以下代码实现了DataGrid的简单绑定List数据源
重点要提一下的是，绑定List数据源，但是不能直接用List。比如下面的代码，使用List<GridItem>只能实现数据修改的绑定，但是数据添加，删除都无法实现双向绑定。所以这里要改用ObservableCollection<GridItem>，其他代码都不用改。只要类型改下即可，WPF内部已经实现了添加，删除等的双向绑定功能。
接下去，就直接上代码了....
1、Model
public class GridModel
{ public GridModel()
{
GridData = new ObservableCollection<GridItem>();
}
public ObservableCollection<GridItem> GridData
{
get
{
return _griddata;
}
set
{
_griddata = value;
}
} private ObservableCollection<GridItem> _griddata;
}
GridItem数据类
public class GridItem : INotifyPropertyChanged
{
public GridItem(string name, string sex, bool chk = false)
{
Name = name;
Sex = sex;
UserChecked = chk;
}
public string Name
{
get { return _name; }
set {
if (_name != value)
{
_name = value;
OnPropertyChanged("Name");
}
}
}
public string Sex
{
get { return _sex; }
set
{
if (_sex != value)
{
_sex = value;
OnPropertyChanged("Sex");
}
}
}
public bool UserChecked
{
get { return _userchecked; }
set
{
if (_userchecked != value)
{
_userchecked = value;
OnPropertyChanged("UserChecked");
}
}
} public event PropertyChangedEventHandler PropertyChanged; protected virtual void OnPropertyChanged(string propertyName)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
} private string _name;
private string _sex;
private bool _userchecked;
}
2、ViewModel
public class GridViewModel
{
public GridViewModel()
{
GridSource = new GridModel();
GridSource.GridData.Add(new GridItem("王路飞", "男"));
GridSource.GridData.Add(new GridItem("娜美", "女", true));
AddCommand = new DelegateCommand(Add, (obj) => true);
DecCommand = new DelegateCommand(Dec, (obj) => true);
ModifyCommand = new DelegateCommand(Modify, (obj) => true);
ShowCommand = new DelegateCommand(Show, (obj) => true);
}
public GridModel GridSource
{ get; set; } public ICommand AddCommand
{ get; set; }
public ICommand DecCommand
{ get; set; }
public ICommand ModifyCommand
{ get; set; }
public ICommand ShowCommand
{ get; set; } private void Add(object obj)
{
GridSource.GridData.Add(new GridItem("Luffy", "man",true));
}
private void Dec(object obj)
{
GridSource.GridData.RemoveAt();
}
private void Modify(object obj)
{
GridSource.GridData[].Name = "路飞";
GridSource.GridData[].Sex = "女";
GridSource.GridData[].UserChecked = true;
}
private void Show(object obj)
{
MessageBox.Show(GridSource.GridData[].Name + "," + GridSource.GridData[].Sex + "," + GridSource.GridData[].UserChecked);
}
}
3、XMAL
<Grid>
<TextBox x:Name="textBox" HorizontalAlignment="Left" Height="23" Margin="27,25,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120">
</TextBox>
<Label x:Name="label" Content="Label" Margin="173,23,79,0" VerticalAlignment="Top"/>
<Label x:Name="label1" Content="Label" Margin="233,23,19,0" VerticalAlignment="Top"/>
<DataGrid x:Name="dataGrid" Margin="16,71,19,44" ItemsSource="{Binding GridSource.GridData}" AutoGenerateColumns="False">
<DataGrid.Columns>
<DataGridTemplateColumn Header="选中" Width="40">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<CheckBox IsChecked="{Binding UserChecked, Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"></CheckBox>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTextColumn Header="用户名" Width="80" Binding="{Binding Name, Mode=TwoWay}"/>
<DataGridTextColumn Header="用户性别" Width="80" Binding="{Binding Sex, Mode=TwoWay}"/>
</DataGrid.Columns>
</DataGrid>
<Button x:Name="button" Content="添加" Command="{Binding AddCommand}" HorizontalAlignment="Left" Margin="16,0,0,5" Width="53" Height="29" VerticalAlignment="Bottom"/>
