Xamarin Forms: Как добавить просмотрщик прокрутки на всю страницу в uwp

Question

Привет, друзья! Я хочу добавить средство просмотра с прокруткой на всю страницу, когда пользователь восстанавливает вниз или уменьшает высоту или ширину приложения, после чего следует включить средство просмотра с прокруткой. так что пользователь может перемещать форму с помощью scroll-viewer. Заранее спасибо.

при прохождении с помощью средства просмотра прокрутки не включается при восстановлении вниз или уменьшении высоты приложения

<ScrollViewer>
<Grid HorizontalAlignment="Stretch" Height="1000" Margin="0,0,0,0" 
VerticalAlignment="Top">
    <Grid.ColumnDefinitions>
        <ColumnDefinition Width="7*"/>
        <ColumnDefinition Width="10*"/>
        <ColumnDefinition Width="27*"/>
        <ColumnDefinition Width="19*"/>
        <ColumnDefinition Width="38*"/>
        <ColumnDefinition Width="40*"/>
        <ColumnDefinition Width="57*"/>
        <ColumnDefinition Width="38*"/>
        <ColumnDefinition Width="56*"/>
        <ColumnDefinition Width="8*"/>
    </Grid.ColumnDefinitions>
    <Grid.RowDefinitions>
        <RowDefinition Height="18*"/>
        <RowDefinition Height="9*"/>
        <RowDefinition Height="3*"/>
        <RowDefinition Height="18*"/>
        <RowDefinition Height="12*"/>
        <RowDefinition Height="12*"/>
        <RowDefinition Height="8*"/>
        <RowDefinition Height="10*"/>
        <RowDefinition Height="5*"/>
        <RowDefinition Height="7*"/>
        <RowDefinition Height="7*"/>
        <RowDefinition Height="11*"/>
        <RowDefinition Height="16*"/>
        <RowDefinition Height="10*"/>
        <RowDefinition Height="54*"/>
    </Grid.RowDefinitions>

        <TextBlock FontFamily="{StaticResource inventorySemiBoldFont}" Text="Personal Information" FontSize="16" FontWeight="SemiBold" Margin="43,14,44,45" Grid.Row="3" Grid.Column="1" Grid.ColumnSpan="3" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"  />
    <TextBlock FontFamily="{StaticResource inventoryRegularFont}" Text="Prefix" Foreground="#414042" FontSize="14" FontWeight="SemiLight" Margin="43,56,37,3" Grid.Column="1" Grid.Row="3" Grid.ColumnSpan="2" HorizontalAlignment="Stretch"    />


    <Border extensions:Mouse.Cursor="Hand" Margin="49,51,16,9" Grid.Column="3" Grid.Row="3" Grid.ColumnSpan="2"  BorderThickness="1" BorderBrush="#E1E1E1"  CornerRadius="5" HorizontalAlignment="Stretch" Height="30" >
        <ComboBox Padding="8 0 0 0" extensions:Mouse.Cursor="Hand" Width="200" BorderBrush="Transparent"  BorderThickness="0" FontWeight="Light" FontSize="13" FontFamily="{StaticResource inventoryRegularFont}" UseLayoutRounding="True" TabIndex="1" Name="userPrefix" PlaceholderText="Select Prefix" PlaceholderForeground="#414042" Grid.Column="3" Grid.Row="3" Grid.ColumnSpan="2" HorizontalAlignment="Center" VerticalAlignment="Stretch" Margin="0,0,0,0" >
            <x:String>Mr</x:String>
            <x:String>Mrs</x:String>
            <x:String>Miss</x:String>
        </ComboBox>
    </Border>



    <TextBlock FontFamily="{StaticResource inventoryRegularFont}" Padding="0"  Text="First Name" Foreground="#414042" FontSize="14" FontWeight="SemiLight" Margin="64,51,0,10" Grid.Column="5" Grid.Row="3"  />
    <Border extensions:Mouse.Cursor="Hand" Height="30"  BorderThickness="1" BorderBrush="#E1E1E1"  CornerRadius="5" Width="220" Margin="21,50,0,8" Grid.Column="6" Grid.Row="3" HorizontalAlignment="Left" VerticalAlignment="Stretch" >
        <TextBox extensions:Mouse.Cursor="Hand" MaxLength="20" Padding="6" BorderBrush="Transparent" BorderThickness="0" TabIndex="2" FontSize="13" FontFamily="{StaticResource inventoryRegularFont}" PlaceholderText="Enter First Name" Width="220"   Name="userFirstName" Text="" Grid.Column="6" Grid.Row="3" HorizontalAlignment="Center" VerticalContentAlignment="Center" TextChanging="UserFirstName_TextChanging" Margin="0,0,0,-1" />
    </Border>
    <TextBlock Text=""   Name="FirstNameError" FontSize="11" Foreground="red" Margin="21,82,0,54" Grid.Column="6" Grid.Row="3" HorizontalAlignment="Left" Width="180" Grid.RowSpan="2"/>
 <TextBlock FontFamily="{StaticResource inventoryRegularFont}" Padding="0"  Text="First Name" Foreground="#414042" FontSize="14" FontWeight="SemiLight" Margin="64,51,0,10" Grid.Column="5" Grid.Row="3"  />
    <Border extensions:Mouse.Cursor="Hand" Height="30"  BorderThickness="1" BorderBrush="#E1E1E1"  CornerRadius="5" Width="220" Margin="21,50,0,8" Grid.Column="6" Grid.Row="3" HorizontalAlignment="Left" VerticalAlignment="Stretch" >
        <TextBox extensions:Mouse.Cursor="Hand" MaxLength="20" Padding="6" BorderBrush="Transparent" BorderThickness="0" TabIndex="2" FontSize="13" FontFamily="{StaticResource inventoryRegularFont}" PlaceholderText="Enter First Name" Width="220"   Name="userFirstName" Text="" Grid.Column="6" Grid.Row="3" HorizontalAlignment="Center" VerticalContentAlignment="Center" TextChanging="UserFirstName_TextChanging" Margin="0,0,0,-1" />
    </Border>
    <TextBlock Text=""   Name="FirstNameError" FontSize="11" Foreground="red" Margin="21,82,0,54" Grid.Column="6" Grid.Row="3" HorizontalAlignment="Left" Width="180" Grid.RowSpan="2"/>

    <TextBlock FontFamily="{StaticResource inventoryRegularFont}" Padding="0" Text="Middle Name" Foreground="#414042" FontSize="14" FontWeight="SemiLight" Margin="44,48,7,6" Grid.Column="7" Grid.Row="3"  />
    <Border extensions:Mouse.Cursor="Hand" Margin="38,46,22,14" Grid.Column="8" Grid.Row="3"  Height="30" BorderThickness="1" BorderBrush="#E1E1E1" CornerRadius="5" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
        <TextBox extensions:Mouse.Cursor="Hand" MaxLength="20" Padding="8 6 6 6" BorderBrush="Transparent" BorderThickness="0" FontSize="13" FontFamily="{StaticResource inventoryRegularFont}" TabIndex="3" PlaceholderText="Enter Middle Name" Text=""  Name="userMiddleName" Grid.Column="8" Grid.Row="3" HorizontalAlignment="Center" TextChanging="UserMiddleName_TextChanging" Margin="0,0,0,-4" Width="200" />
    </Border>

    <TextBlock Text="*" Foreground="Red" Margin="40,12,120,19" Grid.Column="1" Grid.Row="4" Grid.ColumnSpan="2"/>
    <TextBlock FontFamily="{StaticResource inventoryRegularFont}" Padding="5,0,0,0" Text="Last Name" Foreground="#414042" FontSize="14" FontWeight="SemiLight" Margin="46,16,16,15" Grid.Column="1" Grid.Row="4" Grid.ColumnSpan="2"  />
    <Border extensions:Mouse.Cursor="Hand" Margin="49,18,16,12" Grid.Column="3" Grid.Row="4" Grid.ColumnSpan="2"   BorderThickness="1" BorderBrush="#E1E1E1"  CornerRadius="5" Height="30" HorizontalAlignment="Stretch" >
        <TextBox  extensions:Mouse.Cursor="Hand" MaxLength="20" Padding="6" BorderBrush="Transparent"  BorderThickness="0" FontSize="13" TabIndex="4" FontFamily="{StaticResource inventoryRegularFont}" PlaceholderText="Enter Last Name" Height="30" Text="" Name="userLastName"  Grid.Column="3" Grid.Row="4" Grid.ColumnSpan="2" HorizontalAlignment="Stretch"  RequestedTheme="Default" UseLayoutRounding="False" TextChanging="UserLastName_TextChanging" Margin="0,0,-2,-4" />
    </Border>
    <TextBlock Text="" Name="LastNameError" FontSize="11" Foreground="red" Margin="49,49,0,55" Grid.Column="3" Grid.Row="4" HorizontalAlignment="Left" Width="180" Grid.ColumnSpan="2" RenderTransformOrigin="0.5,0.5" Grid.RowSpan="2"/>



    <TextBlock FontFamily="{StaticResource inventoryRegularFont}" Text="Gender" Foreground="#414042" FontSize="14" FontWeight="SemiLight" Margin="57,19,26,17" Grid.Column="5" Grid.Row="4"  />
    <Border extensions:Mouse.Cursor="Hand" Margin="21,10,0,14" Grid.Column="6" Grid.Row="4" HorizontalAlignment="Left" VerticalAlignment="Stretch" Height="30" BorderThickness="1" BorderBrush="#E1E1E1" CornerRadius="5" Width="220">
        <ComboBox Padding="5 0 0 0" extensions:Mouse.Cursor="Hand" BorderBrush="Transparent" BorderThickness="0" FontSize="13" FontWeight="Light" FontFamily="{StaticResource inventoryRegularFont}" AllowDrop="True"   Name="userGender" TabIndex="5"  Header="" PlaceholderForeground="#414042" PlaceholderText="Select Gender" HorizontalAlignment="Left" VerticalAlignment="Bottom" Grid.Column="6"  Grid.Row="4" Width="220" Height="38" Margin="0,0,0,-1">
            <x:String>Male</x:String>
            <x:String>Female</x:String>
            <x:String>Prefer not to say</x:String>
        </ComboBox>
    </Border>

    <TextBlock Text="*" Foreground="Red" Margin="44,10,0,23" Grid.Column="7" Grid.Row="4" HorizontalAlignment="Left" Width="13" VerticalAlignment="Stretch"/>
    <TextBlock Text="Email" FontFamily="{StaticResource inventoryRegularFont}" Foreground="#414042" FontSize="14" FontWeight="SemiLight" Margin="51,16,31,17" Grid.Column="7" Grid.Row="4" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"  />
    <Border extensions:Mouse.Cursor="Hand" Margin="38,14,22,16" Grid.Column="8" Grid.Row="4" HorizontalAlignment="Stretch" Height="30" BorderThickness="1" BorderBrush="#E1E1E1" CornerRadius="5">
        <TextBox extensions:Mouse.Cursor="Hand" MaxLength="50" Padding="6" BorderBrush="Transparent" BorderThickness="0" FontSize="13" FontFamily="{StaticResource inventoryRegularFont}" PlaceholderText="Enter Email" TabIndex="6" Text="" Height="30" Name="userEmail"  Grid.Column="8" Grid.Row="4" HorizontalAlignment="Stretch" TextChanging="UserEmail_TextChanging" Margin="0,0,-2,-4" VerticalAlignment="Stretch" />
    </Border>
    <TextBlock Text="" Name="EmailError" FontSize="11" Foreground="red" Margin="38,47,0,55" Grid.Column="8" Grid.Row="4" HorizontalAlignment="Left" Width="180" Grid.RowSpan="2"/>

    <TextBlock Text="*" Foreground="Red" Margin="41,10,0,23" Grid.Column="1" Grid.Row="5" HorizontalAlignment="Left" Width="40" Grid.ColumnSpan="2" VerticalAlignment="Stretch"/>
    <TextBlock Text="Password" FontFamily="{StaticResource inventoryRegularFont}" Padding="5 0 0 0" Foreground="#414042" FontSize="14" FontWeight="SemiLight" Margin="46,14,57,19" Grid.Column="1" Grid.Row="5" Grid.ColumnSpan="2" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"  />
    <!--<PasswordBox  TabIndex="7" Height=" 20" Width=" 180"    Name="userPassword" Grid.ColumnSpan="2" Margin="49,12,0,16" Grid.Column="3" Grid.Row="5" HorizontalAlignment="Left" />-->
    <Border extensions:Mouse.Cursor="Hand" Margin="49,13,16,17"  Grid.Column="3" Grid.Row="5" HorizontalAlignment="Stretch" Height="30" BorderThickness="1" BorderBrush="#E1E1E1" CornerRadius="5" Grid.ColumnSpan="2">
        <TextBox extensions:Mouse.Cursor="Hand" MaxLength="20" Padding="6" BorderBrush="Transparent" BorderThickness="0" FontSize="13" PlaceholderText="Enter Password" FontFamily="{StaticResource inventoryRegularFont}" TabIndex="7" Text="" Height=" 20"   Name="userPassword" Grid.ColumnSpan="2" Grid.Column="3" Grid.Row="5" HorizontalAlignment="Stretch" TextChanging="UserPassword_TextChanging" Margin="0,-2,-1,-2" VerticalAlignment="Stretch" />
    </Border>
    <TextBlock TextWrapping="wrap" Text="" Name="PasswordError" FontSize="11" Foreground="red" Margin="49,44,0,25" Grid.Column="3" Grid.Row="5" HorizontalAlignment="Left" Width="180" Grid.ColumnSpan="2" Grid.RowSpan="2" />
    <TextBlock FontFamily="{StaticResource inventoryRegularFont}" Text="Select Role" Foreground="#414042" FontSize="14" FontWeight="SemiLight" Margin="68,19,277,7" Grid.Column="5" Grid.Row="5" Grid.ColumnSpan="2"  />
    <Border extensions:Mouse.Cursor="Hand"  Margin="21,10,0,13" Grid.Column="6" Grid.Row="5" HorizontalAlignment="Left" Height="30" BorderThickness="1" BorderBrush="#E1E1E1" CornerRadius="5" Width="220" Grid.ColumnSpan="2" VerticalAlignment="Stretch">
        <ComboBox Padding="5 0 0 0" extensions:Mouse.Cursor="Hand" SelectedValuePath="rid" BorderBrush="Transparent" BorderThickness="0" FontSize="13" FontWeight="Light" FontFamily="{StaticResource inventoryRegularFont}" TabIndex="8"  Name="userRoleId" Header="" PlaceholderForeground="#414042" PlaceholderText="Select Role" Width="220" HorizontalAlignment="Left" VerticalAlignment="Stretch"  Grid.Column="6" Grid.Row="5" GotFocus="UserRoleId_GotFocus" Margin="0,-10,0,-2">
            <ComboBox.ItemTemplate>
                <DataTemplate>
                    <TextBlock Name ="roleName" Text="{Binding rname}" Tag="{Binding rid}"/>
                </DataTemplate>
            </ComboBox.ItemTemplate>
        </ComboBox>
    </Border>
    <TextBlock Text="" Name="RoleError" FontSize="11" Foreground="red" Margin="21,52,0,31" Grid.Column="6" Grid.Row="5" HorizontalAlignment="Left" Width="180" Grid.RowSpan="2" VerticalAlignment="Stretch"/>

    <TextBlock Text="*" Foreground="Red" Margin="44,13,0,20" Grid.Column="7" Grid.Row="5" HorizontalAlignment="Left" Width="13"/>
    <TextBlock Text="Organization" FontFamily="{StaticResource inventoryRegularFont}" Foreground="#414042" FontSize="14" FontWeight="SemiLight" Margin="51,19,31,14" Grid.Column="7" Grid.Row="5"  />
    <Border extensions:Mouse.Cursor="Hand"  Margin="38,13,22,17" Grid.Column="8" Grid.Row="5" HorizontalAlignment="Stretch" Height="30" BorderThickness="1" BorderBrush="#E1E1E1" CornerRadius="5">
        <ComboBox Padding="5 0 0 0" extensions:Mouse.Cursor="Hand" SelectedValuePath="rid" BorderBrush="Transparent" BorderThickness="0" FontSize="13" FontWeight="Light" FontFamily="{StaticResource inventoryRegularFont}" TabIndex="8"  Name="cmbOrganization" Header="" PlaceholderForeground="#414042" PlaceholderText="Select Organization" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"  Grid.Column="6" Grid.Row="5"  Margin="-1,-13,-1,1" GotFocus="CmbOrganization_GotFocus">
            <ComboBox.ItemTemplate>
                <DataTemplate>
                    <TextBlock Name ="OrganisationName" Text="{Binding name}" Tag="{Binding id}"/>
                </DataTemplate>
            </ComboBox.ItemTemplate>
        </ComboBox>
    </Border>
    <TextBlock Text="" Name="OrganizationError" FontSize="11" Foreground="red" Margin="40,48,0,34" Grid.Column="8" Grid.Row="5" HorizontalAlignment="Left" Width="180" Grid.RowSpan="2" VerticalAlignment="Stretch"/>



