获取LINQ查询结果绑定的DataGrid中DataGridTemplateColumn的编辑值

// LINQ查询数据
var query = from item in dbContext.Items
            select item;

// 将LINQ查询结果绑定到DataGrid
dataGrid.ItemsSource = query;

// 创建DataGridTemplateColumn
DataGridTemplateColumn templateColumn = new DataGridTemplateColumn();
templateColumn.Header = "编辑";
templateColumn.CellTemplate = new DataTemplate();

// 创建编辑控件
FrameworkElementFactory textBoxFactory = new FrameworkElementFactory(typeof(TextBox));
textBoxFactory.SetBinding(TextBox.TextProperty, new Binding("PropertyName"));

// 将编辑控件添加到DataTemplate中
templateColumn.CellTemplate.VisualTree = textBoxFactory;

// 将DataGridTemplateColumn添加到DataGrid中
dataGrid.Columns.Add(templateColumn);

// 获取编辑值
private void dataGrid_RowEditEnding(object sender, DataGridRowEditEndingEventArgs e)
{
    // 获取编辑的行
    var editedItem = e.Row.Item as YourItemType;

    // 获取编辑值
    string editedValue = ((TextBox)e.Row.FindName("TextBoxName")).Text;

    // 处理编辑值...
}