DataTables 行似乎是空列表 C# WPF

Question

我尝试用自定义 DataTable 填充 ListView。我想从字符串动态创建列和行（toParse 包含行，toParse2 包含列名）。它似乎不起作用。当我启动程序时，我看到这样的东西（System.Data.DataRowView）： RESULT

public partial class MainWindow : Window
    {
        ListView items;
        string toParse = "1 12 13\n2 15 16\n3 9 14\n20 123 541235\n4 1234 567";
        string toParse2 = "id value1 value2";
        public MainWindow()
        {
            InitializeComponent();
            items = GenerateListView(10,10);
        }
        public ListView GenerateListView(int posx, int posy)
        {
            ListView listview = new ListView();
            DataTable table = new DataTable();

            string[] columnNames = toParse2.Split(' ');
            foreach (string name in columnNames) table.Columns.Add(name);

            string[] lines = toParse.Split('\n');
            foreach(string line in lines) {
                string[] values = line.Split(' ');

                if (values.Length==columnNames.Length)
                {
                    DataRow row = table.NewRow();
                    table.Rows.Add(row);

                    for (int i=0; i<values.Length; i++)
                    {
                        row[i] = values[i];
                    }
                }
            }
            listview.ItemsSource = table.DefaultView;

            this.grid1.Children.Add(listview);
            return listview;
        }
    } 

此外，当我调试表时，似乎行数确实有效，但列表为空（？）。

Answer 1

您需要定义您的列表视图列。您可以使用 GridView 来定义您的 ListView 列。

我已添加 GridView myGridView = new GridView(); 并使用数据绑定定义其列。

public partial class MainWindow : Window
    {
        private ListView items;
        private string toParse = "1 12 13\n2 15 16\n3 9 14\n20 123 541235\n4 1234 567";
        private string toParse2 = "id value1 value2";

        public MainWindow()
        {
            InitializeComponent();
            items = GenerateListView(10, 10);
        }

        public ListView GenerateListView(int posx, int posy)
        {
            ListView listview = new ListView();
            DataTable table = new DataTable();
            GridView myGridView = new GridView();

            string[] columnNames = toParse2.Split(' ');
            foreach (string name in columnNames)
            {
                table.Columns.Add(name);

                GridViewColumn gvc = new GridViewColumn();
                gvc.DisplayMemberBinding = new Binding(name);
                gvc.Header = name;
                gvc.Width = 100;

                myGridView.Columns.Add(gvc);
            }
            string[] lines = toParse.Split('\n');
            foreach (string line in lines)
            {
                string[] values = line.Split(' ');

                if (values.Length == columnNames.Length)
                {
                    DataRow row = table.NewRow();
                    table.Rows.Add(row);

                    for (int i = 0; i < values.Length; i++)
                    {
                        row[i] = values[i];
                    }
                }
            }

            listview.View = myGridView;
            listview.ItemsSource = table.DefaultView;

            this.grid1.Children.Add(listview);
            return listview;
        }
    }