Question

所以我正在处理从数据库中检索数据的应用程序，我想在DataGrid中使用我创建的自定义列显示它。

XAML：

<DataGrid x: Name = "dataGridAddedAgents" Grid.Column = "0" Grid.ColumnSpan = "7"  ItemsSource = "{Binding}"  HorizontalAlignment = "Stretch" Margin = "10,0" Grid.Row = "3" VerticalAlignment = "Top" AutoGenerateColumns = "False"  IsReadOnly = "True" >
<DataGrid.Columns>            
    <DataGridTextColumn Binding = "{Binding Path=Id}"  Width = "0.25*"  Header = "Id" CanUserResize = "False" CanUserReorder = "False" Foreground = "{x:Null}" />                    
    <DataGridTextColumn Binding = "{Binding Path=FirstName}" Width = "0.15*"  Header = "First name" CanUserResize = "False" CanUserReorder = "False" Foreground = "{x:Null}" />                                         
    <DataGridTextColumn Binding = "{Binding Path=LastName}" Width = "0.15*"  Header = "Last name" CanUserResize = "False" CanUserReorder = "False" Foreground = "{x:Null}" />                                                     
    <DataGridTextColumn Binding = "{Binding Path=Email}"  Width = "0.20*"  Header = "Email" CanUserResize = "False" CanUserReorder = "False" Foreground = "{x:Null}" />                                                               
    <DataGridTextColumn Binding = "{Binding Path=Username}"  Width = "0.15*" Header = "Username" CanUserResize = "False" CanUserReorder = "False" Foreground = "{x:Null}" />                        
    <DataGridTextColumn Width = "0.10*" ClipboardContentBinding = "{x:Null}" Header = "Remove" CanUserResize = "False" CanUserReorder = "False" Foreground = "{x:Null}" />                                                                                     
</DataGrid.Columns>                                                                  
</DataGrid>

这里是c＃代码，我尝试将数据放入DataGrid

response = await client.GetAsync("api/user/agents");
        listOfAgents = await response.Content.ReadAsAsync<ICollection<ApplicationUserModel>>();                        
        dataGridAddedAgents.ItemsSource = listOfAgents;

我已经检查过调试器并将数据正确加载到listOfAgents中。当我运行程序时，DataGrid显示正确的行数，但所有单元格都是空的。

编辑：

 public class ApplicationUserModel
{
    public string Id { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public string GuestIdentification { get; set; }
    public string Email { get; set; }
    public string Username { get; set; }
    public string Password { get; set; }
}

类ApplicationUserModel看起来像这样。我也使用它写入数据库，它的工作原理 Soulutin：

删除Foreground =＆＃34; {x：Null}＆＃34;从DataGrid中的列修复它。感谢@ mm8的帮助

Answer 1

当我运行程序时，DataGrid显示正确的行数，但所有单元格都是空的。

然后，您需要确保ApplicationUserModel类包含名为＆＃34; Id＆＃34;，＆＃34; FirstName＆＃34;，＆＃34的公共属性（而非字段） ; LastName＆＃34;，＆＃34; Email＆＃34;和＆＃34;用户名＆＃34;并且这些属性通常会返回预期值。

每个属性至少应该有一个公共setter，以便您能够绑定它们：

public class ApplicationUserModel
{
   public string Id {get; set; }
   public string FirstName {get; set; }
   ...
}

修改：你还要删除Foreground =＆＃34; {x：Null}＆＃34;来自您的DataGridTextColumns。

顺便说一句，你以编程方式设置的ItemsSource将覆盖＆＃34;你在XAML标记中绑定的那个。

Answer 2

显然，我的变量没有设置为public，现在可以使用了。

Wpf DataGrid只显示空行

2 个答案: