Merge pull request #3 from yanchao891012/master

替换原来的Null转换器

src/Shared/HandyControl_Shared/HandyControl_Shared.projitems

@@ -209,7 +209,7 @@
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Converter\Color2HexStrConverter.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Converter\Int2StrConverter.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Converter\Long2FileSizeConverter.cs" />
-    <Compile Include="$(MSBuildThisFileDirectory)Tools\Converter\Null2VisibilityConverter.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)Tools\Converter\Object2VisibilityConverter.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Converter\Object2BooleanConverter.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Converter\String2VisibilityConverter.cs" />
     <Compile Include="$(MSBuildThisFileDirectory)Tools\Converter\String2VisibilityReConverter.cs" />

src/Shared/HandyControl_Shared/Themes/Basic/Converters.xaml

@@ -16,6 +16,6 @@
     <converter:Int2StrConverter x:Key="Int2StrConverter"/>
     <converter:BorderClipConverter x:Key="BorderClipConverter"/>
     <converter:BorderCircularConverter x:Key="BorderCircularConverter"/>
-    <converter:Null2VisibilityConverter x:Key="Null2VisibilityConverter"/>
+    <converter:Object2VisibilityConverter x:Key="Object2VisibilityConverter"/>
 
 </ResourceDictionary>

src/Shared/HandyControl_Shared/Tools/Converter/Object2VisibilityConverter.cs

@@ -5,7 +5,7 @@ using System.Windows.Data;
 
 namespace HandyControl.Tools.Converter
 {
-    public class Null2VisibilityConverter : IValueConverter
+    public class Object2VisibilityConverter : IValueConverter
     {
         public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
         {