WPF从其他窗口添加数据网格行
本文关键字:数据网 网格 数据 添加 其他 窗口 WPF | 更新日期: 2023-09-27 18:06:47
我有一个add movie window:
private void button1_Click(object sender, RoutedEventArgs e)
{
string name = txtName.Text;
string genre = txtGenre.Text;
bool dubbed = checkBox1.IsChecked.Value;
bool is3d = checkBox2.IsChecked.Value;
MessageBox.Show(name + " " + genre);
var main = new MainWindow();
main.CallbackAddMovie(name, genre, dubbed, is3d);
this.Close();
}
和回调:
public class DataItem
{
public string name { get; set; }
public string genre { get; set; }
public bool dubbed { get; set; }
public bool is3d { get; set; }
}
public void CallbackAddMovie(string mname, string mgenre, bool mdubbed, bool mis3d)
{
dataGrid1.Items.Add(new DataItem { name = "Movie name2", genre = "Action", dubbed = true, is3d = true });
dataGrid1.Items.Add(new DataItem { name = mname, genre = mgenre, dubbed = mdubbed, is3d = mis3d });
dataGrid1.SelectAll();
}
当我添加电影时,我得到消息框,但数据网格中没有新项目。怎么了?
编辑:
下面是我创建的数据网格:
var colname = new DataGridTextColumn();
colname.Header = "Name";
colname.Binding = new Binding("name");
dataGrid1.Columns.Add(colname);
var colgenre = new DataGridTextColumn();
colgenre.Header = "Genre";
colgenre.Binding = new Binding("genre");
dataGrid1.Columns.Add(colgenre);
var coldubbed = new DataGridCheckBoxColumn();
coldubbed.Header = "Dubbed";
coldubbed.Binding = new Binding("dubbed");
dataGrid1.Columns.Add(coldubbed);
var col3d = new DataGridCheckBoxColumn();
col3d.Header = "3D";
col3d.IsReadOnly = true;
col3d.Binding = new Binding("is3d");
dataGrid1.Columns.Add(col3d);
// create and add two lines of fake data to be displayed, here
dataGrid1.Items.Add(new DataItem { name = "Movie name", genre = "Action", dubbed = true, is3d = true });
编辑:
完整项目:
MainWindow.cs:
http://pastebin.com/Xrr6DjuH主窗口。xaml:
http://pastebin.com/SJS4akU4AddMovie:
http://pastebin.com/J7C5ub8N
您应该创建一个集合,如List<>
或ObservableCollection<>
,并将其指定为数据网格的数据源,而不是使用Items.Add()
直接向数据网格添加项。然后,不是向数据网格中添加新的DataItem
,而是简单地向数据源中添加一个新对象,网格将自动更新。
WPF意味着在MVC模式中使用,而你使用它更像WinForms。
编辑:下面是一个示例,显示WPF在这种情况下是如何工作的
MainWindow.xaml.cs
public partial class MainWindow : Window
{
ObservableCollection<ListObject> _listDatasource;
public MainWindow()
{
InitializeComponent();
_listDatasource = new ObservableCollection<ListObject>();
listView1.ItemsSource = _listDatasource;
}
private void button1_Click(object sender, RoutedEventArgs e)
{
AddWindow winAdd = new AddWindow();
winAdd.AddItem += new AddItemHandler(winAdd_AddItem);
winAdd.Show();
}
void winAdd_AddItem(object sender, ListObject itemToAdd)
{
_listDatasource.Add(itemToAdd);
}
}
MainWindow.xaml
<Grid>
<ListView Height="163" HorizontalAlignment="Left" Margin="34,56,0,0" Name="listView1" VerticalAlignment="Top" Width="322" >
<ListView.View>
<GridView x:Name="gridList" >
<GridViewColumn x:Name="colValue" DisplayMemberBinding="{Binding Path=ListValue}" Header="Value" />
</GridView>
</ListView.View>
</ListView>
<Button Content="Open Add Window" Height="23" HorizontalAlignment="Left" Margin="47,27,0,0" Name="button1" VerticalAlignment="Top" Width="177" Click="button1_Click" />
</Grid>
AddWindow.xaml
<Grid>
<TextBox Height="23" HorizontalAlignment="Left" Margin="57,71,0,0" Name="textBox1" VerticalAlignment="Top" Width="120" />
<Label Content="Add this:" Height="28" HorizontalAlignment="Left" Margin="57,46,0,0" Name="label1" VerticalAlignment="Top" />
<Button Content="Add it" Height="23" HorizontalAlignment="Left" Margin="102,114,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click" />
</Grid>
AddWindow.xaml.cs
public delegate void AddItemHandler(object sender, ListObject itemToAdd);
public partial class AddWindow : Window
{
public event AddItemHandler AddItem;
public AddWindow()
{
InitializeComponent();
}
private void button1_Click(object sender, RoutedEventArgs e)
{
ListObject itemToAdd = new ListObject();
itemToAdd.ListValue = textBox1.Text;
AddItem(this, itemToAdd);
}
}
ListObject.cs
public class ListObject
{
private string _listValue;
public string ListValue
{
get { return _listValue; }
set { _listValue = value; }
}
}