combox已绑定，怎么通过ValueMember找到对应的哪项？求解

Question

如题

Answer 1

绑定的是 table 还是 List《实体》 集合？ objectbind{id value}
ValueMember="列名value"
ValueMember="实体需要的名称value"

Answer 2

combox.datasource= ds.Tables[0].DefaultView;
ds.valuememeber="要绑定的列名"

Answer 3

写个demo给你
前台一个TextBox和一个ComBoBox            DataTable data = new DataTable();
            data.Columns.Add("column1", typeof(int));
            data.Columns.Add("column2", typeof(string));
            DataRow dr1 = data.NewRow();
            dr1["column1"] = 1;
            dr1["column2"] = "NO.1";
            DataRow dr2 = data.NewRow();
            dr2["column1"] = 2;
            dr2["column2"] = "NO.2";
            DataRow dr3 = data.NewRow();
            dr3["column1"] = 3;
            dr3["column2"] = "NO.3";
            DataRow dr4 = data.NewRow(); 
            data.Rows.Add(dr1);
            data.Rows.Add(dr2);
            data.Rows.Add(dr3);
            this.comboBox1.DataSource = data;
            this.comboBox1.DisplayMember = "column2";
            this.comboBox1.ValueMember = "column2";
  private void textBox5_TextChanged(object sender, EventArgs e)
        {
            string sn = "column2 like '%" + this.textBox5.Text.Trim() + "%'";            DataRow[] dr = data.Select(sn);//其实你要找的数据就放在dr里面
            foreach (DataRow d in dr)
            {
                this.comboBox1.DataSource = d.ItemArray.ToList();
                this.comboBox1.DisplayMember = d.ItemArray[1].ToString();
            }
        }