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Is there a way to run a native Windows application if .NET is not installed on the target machine?
There was a way to do this with MS-DOS and Windows applications, by attaching a stub[^] application to the main executable. Then, if the application was launched in MS-DOS, the stub would run instead, usually providing a suitable error message.
Does something similar exist for .NET 2.0?
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No the .net framework must be installed.
Ben
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The .NET Framework must be install for the app to work.
You could create a stub, written in unmanaged C++ that MIGHT work, but I haven't heard of anything available or anyone writing one.
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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Dave Kreskowiak wrote: You could create a stub, written in unmanaged C++ that MIGHT work
Yes, but how? 
The MS-DOS stub was trivial - it was just a one line .EXE that told you to go get Windows. It was added at link time by the /STUB linker argument. I can't find any documentation (apart from vague references to statements like ".NET will contain a win32 stub...") on how to do this - or even if such a thing is possible!
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I have no idea. Because of the very specialized mature of what you want, I'd suspect that examples are going to be few and far between.
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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Could you not write an unmanaged C++ launcher, that checks if .NET is installed and if so runs the app, and if not gives a simple dialogue that informs the user to install it?
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I think that stub will be there in the assembly. Try running a .net executable from MS-DOS. It will throw you the same old error message(This program can...)
Cheers,
Suresh
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I think the difference here is that just because you are running in a dos shell the windows operating system was still installed. In this case we are taking about something that is not installed. There are three core dlls that run the .net framework. Without these a .net app will not run.
Ben
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Hello ,
I am new in coding with c++ on the cisual studio 2.0 framework can someone help with this code , i am trying to implement clicking an exit button and calling the message::show function i get error message
Yes' : is not a member of 'System::Windows::Forms::Form::DialogResult'
private: System::Void exitButton_Click_1(System::Object^ sender, System::EventArgs^ e)
{
if(MessageBox::Show("Are you sure you want to exit this program?", "Close Application!", MessageBoxButtons::YesNo, MessageBoxIcon::Question) == DialogResult::Yes)
{
Application::Exit();
}
else{
return;
}
d
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I think that should be DialogResult::OK.
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Hi all..
I have two dropdown list boxes in an aspx page to which i have to load items from the database..When i run the application i am getting the following error...
Auto- attach to process '[3236] aspnet_wp.exe' on 'machine 171' failed
Someone help in this regard..very urgent..
Regards,
Balaguru
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I require a software component to be added to an existing .net application(web based). The coponent or the software should posses the following features:
1. It should provide PC to Phone integration either on VOIP technology or TAPI or both.
2. It should provide automated phone dialing from phone number lists.
3. Transfer calls to other users internally.
4. Record conversations and provide automated call reports and statistics.
5. Every phone number in the system should be automatically clickable and the call details must be logged to that user.
6. The phone call must be recorded and stored as a sound file.
Can anyone help me to find any freewares or commercial products available in the market which can provide me the above features.
Thanks in Advance
----------------------------------
where there is a will there is a way
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NasimKaziS wrote: require a software component to be added to an existing .net application(web based).
You want a "component" to do all this? Something that would be normally found in a suite of applications??
NasimKaziS wrote: Can anyone help me to find any freewares or commercial products available in the market which can provide me the above features.
This is something you would probably require an entirely new phone system for! I seriously doubt you're going to find an all-software solution to this.
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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Even i doubted the same, i need to report to my manager reg. this, thats y posted in codeproject just to ensure i didnt miss out anything..
TC 
----------------------------------
where there is a will there is a way
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I've been wondering this for a while now, and i'm not sure what the best way to deal with it is.
Basicaly, i have a scenario where data is coming into an aspx page that is tamperable by the user. In this case the Querystring.
I am creating a wrapper class that wrapps the Request and then attempts to parse and strongly type the Querystring values so i can expose them as typed nullable properties.
My question is, whether it is better to Throw an exception on parse failure, or raise an event that informs the invoking application that it failed, and then return null.
I have gone for the second solution becase of the speed over exceptions, but it's something i've been mulling over for a while now.