    <TextBlock FontFamily="{StaticResource inventorySemiBoldFont}" Padding="0" Text="Contact Information" Foreground="#414042" FontSize="16" FontWeight="SemiBold" Margin="43,6,50,10" Grid.Column="1" Grid.Row="6" Grid.ColumnSpan="3"  />

    <TextBlock FontFamily="{StaticResource inventoryRegularFont}" Padding="0" Text="Street Address" Foreground="#414042" FontSize="14" FontWeight="SemiLight" Margin="43,13,38,17" Grid.Column="1" Grid.Row="8" Grid.RowSpan="2" Grid.ColumnSpan="2"  />
    <Border extensions:Mouse.Cursor="Hand" Margin="49,18,16,12" Grid.ColumnSpan="2" Grid.RowSpan="2" Grid.Column="3" Grid.Row="8" HorizontalAlignment="Stretch" Height="30" BorderThickness="1" BorderBrush="#E1E1E1" CornerRadius="5">
        <TextBox extensions:Mouse.Cursor="Hand" MaxLength="100" Padding="8 6 6 6" BorderBrush="Transparent" BorderThickness="0" FontSize="13" FontFamily="{StaticResource inventoryRegularFont}" PlaceholderText="Enter Street Address" TabIndex="12" Name="userAddress" Text="" Grid.ColumnSpan="2" Grid.Column="3" Grid.Row="8" HorizontalAlignment="Center" Width="201" Grid.RowSpan="2" Margin="0,0,0,-4" />
    </Border>


    <TextBlock FontFamily="{StaticResource inventoryRegularFont}" Text="City" Foreground="#414042" FontSize="14" FontWeight="SemiLight" Margin="44,14,32,5" Grid.Column="7" Grid.Row="7"  />
    <Border extensions:Mouse.Cursor="Hand" Grid.Column="8" Grid.Row="7" Margin="38,10,22,10"  HorizontalAlignment="Stretch" Height="30" BorderThickness="1" BorderBrush="#E1E1E1" CornerRadius="5">
        <ComboBox Padding="5 0 0 0" extensions:Mouse.Cursor="Hand" BorderBrush="Transparent" BorderThickness="0" FontSize="13" TabIndex="11"  FontFamily="{StaticResource inventoryRegularFont}"   Header="" Name="userCity" ItemsSource="{x:Bind CityList}" PlaceholderText="Select City" PlaceholderForeground="#414042" FontWeight="Light" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Grid.Column="8" Grid.Row="7"  Tapped="LoadCities" Margin="0,-6,-2,-2">
            <ComboBox.ItemTemplate>
                <DataTemplate x:DataType="local:CityData" >
                    <TextBlock Name="{x:Bind cityId}" Text="{x:Bind cityName}" />
                </DataTemplate>
            </ComboBox.ItemTemplate>
        </ComboBox>
    </Border>
    <TextBlock Text=""   Name="CityError" FontSize="11" Foreground="red" Margin="44,44,0,17" Grid.Column="8" Grid.Row="7" HorizontalAlignment="Left" Width="183" Grid.RowSpan="2" VerticalAlignment="Stretch"  />




    <TextBlock FontFamily="{StaticResource inventoryRegularFont}" Padding="0" Text="State" Foreground="#414042" FontSize="14" FontWeight="SemiLight" Margin="64,13,12,24" Grid.Column="5" Grid.Row="7" Grid.RowSpan="2"  />
    <Border extensions:Mouse.Cursor="Hand" Margin="21,10,0,10" Grid.Column="6" Grid.Row="7"  HorizontalAlignment="Left" Height="30" BorderThickness="1" BorderBrush="#E1E1E1" CornerRadius="5" Width="220" VerticalAlignment="Stretch">
        <ComboBox Padding="5 0 0 0" extensions:Mouse.Cursor="Hand" BorderBrush="Transparent" BorderThickness="0" FontSize="13" FontWeight="Light" FontFamily="{StaticResource inventoryRegularFont}" TabIndex="10"  Header="" Width=" 220" Name="userState" ItemsSource="{x:Bind StateList}" PlaceholderText="Select State" PlaceholderForeground="#414042" HorizontalAlignment="Left" VerticalAlignment="Stretch" Grid.Column="6" Grid.Row="7" SelectionChanged="GetCityList" Tapped="LoadStates" Margin="0,-11,0,-2" >
            <ComboBox.ItemTemplate>
                <DataTemplate x:DataType="local:StateData" >
                    <TextBlock Name="{x:Bind StateId}" Text="{x:Bind StateName}" />
                </DataTemplate>
            </ComboBox.ItemTemplate>
        </ComboBox>
    </Border>

