<UserControl x:Class="QuoteWpf.UcMain"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:QuoteWpf"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">
             //这里使用Height="450 Width="800"就正常
             
    <Grid>
        <DataGrid Name="project" AutoGenerateColumns="False" IsReadOnly="True" ItemsSource="{Binding Projects}"  RowHeight="23">
            <DataGrid.Columns>
                <DataGridTextColumn Header="编号" Binding="{Binding Identity}"/>
                <DataGridTextColumn Header="名称" Binding="{Binding Name}"/>
                <DataGridTextColumn Header="金额" Binding="{Binding Amount}"/>
            </DataGrid.Columns>
        </DataGrid>
    </Grid>
</UserControl>

使用以上代码导致内存升到2+G，请高手帮忙解答一下什么原因导致的