We have a form that hosts the WebBrowser control. That is the only control on the form.We pass the form the file path of a temporary PDF file and it does:WebBrowser1.Navigate(Me._PathToPdf)When the form is closing, it navigates away from the PDF file:
WebBrowser1.Hide()
WebBrowser1.Navigate("about:blank")
Do Until WebBrowser1.ReadyState = WebBrowserReadyState.Complete
[code].....
I've built a simple library to import data from XLS/XLSX files. The code runs perfectly in my WinForms app but occasionally throws exceptions when I run it from ASP.Net. The "occasional" part seems to based on file size. My test file is about 16,000 rows and 18 columns totaling about 4MB as an XLSX file. If I drop rows (down to about 12,000) it works or if I drop columns (down to about 12) it works or certain combinations of these (14,000x14, etc) it works. This leads me to believe that I'm possibly running into a memory constraint somewhere. Below is the distilled code that's not working:
Dim dsn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=""c: est.xlsx"";Extended Properties=Excel 12.0"
Using Con As New System.Data.OleDb.OleDbConnection(dsn)
Con.Open()'Exception thrown here
Con.Close()
End Using
The exception that I'm getting is:External table is not in the expected format Searches for this all talk about getting the DSN correct and since it works on the desktop I know I've got that right.My test machine is a Windows 7 64-bit with the Microsoft Access Database Engine 2010 Redistributable - 32 bit installed. (My machine has Office 2010 32 bit installed which is why I have the 32-bit ADE installed, it won't let you install 64-bit.) I've set my IIS app pool to allow 32-bit applications which I needed to get ADE to work in the first place. I'm running the v4 Framework and as far as I know my IIS settings are pretty much standard.Like I said, the code works every time when I run it through a WinForms app but occasionally fails through ASP.net on the same machine.
I would like to know the event order of form which is executed while opening form. I am showing my form using following code and the code in form_load event executes twice. Once when the form variables are initialised and second when form is displayed. I want it to execute once only. form showing code:
[Code]...
I posted a while ago asking how to manage correlative updates: url...I made that post under the assumption that the direct link i had in place (an attachment on a google site) would not change. Unfortunately I overlooked the fact that google sites use redirect links, just a hair short of direct links. I've heard of FTP Protocols and noticed threads in the c# sections on how to code them, but I don't know much about them. I really need an internet access link for my pgroam to download the file from and am not sure on what the best approach is to this problem. Please advise...I seek not answers, but understanding, that I may not solve, but learn.
View 2 RepliesI want to allow the end user to write vb.net code within my application that will interact with my application and database. I have seen software like this, such as GE iFix, Excel, and others.
View 2 RepliesI have a working WCF, it is written in VB. I need to host it in Windows Services on a remote server. I cannot use IIS (they uninstalled after I had it installed). Specs are to host in Windows Services, the only way I can get around that is to quit.
[Code]...
I have developed a website using ASP.NET/VB + SqlServer 2008 and Dotnetnuke CMS.Now I have to host it on easycgi.com I have some questions:How should I restore my db (unfortunately easycgi supports just sqlserver 2005) so what should I do to convert my db to 2005?and what should I do to host my website (step-by-step "please").
View 1 RepliesI've created a WCF service and, with help of others from this site and the department I work in, the WCF service is running as a service on my development machine. Tested it with a console app and it works.But, it's not supposed to be on my development machine. It needs to be on a different server.This is difficult because the server it is supposed to reside on DOES NOT have Visual Studio installed on it.So I cannot run the VS 2008 Command Prompt with installutil to run the WCF service as a service on that server.
View 3 RepliesRead this: [URL]. Now the question: I want the client will connect to web server (or web hosting).
View 8 RepliesI have a Winform UC packed in a CAB and hosted in an aspx web page using the <object> tag. In IE7, things work. But in IE8, no matter what settings I choose, the control never gets installed. I need to point IE8 to the CAB, download it, unpack it, and run the installer in the client machine, outside IE8. The UC is fairly complex, and requires several DLLs (third party components). The control reads data from hidden fields in the hosting page, and calls javascript functions on the page.
View 4 RepliesI'm just starting to use VS 2010 - not sure if this was available in VS 2008 - but I was reading about the Hosting Process you can start for debugging.This allows you to call methods and jump into breakpoints in them without starting the whole app running.
View 3 RepliesI am currently hosting an IE Browser control in a .NET (2.0) Form and using it to load Office files such as Excel and Word thusly:[code]The hosting and loading works well except whenever I navigate to a file I am presented with a dialog that asks whether I want to save or open the file. (This is standard IE file-download behavior.) I always want to open it of course and I do not want the dialog to show.Another issue is that when I close the window that hosts the IE control and the Office doc the document does not close and remains open on disk. This means that subsequent attempts to open the same file via my app or the native office app will fail because of the sharing violation.Is there a programmatic way of avoiding this dialog and cleaning up resources afterward? I am asking for a programmatic answer because web research has only yielded solutions that entail modifying OS-level settings.