<Button x:Name="button_Copy" Content="删除" Command="{Binding DecCommand}" HorizontalAlignment="Left" Margin="83,0,0,5" Width="53" Height="29" VerticalAlignment="Bottom"/>
<Button x:Name="button_Copy1" Content="修改" Command="{Binding ModifyCommand}" HorizontalAlignment="Left" Margin="151,0,0,5" Width="53" Height="29" VerticalAlignment="Bottom"/>
<Button x:Name="button_Copy2" Content="显示" Command="{Binding ShowCommand}" HorizontalAlignment="Left" Margin="220,0,0,5" Width="53" Height="29" VerticalAlignment="Bottom"/> </Grid>
4、后台代码
this.DataContext = new ViewModel.GridViewModel();
功能补充：一个文本框绑定2个属性X+Y形式
1、XMAL修改，主要是绑定使用MultiBinding （红色是新增的）
<Window x:Class="AddMessage.BindingTest"
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:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:AddMessage"
xmlns:localmodel="clr-namespace:AddMessage.Model"
mc:Ignorable="d"
Title="BindingTest" Height="" Width="" WindowStartupLocation="CenterScreen">
<Window.Resources>
<localmodel:TextConverter x:Key="TxtConvert"></localmodel:TextConverter>
</Window.Resources>
<Grid>
<TextBox x:Name="textBox" HorizontalAlignment="Left" Height="23" Margin="27,25,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120">
<TextBox.Text>
<MultiBinding Converter="{StaticResource TxtConvert}">
<Binding Path="Text" ElementName="lblleft"/>
<Binding Path="Text" ElementName="lblright"/>
</MultiBinding>
</TextBox.Text>
</TextBox>
<TextBox x:Name="lblleft" Text="1" Margin="173,23,79,0" Height="25" VerticalAlignment="Top"/>
<TextBox x:Name="lblright" Text="2" Margin="233,23,19,0" Height="25" VerticalAlignment="Top"/>
<DataGrid x:Name="dataGrid" Margin="16,71,19,44" ItemsSource="{Binding GridSource.GridData}" AutoGenerateColumns="False">
<DataGrid.Columns>
<DataGridTemplateColumn Header="选中" Width="">
<DataGridTemplateColumn.CellTemplate>
<DataTemplate>
<CheckBox IsChecked="{Binding UserChecked, Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}"></CheckBox>
</DataTemplate>
</DataGridTemplateColumn.CellTemplate>
</DataGridTemplateColumn>
<DataGridTextColumn Header="用户名" Width="" Binding="{Binding Name, Mode=TwoWay}"/>
<DataGridTextColumn Header="用户性别" Width="" Binding="{Binding Sex, Mode=TwoWay}"/>
</DataGrid.Columns>
</DataGrid>
<Button x:Name="button" Content="添加" Command="{Binding AddCommand}" HorizontalAlignment="Left" Margin="16,0,0,5" Width="" Height="" VerticalAlignment="Bottom"/>
<Button x:Name="button_Copy" Content="删除" Command="{Binding DecCommand}" HorizontalAlignment="Left" Margin="83,0,0,5" Width="" Height="" VerticalAlignment="Bottom"/>
<Button x:Name="button_Copy1" Content="修改" Command="{Binding ModifyCommand}" HorizontalAlignment="Left" Margin="151,0,0,5" Width="" Height="" VerticalAlignment="Bottom"/>
<Button x:Name="button_Copy2" Content="显示" Command="{Binding ShowCommand}" HorizontalAlignment="Left" Margin="220,0,0,5" Width="" Height="" VerticalAlignment="Bottom"/> </Grid>
</Window>
2、TextConverter 格式转换类，即处理，将2个文本合并成一个文本
public class TextConverter : IMultiValueConverter
{
public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
string val = "";
foreach (var v in values)
{
if (val == "")
val = v.ToString();
else
val += "+" + v;
}
return val;
} public object[] ConvertBack(object value, Type[] targetTypes, object parameter, CultureInfo culture)
{
string val = value.ToString();
string[] vals = val.Split('+');
return vals;
}
}