wpf 如何在WPF C#中将数据从数据库显示到ListView
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How to display data from database to ListView in WPF C#
提问by aiden87
I'm trying to display data from my Entitity Framework database to my ListView in my WPF C# application.
我正在尝试将数据从我的实体框架数据库显示到我的 WPF C# 应用程序中的 ListView。
I'm using WCF app as my host, where I keep my methods for displaying data, adding data, etc., and I have WPF app as my client, where I use the code to display data from database to my ListView.
我使用 WCF 应用程序作为我的主机，在那里我保留了显示数据、添加数据等的方法，并且我将 WPF 应用程序作为我的客户端，在那里我使用代码将数据从数据库显示到我的 ListView。
This is my code
这是我的代码
ServiceReference1.ImojWCFServiceClient client = new ServiceReference1.ImojWCFServiceClient();
listView1.Items.Clear();
var userList = client.getUsers();
foreach (var user in userList)
{
ListViewItem listOfUsers;
string[] list = new string[3];
list[0] = user.UserID.ToString();
list[1] = user.Name;
list[2] = user.LastName;
listOfUsers = new ListViewItem(list);
listView1.Items.Add(listOfUsers);
}
This is the error that I get
这是我得到的错误
Can somebody help me fix this code?
有人可以帮我修复此代码吗？
Any help is appreciated!
任何帮助表示赞赏！
回答by learningcs
If your getUsersmethod returns a list, array, or similar, you could simply set the ItemsSource of the ListView to userList. For example:
如果您的getUsers方法返回一个列表、数组或类似的东西，您可以简单地将 ListView 的 ItemsSource 设置为userList。例如：
ServiceReference1.ImojWCFServiceClient client = new ServiceReference1.ImojWCFServiceClient();
listView1.Items.Clear();
var userList = client.getUsers();
listView1.ItemsSource = userList;
If that doesn't work, convert userList to an ObservableCollection before setting the ItemsSource
如果这不起作用，请在设置 ItemsSource 之前将 userList 转换为 ObservableCollection
Your Xaml might look like this...
您的 Xaml 可能看起来像这样...
<ListView>
<ListView.View>
<GridView>
<GridViewColumn Header="ID" DisplayMemberBinding="{Binding UserID}"/>
<GridViewColumn Header="Name" DisplayMemberBinding="{Binding Name}"/>
<GridViewColumn Header="Last Name" DisplayMemberBinding="{Binding LastName}"/>
</GridView>
</ListView.View>
</ListView>
回答by Robert Harvey
ListViewItemdoesn't have a constructor that takes one argument. So listOfUsers = new ListViewItem(list);isn't going to work.
ListViewItem没有接受一个参数的构造函数。所以listOfUsers = new ListViewItem(list);不会工作。
Try an approach like this:
尝试的方法是这样：
var items = new List<User>();
items.Add(new User() { Name = "John Doe", Age = 42 });
items.Add(new User() { Name = "Jane Doe", Age = 39 });
items.Add(new User() { Name = "Sammy Doe", Age = 13 });
myListView.ItemsSource = items;
