Question

如何在WPF中以编程方式将数据项添加到DataGrid哪些没有绑定？ DataGrid有4列。

Answer 1

目前还不是很清楚，你喜欢做什么。我想，你已经定义了一个你想放置DataGrid的地方。为了便于说明，我创建了一个新的WPF项目并使用chridram提供的代码，该代码发布了第一个答案。

在下面的MainWindow.xaml中，我将Grid MainGrid命名为在后面的代码中访问它：

<Window x:Class="WpfExperiments.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Grid Name="MainGrid"/>
</Window>

DataItem类不是WPF类，而是由Yourself创建的自定义类：

public class DataItem
{
    public string Column1 { get; set; }
    public string Column2 { get; set; }
    public string Column3 { get; set; }
    public string Column4 { get; set; }
}

要让DataGrid以编程方式显示存储在DataItem对象中的数据，您可以执行以下操作：

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();

        // Your programmatically created DataGrid is attached to MainGrid here
        var dg = new DataGrid();
        this.MainGrid.Children.Add(dg);

        // create four columns here with same names as the DataItem's properties
        for (int i = 1; i <= 4; ++i)
        {
            var column = new DataGridTextColumn();
            column.Header = "Column" + i;
            column.Binding = new Binding("Column" + i);
            dg.Columns.Add(column);
        }

        // create and add two lines of fake data to be displayed, here
        dg.Items.Add(new DataItem { Column1 = "a.1", Column2 = "a.2", Column3 = "a.3", Column4 = "a.4" });
        dg.Items.Add(new DataItem { Column1 = "b.1", Column2 = "b.2", Column3 = "b.3", Column4 = "b.4" });
    }
}

我希望这会有所帮助。

问候约尔格

Answer 2

这是一个用于从数据库中检索数据的函数 , '%Y-%m-%d' )

SELECT a.id, a.clientId, a.enrollDate, a.cancelDate FROM gap_borrower a WHERE STR_TO_DATE( a.`loanEndDate` ,  '%Y-%m-%d' ) >= STR_TO_DATE(  '2015-12-31',  '%Y-%m-%d' ) AND FIND_IN_SET( a.status,  'A,C' ) AND (CASE WHEN a.cancelDate IS NOT NULL THEN (STR_TO_DATE( a.`enrollDate` ,  '%Y-%m-%d' ) <> STR_TO_DATE(  a.cancelDAte,  '%Y-%m-%d' )) END  )

Answer 3

.xaml：

<DataGrid x:Name="dataGrid" Margin="10">
    <DataGrid.Columns>
        <DataGridCheckBoxColumn Binding="{Binding Path=Column1}"/>
        <DataGridTextColumn Binding="{Binding Path=Column2}"/>
    </DataGrid.Columns>
</DataGrid>

.cs：

public class DataItem
{
    public bool Column1 { get; set; }
    public string Column2 { get; set; }
}

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

    private void Window_Loaded(object sender, RoutedEventArgs e)
    {
        DataItem item = new DataItem();
        item.Column1 = true;
        item.Column2 = "test";
        dataGrid.Items.Add(item);
    }
}

如何以编程方式将数据添加到WPF数据网格

3 个答案: