Question

我正在使用这样的代码。当lan为null时，我收到异常 TypeInitializationException。

有没有办法检查URI是否为null？

ResourceDictionary dict = new ResourceDictionary();

dict.Source = new Uri("/Emdep.Geos.UI.Common;component/Resources/Language." + lan + ".xaml", UriKind.RelativeOrAbsolute);

    An unhandled exception of type 'System.TypeInitializationException' occurred in Emdep.Geos.UI.Common.dll## Heading ##

Answer 1

您应该做的是捕捉找不到FileNotFoundException时发生的ResourceDictionary：

ResourceDictionary dict = new ResourceDictionary();
try
{
    dict.Source = new Uri("/Emdep.Geos.UI.Common;component/Resources/Language." + lan + ".xaml", UriKind.RelativeOrAbsolute);
}
catch (FileNotFoundException)
{
    //the resource dictionary could not be located/loaded...
}

WPF C＃如何检查URI文件是否存在

1 个答案: