/// <summary> 
/// 实现数据绑定功能 
/// </summary> 
private void BindToDataGird()   
{ 
 SqlConnection con = DB.CreateCon(); 
 SqlDataAdapter sda = new SqlDataAdapter(); 
 sda.SelectCommand = new SqlCommand("select employeeID,FirstName,LastName,Title,BirthDate from employees ", con); 
 DataSet ds = new DataSet(); 
 sda.Fill(ds, "emp");   //将查询到的数据添加到DataSet中。 
 this.GridView1.DataKeyNames =new string[]{ "employeeID"}; //DataKeyNames的使用 
 this.GridView1.DataSource = ds.Tables["emp"];  
 this.DataBind(); 
} 

DataKey key = GridView1.DataKeys[e.RowIndex];//其中e为GridViewDelete（或者Edit）EventArgs e 
string empID = key[0].ToString(); 

protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e) 
{ 
 this.GridView1.PageIndex = e.NewPageIndex; 
 this.BindToDataGird(); 
} 

protected void GridView1_Sorting(object sender, GridViewSortEventArgs e) 
{ 
 if (ViewState["order"] == null)  //使用ViewState设置双向排序。 
 { 
  ViewState["order"] = "ASC"; 
 } 
 else 
 { 
  if (ViewState["order"].ToString() == "ASC") 
  { 
   ViewState["order"] = "DESC"; 
  } 
  else 
  { 
   ViewState["order"] = "ASC"; 
  } 
 } 
 //数据绑定显示 
 SqlConnection con = DB.CreateCon(); 
 SqlDataAdapter sda = new SqlDataAdapter(); 
 sda.SelectCommand = new SqlCommand("select employeeID,FirstName,LastName,Title,BirthDate from employees ", con); 
 DataSet ds = new DataSet(); 
 sda.Fill(ds, "emp"); 
 ds.Tables["emp"].DefaultView.Sort = e.SortExpression + " " + ViewState["order"].ToString(); //设置排序 
 this.GridView1.DataSource = ds.Tables["emp"].DefaultView; //将表的默认视图作为数据源。 
 this.DataBind(); 
} 

protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e) 
{ 
 DataKey key = GridView1.DataKeys[e.RowIndex]; 
 string empID = key[0].ToString(); 
 SqlConnection con = DB.CreateCon(); 
 SqlCommand cmd = new SqlCommand("delete from employees where employeeID= '"+empID+"'" , con); 
 con.Open(); 
 cmd.ExecuteNonQuery(); 
 this.BindToDataGird(); 
} 

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e) 
{ 
 this.GridView1.EditIndex = e.NewEditIndex; 
 this.BindToDataGird(); 
} 
protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e) 
{ 
 this.GridView1.EditIndex = -1; //设置索引值为负取消编辑。 
 this.BindToDataGird(); 
} 
protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e) 
{ 
 DataKey key = GridView1.DataKeys[e.RowIndex]; 
 string empID = key[0].ToString(); 
 string lastName=((TextBox)(GridView1.Rows [e.RowIndex ] .Cells [2].Controls [0])).Text ; //将GridView中某列中控件强制转换为TextBox，然后取出它的值。 
 Response.Write(empID +"&" + lastName ); //用于测试。 
 this.GridView1.EditIndex = -1; 
 this.BindToDataGird(); 
}