C# Code:

public partial class Form1 : Form
{
   public Form1()
   {
      InitializeComponent();
   }
   
   /// <summary>
   /// 产品数据
   /// </summary>
   private DataTable StockData
   {
      get
      {
         DataTable dt = new DataTable();
         dt.Columns.Add("StockCode", typeof(string));
         dt.Columns.Add("StockName", typeof(string));
         dt.Columns.Add("Price", typeof(decimal));
         
         dt.Rows.Add(new object[] { "CS2.0", "开发框架-V2.0", 100.11 });
         dt.Rows.Add(new object[] { "CS2.2", "开发框架-V2.2", 200.22 });
         dt.Rows.Add(new object[] { "CS3.0", "开发框架-V3.0", 300.33 });
         
         dt.AcceptChanges();
         
         return dt;
      }
   }
   
   /// <summary>
   /// 销售订单明细数据
   /// </summary>
   private DataTable SaleDetailData
   {
      get
      {
         DataTable dt = new DataTable();
         dt.Columns.Add("StockCode", typeof(string));
         dt.Columns.Add("StockName", typeof(string));
         dt.Columns.Add("SalePrice", typeof(decimal));
         
         dt.Rows.Add(new object[] { "CS2.0", "开发框架-V2.0", 100.11 });
         
         dt.AcceptChanges();
         
         return dt;
      }
   }
   
   private void Form1_Load(object sender, EventArgs e)
   {
      //绑定LookupEdit的数据源
      txtStock.Properties.DisplayMember = "StockName";
      txtStock.Properties.ValueMember = "StockCode";
      txtStock.Properties.DataSource = StockData;
      
      //绑定表格中LookupEdit的数据源
      RepositoryItemLookUpEdit edit = gridColumn1.ColumnEdit as RepositoryItemLookUpEdit;
      edit.Properties.DisplayMember = "StockName";
      edit.Properties.ValueMember = "StockCode";
      edit.Properties.DataSource = StockData;
      
      //手工绑定EditValueChanged事件
      edit.EditValueChanged = new EventHandler(edit_EditValueChanged);
      
      //设置表格的数据源
      gridControl1.DataSource = SaleDetailData;
   }
   
   private void edit_EditValueChanged(object sender, EventArgs e)
   {
      LookUpEdit edit = sender as LookUpEdit;
      
      if (edit.EditValue != null)
      {
         //取资料行，数据源为DataTable, 资料行是DataRowView对象。
         object o = edit.Properties.GetDataSourceRowByKeyValue(edit.EditValue);
         
         if (o is DataRowView)
         {
            DataRowView rv = o as DataRowView;
            gridView1.SetFocusedRowCellValue("SalePrice", rv.Row["Price"]);//取单价
         }
      }
      else
      {
         labelControl4.Text = "0.00";
      }
   }
   
   private void txtStock_EditValueChanged(object sender, EventArgs e)
   {
      if (txtStock.EditValue != null)
      {
         //取资料行，数据源为DataTable, 资料行是DataRowView对象。
         object o = txtStock.Properties.GetDataSourceRowByKeyValue(txtStock.EditValue);
         
         if (o is DataRowView)
         {
            DataRowView rv = o as DataRowView;
            labelControl4.Text = rv.Row["Price"].ToString(); //取单价
         }
      }
      else
      {
         labelControl4.Text = "0.00";
      }
   }
   
}

//来源:C/S框架网(www.csframework.com) QQ:1980854898