使用 C# 和 WPF 將數據從 SQLite 綁定到 DataGrid

Question

我在MyController有一個方法Load ：

public void Load(ItemsControl control, string commandText)
{
    try
    {
        _db.OpenConnection();

        using (SQLiteCommand command = new SQLiteCommand(commandText, _db.Connection))
        using (SQLiteDataAdapter dataAdapter = new SQLiteDataAdapter(command))
        {
            DataTable dataTable = new DataTable();
            dataAdapter.Fill(dataTable);
            control.ItemsSource = dataTable.AsDataView();
        }
    }
    catch (Exception exp)
    {
        //...;
    }
}

然后在XAML我有：

<DataGrid x:Name="DataGrid_1" ... AutoGenerateColumns="True" Loaded="DataGrid_1_Loaded">

最后在DataGrid_1_Loaded()我像這樣調用Load()方法：

MyController.Load(DataGrid_1, "CREATE VIEW IF NOT EXISTS content_for_dg AS SELECT name,surname FROM people");

當我運行程序時，我看到Data_Grid_1頂部有一點空白，但沒有列也沒有數據。 我用 SQLite 瀏覽器打開了數據庫，視圖content_for_dg存在並包含正確的數據......

我錯過了什么？ 為什么數據沒有顯示在DataGrid ？

Answer 1

如果我刪除using (SQLiteCommand command = new SQLiteCommand(commandText, _db.Connection))並以這種方式創建SQLiteDataAdapter SQLiteDataAdapter dataAdapter = new SQLiteDataAdapter(commandText, _db.Connection) ，那么它工作正常......

public void Load(ItemsControl control, string commandText)
{
    try
    {
        _db.OpenConnection();

        using (SQLiteDataAdapter dataAdapter = new SQLiteDataAdapter(commandText, _db.Connection))
        {
            DataTable dataTable = new DataTable();
            dataAdapter.Fill(dataTable);
            control.ItemsSource = dataTable.AsDataView();
        }
    }
    catch (Exception exp)
    {
        //...;
    }
}