How do we automate the process of deriving an Interface from our already-designed class?In other words, I wrote in completion my entire class and now desire to automatically construct its interface. EG: Say my class's filename is "Car.vb", I now desire "ICar.vb" derived from the class "Car" that I've written.
View 9 RepliesI created a simple VB 6 executable that runs fine on my computer (Windows 7), but when I deploy it to another Windows 7 PC or a Windows 2003 server, I get the error"Runtime Error 430: Class does not support Automation or does not support expected interface"
View 12 RepliesI am trying to just write something to a cell in a sheet and I am getting the error message:
Exception Exception from HRESULT: 0x800A03EC Stack Trace: at System.RuntimeType.ForwardCallToInvokeMember(String memberName, BindingFlags flags, Object target, Int32[] aWrapperTypes, MessageData& msgData)
[code].....
How do I use Excel Automation in VB.NET? Please remember to mark the replies as answers if they help and unmark them if they provide no help. Welcome to the All-In-One Code Framework!
View 1 RepliesThe software company I work for offers data conversion as a service for new clients who have previously used other similar software. I've written a VB.NET application to automate common conversion operations, and have separate logic between known vendors.particular file layout has become rather common, but due to the nature of how this particular competitor's application stores information, certain fields mean one thing for one client, and another for a different client.Certain elements within this vendor's format change every time, so I've written the application to account for that. Because some data fields mean different things to different vendors, I have to change my mapping code every time. This wasn't an issue when I had one of these every six months or so, but these are becoming much more common and I would much rather find a way to further automate this process.
View 2 RepliesIs it possible to read an excel range when option strict is on?my test code works with Option Strict Off but 'Disallows implicit conversions from Object to 2 dimensional array of object' when Option strict is on!Is it possible to load a typed array from the object without looping round all of the elements? [code]
View 4 RepliesI am trying to automate this website but my application does not find the username, password textboxes or the button. this might be an iframe in the website, I don't know
what I am trying to do is:
find the username
pop it in
[code].....
the create object command is not responondingi try createobject("Excel.Application") or ("Word.Application") but nothing happen.i have office 2007 i have added the references Microsoft Excel 12.0 object library and Microsoft Word 12.0 object library. I have added Imports Microsoft.Office.Intercop
View 1 RepliesI'm writing VB code in Visual Basic 2008 Express and can't seem to figure out how to create a new instance of Excel with VB code. The most common answer appears to be setting an object variable to 'Excel.Application', but that gives an error (Type 'Excel.Application' is not defined).
View 1 RepliesThis seems like is should be simple but for the life of me I can't seem to get it. I am using VB.net.I am importing a text file into Excel. Then I want to select everything and sort it based on a cell (A) in this case. So here is what I have so far.
Code:
xlApp.Workbooks.OpenText(sDump, , 1, , XlTextQualifier.xlTextQualifierDoubleQuote, , , , True)
[code].....
I have a VB 2008 Forms application which does Powerpoint automation -- I am opening owerpoint in a minimized window from within my app and am trying to periodically put update messages in a textbox on my main form while the automation is running (it takes a few minutes to complete), but my form window does not want to show these messages until the powerpoint operations are finished. It seems as if I need to force a window refresh or something on my windows form, but I'm unclear how to do that. Below is some code that I'm using that illustrates what I'm trying to do. When I run it, "Step One / Step Two / Step Three" do not show up on my textbox until after the Powerpoint automations are over.
View 3 RepliesI play Lord of the Rings Online and tried to use sendkeys to send some basic automation commands.Unfortunately it doesn't seem to get the keys I'm sending
AppActivate "Lord of the Rings: The Mines of Moria"
sendKeys (" ")
does nothing.
[code].....
I have an application that opens and saves spreadsheet via interop.At start up I set
Code:
_excelApp.Visible = false;
_excelApp.DisplayAlerts = false;
[code].....
I want to use VB .Net to remove a table from an EXISTINGpowerpoint Slide Shape and replace it with a chart withoutdeleting the shape or adding a new shape. Presently using
Copy() and Paste() to place Chart in new Shape.
I dont know why its giving me an error when i run this code...
Code:
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
[code]......
I am having tremendous difficulty getting word automation to insert a page break in my document. The app is generating letters in word and saving them....the code below shows where I am writing the first page (str.tostring) then all of the code after that are the various ways that I have tried to insert a page break so that it will go to the second page and I can unload information into the second page of the document. [code]
View 1 RepliesIn VS2008, I can stub out interface members with the following code using TextSelection to insert the implement line and then "simulate" the Enter key by inserting a new line. However, it doesn't work anymore in VS2010.
