我红了很多关于数据网格泄漏的文章，但找不到正确的方法。这是一些要重现的代码。它有数据网格和按钮，每次按下按钮，它都会用随机数填充表格，并占用 10mb 的内存，并且不会释放它。绑定到 TextBlock 不会导致内存泄漏，但我需要文本框双向绑定。
<Window x:Class="test.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
<Grid.RowDefinitions>
<RowDefinition></RowDefinition>
<RowDefinition></RowDefinition>
</Grid.RowDefinitions>
<DataGrid Name="dg" Grid.Row="0" AutoGenerateColumns="False" ItemsSource="{Binding}">
<DataGrid.Columns>
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBox Text="{Binding Text0}"></TextBox>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBox Text="{Binding Text1}"></TextBox>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBox Text="{Binding Text2}"></TextBox>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBox Text="{Binding Text3}"></TextBox>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBox Text="{Binding Text4}"></TextBox>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBox Text="{Binding Text5}"></TextBox>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBox Text="{Binding Text6}"></TextBox>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBox Text="{Binding Text7}"></TextBox>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBox Text="{Binding Text8}"></TextBox>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTemplateColumn>
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<TextBox Text="{Binding Text9}"></TextBox>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
</DataGrid.Columns>
</DataGrid>
<Button Content="update" Grid.Row="1" Width="Auto" Height="Auto" Click="Button_Click"></Button>
</Grid>
namespace test
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
public ObservableCollection<obj> res;
private void Button_Click(object sender, RoutedEventArgs e)
{
res = new ObservableCollection<obj>();
for (var i = 0; i < 20; i++)
{
res.Add(new obj
{
Text0 = ((new Random()).NextDouble() * 100).ToString(),
Text1 = ((new Random()).NextDouble() * 100).ToString(),
Text2 = ((new Random()).NextDouble() * 100).ToString(),
Text3 = ((new Random()).NextDouble() * 100).ToString(),
Text4 = ((new Random()).NextDouble() * 100).ToString(),
Text5 = ((new Random()).NextDouble() * 100).ToString(),
Text6 = ((new Random()).NextDouble() * 100).ToString(),
Text7 = ((new Random()).NextDouble() * 100).ToString(),
Text8 = ((new Random()).NextDouble() * 100).ToString(),
Text9 = ((new Random()).NextDouble() * 100).ToString(),
});
}
dg.DataContext = res;
}
}
public class obj : INotifyPropertyChanged
{
private string text0;
public string Text0
{
get
{
return text0;
}
set
{
text0 = value;
NotifyPropertyChanged("Text0");
}
}
private string text1;
public string Text1
{
get
{
return text1;
}
set
{
text1 = value;
NotifyPropertyChanged("Text1");
}
}
private string text2;
public string Text2
{
get
{
return text2;
}
set
{
text2 = value;
NotifyPropertyChanged("Text2");
}
}
private string text3;
public string Text3
{
get
{
return text3;
}
set
{
text3 = value;
NotifyPropertyChanged("Text3");
}
}
private string text4;
public string Text4
{
get
{
return text4;
}
set
{
text4 = value;
NotifyPropertyChanged("Text4");
}
}
private string text5;
public string Text5
{
get
{
return text5;
}
set
{
text5 = value;
NotifyPropertyChanged("Text5");
}
}
private string text6;
public string Text6
{
get
{
return text6;
}
set
{
text6 = value;
NotifyPropertyChanged("Text6");
}
}
private string text7;
public string Text7
{
get
{
return text7;
}
set
{
text7 = value;
NotifyPropertyChanged("Text7");
}
}
private string text8;
public string Text8
{
get
{
return text8;
}
set
{
text8 = value;
NotifyPropertyChanged("Text8");
}
}
private string text9;
public string Text9
{
get
{
return text9;
}
set
{
text9 = value;
NotifyPropertyChanged("Text9");
}
}
private void NotifyPropertyChanged(String info)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(info));
}
}
public event PropertyChangedEventHandler PropertyChanged;
}
}