Generaly i'd rather raise exceptions only for programming state errors and have validation of user changable input handled more gracefully. I was just wondering what other peoples opinions on this are, and what they would recommend.
I recently moved into building more comprehensive exception models for my apps and have found that it removes a lot of the ambiguity from the code.
Cheers
Tris
-------------------------------
Carrier Bags - 21st Century Tumbleweed.
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I wouldn't raise an exeption for validating a user's input. It is something you expect to be invalid rather than invalid information being the exception.
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I suppose the situation i am in is unusual.
Basicaly, it's a proxy website which should not handle any kind of user input. All input will be generated by the calling application, and if the user was to tamper with it then it should fail.
For this reason, rather than a 'validation', i should probably be throwing an exception.
(I spent the weekend mulling that over, for a normal web page, validation would be the way to go.)
Cheers
Tris
-------------------------------
Carrier Bags - 21st Century Tumbleweed.
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Does any one know how to get the file "property-value" pairs for a particular file. The property-value pairs appears in Windows Explorer when you select a file and view properties, and then select the summary tab (Advanced). My camera puts additional information (such as shutter speed and aperature settings) in this collection. I cannot view them in the "detail view" in Windows Explorer (i.e. you cannot add them to the view). I thought I would write a quick app to display these values next to each picture.
Nothing I can find in the System.IO library allows me to get at this collection. I found the DSOFile object but this only works with Ole file (excell, word, powerpoint,...)
Any ideas if it can be done with the .Net libraries?
Tom K
Tom K.
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you can create an Image from the file, and then investigate its properties, see
Image.FromFile() and Image.GetPropertyItem().
I once found a range of property IDs and property names, as in:
Hashtable propNames=new Hashtable();
propNames.Add(0x010E, "ImageDescription");
propNames.Add(0x010F, "EquipMake");
propNames.Add(0x0110, "EquipModel");
propNames.Add(0x0112, "Orientation");
propNames.Add(0x011A, "XResolution");
propNames.Add(0x011B, "YResolution");
propNames.Add(0x0132, "DateTime");
propNames.Add(0x0128, "ResolutionUnit");
propNames.Add(0x0131, "SoftwareUsed");
propNames.Add(0x0201, "JPEGInterFormat");
propNames.Add(0x0202, "JPEGInterLength");
propNames.Add(0x0213, "YCbCrPositioning");
propNames.Add(0x501B, "ThumbnailData");
propNames.Add(0x502D, "ThumbnailResolutionX");
propNames.Add(0x502E, "ThumbnailResolutionY");
propNames.Add(0x5090, "LuminanceTable");
propNames.Add(0x5091, "ChrominanceTable");
propNames.Add(0x829A, "ExifExposureTime");
propNames.Add(0x9003, "ExifDTOrig");
propNames.Add(0x9004, "ExifDTDigitized");
propNames.Add(0x9204, "ExifExposureBias");
propNames.Add(0x9209, "ExifFlash");
propNames.Add(0x927C, "ExifMakerNote");
propNames.Add(0x9286, "ExifUserComment");
propNames.Add(0xA002, "ExifPixXDim");
propNames.Add(0xA003, "ExifPixYDim");
but there may be more of them...
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I am trying to install .net 2.0 framework on my xp sp2, but the installtion asks for the windows installer 3.0 which is already included in xp sp2, however i downloaded windows installer 3.0 and tried to install it but it failed because sp2 is already there. Did anyone have similar problem like this? Currently I have .net 1.1 and vs2003 in my computer, do i have to uninstall it before install .net 2.0? Thank you in advance.
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You might want to try installing Windows Installer 3.1[^].
No, you don't have to uninstall .NET 1.1 first. All versions of the .NET Framework are designed to coexist without any issues.
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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thank you for your help, i installed 3.1 but its still the same
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You said it failed "because SP2 is already there". What makes you say that? The SP of XP doesn't matter with the installation of the .NET Framework 2.0.
Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007
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when i try to install windows installer 3.0 it says "Setup has detected that the service pack version of this system is newer than the update you are applying. there is no need to install this update". But i guess the windows installer 3.0 doesnt know I need it for .net 2.0.
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