I want to develop a plug-in API for one of my VB.net applications.
Does anyone knows a easy an detailed tutorial for solving my problem or coluld someone explain how to write an application plug-in Interface
Writing a plug-inable application in .net 2
Visual Basic General
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- program reinstalls automatically upon execution oreXero, There is a function that will implement every time when you install the application, it causes the re-installation every time, too. So I recommend you to put this function in a single file. When the application installs successfully, the function which can copy the certain files will be useless. Certainly the easiest way is to delete the file that includes this function. Tag: Writing a plug-inable application in .net 2
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- Raising a TextBox Event under System.Web.UI.Page OK, I need to show the user how many characters he typed so far in a TextBox under System.Web.UI.Page Any help would be appreciated. Cheers Tag: Writing a plug-inable application in .net 2
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- converting to binary hey pals. i have question about converting string in hexadecimal into binary . since there wont be any problem in coverting string in hexadecimal form to decimal value is possible. so how am i able to convert that into binary (hexadecimal in string form) appricating to any helps given. thanks. Tag: Writing a plug-inable application in .net 2
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- What do the brackets around these parameters mean? I'm working on a project and used a snippet created by a fellow programmer that I don't quite understand, and would like to find some documentation concerning it. The line of code I am having the problem is this sub declaration: Private Sub MyReceiveCompleted( ByVal [source] As [Object], ByVal asyncResult As _ ReceiveCompletedEventArgs) What is the signifance of the brackets around the var name 'source' and its var type 'object' Thanks in advance. Tag: Writing a plug-inable application in .net 2
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- Com Object Failing on server.createobject Regasm should have taken care of the registration. But it doesn't hurt to double-check. Start + Run, Regedit. Navigate to HKCR\TestCom2.MyComClass. Take note of the CLSID key value. Navigate to HKCR\CLSID\{ value } and check if it looks good. Tag: Writing a plug-inable application in .net 2
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- MouseWheel event not occuring on Panel or Label the bottom line is the event is never going to occur. If you look at my sample code from my previous post, you will see that when the FORMS mousewheel event occurs, that is when I have the code to see if the mouse is currently over the panel or not. The mousewheel event is only going to fire on controls that can receive focus. The label can't receive focus, so its not going to fire that event. Tag: Writing a plug-inable application in .net 2
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- how: capture colour at cursor point? how do i capture a colour from the cursor point i.e. when i click a colour from say, a palette, i want to capture that colour. Tag: Writing a plug-inable application in .net 2
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- Printing a File As it is unlikely you would manually handle the printing of a pdf then I would suggest that you are doing the right thing (albeit you may find third party controls that can print these things from within your app and you are relying on an application that can handle the print being installed) Richard Tag: Writing a plug-inable application in .net 2
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- Save image from PicutreBox to database .9 -June- 2007 . . I am using VB.NET2003 with MS Access 2003 Database. OLEDB connection provider............... So, how i can save image displaying in Picturebox field to MS Access databse and , How i can load image from Access database to Picturebox field Tag: Writing a plug-inable application in .net 2
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- textbox in date format in a form.... If you've built the application (or ran it), then there should be a section called "WindowsApplication1 Components" in the toolbox (or named after your project anyway). I'm using VS2005 - I don't know if all versions do this, but I would assume they do. Tag: Writing a plug-inable application in .net 2
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- What is the correct way to assign a default value to a cell in a datgridview upon addition? When the grid gets a new row, the values will be there. If the user moves off of the row without altering data, the values will be discarded. The values that are placed there can be edited like any other cell, but just provide a "default" value as a starting point for new row edits. If you want the values to be there as you save a new row if the user didn't type something, you'll have to do something else. Tag: Writing a plug-inable application in .net 2
