Is it possible to add watermark to the background of the chart?

[Fred]

I'm using .Net RenderFormat. How about background image?

 

Thanks

 

Fred

[Frank]

There is a background property in the Chart class. You can set it at design time, through the Wizard and at run-time.

For more details please review the documentation on the ImageBackground class.

[Fred]

Thank you Frank. The next question is: can I add the background image only when users try to print the chart? Thanks.

 

Fred

[Frank]

That gets tricky because the Print is done in the client. There is no property that will add a background only to print. By default the chart prints with no background.

You can theoretically do this by changing the chart right before printing, then changing it back, however this may cause some flickering.

I have never done anything like this client-side, an honestly I don't know whether JavaScript has everything needed to achieve this.

[Fred]

Thanks Frank. How do you print the chart on the client? Will it just pop up the printdialog? Any samples? Thanks.

[Frank]

Calling Chart.Printer.Print from your JavaScript will print the chart.

[Fred]

I got error:

"Class doesn't support Automation"

When I call Chart1.Printer.Print from my client side javascript. I'm using IE6 on Windows XP sp2. Any Thoughts?

Thanks.

 Fred

[Frank]

1) Make sure your chart is called Chart1

2) If you are using MainClient (UseMainClient is set to true) then you must add:

Chart1.Chart.Printer.Print

 

[Fred]

Hi Frank,

I tried both but none of them works. I don't know where to set UseMainClient.

Here is what my javascript code:

var chart1 = document.getElementById('<%= Chart1.UniqueID%>');

var chart1 = document.getElementById('<%= Chart1.UniqueID%>');

//chart1.Chart.Printer.Print;

chart1.Printer.Print;

Thanks.

Fred

 

[Fred]

Hi Frank,

What security setting should I apply to make the print work? Calling

Chart1.Printer.Print still gives me "Automation is not support" error.

Thanks.

Fred

[Fred]

It works when I granted FullTrust to ChartFX assemblies. Thanks for your help Frank.