Did you get this issue? Canvas width problem? RSS

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Last post May 20, 2011 10:08 AM by notacat

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bacnt

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Did you get this issue? Canvas width problem?

Dec 29, 2008 08:15 AM | LINK

Here is my example:

<UserControl x:Class="DrawSilverlight.Page"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
    Width="800" Height="500"  xmlns:local="clr-namespace:DrawSilverlight">
    <Canvas Width="800" Height="500" Background="White">
        <ScrollViewer x:Name="scrvTest" HorizontalScrollBarVisibility="Visible" VerticalScrollBarVisibility="Disabled" Height="400" Width="800">
            <Canvas x:Name="cnvTest" Background="Gold" Height="400" Canvas.Left="0" Canvas.Top="0" Width="300000"></Canvas>
        </ScrollViewer>
    </Canvas>
</UserControl>

You see, I set canvas cnvTest width is 300000 pixels (very large) but I don't know why when I set cnvTest is more than 32762 the cnvTest is seem to be cut into some parts and it's not solid like normal? It made me two days to try but result is zero.

Did you get this ? Help me please!

In my situation, canvas width would be very large :(

Thank in advanced!

Best Rgds

Nong Tien Bac
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bryant

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Re: Did you get this issue? Canvas width problem?

Dec 29, 2008 06:45 PM | LINK

What do you mean

bacnt
is seem to be cut into some parts and it's not solid like normal?
?

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bacnt

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Re: Did you get this issue? Canvas width problem?

Dec 30, 2008 03:30 AM | LINK

Like my previous post, I said that when I set cnvTest width > 32762. It will be shown like below: whole wrong

Nong Tien Bac
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SteveWong

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Re: Re: Did you get this issue? Canvas width problem?

Dec 30, 2008 05:31 AM | LINK

I do think it is a bug

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vinCracker

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Re: Re: Did you get this issue? Canvas width problem?

Dec 30, 2008 10:41 AM | LINK

Yes, I can also reproduce it. But when I see control in blend it show no error while in running mode(in browser) I got this behavior. I also searched about the maximum width/height a control can have but seems no documentation about that. Also found many wired behavior when changed height to the width ratio. Not sure about what cause this.

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bryant

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Re: Re: Did you get this issue? Canvas width problem?

Dec 30, 2008 08:12 PM | LINK

I think you'd be better off trying to figure out another way to do what you want without having a canvas that is so large. Why do you need such a large canvas?

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bacnt

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Re: Re: Did you get this issue? Canvas width problem?

Dec 31, 2008 02:23 AM | LINK

Yes, I have to. My canvas would be so large. Imagine, first time my canvas width is about 200px and it contains 1 Rectangle (width 5px). when I choose that Rectangle and click FIT -> line will be increased and certainly canvas width would be increased too. Do you know Timeline application? I view Month and it shows ok, but when I click one Timeslot in Month and click FIT (Zoom width) my canvas will be increased and width of it is about morethan 100000 pixels [:(] I don't know what is the cause here? Is there any solution, microsoft huh? It would be fixed in Silverlight 3? And when will Silverlight 3 to be released? [:'(]

Nong Tien Bac
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Amanda Wang...

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Re: Re: Did you get this issue? Canvas width problem?

Jan 05, 2009 01:39 AM | LINK

Hi bacnt,
Thanks for reporting this. We have known this issue and we have been tracking this issue, now.

Amanda Wang
Microsoft Online Community Support

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bacnt

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Re: Re: Did you get this issue? Canvas width problem?

Jan 05, 2009 02:08 AM | LINK

Thanks for your reply, I hope it will be fixed as soon as possible. I know the Silverlight is a new one and subject to containing many issues. Hope hope and hope!!!

Nong Tien Bac
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Olav Haga

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Re: Re: Did you get this issue? Canvas width problem?

Jan 05, 2009 05:38 AM | LINK

I had the same problem.

My solution is to create a white canvas with the large width. (Think my max was 42000)

I needed a 15 pixel higy grey field at the buttom on the canvas. This had to be done in a loop. I don't remember the limits, but say that you can write a rectangle with 1000 pixels with and the fill it you can do that 42 times and your problem is solved. Rectangle and Line has the same limits in with. The limit is more than 1000. This worked fine, the problem was performance. So my solution now is to just draw the canvas that is showed. Need to draw again each time the user scroll.