public partial class Form1 : Form
    {
        BindingSource source;
        public Form1()
        {
            InitializeComponent();
            List<Source> list = new List<Source>();
            list.Add(new Source
            {
                ID = "1",
                Name = "c#"
            });
            list.Add(new Source
            {
                ID = "2",
                Name = "JAVA"
            });
            source = new BindingSource();
            source.DataSource = list;
            this.dataGridView1.DataSource = source;
        }

        private void textBox1_TextChanged(object sender, EventArgs e)
        {
            source.Filter = " '%" + textBox1.Text.Trim().ToUpper() + "%'";
        }
    }
    public class Source
    {
        public string ID { get; set; }
        public string Name { get; set; }
    }

Filter无效。。请问高手为什么？？网上查了。必须用datatable或dataset做数据源。。如果非要用list。。。要怎么处理？？神人进。。。