（WPF）GridView等比例显示

1. 将ListView包裹在一个父Grid中
2. 写一个与ListView平行的Grid，设置该Grid的列数与ListView中GridView的列数相同，将该Grid各列设置列宽按比例分配
3. 将ListView中GridView的各列的Width绑定上述Grid的ActualWidth
4. 这样，通过设置上述Grid各列的比例，就对应设置了ListView中GridView的各列的比例

5. <Grid Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="3">
       <Grid>
           <Grid.ColumnDefinitions>
               <ColumnDefinition Width="3*" />
               <ColumnDefinition Width="2*" />
               <ColumnDefinition Width="8*"/>
               <ColumnDefinition Width="5*"/>
               <ColumnDefinition Width="5*"/>
           </Grid.ColumnDefinitions>
           <Grid Grid.Column="0" x:Name="HumidifyEventLogCol0"/>
           <Grid Grid.Column="1" x:Name="HumidifyEventLogCol1"/>
           <Grid Grid.Column="2" x:Name="HumidifyEventLogCol2"/>
           <Grid Grid.Column="3" x:Name="HumidifyEventLogCol3"/>
           <Grid Grid.Column="3" x:Name="HumidifyEventLogCol4"/>
       </Grid>
   
       <ListView Name="HumidifyEventLog" Style="{StaticResource ListViewStyle}" ItemContainerStyle="{StaticResource ResourceKey=ListViewItemStyle}">
           <ListView.View>
               <GridView ColumnHeaderContainerStyle="{StaticResource GridViewColumnHeaderStyle}">
                   <GridViewColumn Header="设备" Width="{Binding ElementName=HumidifyEventLogCol0,Path=ActualWidth}" DisplayMemberBinding="{Binding Path=Source, Converter={StaticResource ChamberNameEnToCn}}"/>
                   <GridViewColumn Header="故障ID" Width="{Binding ElementName=HumidifyEventLogCol1,Path=ActualWidth}" DisplayMemberBinding="{Binding Path=Code}"/>
                   <GridViewColumn Header="故障描述" Width="{Binding ElementName=HumidifyEventLogCol2,Path=ActualWidth}" DisplayMemberBinding="{Binding Path=Remark}"/>
                   <GridViewColumn Header="故障开始时间" Width="{Binding ElementName=HumidifyEventLogCol3,Path=ActualWidth}" DisplayMemberBinding="{Binding Path=StartTime}"/>
                   <GridViewColumn Header="故障结束时间" Width="{Binding ElementName=HumidifyEventLogCol4,Path=ActualWidth}" DisplayMemberBinding="{Binding Path=EndTime}"/>
               </GridView>
           </ListView.View>
       </ListView>
   </Grid>