    <TextBlock FontFamily="{StaticResource inventoryRegularFont}" Padding="0" Text="Middle Name" Foreground="#414042" FontSize="14" FontWeight="SemiLight" Margin="44,48,7,6" Grid.Column="7" Grid.Row="3"  />
    <Border extensions:Mouse.Cursor="Hand" Margin="38,46,22,14" Grid.Column="8" Grid.Row="3"  Height="30" BorderThickness="1" BorderBrush="#E1E1E1" CornerRadius="5" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
        <TextBox extensions:Mouse.Cursor="Hand" MaxLength="20" Padding="8 6 6 6" BorderBrush="Transparent" BorderThickness="0" FontSize="13" FontFamily="{StaticResource inventoryRegularFont}" TabIndex="3" PlaceholderText="Enter Middle Name" Text=""  Name="userMiddleName" Grid.Column="8" Grid.Row="3" HorizontalAlignment="Center" TextChanging="UserMiddleName_TextChanging" Margin="0,0,0,-4" Width="200" />
    </Border>
<TextBlock  Text="Country" FontFamily="{StaticResource inventoryRegularFont}" Foreground="#414042" FontSize="14" FontWeight="SemiLight" Margin="43,10,39,14" Grid.Column="1" Grid.Row="7" Grid.ColumnSpan="2"  />
    <Border extensions:Mouse.Cursor="Hand" Grid.Column="3" Margin="49,14,16,6" Grid.Row="7" HorizontalAlignment="Stretch" Height="30" BorderThickness="1" BorderBrush="#E1E1E1" CornerRadius="5" Grid.ColumnSpan="2">
        <ComboBox Padding="5 0 0 0" extensions:Mouse.Cursor="Hand" BorderBrush="Transparent" BorderThickness="0" FontSize="13" FontWeight="Light" FontFamily="{StaticResource inventoryRegularFont}" TabIndex="9"   Name="userCountry" Canvas.ZIndex="1" ItemsSource="{x:Bind CountryList}"  PlaceholderText="Select Country" PlaceholderForeground="#414042" Grid.ColumnSpan="2" HorizontalAlignment="Stretch"  VerticalAlignment="Stretch" Grid.Column="3" Grid.Row="7" SelectionChanged="GetStateList" Tapped="ClearError" Margin="0,0,-2,-2">
            <ComboBox.ItemTemplate>
                <DataTemplate x:DataType="local:CountryData">
                    <TextBlock Name="{x:Bind CountryId}" Text="{x:Bind CountryName}" />
                </DataTemplate>
            </ComboBox.ItemTemplate>
        </ComboBox>
    </Border>

    <TextBlock Text="" Name="CountryError" FontSize="11" Foreground="red" Grid.Column="3" Margin="46,42,0,17" Grid.Row="7"  HorizontalAlignment="Left" Width="180" Grid.ColumnSpan="2" RenderTransformOrigin="0.5,0.5" Grid.RowSpan="2" VerticalAlignment="Stretch"/>

    <TextBlock Text=""  Name="StatesError" FontSize="11" Foreground="red" Margin="25,41,83,17" Grid.Column="6" Grid.Row="7" Grid.RowSpan="2"  />


