WPF - 如何获取 DataGrid 中每一行的高度？

Question

我有一个在单元格中启用了 TextWrapping 的 DataGrid。这意味着行没有相同的高度。我的问题是如何遍历行并获取每一行的高度？DataGrid 的样子：

这是数据网格代码：

    public ObservableCollection<Article> persons = new ObservableCollection<Article>();

for(int i = 0; i < 35; i++)

{

    persons.Add(new Article("Restless legs syndrome and tis correlation with other sleep problems in the general adult population of Japan",

                         "Minori Enomoto, Lan Li, Sayaka Aritake, Yukihiro Nagase, Tatsuhiko Kaji, Hirokuni Tagaya, Masato Matsuura, Yoshitaka Kaneita, Takashi Ohida, Makoto Uchiyama",

                         "Sleep and Biological Rhythms",

                         4));

}

dgMain.ItemsSource = persons;

我是这样计算的：

        private void btnTest_Click(object sender, RoutedEventArgs e)

    {

        int k = 0;

        var rows = GetDataGridRows(dgMain);

        foreach (DataGridRow r in rows)

        {

            var rowHeight = r?.ActualHeight;

            k++;

        }

        MessageBox.Show(k.ToString());

    }

这是文章类：

    public class Article

{

    private string _title;

    public string Title

    {

        get { return this._title; }

        set { this._title = value; }

    }

    private string _authors;

    public string Authors

    {

        get { return this._authors; }

        set { this._authors = value; }

    }

    private string _journal;

    public string Journal

    {

        get { return this._journal; }

        set { this._journal = value; }

    }

    private int _year;

    public int Year

    {

        get { return this._year; }

        set { this._year = value; }

    }

    public Article(string Title, string Authors, string Journal, int Year)

    {

        this._title = Title;

        this._authors = Authors;

        this._journal = Journal;

        this._year = Year;

    }

}            

Answer 1

你可以这样做var rows = GetDataGridRows(datagrid);foreach (DataGridRow r in rows)&nbsp;{&nbsp; &nbsp; &nbsp; &nbsp;var rowHeight = r?.ActualHeight;&nbsp;}&nbsp; public IEnumerable<DataGridRow> GetDataGridRows(System.Windows.Controls.DataGrid grid)&nbsp; &nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; var itemsSource = grid.ItemsSource as IEnumerable;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (null == itemsSource) yield return null;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; foreach (var item in itemsSource)&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; var row = grid.ItemContainerGenerator.ContainerFromItem(item) as DataGridRow;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if (null != row) yield return row;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; }Xaml<StackPanel Orientation="Vertical" >&nbsp; &nbsp; &nbsp; &nbsp; <Button Click="Button_Click" Height="39" Width="40"></Button>&nbsp; &nbsp; &nbsp; &nbsp; <DataGrid x:Name="dgMain" AutoGenerateColumns="True"&nbsp; HorizontalAlignment="Left" Height="auto" VerticalAlignment="Top" Width="auto" HorizontalScrollBarVisibility="Visible" VerticalScrollBarVisibility="Visible" >&nbsp; &nbsp; &nbsp; &nbsp; </DataGrid>&nbsp; &nbsp; </StackPanel>