vs2008翻页代码

请问，我的girdview的翻页代码怎么写

我只知道定义AllowPaging="True"和PageSize="12"，还要写什么事件，什么程序

请附上例子或代码，万分感谢

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

public void BindGridView()
{
try
{

string conn = System.Configuration.ConfigurationManager.AppSettings["connstring"];
SqlConnection connections = new SqlConnection(conn );
connections.Open();
string sql = "";
SqlDataAdapter da = new SqlDataAdapter(str, connections);
DataSet ds = new DataSet();
da.Fill(ds);
GridView1.DataSource = data;
GridView1.DataBind();
connections.Close();
}
catch (Exception ex)
{
throw ex;
}
}

添加一个PageIndexChanging事件，BindGridView()方法是用来绑定数据的。

girdview自带分页程序的

只要勾选就行了