    <TextBlock FontFamily="{StaticResource inventoryRegularFont}" Text="ZIP" Foreground="#414042" FontSize="14" FontWeight="SemiLight" Margin="64,17,57,16" Grid.Column="5" Grid.Row="8" Grid.RowSpan="2" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"  />
    <Border extensions:Mouse.Cursor="Hand" Margin="21,17,0,11" Grid.Column="6" Grid.Row="8" HorizontalAlignment="Left" Height="30" BorderThickness="1" BorderBrush="#E1E1E1" CornerRadius="5" Width="220" Grid.RowSpan="2" VerticalAlignment="Stretch">
        <TextBox extensions:Mouse.Cursor="Hand" MaxLength="6" Padding="6" BorderBrush="Transparent" BorderThickness="0" FontSize="13" FontFamily="{StaticResource inventoryRegularFont}" InputScope="Number" PlaceholderText="Enter ZIP Code" TabIndex="13" Height="30"  Width="220" Name="userZip" Text="" Grid.Column="6" Grid.Row="8" HorizontalAlignment="Left" Grid.RowSpan="2" TextChanging="UserZip_TextChanging"  />
    </Border>
    <TextBlock FontFamily="{StaticResource inventoryRegularFont}" Padding="0" Text="Phone Number" Foreground="#414042" FontSize="14" FontWeight="SemiLight" Margin="44,16,37,21" Grid.Column="7" Grid.Row="8" Grid.RowSpan="2" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"  />
    <Border extensions:Mouse.Cursor="Hand" Margin="38,18,22,12" Grid.Column="8" Grid.Row="8" HorizontalAlignment="Stretch" Height="30" BorderThickness="1" BorderBrush="#E1E1E1" CornerRadius="5" Grid.RowSpan="2">
        <TextBox  extensions:Mouse.Cursor="Hand" MaxLength="13" Padding="6" FontSize="13" BorderBrush="Transparent" BorderThickness="0" FontFamily="{StaticResource inventoryRegularFont}"  TabIndex="14" PlaceholderText="Enter Phone Number" Height="30" Name="userPhone" Grid.Column="8" Grid.Row="8" HorizontalAlignment="Stretch" Grid.RowSpan="2" TextChanging="UserPhone_TextChanging" Margin="0,0,-2,-4" />
    </Border>
         <TextBlock FontFamily="{StaticResource inventorySemiBoldFont}" Text="Assign Department" FontSize="16" FontWeight="SemiBold" Grid.ColumnSpan="3" Margin="43,17,72,43" Grid.Column="1" Grid.Row="10" Grid.RowSpan="2" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" />



        <Button extensions:Mouse.Cursor="Hand" Style="{StaticResource  AssignButtonStyle}" Margin="0,18,0,7" FontFamily="{StaticResource inventorySemiBoldFont}" FontSize="13"    TabIndex="15" x:Name="BtnAssign" Background="#00BFF3" HorizontalContentAlignment="Center" VerticalContentAlignment="Center"  BorderBrush="White" BorderThickness="0.1"    Content="ASSIGN" Foreground="White"    HorizontalAlignment="Center" VerticalAlignment="Stretch" Grid.Row="11" Grid.Column="1"  Click="SelectDepartment" Grid.ColumnSpan="2" />


 <ScrollViewer MinWidth =" 1200"    ScrollViewer.VerticalScrollBarVisibility="Visible" ScrollViewer.HorizontalScrollBarVisibility="Visible"  Margin="38,53,0,31" Grid.Row="11" Grid.ColumnSpan="8" Grid.RowSpan="3" Grid.Column="1">
            <controls:WrapPanel MinWidth =" 1200"   Orientation="Horizontal"  ScrollViewer.VerticalScrollBarVisibility="Visible" ScrollViewer.HorizontalScrollBarVisibility="Visible"      Name="SPSelectdedDepartment" Grid.Row="12" Grid.ColumnSpan="8" Grid.RowSpan="2" Grid.Column="1" Width="1310"  MaxWidth ="1357" HorizontalAlignment="Stretch" Margin="0,0,0,0" VerticalAlignment="Stretch" />
    </ScrollViewer>

</Grid>

Answer 1

ScrollViewer позволяет отображать содержимое в меньшей области, чем его фактический размер.Когда содержимое ScrollViewer отображается не полностью, ScrollViewer отображает полосы прокрутки, которые пользователь может использовать для перемещения видимых областей содержимого.Область, которая включает в себя все содержимое ScrollViewer, является экстентом.Видимая область содержимого - это область просмотра.

Пожалуйста, проверьте официальный ScrollViewer документ

ScrollViewer позволяет отображать содержимое в меньшей областичем его фактический размер.Когда содержимое ScrollViewer отображается не полностью, ScrollViewer отображает полосы прокрутки, которые пользователь может использовать для перемещения видимых областей содержимого.Область, которая включает в себя все содержимое ScrollViewer, является экстентом.Видимая область содержимого - это область просмотра.

Таким образом, если размер содержимого больше фактического размера ScrollViewer, отобразятся полосы прокрутки.Я обнаружил, что вы установили высоту сетки как 1000, если ScrollViewer высота меньше 1000, ScrollViewer будет вертикальной прокрутки.Чтобы убедиться, что ScrollViewer заполнить содержимое страницы, вам необходимо установить ScrollViewer VerticalAlignment и HorizontalAlignment как Stretch.

<ScrollViewer  VerticalAlignment="Stretch"  HorizontalAlignment="Stretch" />