An issue with the file name SerialPortSettings.xml
In XAML I’m trying to declare XmlDataProvider objects to bind controls to XML files.
The second instance generates an error:
<XmlDataProvider x:Key="SerialPortOptions" Source="Settings/SerialPortOptions.xml" XPath="//Options" /> <!—- This one works. No complaints. -->
<XmlDataProvider x:Key="SerialPortSetting" Source="Settings/SerialPortSettings.xml" XPath="//SerialPorts" /> <!—- But this one gives an error. -->
The SerialPortSettings.xml file is added to the project and the Build Action is set to ‘Resource’. If I rename the file to SerialPortSettingses.xml, the error disappears. What’s special or unusual about the original file name SerialPortSettings.xml?
The file Settings/SerialPortSettings.xml is not part of the project or its 'Build Action' property is not set to 'Resource'.
Re: An issue with the file name SerialPortSettings.xml
I think there is nothing special about the name, but maybe it should correspond to the key? In the first case, key is same as filename (SerialPortOptions), in second the key is SerialPortSetting, while file name (you want it to be) SerialPortSettings.xml. There also could be some garbage somewhere in solution/project. Try to delete .suo file and labore with build action, e.g. set it to Embeded Resource and back and so on...