i want to add a custom file type to my application For Example
somefile.dlh
the file type is a .DLH file how would i add this to my application so that it can read it ... like it would say a text file or something?
I recently downloaded VB 2010 Express so i am quite new to the language, but i have worked with dark basic, which seems to b very similar.Anyway, my problem is that i cannot seem to correctly set out my array of a custom type/class. i am trying to create two arrays, one of available entities and another of selected entities of which the user selects the entities to be dealt with in irrelevant ways. i have creates a button (called test) which adds some entities to the available list and all the entities come back the same value but they shouldnt be as you'll c in the code. i have run the step into command a found that "available.item(#).Name = " will change all of the entity's names.As of current i am working with lists as the array kept asking for a 'new' statement but i couldnt figure out where to put it.[code]
View 7 RepliesI have been trying to solve a problem related to using RolesProviders in MVC.Basically I would like to an additional set of criteria to the roles table so that a user can switch roles based on what they are doing on the site.However as simple as it may sound its proving to be a nightmare. I cannot for love nor money come up with a solution. I have tried overloading the provider, creating extension methods (which never work with the Roles class) but finally I decided to simply create a reference to my own custom provider and just completely bypass the whole User, Roles class.Now I am getting a ridiculous error which states that I cannot cast MyProvider class to an instance of MyProvider class? All I am doing is calling the Roles.Provider method and casting its return value to my custom provider class (which inherits from RolesProvider). The asp.net forums are a waste of time since no one ever answers the questions and there are simply no examples of extending the Roles/Membership model without using SQL server.
View 3 Repliesi want to make a custom file type like "abc.xyz" which should have all the attribs of a directory like
moving other files and folders to it, open, close, delete, create new, etc... in vb.net or c#.net
I know how to add a resource to my project and I also know how to add an icon to my application. What I could not figure out is how to embed another icon for custom file types - I do know what registry entries to add / modify though, I am just not able to add a 2nd icon as resource to my profile and make it 'accessible', so, that the Windows System can display it for files with my custom extension.
View 15 RepliesWith VB.net, I'm coding a simple application to get more used to the new .Net format.
I'd like to save all the information to a 'new' database file. how to create a database on the fly, once that is done i'll be able to connect to it no problem, but actually creating the file is proving difficult to work/find out.
Also, with vb.net and the newly created custom file, how can it be made to automatically open that information with the program?
Is there a method in installation to associate the file type with the new program? How can i check when the program loads if a database file has been 'double-clicked' (rather than just running from the .exe of the program) and proceed to load the data?
EDIT1 - Extra InfoThe windows application has many different fields and content etc, then i need to save that to a file that could later be loaded by 'double clicking'. I assumed the easiest way would be to create a mini-database for each unique file
i am using VB 2008 and i was wondering if it was possible to have my program create and read a custom file type?
View 3 Repliesi have 8 new custom file types which go with my app, i can set them to open with me app easily using this code on a button:[code]But im a little stuck on what to change in that, ive made certain all my new extensions are unique and i have all my icons for each new file type made, i just need to be able to set them.
View 5 RepliesI developed a custom help system for my ACCESS 2007 application using Help Workshop. I wish to open this .chm file by a command button on a form but does anyone know how to do that?
View 9 RepliesI have formatted my PC recently and I installed VB.NET 2008 on it. When I open a project, and when I want to view the form designer; the message shown down pops-up. Iv'e re-installed VB.NET but the problem seems to be persist. This is the first time I ever get this error message. Is there any solution for such problem?
View 2 RepliesI have made an application and It opens rtf files but I would like it to become the default application for opening this file format.
View 1 RepliesI installed VS 2005 Beta 2 on a WinXP pro system (numerous times). It finally installed without erreors. It looks like it is basically working - I can create a new windows project and add items from the toolbox, edit the code etc. If I open an existing project (created on another box) things load properly but I cannot open any forms in designer view (I can open them in code view). When I attempt to open a form in design view I get the following error popup:=====================There is no editor available for 'c:....myForm.vb'.Make sure the application for the file type (.vb) is installed.
View 12 RepliesI am running VS 2010 Professional and have a solution with 3 VB projects in it. I can open the forms in 2 of the projects just fine but if I try to open any of the forms in the 3rd project I get a message saying "There is no editor available for .....Form1.vb. Make sure the application for file type (.vb) is installed". Everything was working fine last month and I could open any of the forms.
Again the problem is limited to just the 1 project in the solution.
My Visual Studio 2008 seems to be corrupted. I can not use the Windows Forms designer. I get an error about: "Make sure the application for the file type (.vb) is installed." Also, under menu item Tools>Options, it says "an error occurred loading this property page" when I try to look at the options for 'Data UI Customization' under 'Windows Forms Designer'
[Code]....
I'm using VB.NET in Visual Studio 2008 in a Vista 64-bit OS. I'm trying to find an easy way (there must be one) to quickly retrieve from the registry the application file name and path to use in a Shell command to open a particular file. Specifically, I want the user in my app to be able to click on a PDF file and have the app open that PDF file using the application associated with PDF file types - Acrobat Reader, for example. Anyone have any suggestions as to proper coding & syntax for the following sequence?:
(1) Get name of .exe file associated with .pdf file type (most likely from the HKey Root Classes hive)
(2) Get path for the .exe file
(3) Shell("[pathname]appname.exe filename.pdf")
I've spent a couple of hours looking through the forums and haven't found what I'm looking for.
how I can go about having a ini type file so my.settings don't get over written when I load newer versions of my application?