Host an Excel spreadsheet inside my application.Work rather transparently (avoid usability issues like the one described above)Avoid having to make any OS-specific changes that may affect other applications (especially icluding IE)Is zero additional cost (no licensed 3rd party libs please) Code Project and other open source resources are OK.Not mess around with the DSO Framer ActiveX control, unless a stable version is developed/discovered
In my Visual Basic 2010 project, I want to send a series of plain .txt files to somewhat of a database where they can be stored. The best way I can describe it is like an email system with attachments. The information that is being sent is not sensitive information therefore security doesn't matter, I would like to receive it and add it into a database. Is there any place where I can send these text files to in an email(attachment) like fashion but without needing to enter credentials first? If so, could you please assist me or guide me in the right direction?Sending the information through email would be swell, however this would require the user to first submit their email information which defeats the purpose of the what I'm trying to do.
View 4 RepliesI'm trying to develop a tool to make upload of movies to some Hosting Servers like [URL]
I need to fill flash form and then submit the movies automatically!
Are there any web hosting packages that accepts a website, a mysql database, and a system created in vb.net.This is my thesis project. Both website and system's database are connected to each other. It means that when I add a user using the system, the user that I added must be able to login on my website.
View 1 RepliesWe have a .NET Winforms application that hosts the Crystal Reports Viewer control (Version XI). It works well for the most part but when an export of data from the viewer is performed the application will crash on exit and in unmanaged code. The error message is not very useful and just says that an incorrect memory location was accessed. No other info such a specific DLL etc. is provided.
This only happens after the viewer is used to export a report to CSV, XML etc. My guess is that at some point in the export process Crystal creates a resource that attempts an action on shut down to a parent window (perhaps) that no longer exists.I've seen a number of memory leak and shut down issues with Crystal but this one's new. Has anyone seen it and come up with a workaround or has ideas for workarounds?So far we've tried explicitly disposing of all crystal-related objects, setting to null and even setting a Thread.Sleep cycle on shut down to "give Crystal time to clean up."
Update:The crash happens only on shut down (so not immediate)All export formats work
All export files are created properly
CR is installed on the same machine as the hosting .NET app not sure about exporting from the IDE... is that even possible?
I'm a C++ programming who was tapped to write a small application in Visual Basic. The application hosts an IronPython runtime and I am attempting to define some function in python and then call them from VB. I have written a simple test function in python
def test():
print "Test was Called"
Then I use the iron python to create a ScriptSource from the python file. I am able to look up the "test" variable through object operations but I can not figure out how to call the object that. For example (in VB):
pyScope = engine.CreateScope()
pySource = engine.CreateSourceFromFile("C:SomeFilepath est.py")
pySource.Execute(pyScope)
[Code]....
I am able to call the function and I see the expected output at stdout. I am still under the impression that there is some function-pointer-like type that I can cast objects of type PythonFunction to which will let me invoke temp directly without calling to the Python engine.
I am trying to use a COM dll referenced from a vb.net project. Everything works fine when I reference the interop inside the IDE but when I publish the file in bin folder on my server I get:
Retrieving the COM class factory for component with CLSID {A440BD76-CFE1-4D46-AB1F-15F238437A3D} failed due to the following error: 80040154.
I can't register the original dll with regsvr as the server is with a hosting provider and I thought the point of interops was to be able to use old COM dlls without having to register them
I'm new to database design and am using Visual Basic 2008 Express.
View 5 RepliesI've followed the tutorial on the MSDN for this subject to the T and I'm not getting the User Control to Display in the cell.
I don't think the InitializeEditingControl is ever getting called by the Cell for some reason.
Here are my classes:
This is the actual User Control Class:
vb.net
Public Class CustomCheckBoxUC
Implements IDataGridViewEditingControl
[Code]....
How would I upload a TXT File to a site lik
View 1 RepliesI have a set of tools that I've built as a class library that is hosted/referenced within a main application (ESRI's ArcMap). I'd like to manage the case where a user may pull the pin on the main application while they have unsaved/unmanaged edits pending. I tried handling the Application.ThreadExit event w/ no success. Is there a best practice for accessing the closure of a hosting application in .Net?
View 2 RepliesI was developing a website on development server. I created a user authentication and access rules on my website. So VS created Aspnetdb. I also created a login page using in built login control. I deny all the anonymous users to the page so it will redirect to login page everytime.
