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Frequently Asked Questions

Are there any special server requirements for hosting a "ClickOnce" application?

General - Windows Forms FAQs
No. "ClickOnce" does not use any special protocols to transfer files. So you can use a regular file share, IIS or any web server. If you are using a web server, there are a few additional considerations. First, you may need to configure the... See similar questions...

Can I create a customizable "ClickOnce" application?

General - Windows Forms FAQs
For example, let's say you want to define an add-in model, or provide some base forms so my customers can extend to customize the look-and-feel of my app by just dropping in additional assemblies. How can you achieve this with "ClickOnce"... See similar questions...

Can I pass arguments to my "ClickOnce" application?

General - Windows Forms FAQs
Yes. When a "ClickOnce" application is activated via a URL, the application can obtain the QueryString of the URL used to activate the application. See similar questions...

Is there something I should be doing now in my application to prepare for "ClickOnce"?

General - Windows Forms FAQs
Most applications won't have to know anything about "ClickOnce" to be deployed with "ClickOnce". In most cases, using "ClickOnce" is as simple as creating the necessary manifest files & placing the application on a server... for which we provide tools... See similar questions...

Can I distribute my "ClickOnce" application via CD?

General - Windows Forms FAQs
Yes and your app will still be auto-updateable via a network server you configured into the "ClickOnce" deployment when you created the CDs. This is a great solution for large applications or for applications that have pre-requisites installed with the... See similar questions...

Can I install a "ClickOnce" application per-machine?

General - Windows Forms FAQs
No. All "ClickOnce" applications are installed per-user. Each user is totally isolated from one another and must install their own copy. If your application needs to be installed per-machine, you should use MSI. See similar questions...

What is "ClickOnce"?

General - Windows Forms FAQs
quot;ClickOnce" is the codename for a technology that ships in the .NET Framework 2.0 that allows Windows Forms based client applications to be downloaded & run over the Network. Quite simply, "ClickOnce" makes running a client application... See similar questions...

Can I use "ClickOnce" to deploy an Office addin?

General - Windows Forms FAQs
No. Addins generally require special registration and integrated activation within the hosting application. The "ClickOnce" installer does not support machine level changes such as this. See similar questions...

What is the dfsvc.exe process that starts when I use "ClickOnce"?

General - Windows Forms FAQs
That is the actual "ClickOnce" engine that is handling the update checks & downloads. It is launched when a "ClickOnce" application needs updated. It shuts itself down if not used for 15 minutes. See similar questions...

Can I deploy managed C++ applications with "ClickOnce"?

General - Windows Forms FAQs
You can use "ClickOnce" to deploy .NET Framework based applications built with any language, including C++. See similar questions...

Can I use "ClickOnce" to deploy console apps?

General - Windows Forms FAQs
You can, but wouldn't you rather have a rich Windows Forms based UI? Also, console apps that require a command-line interface are beyond the scope of "ClickOnce" deployment in the .NET Framework 2.0. The primary reasons for this is that the install path... See similar questions...

Can "ClickOnce" applications be run when offline?

General - Windows Forms FAQs
Yes, "ClickOnce" applications that choose to be installed get an entry added in the Start Menu that can be used to launch the application when disconnected from the network. Note however, it's still up to the application to make sure it can work offline... See similar questions...

Do I have to have Visual Studio to use "ClickOnce"?

General - Windows Forms FAQs
No. While Visual Studio makes deploying "ClickOnce" applications simple, there are several other ways to deploy "ClickOnce" applications. The .NET Framework SDK includes a tool named MAGE(Manifest Editor & Generator) that provides both a UI (mageui... See similar questions...

How does MSI relate to "ClickOnce"?

General - Windows Forms FAQs
ClickOnce" & MSI are separate but, complimentary application installer technologies. "ClickOnce" is targeted at web based per-user deployments. This has a lot of benefits, but also means you can't do anything & everything at install time. If... See similar questions...

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