WPF控件TEXTBOX增加输入限制，并且单个界面只需设置一次

<Grid x:Name="Grid_Form">
                    <Grid.ColumnDefinitions>
                        <ColumnDefinition Width="0.2*"/>
                        <ColumnDefinition Width="0.7*"/>
                        <ColumnDefinition Width="0.1*"/>

                    </Grid.ColumnDefinitions>
                    <Grid.RowDefinitions>
                        <RowDefinition/>
                        <RowDefinition/>
                        <RowDefinition/>
                        <RowDefinition/>
                        <RowDefinition/>
                        <RowDefinition/>
                       


                    </Grid.RowDefinitions>
                    <TextBlock Grid.Row="0" Grid.Column="0" Style="{StaticResource TextBlock_Grid}" Text="{Binding LanguagePack.UM_UserNoLabel,FallbackValue=用户编号：}" />
                    <TextBox Name="UserNoText" Style="{StaticResource textbox_Defalut}"  Grid.Row="0" Grid.Column="1" Width="390" Height="35"    Text="{Binding Model.UserCode}"
                         Py:ControlProperty.IsRequired="True" 
                         Py:ControlProperty.ErrorMsg="用户编号为必填项！" MaxLength="50"/>
                    <Label Margin="0,9,0,0" Content="*" FontSize="30" Foreground="Red" Grid.Row="0" Grid.Column="2" HorizontalAlignment="Left" VerticalAlignment="Center" VerticalContentAlignment="Center"/>

                    <TextBlock Grid.Row="1" Grid.Column="0" Style="{StaticResource TextBlock_Grid}" Text="{Binding LanguagePack.UM_UserNameLabel,FallbackValue=用户名称：}" />
                    <TextBox Name="UserNameText" Style="{StaticResource textbox_Defalut}" Grid.Row="1" Grid.Column="1" Width="390"   Text="{Binding Model.UserName}"
                             Py:ControlProperty.IsRequired="True"
                         Py:ControlProperty.ErrorMsg="用户名称为必填项！" MaxLength="50"/>
                    <Label Margin="0,9,0,0" Content="*" FontSize="30" Foreground="Red" Grid.Row="1" Grid.Column="2" HorizontalAlignment="Left" VerticalAlignment="Center" VerticalContentAlignment="Center"/>

                    <TextBlock Grid.Row="2" Grid.Column="0" Style="{StaticResource TextBlock_Grid}" Text="{Binding LanguagePack.UM_UserRoleLabel,FallbackValue=职      务：}"/>
                    <ComboBox Name="RoleComBox" Style="{StaticResource ComboBox_Grid}" Grid.Row="2" Grid.Column="1" Width="390" VerticalAlignment="Center" HorizontalAlignment="Center"  SelectedValue="{Binding Model.Role}"/>
                    <Label Margin="0,9,0,0" Content="*" FontSize="30" Foreground="Red" Grid.Row="2" Grid.Column="2" HorizontalAlignment="Left" VerticalAlignment="Center" VerticalContentAlignment="Center"/>

                    <TextBlock Grid.Row="3" Grid.Column="0" Style="{StaticResource TextBlock_Grid}" Text="{Binding LanguagePack.UM_UserCardIdLabel,FallbackValue=身份证号：}"/>
                    <TextBox Name="CIDText" Style="{StaticResource textbox_Defalut}"  Grid.Row="3" Grid.Column="1" Width="390" Margin="0,10,0,9"  Text="{Binding Model.CardNo}"  MaxLength="28"
                             Py:ControlProperty.TB_Type="Int"/>
                    <!--<Label Margin="0,9,0,0" Content="*" FontSize="30" Foreground="Red" Grid.Row="2" Grid.Column="2" HorizontalAlignment="Left" VerticalAlignment="Center" VerticalContentAlignment="Center"/>-->

                    <TextBlock Grid.Row="4" Grid.Column="0" Style="{StaticResource TextBlock_Grid}" Text="{Binding LanguagePack.UM_UserTelLabel,FallbackValue=联系电话：}" />
                    <TextBox Name="TelText" Style="{StaticResource textbox_Defalut}" Grid.Row="4" Grid.Column="1" Width="390" Margin="0,10,0,9"   Text="{Binding Model.TEL}"/>

                    <TextBlock Grid.Row="5" Grid.Column="0" Style="{StaticResource TextBlock_Grid}" Text="{Binding LanguagePack.UM_UserEmileLabel,FallbackValue=邮箱地址：}" />
                    <TextBox Name="EmText" Style="{StaticResource textbox_Defalut}" Grid.Row="5" Grid.Column="1" Width="390" Margin="0,10,0,9"   Text="{Binding Model.Email}"/>


                </Grid>

后台代码

this.Grid_Form.AddHandler(TextBox.PreviewKeyDownEvent, new KeyEventHandler(CommonUI.TextBoxKeyDown));



        /// <summary>
        /// 文件框输入限制
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public static void TextBoxKeyDown(object sender, KeyEventArgs e)
        {
            TextBox txt = (TextBox)e.OriginalSource;
            TextBoxType textBoxType = ControlProperty.GetTB_Type(txt);
            if (textBoxType != TextBoxType.String)
            {
                switch (textBoxType)
                {
                    case TextBoxType.Double:
                        if (e.Key == Key.OemPeriod || e.Key == Key.Decimal)
                        {
                            if (txt.Text.Contains("."))
                            {
                                e.Handled = true;//不可输入
                            }
                        }
                        else if (!((e.Key >= Key.D0 && e.Key <= Key.D9)             //大键盘0-9
               || (e.Key >= Key.NumPad0 && e.Key <= Key.NumPad9)   //小键盘0-9 
               || e.Key == Key.Delete || e.Key == Key.Enter
               || e.Key == Key.Back || e.Key == Key.Tab
               || e.Key == Key.Right || e.Key == Key.Left))
                        {
                            e.Handled = true;//不可输入
                        }
                        break;
                    case TextBoxType.Int:
                        if (!((e.Key >= Key.D0 && e.Key <= Key.D9)             //大键盘0-9
               || (e.Key >= Key.NumPad0 && e.Key <= Key.NumPad9)   //小键盘0-9 
               || e.Key == Key.Delete || e.Key == Key.Enter
               || e.Key == Key.Back || e.Key == Key.Tab
               || e.Key == Key.Right || e.Key == Key.Left))
                        {
                            e.Handled = true;//不可输入
                        }
                        break;
                }
            }

        }

"Grid_Form"为前端grid定义的Name,"TextBox.PreviewKeyDownEvent"要添加的事件，"new KeyEventHandler"不同事件，NEW不同的事件处理。
本文参考自https://www.cnblogs.com/YYkun/p/6871736.html