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- prevent null exception from occurring Hi, If objUserInfo.Properties.Item( "mail" ).Value = Nothing And _ objUserInfo.Properties.Item( "sn" ).Value = Nothing And _ objUserInfo.Properties.Item( "givenName" ).Value = Nothing Then s = s & " , , " Else s = s & "," & objUserInfo.Properties.Item( "givenName" ).Value & " " & _ objUserInfo.Properties.Item( "sn" ).Value & "," & _ objUserInfo.Properties.Item( "mail" ).Value EndIf The above would sort it out. :-) Regards, S_DS Tag: Writing a plug-inable application in .net 2
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- VS2005 without .NET Framework Scott Wisniewski - MSFT wrote: Yes. You can develop C++ applications in VS 2005 that do not depend on the .NET Framework. VB apps, however, requires the .NET Framework. Hi, I guess that's us all told.... Can you give a very short example please Regards, S_DS Tag: Writing a plug-inable application in .net 2
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- not able to open vb6 app after installing sp2 VB6 application was working fine untill i install xp servicepack 2. after installing sp2 , when i try to open , no response... i used firewall exceptions ...still no luck .. Vb6 application contains com component developed in vb6 Could any one tell me how to solve this issue ... thanks aravind Tag: Writing a plug-inable application in .net 2
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- Need Help with a System.Windows.Forms.BindingNavigator Actually you do not need to change your textboxes to labels. You can use TextBox.ReadOnly Property. If true then it does not allow user to change the text, else, user can change the text Here it is If mRowState = DataRowState.Added Then ' this is new row Me. Textbox1.ReadOnly = False Else If mRowState = DataRowState.Unchanged Then ' this already exist Me. Textbox1.ReadOnly = True End If Have Funn!! Tag: Writing a plug-inable application in .net 2
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- Polymorphism? How can you avoid "switch" statements? How you doin, Gave it a bit more thought and another way you could get this working without a case statement and for all controls although it does only work if your planning to run the same drawing code for all controls is this. Create a method that accepts a delegate that creates a graphics object. People that use the code could pass the function that creates the graphics object for the control you want to draw on. In your method you call the delegate get the returned graphics object and draws with it. Maybe thats too much, I'm not sure but it will certainly be future proof. Like this... Code Snippet Public Delegate Function GetGraphics() As System.Drawing.Graphics Public Class DrawingClass Public Sub DrawOnControl( ByVal method As GetGraphics) Dim g As Graphics = method.Invoke() End Sub End Class If you didn't want to go this way you could also create an Interface that describes the information your method needs to work. Developers would implement this interface in their classes, fill in the required data, and pass it to your method. Your method then knows what methods and information is the object being passed. Tag: Writing a plug-inable application in .net 2
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- Now() returns value that is not the same in VB.Net as it was in VB6? Wanted to put this out to save someone else from the time I spent figuring this out: This happened in VB.Net under VS2005, using DAO3.6 and Access2003. The upgraded application was originally VB6, DAO3.51 and Access97. In VB6 had a module level var named mLastUpdate As Date. Var was set to "Now" (current system date and time) when Name property was set. Public Property Name() As String Get Name = mName End Get Set(ByVal Value As String) mName = Value mLastUpdate = Now mDirtyData = True End Set End Property Data was saved to a recordset with the name and lastupdate fields set: myRS.Fields("Name").Value = mName myRS.Fields("LastUpdate").Value = mLastUpdate myRS.Update() Then retrieved the row just inserted in order to get the Autogenerated ID number from the database table. myRS = myDB.OpenRecordset("SELECT ID FROM Company WHERE LastUpdate=#" & mLastUpdate & "#;", dao.RecordsetTypeEnum.dbOpenSnapshot) Code worked fine in VB6 - last added/updated row was returned; however, in .Net the row was not returned. When running the SQL inside Access using the date/time from the table it still would not return the row. Tried formatting mLastUpdate as it was being assigned to the recordset value, but still no luck. Within the property SET, I then tried formatting: mLastUpdate = FormatDateTime(Now, vbGeneralDate). Now it works perfectly like it did before. I could have used @@Identity (which also works) but wanted to keep the code as close to the original as possible to avoid introducing more problems. I'm not sure if the change that effects "Now()" is happening under Access or .Net, but wanted to make people aware that it is evidentally out there. Tag: Writing a plug-inable application in .net 2
