepliesI have been making a order processing system for a friends company and have 99% completed it. i was going through everything double checking all the components and i put a "DotNetBar" component on the form but then deleted it as i didnt need it. i only have a trial version of the dotnetbar and do not plan on publishing the software with the component on.
so after i deleted the component from the form i built a test version of the system and installed it on a different computer but when installing an error appeared saying something along the lines of dotnetbar component cannot be found. i couldn't find any trace of the component in the page.designer.vb file.
im by far no expert in vb (this is the first real program i have developed for actual use), i cannot find any way of getting all traces of the component of the project.
Given the following code and link to SkyDrive VS2010 project, how would I create this vb.net project and access it in my c# application?
//the following c# project reference to function in vb.net is not working
string retval = ConvertUTF8_toASCII.UTF8_toASCII(stirngToConvert);
I have a simple Win App VB project with a single form in it. I also have an Active X component which I am adding onto this form. This component is made in C++. On building the VB project i get the message "COM Reference 'CPPLib' is the interop assembly for ActiveX control 'AxCPPLib' but was marked to be linked by the compiler with the /link flag. This COM reference will be treated as a reference and will not be linked." but it compiles successfully. When i try rebuilding it or opening the view designer of the form VS2010 crashes. The project is locally creating two dlls namely "Interop.CPPLib.dll" & "AxInterop.CPPLib.dll". I have made the Embed interop types False for both these references.
View 2 RepliesI didnt know if this was the correct location to post this kind of question. My code is in C# however I am using the visualBasic. Interaction. CreateObject to connect to a OCX file. I notice that this works great for a while but if it continues to do its job for lets say a few days then I get and exception... "Can not create an ActiveX component." I am 100% sure that the ocx and dlls are registed correctly to the system.
View 2 RepliesI am using the following code to send an email thru Outlook 2003:
Dim omsg As Object
Dim oRcp As Object
Dim objCDO As MAPI.Session
[Code].....
I am develpoing a small vb.net forms application. From that trying to load the Autocad using the following code.[code]When creating the application for first time, it works fine. Loads the Autocad correctly. But for second time if run the application the following runtime error is occuring. "Cannot create ActiveX component" at the CreateObject line.I cant predict what is the problem. I've included the following references in my program.[code]
View 1 RepliesI am developing a VB2008 application that makes use of the Office Access runtime.I started development on Win7 64-bit & Visa 32-bit machines.The application runs just fine on the machines with VB2008 installed.I have used a number of tools to build the application installation and I am running into the same thing on all target test machines (currently XP Pro).The system fails when the Office Access portion of the code starts to run.Below is the Just-In-Time debug info.
I also notice that .NET 2 is being called.Is it wise to make .Net3x the preferred .Net client?In the application, I have specificed .Net3 (however, it does not look like it is being called).The target test machine (XP Pro) has .Net 2.3 and 4 installed.See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.
************** Exception Text **************
System.Exception: Cannot create ActiveX component.[code].....
How do I create a .NET component as a DLL and distribute it?
View 3 Replieswhen is the neccisity to create a component services for a DLL.
i ask because , i have a dll and the website runs fine if i just register the dll.
so when should i go for componet services
How do you create your own custom component for vb.net 2008? I want it to simply output to a .dll, not a whole winforms app.
How can I control the component? For example, I want my component to not have a visible design view, I want it to stay below like the stopwatch component and the notifyicon component and such, it is not something to be designed. Then, how do I edit the possible properties a user can control, and make them effect the end result?
I'm trying to fancy up a panel control with some style so I created a class as such.[code]...
View 6 RepliesI am getting error : ActiveX component can't create object. Actually I have VB6 Dlls where business logic is reside and I am calling that dll function in my vb.net application , all dlls are dependent on other dlls.I am getting the error from one of the dlls
View 4 RepliesI have VB6 ActiveXDLL called A.dll , I am referencing this DLL into my VB.Net Application.Now I am calling a function of A.dll in this project. A.dll function is referring to the function of B.dll ,C.dll ,C.dll further referrer to Z.dll and so on.when I am executing application it gives an error from B.dll that ActiveX component can,t create an object.
View 4 RepliesI created a VB.NET web site that must use an existing VB6 dll. In the VB.NET code, I use the dll like this:
Dim objTEST As CAPObject.TESTCls
"CAPObject.TESTCls")
objTEST.SetDefaults()
[code].....
