SamplePreSystem-CS/SamplePreSystem.UI/Views/QueryManager/SampleQueryView.xaml

<UserControl
    x:Class="SamplePre.UIWpf.QueryManager.SampleQueryView"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:local="clr-namespace:SamplePre.UIWpf.QueryManager"
    xmlns:materialDesign="http://materialdesigninxaml.net/winfx/xaml/themes"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    d:DesignHeight="450"
    d:DesignWidth="800"
    Background="White"
    mc:Ignorable="d">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="50" />
            <RowDefinition Height="*" />

        </Grid.RowDefinitions>

        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition />
                <ColumnDefinition />
            </Grid.ColumnDefinitions>

            <StackPanel Margin="10,0" Orientation="Horizontal">

                <TextBlock VerticalAlignment="Center" Text="时间：" />
                <DatePicker
                    Width="140"
                    Height="40"
                    Margin="10,0"
                    HorizontalContentAlignment="Center"
                    VerticalContentAlignment="Center"
                    SelectedDate="{Binding StartDate}" />
                <TextBlock VerticalAlignment="Center" Text="—" />
                <DatePicker
                    Width="140"
                    Height="40"
                    Margin="10,0"
                    HorizontalContentAlignment="Center"
                    VerticalContentAlignment="Center"
                    SelectedDate="{Binding EndDate}" />

            </StackPanel>

            <StackPanel
                Grid.Column="1"
                Margin="20,0"
                HorizontalAlignment="Right"
                VerticalAlignment="Center"
                Orientation="Horizontal">
                <Button
                    x:Name="btnFindSample"
                    Width="100"
                    Height="30"
                    Margin="3"
                    Command="{Binding GetDataCommand}"
                    Content="查 询" />
                <Button
                    x:Name="btnExport"
                    Width="100"
                    Height="30"
                    Margin="3"
                    Command="{Binding ExportExcelCommand}"
                    Content="导 出" />
            </StackPanel>


        </Grid>



        <Border
            Grid.Row="1"
            Margin="5"
            BorderBrush="LightGray"
            BorderThickness="1">
            <Grid>
                <Grid.RowDefinitions>
                    <RowDefinition Height="30" />
                    <RowDefinition Height="*" />
                </Grid.RowDefinitions>
                <StackPanel
                    Grid.Row="0"
                    Height="30"
                    VerticalAlignment="Center"
                    Background="#E6E6E6">
                    <TextBlock
                        Margin="10,0"
                        Padding="6"
                        HorizontalAlignment="Left"
                        VerticalAlignment="Center"
                        Text="样品列表" />
                </StackPanel>

                <DataGrid
                    x:Name="dg_sample"
                    Grid.Row="1"
                    AutoGenerateColumns="False"
                    Background="White"
                    CanUserAddRows="False"
                    CanUserSortColumns="True"
                    FrozenColumnCount="1"
                    HorizontalScrollBarVisibility="Auto"
                    IsReadOnly="True"
                    ItemsSource="{Binding SampleList}"
                    SelectedItem="{Binding SelectSample}"
                    SelectionMode="Extended"
                    VerticalScrollBarVisibility="Auto">
                    <DataGrid.Columns>
                        <DataGridTextColumn
                            Width="*"
                            Binding="{Binding qrcode}"
                            Header="二维码" />
                        <DataGridTextColumn
                            Width="*"
                            Binding="{Binding item_name}"
                            Header="样品名称" />
                        <DataGridTextColumn
                            Width="*"
                            Binding="{Binding standrad_id}"
                            Header="标准ID" />
                        <DataGridTextColumn
                            Width="*"
                            Binding="{Binding standrad}"
                            Header="标准名称" />
                        <DataGridTextColumn
                            Width="*"
                            Binding="{Binding input_user}"
                            Header="录入人员" />
                        <DataGridTextColumn
                            Width="*"
                            Binding="{Binding input_date}"
                            Header="录入日期" />
                        <DataGridTextColumn
                            Width="*"
                            Binding="{Binding bach_no}"
                            Header="批号" />

                    </DataGrid.Columns>
                </DataGrid>
            </Grid>
        </Border>


    </Grid>
</UserControl>