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- Storing values from a file permanently so that the file is not necessary once compiled I realize now that I explained it wrong. My array will actually be two dimensions Array(a,b). I want to read each row of data from the file and if column c is 0 for a particular row then the corresponding array value will be 0, but if column c is 1 then the array value will be 1. For example, the first six values in my array using my values above would be: array(0,0) = 0 array(0,1) = 0 array(0,2) = 0 array(0,3) = 0 array(0,4) = 0 array(0,5) = 1 I also provided a shortened format of my file. The actual dimensions of the array would be array(0 to 29, 0 to 24), so there are a lot of possible combinations. I know how to read from the file and assign to an array as described above. My question is actually what the second replier is getting at. The values will not change so I want them to be included in the executable without having to send an extra file to each user. Thanks for the suggestions Tag: Writing a plug-inable application in .net 2
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- how to execute form ? Can you direct me to the startup option in my application please All I can find is the startup project options, which only offers me one choice and that is the application name rather than a list of forms that i can choose to test them. Many thanks for getting back to me. I didnt get a notification so sorry for the late reply. I like the sound of the switchboard option and this is something I wish to use just hope it not too difficult to build it very easy in access this is my first attempt @ C#. Tag: Writing a plug-inable application in .net 2
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- How do I set delay between code? I use a loop with a application.doevents in it, pauses the code but leaves the gui active. I do it in milliseconds generally... 1000 milliseconds = 1 second. Dim Timer As DateTime = Now.AddMilliseconds(2000) do application.doevents() until now > timer Tag: Writing a plug-inable application in .net 2
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- XP/Vista ADOX References I built a large application on XP and a tiny but needed component uses ADOX for table creation and persistance in an Access database. I couldn't build the project on Vista until I deleted the ADOX reference and replaced it because msadox.dll has moved from Windows/System32 to Program Files\Common Files\System\ado. If I wanted to support a single build on both operating systems am I going to have to resort to late binding That's not an easy dll to late bind to. Tag: Writing a plug-inable application in .net 2
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- Unexpected results from PrintDocument1 PrintPage event John & TallDude, Thank you. I see that I have to control things much more explicitly than I'm used to. I'd've been perfectly happy with C:copy filename.txt lpt1:.... Fred :-{)}---// Tag: Writing a plug-inable application in .net 2
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- Array Help I like the idea of ArrayList (Mainly because im a java programmer) However when I use your code I get: Compliation Error: User defined type not define Do i need to import anything If so whats the syntax Im a real novice VB programmer Tag: Writing a plug-inable application in .net 2
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- Trapping Mouse Clicks I asked "why"! Guess that's an answer. Sorry, I dont' know how to subscribe to the event either. Just FYI, I also have a custom hardware device based on XP Embed that runs a custom app and uses a touchscreen. I allow use of the windows OSK and prevent running other applications using Group Policy. I haven't had complaints of mispressed keys, but screen resolution and touch screen sensitivity may account for that. Since your problem isn't really VB related, you may need to try asking in a Windows API specific forum... Oh, unless the other app that processes your login is also a .NET application - if it is, you may be able to use Reflection to communicate with it instead of the API... Tag: Writing a plug-inable application in .net 2
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- Delete row from datagridview view There is an event that fires called UserDeletingRow. Not sure if that would fire before or after your error though. But you might take a look at that one. Tag: Writing a plug-inable application in .net 2
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- How to set the WMI Privilege on VB 2005? Once I enable the privilege for WMI on VB 2005. Dim options As ConnectionOptions options = New ConnectionOptions() options.EnablePrivileges = True What CODE AND Where I put the code to specify the privile like SHUTDOWN, REMOTE SHUTDOWN, BACKUP, RESTORE, AUDIT, SECURITY, CREATETOKEN....ETC ....ETC... Guys any help is super appreciated. Thanks, PRJUANL. Tag: Writing a plug-inable application in .net 2
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- Run-time error 339: Component 'MSCOMM32.OCX' or one of its dependencies not correctly registerd: a file is missing or invalid. Hi, Which version of Windows XP + service pack1 or service pack 2 or other mswinsck.ocx and mscomm32.ocx , are not in Windows Vista see.>> http://msdn2.microsoft.com/en-us/vbrun/ms788708.aspx Put an email address in your profile then and I will try to help you. Regards, S_DS Tag: Writing a plug-inable application in .net 2