CodeClass cclass = {Target_Class};
TextSelection txtSel = {After_Class_Declaration_Line};
foreach (string i in interfacesFullName)
[Code]....
I have an interface class (IUser) which is the interface of class User. Now, i want to put these into an IList but am confused as to how i should declare the IList:Dim userList As IList(Of IUser) = New List(Of IUser) Dim userList As IList(Of User) = New List(Of User) Dim userList As IList(Of IUser) = New List(Of User) Dim userList As IList(Of User) = New List(Of IUser) when instantiating should you always use its implementation; and when using it as a type use its interface?
And when im creating a new user should i use: Dim myUser as IUser = new User?
I'm trying to make a .dll that contains a lot of basic functionality that a program can use. Currently i am trying to use interfaces to make a lot of this functionallity independend of the program using it but i hit a snag. The Basic idea is that a programmer will create his own object using the interface discribed in my .DLL file. Then implements those functions as he likes. He can then instanciate a controller (found in the same DLL) and sends his custom object implementing the interface to that Controller. The controller can then be started and will take over all the work. I do not know what type of object is send to the controller and idealy i want to program it in such a fashion that i shouldn't care as long as the object send implements that interface.In code I am trying to achieve the following: (quite simplyfied)
.Dll:
Code:
Public Interface MyInterface '<----Decleration of the interfaceFunction GetData() As Integer
Function SetData(Data As Integer)
end interface
[code]....
this propperly. I know that the second i set the interface adaptor in the Controller VS comes nagging that it can not be converted to a "MyInterface" Class. Obviously i am doing something wrong. I can change the datatype that the controller expects to the "MyController" type but that would completely ruin the whole idea of flexibillity. I am hoping someone sees what i am trying to do and can point out where i made the thinking error.
I need to create unit testing project for my current website. The currentw ebsite si written in VB. All unit testing examples are using interface to create mock object. My current VB class does not implment any interface. Can I add interface and implement it to my current class and functions without affecting or changing codes to any pages in my website that call the functions? For examples my current class is like:
[Code]...
I'm making a custom class that mocks the System.Drawing.Rectangle class because the Rectangle class doesn't have a name property. I need a name property because I am adding all of my rectangles to a collection and I need a little more info stored than just their locale and size. So I changed the _onPaint event but nothing is working out when I run the program?
Public Class Rectanglar : Inherits UserControl
Public BackgroundColor As Color = Color.Blue
Public Sub New(ByVal name As String, ByVal XY As Point, ByVal Widthy As Integer, ByVal Heighty As Integer)
[code].....
I am trying to create a class in VB.NET which inherits a base abstract class and also implements an interface. The interface declares a string property called Description. The base class contains a string property called Description. The main class inherits the base class and implements the interface. The existence of the Description property in the base class fulfills the interface requirements. This works fine in C# but causes issues in VB.NET.
[Code]...
Suppose I have piece of code like this:
Public Interface ISomething
....
End Interface
[code]....
I can do this without problem.
Class A
End Class
Class B : Inherit A
End Class
Dim Obj1 As A = New B
class inherit from another class and implement an interface?
View 4 RepliesI know that an interface can contain another interface within it.But;can a class contain another class within it?Can an interface contain another interface within it?
View 9 RepliesI have a project running in my old computer. It has panels,textboxes,labels etc. It occupies the full screen when running.I bought a new computer with a widescreen format. When I run this project it only occupies 2/3 of the screen.
What properties of the controls must I use so that I can run this program in any size computer and still occupy the full screen i.e the size is proportionately resized depending on screen size.
I frequently use TextBoxes that expect date values. I do a tedious job every time to handle the Validating event. The Validation event ensures that the value is a valid date value according to the current thread's Calendar, and if so, formats the date to "dd-MM-yyyy".
I want a TextBox (e.g. DateTextBox) that automatically runs validation and formats its Text property. All I have to do is dropping it to the form.
I know I should use inheritance; but I do not know where to put the auto-validation code; and I do not know how to save the inherited class as a control in the ToolBox.
I have a class which has a variety of details, as follows:
Vehicle Name
Vehicle Address
VEHICLE Percentage: 10
I need to somehow use an Interface for another version, SpecialVehicle.
Special Vehicle has a different Percentage, for example 15.
How can I integrate that in an interface? I just don't understand them?
I am working on a plugin architecture and after some reading I have settled on one. The host class will be implemented in C# as well as some of the plugins for that host. The issue I am having is that some of my team uses VB.net. So the question, is it possible to implement a C# (plugin)interface in VB, such that when it is dynamically loaded into the host program it will have the methods required by the interface.
View 1 Replies