我遇到一些麻烦,我的DataGrid:C#WPF DataGrid不动态排序上的数据更新
当我更新一些数据(从模型),它显示在我的DataGrid,但如果点击页眉当我更新现有数据时,对列进行排序时,它开始横向移动。
这里的 1例
小号
:
-
如果我添加了新的价值,它不会在年底出现(像它的时候我不排序数据网格),但它显示在错误的地方(每次都是一样的地方)。 - 如果我更新一个现有的值,那么当它需要时,顺序不会改变。
我见过多次的答案,但有人说DataGridTextColumn不应该是一个问题...
所以我想知道是不是因为字典...
我知道,与新的第一个问题数据与字典有关。
对象。
public class Player : INotifyPropertyChanged
{
private string _id;
private string _name;
private int _damage;
private int _heal;
private int _dps;
private int _hps;
private int _time = 1;
public Player(string id, string name)
{
_name = name;
_id = id;
}
public event PropertyChangedEventHandler PropertyChanged;
public string Id
{
get { return _id; }
private set
{
_id = value;
}
}
public string Name
{
get { return _name; }
private set
{
_name = value;
NotifyPropertyChanged("Name");
}
}
public int Damage
{
get { return _damage; }
set
{
_damage = value;
NotifyPropertyChanged("Damage");
Dps = _damage/_time;
}
}
public int Heal
{
get { return _heal; }
set
{
_heal = value;
NotifyPropertyChanged("Heal");
Hps = _heal/_time;
}
}
public int Dps
{
get { return _dps; }
private set
{
_dps = value;
NotifyPropertyChanged("Dps");
}
}
public int Hps
{
get {return _hps; }
private set
{
_hps = value;
NotifyPropertyChanged("Hps");
}
}
public int Time
{
get { return _time; }
set
{
_time = value;
Dps = _damage/_time;
Hps = _heal/_time;
}
}
private void NotifyPropertyChanged(string name)
{
if (PropertyChanged != null)
PropertyChanged(this, new PropertyChangedEventArgs(name));
}
}
的ObservableCollection
public sealed class ShortList
{
private static readonly ShortList instance = new ShortList();
private ObservableCollection<Player> playerList = new ObservableCollection<Player>();
private ShortList()
{
}
public static ShortList getShortList
{
get
{
return instance;
}
}
public ObservableCollection<Player> getPlayerList
{
get
{
return playerList;
}
}
public void updatePlayer(string id, string name, int damage, int heal, int time)
{
Player player;
player = findPlayer(id);
if (player != null)
{
player.Damage = player.Damage + damage;
player.Heal = player.Heal + heal;
player.Time = player.Time + time;
}
else
{
player = new Player(id, name);
player.Damage = damage;
player.Heal = heal;
player.Time = time;
playerList.Add(player);
}
}
public void clear()
{
playerList.Clear();
}
private Player findPlayer(string id)
{
foreach (Player p in playerList)
{
if (p.Id == id)
{
return p;
}
}
return null;
}
}
XAML
<DataGrid AutoGenerateColumns="False"Name="playerDataGrid" IsReadOnly="True" ItemsSource="{Binding}">
<DataGrid.Columns>
<DataGridTextColumn Header="Nom" Binding="{Binding Name}" MinWidth="35"/>
<DataGridTextColumn Header="Degats" Binding="{Binding Damage}" MinWidth="45" />
<DataGridTextColumn Header="DPS" Binding="{Binding Dps}" MinWidth="29" />
<DataGridTextColumn Header="Soins" Binding="{Binding Heal}" MinWidth="35" />
<DataGridTextColumn Header="HPS" Binding="{Binding Hps}" MinWidth="29" />
</DataGrid.Columns>
</DataGrid>
窗口
public partial class MiniParser : Window
{
public MiniParser()
{
InitializeComponent();
playerDataGrid.ItemsSource = ShortList.getShortList.getPlayerList;
temporyFill();
}
private void temporyFill()
{
ShortList.getShortList.updatePlayer("1234", "ABCD", 100, 0, 2);
ShortList.getShortList.updatePlayer("1234", "ABCD", 100, 0, 0);
ShortList.getShortList.updatePlayer("123", "ABC", 50, 0, 1);
ShortList.getShortList.updatePlayer("234", "ABC", 0, 50, 1);
ShortList.getShortList.updatePlayer("345", "BCD", 1000, 25, 25);
ShortList.getShortList.updatePlayer("456", "CDE", 250, 0, 25);
}
private void startMI_Click(object sender, RoutedEventArgs e)
{
ShortList.getShortList.updatePlayer("5678", "BABA", 100, 100, 100);
ShortList.getShortList.updatePlayer("1234", "ABCD", 100, 0, 0);
}
}
当然后面的代码最落后的代码是有测试目的......但这个想法是模型正在更新,视图需要反映更改(即使是排序)。
的情况下根据MSDN,复位手段发现“大大改变了集合的内容。”是否有一种更细化的方式让排序工作?对于小型收藏品,重置似乎没问题,但对于频繁更新的大型收藏品可能会造成问题。 – KornMuffin
如果将其从ObservableCollection更改为BindingList,该怎么办?我想BindingList会在单个项目更改时引发收集已更改的事件。 – Cesar