View 3 RepliesThis is probably a pretty novice design question. I'm trying to work my way through a number of requirements and give the users the experience they're looking for.I've written a tool that does big calcluation-type things. It currently consists of a class library and command line tool (separate .NET projects.) We're using an Access database format as the file type because it can keep all the various tables together in one file. A few other items about the application: There are not many users. There are no concerns with scalability. There are not great concerns with updates. Desktop is desired. Not web.Using VB and .NET 3.5 SP1
I now need to develop a GUI front end that will allow typical File/Open and File/Save type operations.Users expect that they can open a file, edit it some, then either choose to save it or close it unsaved without any changes being written back to the file. Saving it would obviously save all changes affecting all tables back to the file.
Does it then make sense to use a temp file for something like a proxy then? To, when a user "opens" a file, copy the source Access file to a local temp file and then use that for the editing session? Then, if the user "saves", copy the local temp file back to the source path?
Update: [tagged with ms-access tag too] Also, I omitted the fact that users would expect typical File / Save As functionality too. I think the design I've put in question in this post is what is traditionally called the Proxy design pattern. Has anyone tried this (successfully!) with Access database files before? Words of caution or advice?
I'm having a problem with converting from one source type to a destination type. I have a form with 2 buttons (button 2 uses the OpenFileDialog to have the user open an excel file set to NewFile),(button 1 takes the contents from specific cells in NewFile and arranges them how I need into oXLApp1).
The error I get is "Unable to cast object of type 'System.IO.FileStream' to type 'Excel.Application'." in line 14 of the code below.
Public Class Form1
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
[Code]....
know how to create a custom file association ( a custom extension ) in VB .Net and how to open it on the application
View 1 Repliesit works perfectly.
Dim XmlFile As FileStream = New FileStream(path, FileMode.Open)
Dim Serializer As XmlSerializer = New XmlSerializer(GetType(gpxType)) ''here I get error
Dim GPX As gpxType = New gpxType
[code]....
I get InvalidOperationException was unhandled. Whats wrong?
I am building my own Message Box, I have overloaded the ShowDialog function and i wish to Change the Return Type from DialogResult to my own.
View 3 RepliesIs there way to set custom metadata to files of any type? I want the metadata to be copied when the file is renamed, moved or copied. I don't want to use ADS.
View 1 RepliesIf you have custom type, and you wish to assign a List(of T) to that custom type[code]...
View 1 RepliesI'm building a vb.net application that composes messages for later message queueing in accordance with a predefined schema that an observer of the message queue requires.I've made the XSD file for the schema already, but I was wondering if there was any way to import the schema as or convert it to a custom object type in my .net application, where the elements of the schema would represent data fields or sub-objects to be filled programmatically.
Is there any way to do this?Am I getting my terminology correct here, or would there be a better way to accomplish what I'm attempting to do?I'd like to be able to create a schema and use it as a definition for some kind of data transfer object in my applications, without having to make the object as a separate VB class file.
I'd like to auto-register the common/simple services in my unity container. I think the cleanest way to do this would be via a custom atribute.I can then examine all the (abstract) classes in an assembly and register those types with unity.The piece of information I'm missing is the interface(s) that the class wants to be registered against
eg:
Public Class AutoRegisterAttribute
Public Property ForInterface As System.Type
Public Sub New(ForInterface As System.Type)
[code]....
Note, I don't just want to find any class it implements as shown with IDisposableI've tried doing this using generics (generics can't inherit from Attribute), with a Type Parameter (Passing in IEngine.GetType results in a "Constant expression is required")
I have been developing in VB.net for a cople of years now. I really miss the increment and decrement operators for integers that I grew attached to while using Java and C#. I have seen posts explaining how to implement a custom operator for a class that I have written, but I have not seen any examples of how to do it for a basic type like Integer.[code]....
View 1 RepliesI'm creating something that has save files. For the most part, it's just saving objects with 4 values.[code]...
View 3 RepliesI am building my own Message Box, I have overloaded the ShowDialog function and i wish to Change the Return Type from DialogResult to my own.To do so , shall i declare an Public Enum within the form and set it as the Return Type, or is there any other proper way?
View 2 RepliesI am trying to implement a Custom HttpHandler (for the first time), I have been given a tutorial to follow but couldn't get it to work. I then found another tutorial but couldn't get that to work, they are both giving me the same error message.
The custom handler is to protect people from downloading certain file types, although i think the error is somekind of configuration problem as I can't get the website to work at all once I add the httpHandlers to the Web.Config file.
Description: An error occurred during the processing of a configuration file required to service this request. review the specific error details below and modify your configuration file appropriately.
Parser Error Message: Could not load type 'FileProtectionHandler'.
Source Error:
Line 47: </compilation>
Line 48: <httpHandlers>
[Code].....
I have a datagridview that is bound to a list object of a custom type via a BindingSource. From everything I've read, I should be able to click the column headers and the rows sort, This doesn't happen for me. Sortmode is set to automatic and the column headers aren't set to be used for selection so it should work.
I know that I could sort progamatticly but that seems a little bit of a waste given that I should just be able to do it by default.