我正在构建一个需要输入字段的应用程序一个按钮和listView,因此当我在输入字段中键入某些内容并单击按钮时,输入的字段将传递给列表视图。有人有一个我可以依靠的例子吗?
预先感谢
因此,当我在输入字段中键入某些内容并单击按钮时,该字段输入到列表视图中。
首先,您可以参考此官方文档,以创建具有数据绑定的ListView。然后添加按钮和布局输入,最后您可以通过按钮单击事件来处理添加数据。
员工类:
public class Employee{
public string DisplayName {get; set;}
}
datamodel 类:
public class DataModel
{
public ObservableCollection<Employee> employees = new ObservableCollection<Employee>();
public DataModel()
{
employees.Add(new Employee { DisplayName = "Rob Finnerty" });
employees.Add(new Employee { DisplayName = "Bill Wrestler" });
employees.Add(new Employee { DisplayName = "Dr. Geri-Beth Hooper" });
employees.Add(new Employee { DisplayName = "Dr. Keith Joyce-Purdy" });
employees.Add(new Employee { DisplayName = "Sheri Spruce" });
employees.Add(new Employee { DisplayName = "Burt Indybrick" });
}
}
以下片段演示了ListView
绑定到员工列表,添加Button
和Entry
。单击按钮时,Entry
的文本将添加到ListView
:
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:local="clr-namespace:App1"
x:Class="App1.MainPage">
<StackLayout BackgroundColor="Gray">
<!-- Place new controls here -->
<Entry x:Name="EntryText" Placeholder="input"/>
<Button Text="click me"
HorizontalOptions="Center"
VerticalOptions="Center"
Clicked="OnButtonClicked"/>
<ListView x:Name="EmployeeView">
<ListView.ItemTemplate>
<DataTemplate>
<TextCell Text="{Binding DisplayName}" />
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</StackLayout>
</ContentPage>
最后ContentPage
将处理单击事件:
DataModel dataModel;
public MainPage()
{
InitializeComponent();
dataModel = new DataModel();
EmployeeView.ItemsSource = dataModel.employees;
}
void OnButtonClicked(object sender, EventArgs args)
{
Console.WriteLine("click me");
dataModel.employees.Add(new Employee { DisplayName = EntryText.Text });
}