1. C Sharp Download With Progress Bar Chart In Excel
2. Fitbit Charge Hr Stuck With Progress Bar
3. C Sharp Download With Progress Bar Chart Excel

I'm trying to write a C# Windows application which downloads a file (waits for that download to complete - providing some indicator of progress) and then executes the downloaded file. I think I either need:

• A synchronous download that has a progress indicator AND doesn't make my application unresponsive
• An asynchronous download that waits for the download to complete and then attempts to execute it.

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The former (synchronous download) seems to do what I want but I can't find a way to indicate progress any way and it appears to make my program non-responsive (like it's hung) - which may cause users to close the application instead of waiting for it to finish downloading.

The reason that the progress bar takes so long to appear then disappears almost immediately is because your code is running on the same thread as the interface, so it isn't letting the progress bar appear until it is already redundant.

The later (asynchronous download) I've been able to accomplish with a progress indicator etc but what happens is that the download kicks off and my application immediately tries to install it before its finished downloading which of course fails.

So whats the best way to accomplish this? Below is the code I presently have for the async download with progress bar.

Edit 4/10/2012

The old code was getting to cumbersome to work around so here is what I presently have. It works except that it doesn't update the progress bar.

Edit 4/11/2012

C Sharp Download With Progress Bar Chart In Excel

So I have edited my backgroundworker do work as follows:

If I uncomment the last line the progress bar proceeds to 100%. But its not progressing using:

Any ideas why?

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ChrisWueBradBrad

4 Answers

You can use a BackgroundWorker to perform a synchroneous download in the background. It supports progress reporting as well. This will avoid blocking your UI (because the download is running on a different thread).

ChrisWueChrisWue

You can use the ManualResetEvent class to wait on your main thread (using WaitOne()) until your client_DownloadFileCompleted() event handler is called (which calls Set() on your object).

Philipp SchmidPhilipp Schmid

Have you considered using ClickOnce to do this? It will solve your problem along with auto updates.

Check out this SO questions for places to get started: https://stackoverflow.com/questions/1635103/how-to-basic-tutorial-to-write-a-clickonce-app.

Philipp SchmidPhilipp Schmid

No need to wrap the WebClient in a BackgroundWorker as it is already asynchronous (using a thread from the thread-pool).

Note: The sample below was written in the editor, whilst I checked the MSDN documentation for the method signatures I could have easily have made a mistake.

The only thing that needs to be sorted now is how to make the program wait; if it is a console program then call Console.ReadKey() after the InstallSecuniaPSI().

HTH,

DennisDennis

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I need help on implementing a circular progress bar like this:

How should I implement the Circle to fill by increasing Value property?

JalalJalal

4 Answers

You have a couple of options - the first is to template the ProgressBar control. This turns out to be a little tricky. I wrote a blog post which describes how to use an attached ViewModel to achieve the required effect.

The other alternative is to create your own control from scratch. You could do the following:

1. Create a new user control
2. Add new Value, Maximum and Minimum dependency properties to it.
3. Handle the Value, Maximum and Minimum property change events in your user control to compute an Angle property.
4. Construct two 'pie pieces' in code behind (see this post) and add them to the UI.

ColinEColinE

It's a bit tricky but not impossible. Here is the my implementation using smooth animations to guide. Value converters should be used to create a CircularProgressBar.

CircularProgressBar.cs

AngleToPointConverter.cs

Fitbit Charge Hr Stuck With Progress Bar

AngleToIsLargeConverter.cs

App.xaml

It can be more customized by adding a few more properties such as InnerRadius, Radius etc.

Ali Tor

C Sharp Download With Progress Bar Chart Excel

Ali Tor

I know this is an old issue, but anyways here is my solution:

FOR WINFORMS:

IMPLEMENTATION:

1. Place the source code into a new class anywhere in your WinForms project, name the class 'CircularProgressBar.cs'.
2. Compile the Project.
3. After Compiling you should see a new Control or 'Component' at the ToolBar.
4. Drag and drop this new control into any form and customize its properties.

Control Looks like this:

Enjoy.

Have you looked at ValueConverters? You can bind to the Value property in the template using TemplateBinding and use an appropriate value converter to change the value to whats is useful for a Circular progress bar.

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EDIT:

In the template:

1. Add a circle fill with yellow.

2. Add another circle on top with color orange.

3. Use a value converter(or multi value converter) to return a clipping geometry (using arc segment possibly) for the circle added in 2.

4. Clip the circle in 2. with geometry returned in 3.

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Dave ClemmerNVMNVM

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