需求描述
1.按鈕的狀態(tài)需要根據(jù)多個(gè)數(shù)據(jù)源的內(nèi)容作出不同的組合判斷
2.每個(gè)數(shù)據(jù)源的判斷規(guī)則可定制
注：以下功能感覺只是簡(jiǎn)單粗暴的實(shí)現(xiàn)，如果您了解更優(yōu)雅的解決方案，煩請(qǐng)告訴我下，感謝先！

按鈕XAML
代碼如下:
<Button Name="btnOK"
                 Grid.Column="2"
                 HorizontalAlignment="Left"
                 VerticalAlignment="Center"
                 Command="{Binding Path=OKCommand}"
                 Content="{DynamicResource Common_Button_OK}"
                 IsDefault="True"
                 Style="{DynamicResource ButtonStyle}">
           <Button.IsEnabled>
             <MultiBinding Converter="{StaticResource InvalidMultiValidationRuleToBooleanMultiConverter}"
               ConverterParameter="objectnull|greaterthanzerointeger|greaterthanzerointeger|greaterthanzerointeger">
               <Binding ElementName="comboBoxFilter"
                        Mode="OneWay"
                        Path="SelectedItem" />
               <Binding ElementName="textBoxFrameRate"
                        Mode="OneWay"
                        Path="Text" />
               <Binding ElementName="textBoxSizeWidth"
                        Mode="OneWay"
                        Path="Text" />
               <Binding ElementName="textBoxSizeHeight"