My app is a classic vb6 app. I have distilled my problem down to fact that an activeX control can't be registered on Win 2008 64 Bit using Regsvr32 but can be registered on Win 2008 32 bit and on Windows 7, Vista, XP/Pro, Win 2000 etc. The classic vb6 app works well on every Microsoft platform except Win 2008 64 Bit. Some Win 2008 64 Bit systems seem to work and we're not sure why, but many don't. The application fails with 429 error when run and when you try to manually register the activex component using regsvr32, the registration process hangs with this result[code]...
View 2 RepliesI recently changed from vb 2008 express to vb 2010 express and converted a project I was working on to vb 2010. After conversion I added a lot of code and all worked well. Now I want to add some shapes from the vb power pack tools and I get the following error:
---------------------------
Microsoft Visual Basic 2010 Express
---------------------------
Failed to create component 'OvalShape'. The error message follows:
'System.InvalidCastException:
[A]Microsoft.VisualBasic.PowerPacks.ShapeContainer cannot be cast to [B]Microsoft.VisualBasic.PowerPacks.ShapeContainer.
Type A originates from 'Microsoft.VisualBasic.PowerPacks.Vs, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' in the context 'Default' at location
......
How can I recover from this?
I am attempting to learn how to develop applications to interact with the Autonomy WorkSite 8.5 server and have found the WorkSite DB Administrators COM Developers Reference Guide, it has helped me somewhat and I can now see the types of objects that I can interface with, however I am stumbling on showing the members of a group. [Code] Can anyone offer any assistance on this problem? I have read on page 21 of the DB Admin COM guide that it mentions to execute iManAdmin - REGSERVER from the command prompt, however this will not work for me with Windows reporting that the file doesn't have a open with program set. I am running Windows 7 64bit.
View 1 RepliesI have a DLL that utilizes the Redemption Outlook Library. This is included in the DLL's Reference on the Project Properties Tab. This is a DLL that I wrote and one of its newest features is its ability to send an email.This DLL is called by a Click-Once program that has a GUI. When the program called the DLL and at the point of sending the email....I receive the "Cannot create ActiveX Component" error. So, in the Click-Once application, I also referenced the Redemption Outlook Library thinking that would fix the problem but it didn't. The Click-Once app resides on a server with other Click-Once apps. In it's irectory structure the DLL is also present and now....so is the Redemption Outlook Library DLL. I'm all out of ideas. Here is the code that sends the emails below.
Private Sub SendEmailToUser()
Try
Dim Application = CreateObject("Outlook.Application")
[code].....
I have to create a textbox and a label component. The textbox object will have to behave under the following conditions: 1. It will only accept letters and the ENTER key as input.
2. As an extension of condition #1, a message will appear whenever an invalid key is pressed
[Code]...
I have a vbscript that tries to create an object of msmq but I am keep getting an error that ActiveX componet cant create object. I have msmq installed and queues are there but cant create an object.
View 2 RepliesI am running Visual Studio 2008 on Vista Premium sp1, and when i'm trying to add to a form :COM Component "Microsoft Spreadsheet .." then i get this error:
< Failed to create component 'AxHost'. The error message follows:
'System.AccessViolationException: Attempted to read or write protected memory. this is often an indication that other memory is corrupt.
at System.Windows.forms.design.documentdesigner.axtoolboxitem.createcomponentscore(idesignerhost host)
at system.drawing.design.toolboxitem.createcomponentscore(idesignerhost host, idictionary default values)
at system.windows.forms.design.oledragdrophandler.createtool(toolboxitem tool, control parent, int32 x, int32 y, int32 width, int32 height,
boolean haslocation, boolean hassize, toolboxsnapdragdropeventargs e)' >
I'm my program always fails at the same line:
objUser = GetObject("LDAP://CN=" & strUser & "," & ADPath)
If I reduce the code down to just this:
objUser = GetObject(), I still get this exception:
"Cannot create ActiveX component."
After googling this for about 18 hours, I found that it could be because of a permissions issue. I am a local administrator on the PC, so I believe that takes care of permissions. Secondly, I discovered that the dll file might not be registered. I tried to use the following command to register the dll file I think is being used:
regsvr32 "c:windowssystem32wldap32.dll"
It says the following:
Error - The module "C:windowssystem32wldap32.dll" was loaded but the entry-point DllUnregisterServer was not found. Make sure that "c:windowssystem32wldap32.dll" is a valid DLL or OCX file and then try again.So no matter what I try to do, I keep getting this unhandled exception error that says that it cannot create the activex component. What do I need to do to be able to use this getObject() command? Is the problem with LDAP? What activeX or DLL file is failing if even just running the getObject command gives an exception?
