Question

这是我第一次使用C＃DataGrid控件（以及我的第一个c＃项目之一）而且我很难让DataGrid控件以编程方式填充。每次我用两列添加一行时，它们都是空白的。

XAML代码

<DataGrid ItemsSource="{Binding}" x:Name="resultsDataGrid"  HorizontalAlignment="Left" Margin="10,454,0,0" VerticalAlignment="Top" Height="199" Width="499">
    <DataGrid.Columns>
        <DataGridTextColumn Header="Url"/>
        <DataGridTextColumn Header="404"/>
    </DataGrid.Columns>
</DataGrid>

CS代码

resultsDataGrid.Items.Add(new object[] { detailsOfFind[0], detailsOfFind[1] });

我一直在查看示例，我可以看到你必须绑定到数据集/数据库/源，但是当我以编程方式添加这些时我不知道如何做到这一点？我在这里做错了什么？

Answer 1

DataGrid有一个名为AutoGenerateColumns的属性，默认为true。这将自动为每个属性创建一个列，其中包含属性名称的标题。但是，由于您使用的是匿名类型，因此您没有属性名称。这就是你的空白栏的来源。

解决方案是将AutoGenerateColumns="False"添加到您的<DataGrid>参数中。

Answer 2

试试这个：

XAML代码：

<Grid Height="396" Name="grid1" Width="565">
    <DataGrid AutoGenerateColumns="False" Height="170" HorizontalAlignment="Left" Margin="12,85,0,0" Name="dataGrid1" VerticalAlignment="Top" Width="541" />
    <Button Content="Button" Height="23" HorizontalAlignment="Left" Margin="12,37,0,0" Name="button1" VerticalAlignment="Top" Width="75" Click="button1_Click" />
</Grid>

CS代码：

namespace WpfApplication1
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            // Add Columns to the dataGrid
            DataGridTextColumn c1 = new DataGridTextColumn();
            c1.Header = "Person ID";
            c1.Binding = new Binding("ID");
            c1.Width = 110;
            dataGrid1.Columns.Add(c1);

            DataGridTextColumn c2 = new DataGridTextColumn();
            c2.Header = "First Name";
            c2.Width = 110;
            c2.Binding = new Binding("FirstName");
            dataGrid1.Columns.Add(c2);

            DataGridTextColumn c3 = new DataGridTextColumn();
            c3.Header = "Last Name";
            c3.Width = 110;
            c3.Binding = new Binding("LastName");
            dataGrid1.Columns.Add(c3);

            // Create the Data
            List<Person> myData = new List<Person>();
            myData.Add(new Person() { ID = 5, FirstName = "Jamie", LastName = "White" });
            myData.Add(new Person() { ID = 10, FirstName = "Mike", LastName = "Smith" });
            myData.Add(new Person() { ID = 25, FirstName = "Joe", LastName = "Yang" });

            // Pass the data to the dataGrid
            dataGrid1.ItemsSource = myData;

            //// OR

            //dataGrid1.Items.Add(new Person() { ID = 5, FirstName = "Jamie", LastName = "Weir" });
            //dataGrid1.Items.Add(new Person() { ID = 10, FirstName = "Mike", LastName = "Smith" });
            //dataGrid1.Items.Add(new Person() { ID = 25, FirstName = "Joe", LastName = "Yang" });

            // Modify a cell
            ((Person)dataGrid1.Items[1]).LastName = "Schmidt";

        }
    }

    public class Person
    {
        public int ID { set; get; }
        public string FirstName { set; get; }
        public string LastName { set; get; }
    }


}

C＃以编程方式添加到DataGrid控件会导致空白列

2 个答案: