使用LINQ将数据绑定到网格视图，而无需添加DataClasses

Question

I have seen many articles using LINQ to bind gridview , but in all are using DataClasses . Is it possible to bind data to grid view using LINQ with out adding DataClasses .. Can any one give me any sample code or working example on this

Answer 1

I think I may be missing the point, but whatever the source of your data, as long as it's some form of collection, you can use Linq to objects to query the data. So for example:

public partial class WebUserControl1 : System.Web.UI.UserControl
{
    private readonly List<DataItem> _items;

    public WebUserControl1()
    {
        _items = new List<DataItem>
                     {
                         new DataItem {Name = "Fred"},
                         new DataItem {Name = "Dave"},
                         new DataItem {Name = "John"},
                     };
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        // Get data and use Linq to objects
        var filteredData = GetData().Where(i => i.Name.StartsWith("F")).ToList();

        // Bind to data 
        GridView1.DataSource = filteredData;
        GridView1.DataBind();
    }

    private IEnumerable<DataItem> GetData()
    {
        // Get data from your data source
        return _items;
    }
}

public class DataItem
{
    public string Name { get; set; }
}

If your data is an a database, then a good option is to use Linq to SQL (SQL Server only) or Linq to Entities (not just SQL Server), or Linq to Datasets (if you really have to).