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- Splitting Images I have a Windows VB application that views and copies TIF images, some single pages some multiply pages. What I need to do is to for each page in the tif is to break to image file into separte pages, How can I do that Tag: Writing a plug-inable application in .net 2
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- TXT File to MS Access I like your approach to this problem, but keep in mind that everything before the "=" sign is a header and everything after is the value for each line. Unfortunately, the txt file is not created in a table like format. In other words, for every line you have the header and the value. I guess this is the most difficult part for me to figure out. Any ideas Thanks, ElDorado.- Tag: Writing a plug-inable application in .net 2
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- Can I Create an enum on Runtime, or change Enum values or member Names ? hi Zadeh Enum are tools for design time to let the programmer have a engilsh word that repersents a value.... At runtime the code doesn't care what the engish word is it just wants the value. So a collection would be a better opption at run time... Collections come in all different types so its easy to find one that fits your dataset.... Tag: Writing a plug-inable application in .net 2
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- Creating a view meter. Well, vb6 had the vertical progress bar. I'm not sure if you converted it to a .net it would remain that way. In either case, a really quick way of setting up a vu meter was to make a vertical progress bar, with values min-0 max-100, and set the .value property to the vu 'level'. Tag: Writing a plug-inable application in .net 2
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- Where is the Fill() method? I am still having problems with the above NewRow, DataTable method to population an Access Database, as my original question, which I would like to crack. Anyone who could help to solve this problem would be very much appreciated. However, the below code, which may be of interest, does work, although somewhat convoluted. hemo Public Sub InsertRow() бо Assumes valid connection connection.Open() Try Dim cmd As New OleDbCommand( "Insert Into Test " & _ "(Name1,Name2,Name3)Values( , , )" , connection) cmd.ExecuteNonQuery() Catch ex As Exception MsgBox(ex.Message) End Try connection.Close() End Sub Tag: Writing a plug-inable application in .net 2
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Re: Writing a plug-inable application in .net 2
weirdbeardmt
I don't think you need to do anything particularly difficult. Just add a project to your solution which exposes some public classes with the required function calls...
I don't think you need to do anything particularly difficult. Just add a project to your solution which exposes some public classes with the required function calls...
Re: Writing a plug-inable application in .net 2
S_A_S
The solution could not be publich code, because I need to load the Plug-ins dynamically at runtime - so I can not know bevore what I really load.
The solution could not be publich code, because I need to load the Plug-ins dynamically at runtime - so I can not know bevore what I really load.
Re: Writing a plug-inable application in .net 2
weirdbeardmt
Considering you're being extremely vague about you want to do, then I suggest you have a look at VSTA. It's about as close as I can guess about what you want to do.
Considering you're being extremely vague about you want to do, then I suggest you have a look at VSTA. It's about as close as I can guess about what you want to do.
Re: Writing a plug-inable application in .net 2
weirdbeardmt
Visual Studio Tools for Applications.
S_A_S wrote:
What does "VSTA" exactly mean
Visual Studio Tools for Applications.
Re: Writing a plug-inable application in .net 2
S_A_S
I don't think that VSTA would help me. I want to create a plug-in solution for one of my own applications.
I don't think that VSTA would help me. I want to create a plug-in solution for one of my own applications.
Re: Writing a plug-inable application in .net 2
Bruno Yu - MSFT
S_A_S,
I hope the following article can help you with developing a Plugin API in .NET Application. The sample code in written in C#, however, I hope you are able to get the answer from the article:
Let Users Add Functionality to Your .NET Applications with Macros and Plug-Ins
http://msdn.microsoft.com/msdnmag/issues/03/10/Plug-Ins/
Most user applications benefit from the ability to be extended by other developers. It's often easier and more efficient to extend an existing application that users are already familiar with and trained on than it is to develop one from scratch. Thus, extensibility makes your application more attractive. You can build extensibility into your application by supporting features like plug-ins or macros. This is easily accomplished using the .NET Framework even if the core application isn't a .NET Framework app. In this article, the author describes extensibility features of the .NET Framework including late binding and reflection and how to use them, along with plug-in security considerations.