C# wpf是否按名称获取值?
在WPF上在c#上我有组合框C# wpf是否按名称获取值?,c#,wpf,combobox,C#,Wpf,Combobox,在WPF上在c#上我有组合框 <ComboBox x:Name="listCombobox" /> 我希望在组合框上看到的是名称(如现在) 但当我选择时,在代码后面我将看不到我选择的名称 我想看看所选的号码 谢谢 我认为,最简单的方法是将这些数字作为每个列表组合框项的标记: foreach (var item in list) { listCombobox.Items.Add(new ComboBoxItem { Content = item.Name, Tag
<ComboBox x:Name="listCombobox" />
我希望在组合框上看到的是名称(如现在)
但当我选择时,在代码后面我将看不到我选择的名称
我想看看所选的号码
谢谢 我认为,最简单的方法是将这些数字作为每个
列表组合框
项的标记:
foreach (var item in list) {
listCombobox.Items.Add(new ComboBoxItem { Content = item.Name, Tag = item.Number });
}
并访问您的号码(OnSelectedItemchanged
),例如:
我将按如下方式解决它:
...
foreach (var item in list)
listCombobox.Items.Add(new ComboBoxItem() {
Content = item.Name,
Tag = item.Number
});
当然,您可以使用
int mytag = listCombobox.Items[3].Tag;
或
的MSDN参考定义这样的类
public class dataObject
{
public int Number { get; set; }
public string Name { get; set; }
}
并填写数据,
List<dataObject> bindingList = new List<dataObject>();
bindingList.Add(new dataObject()
{
Name = "Smith",
Number = 1
});
bindingList.Add(new dataObject()
{
Name = "John",
Number = 12
});
bindingList.Add(new dataObject()
{
Name = "Bon",
Number = 14
});
listCombobox.ItemsSource = bindingList;
listCombobox.DisplayMemberPath = "Name";
我将使用自定义ListItem类并将此类型的对象分配给combobox控件的ItemSource属性,如下所示:
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
var list = new List<ListItem>
{
new ListItem{ Value = 1, Text = "Smith" },
new ListItem{ Value = 12, Text = "John" } ,
new ListItem{ Value = 14, Text = "Bon" }
}.ToList();
listCombobox.ItemsSource = list;
listCombobox.DisplayMemberPath = "Text";
listCombobox.SelectedValuePath = "Value";
}
private void listCombobox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
var selectedItem = (sender as ComboBox).SelectedItem as ListItem;
if (selectedItem != null)
{
// do something with the selected item
}
}
}
public class ListItem
{
public string Text { get; set; }
public int Value { get; set; }
}
公共部分类主窗口:窗口
{
公共主窗口()
{
初始化组件();
变量列表=新列表
{
新列表项{Value=1,Text=“Smith”},
新列表项{Value=12,Text=“John”},
新列表项{Value=14,Text=“Bon”}
}.ToList();
listCombobox.ItemsSource=列表;
listCombobox.DisplayMemberPath=“Text”;
listCombobox.SelectedValuePath=“Value”;
}
私有无效列表组合框\u SelectionChanged(对象发送者,SelectionChangedEventArgs e)
{
var selectedItem=(发件人作为组合框)。selectedItem作为列表项;
如果(selectedItem!=null)
{
//对所选项目执行某些操作
}
}
}
公共类列表项
{
公共字符串文本{get;set;}
公共int值{get;set;}
}
请怎么办?你能给我举个例子吗?看看这个答案。还有这个有趣的是,我们同时发布了答案^^
public class dataObject
{
public int Number { get; set; }
public string Name { get; set; }
}
List<dataObject> bindingList = new List<dataObject>();
bindingList.Add(new dataObject()
{
Name = "Smith",
Number = 1
});
bindingList.Add(new dataObject()
{
Name = "John",
Number = 12
});
bindingList.Add(new dataObject()
{
Name = "Bon",
Number = 14
});
listCombobox.ItemsSource = bindingList;
listCombobox.DisplayMemberPath = "Name";
private void listCombobox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
dataObject result = (dataObject)listCombobox.SelectedItem;
var selectedNumber = result.Number;
}
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
var list = new List<ListItem>
{
new ListItem{ Value = 1, Text = "Smith" },
new ListItem{ Value = 12, Text = "John" } ,
new ListItem{ Value = 14, Text = "Bon" }
}.ToList();
listCombobox.ItemsSource = list;
listCombobox.DisplayMemberPath = "Text";
listCombobox.SelectedValuePath = "Value";
}
private void listCombobox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
var selectedItem = (sender as ComboBox).SelectedItem as ListItem;
if (selectedItem != null)
{
// do something with the selected item
}
}
}
public class ListItem
{
public string Text { get; set; }
public int Value { get; set; }
}