XamlReader has problem with WindowsFormsHost

  • Thread starter Thread starter Haiping
  • Start date Start date
H

Haiping

I use XamlWriter to write a UserControl to xaml string. The UserControl has
the following namespace:
xmlns:wfi="clr-namespaceystem.Windows.Forms.Integration;assembly=WindowsFormsIntegration"
But the xaml string does not have the WindowsFormsIntegration namespace. It
also has <av:WindowsFormsHost>. I added WindowsFormsIntegration namespace in
the xaml string and change <av:WindowsFormsHost> to <wfi:WindowsFormsHost>.

When XamlReader parse a xaml string it throws the following exception:
"The tag 'WindowsFormsHost' does not exist in XML namespace
'clr-namespaceystem.Windows.Forms.Integration;assembly=WindowsFormsIntegration'. Line '1' Position '1284'."

I don't know why.
Thanks for any input.
 
Haiping said:
I use XamlWriter to write a UserControl to xaml string. The UserControl
has
the following namespace:
xmlns:wfi="clr-namespaceystem.Windows.Forms.Integration;assembly=WindowsFormsIntegration"
But the xaml string does not have the WindowsFormsIntegration namespace.
It
also has <av:WindowsFormsHost>.
Click to expand...

So, what namespace is the "av" prefix mapped to at that point?
I added WindowsFormsIntegration namespace in
the xaml string and change <av:WindowsFormsHost> to
<wfi:WindowsFormsHost>.
Click to expand...

Can you show your XAML (the bits relevant to this discussion)? It's quite
hard to follow your description, the code would be much easier to deal with.
When XamlReader parse a xaml string it throws the following exception:
"The tag 'WindowsFormsHost' does not exist in XML namespace
'clr-namespaceystem.Windows.Forms.Integration;assembly=WindowsFormsIntegration'.
Line '1' Position '1284'."
Click to expand...

If the string is as written above, then I imagine it would complain. It
should be "clr-namespace:System...".

Unless you've made a typo twice. In which case, again, it is still better to
disambiguate by showing the code (actual code though, please, not a
re-type - to avoid typos).
 
Haiping said:
I use XamlWriter to write a UserControl to xaml string. The UserControl
has
the following namespace:
xmlns:wfi="clr-namespaceystem.Windows.Forms.Integration;assembly=WindowsFormsIntegration"
But the xaml string does not have the WindowsFormsIntegration namespace.
It
also has <av:WindowsFormsHost>.
Click to expand...

So, what namespace is the "av" prefix mapped to at that point?
I added WindowsFormsIntegration namespace in
the xaml string and change <av:WindowsFormsHost> to
<wfi:WindowsFormsHost>.
Click to expand...

Can you show your XAML (the bits relevant to this discussion)? It's quite
hard to follow your description, the code would be much easier to deal with.
When XamlReader parse a xaml string it throws the following exception:
"The tag 'WindowsFormsHost' does not exist in XML namespace
'clr-namespaceystem.Windows.Forms.Integration;assembly=WindowsFormsIntegration'.
Line '1' Position '1284'."
Click to expand...

If the string is as written above, then I imagine it would complain. It
should be "clr-namespace:System...".

Unless you've made a typo twice. In which case, again, it is still better to
disambiguate by showing the code (actual code though, please, not a
re-type - to avoid typos).
 
Hi Pavel,
I found the problem. Now the XamlReader works.
XamlWriter writes xaml string it does not load WindowsFormsIntegration.
After I do the following repeacements the XamlReader can read the Xaml string.

string xamlStringWithWfi =
originalString.Replace("DockSite.IsDocument=\"True\" ",
"DockSite.IsDocument=\"True\"
xmlns:wfi=\"clr-namespace:System.Windows.Forms.Integration;assembly=WindowsFormsIntegration\" ");

xamlString = xamlStringWithWfi.Replace("av:WindowsFormsHost>",
"wfi:WindowsFormsHost>");

Thanks for your help,
 
Hi Pavel,
I found the problem. Now the XamlReader works.
XamlWriter writes xaml string it does not load WindowsFormsIntegration.
After I do the following repeacements the XamlReader can read the Xaml string.

string xamlStringWithWfi =
originalString.Replace("DockSite.IsDocument=\"True\" ",
"DockSite.IsDocument=\"True\"
xmlns:wfi=\"clr-namespace:System.Windows.Forms.Integration;assembly=WindowsFormsIntegration\" ");

xamlString = xamlStringWithWfi.Replace("av:WindowsFormsHost>",
"wfi:WindowsFormsHost>");

Thanks for your help,
 
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