WPF继承窗口 或控件

//继承Window类的自定义窗口类
namespace  WPF_Study.Entity
{
   using  ;

   public  class  WindowBase:Window
    {
        private  const  int  Fixed_Width = 540;
        private  const  int  Fixed_Height = 350;

        public  WindowBase() :  base ()
        {
            this .MaxWidth = Fixed_Width;
            this .MaxHeight = Fixed_Height;
            this .MinWidth = Fixed_Width;
            this .MinHeight = Fixed_Height;
        }
    }
}

//继承自定义窗口
//xaml文件
<localEntity:WindowBase x:Class= "WPF_Study.TestWindowBase"
        xmlns= "/winfx/2006/xaml/presentation"
        xmlns:x= "/winfx/2006/xaml"
        xmlns:localEntity= "clr-namespace:WPF_Study.Entity"
        Title= "TestWindowBase"  >
    <Grid>
        <>
            <Style TargetType= "{x:Type Button}" >
                <Setter Property= "Width"  Value= "60" />
                <Setter Property= "Height"  Value= "30" />
                <Setter Property= "Margin"  Value= "5" />
            </Style>
        </>
        <>
            <RowDefinition Height= "40*" />
            <RowDefinition Height= "221*" />
        </>
        <WrapPanel = "0"  = "0" >
            <Button Content= "查询"  x:Name= "btnSearch" ></Button>
            <Button Content= "新增"  x:Name= "btnAdd" ></Button>
            <Button Content= "修改"  x:Name= "btnAmend" ></Button>
            <Button Content= "删除"  x:Name= "btnDelete" ></Button>
        </WrapPanel>
        <DataGrid x:Name= "dataGrid"  AutoGenerateColumns= "False"  = "2"  = "0"  CanUserAddRows= "False" >
            <>
                <DataGridTextColumn Header= "窗口编号"  Binding= "{Binding Win}" />
                <DataGridTextColumn Header= "评价器地址"  Binding= "{Binding Evalutor}" />
                <DataGridTextColumn Header= "条屏地址"  Binding= "{Binding StripeScreen}" />
                <DataGridTextColumn Header= "IP"  Binding= "{Binding IP}" />
                <DataGridTextColumn Header= "注册设备号"  Binding= "{Binding RegNum}" />
                <DataGridTextColumn Header= "描述"  Binding= "{Binding Description}"  Width= "*" />
            </>
        </DataGrid>
    </Grid>
</localEntity:WindowBase>
//对应后台代码
using  WPF_Study.Entity;

namespace  WPF_Study
{
    /// <summary>
    /// Interaction logic for
    /// </summary>
    public  partial  class  TestWindowBase : WindowBase
    {
        public  TestWindowBase()
        {
            InitializeComponent();
        }
    }
}