Now that I moved aspnetdb and my website to the remote server to the new hosting I bought. I also merged few tables into aspnetdb. But I don't know how to change the connection string for that login control. I didn't write any code myself for that and there is no connection string in the web.config to connect to aspnetdb. For other pages where I created from scratch myself, I changed the connection strings to the aspnetdb and it works fine, but Login control don't.
We are using ClickOnce Technology to deploy our applications using In Place Hosting Manager.I install Ver 1.0.0.0 for an application XYZ. More upgrades happen and I install till Ver 1.0.0.7. At this point the minimum required version is set to Ver 1.0.0.5. But,now I want to move back to Ver 1.0.0.3.Will In Place Hosting Manager install Ver 1.0.0.3 though we don't change the minimum required version? My motive is to only change the location of deployment manifest and keep on jumping across versions(Up and Down).
View 1 RepliesSilverlight project with tabcontrol hosting canvas objects. I want to wrap my entire tabcontrol with a scrollviewer so that on a short display you can scroll vertically to see the whole area on my canvas.When I run my project my scrollviewer vertical bar is always showing even when there's more room vertically than needed for a scrollbar.
All I am trying to accomplish here is a min resolution of 1280x768 to be scrollable and anything bigger than that have the scrollbars hide. My laptop is only 768 tall, but my canvases were developed with 1280x1024 in mind. So I would like a way to set this up so that everyone can scroll or just see the canvas all at once depending on their resolution.
Anyone have any ideas why it is always visible? I've tried setting canvas width and height. I tried setting stretch on alignments on the outer grid. Saw both those tips while searching other issues similar to mine.
Some code:
<Grid x:Name="LayoutRoot" MinHeight="768" MaxHeight="1024" MinWidth="1024" MaxWidth="1280" Background="#FF6A6868" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0.775*"/>
[code]....
....lots of child canvas items in my "Main Floor" canvas. Child canvas objects contain lots of path objects. None which are taller or wider than the main floor canvas width/height.
<sdk:TabItem Margin="0" Header="Mezzanine">
<Canvas x:Name="Upstairs" HorizontalAlignment="Left" Height="1000" UseLayoutRounding="False" VerticalAlignment="Top" Width="1280">
..another tab. Same deal with child canvas objects.
I am making a program that edits my website with the input that I put in. But, it is requiring multiple forms (obviousily), but I don't know how to make it close the one I am in while opening the other. For example: I have a form that opens first that requires a Username and Password, so nobody can obviousily use it without knowing them. When I submit the correct username and password and go on with the editing, I need the login form to close. I do not know the coding for this part. Is it:
[Code]...
Is it possible to set a project default for VB.NET winforms projects so that the default Modifier for controls added to winforms is Private (not Friend)?I know there's a "modifiers" property in the properties window so I can set it for each individual control however I would like to change the project so from now on myself and other developers have to specifically decide to change from friend to private. (Which I would strongly discourage them from doing).I believe there is no way of doing this, but on another forum a while ago someone mentioned it would be possible with an add-in (but didn't name the add-in or where to get it).
View 1 RepliesI want to take opening balance when i open a report between date parameter it show the opening balance, actually i have three columns "description" "debit" "credit" in crystal report now i want to add 1 more field which come throuhd formula which is opening balance. i have a data of debit credit from 2006. but user choose to show the data from 2008 so i want that the balcne from sum of debit and credit side between 2006 to 2007 end come in the shape of opening balance in the report and then add the debit and credit side of report into opening balance. i put a following fromual bt not accept it sum ({vr_detail.debitT})-sum({vr_detail.creditT}) > {?strtdte}
View 1 RepliesI have a proto-type winform app designed by a colleague. My original plan was to create it using asp.net, but I'm not sure if I should just 're-create' it using asp.net or continue forward using the winforms. Either way, I'd use vb.net as the code-behind.
It's going to be a data collection app; originally it was going to allow the collection screens to by dynamically built, based on options selected by the end-users. However, that has changed to a one-size fits all approach.
I've never written anything using asp.net, so what I'd really like is some advice about what should I be looking for/at in this new app, in order to decide which way to finish it... asp.net OR winforms... Would there be any design/programming advantages to using asp.net over the winforms (other than the fact that my colleague already have about a dozen forms designed, but with NO code-behind)? Might there be end-user advantages to using asp.net vs winforms?
I'm currently studying for one of Microsoft's MCPD 3.5 certifications (VB 2008) and one of the things it makes use of is WPF applications. Based on what I've seen of them so far, they are basically like Windows Forms Applications. So my question about them is why was WPF created? What was Microsoft looking to accomplish with WPF since outside of the "web feel" in a windows environment, it basically looks like a WinForms application. What is the difference between the two and when sould I use one over the other?
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