谁能帮我看一下。。点击button1向数据库中插入一条数据，并绑定到gridview1，更新updatepanel1，在更新时我点击“取消”来取消异步回送。结果数据照样插入到表中，页面不更新了。我想要的效果是当点击“取消”的时候就不像数据库中增加数据。。怎么实现？

protected void Button1_Click1(object sender, EventArgs e)

{

System.Threading.Thread.Sleep(3000);

string connstr=WebConfigurationManager.ConnectionStrings["mingcai_user_conn"].ConnectionString;

SqlConnection conn = new SqlConnection(connstr);

try

{

conn.Open();

SqlCommand cmd = new SqlCommand("o_income", conn);

cmd.CommandType = CommandType.StoredProcedure;

cmd.Parameters.AddWithValue("@Tname", 0);

cmd.Parameters.AddWithValue("@userId", "9a23d3d4-c541-4d5b-9faa-f9a8cb10d505");

cmd.Parameters.AddWithValue("@inname", "哈哈");

cmd.Parameters.AddWithValue("@tmoney", "1234567");

cmd.Parameters.AddWithValue("@inwhere", "小金库");

cmd.Parameters.AddWithValue("@tdate", "2012-7-8");

cmd.Parameters.AddWithValue("@mood", "shuang");

cmd.Parameters.AddWithValue("@remark", "ceshi");

cmd.ExecuteNonQuery();

GridView1.DataBind();

}

catch (Exception ex)

{

Label1.Text = ex.Message;

}

}

DataKeyNames="id" DataSourceID="SqlDataSource2">

ReadOnly="True" SortExpression="id" />

SortExpression="userid" />

SortExpression="in_name" />

SortExpression="tmoney" />

SortExpression="inwhere" />

SortExpression="remark" />

SortExpression="insert_time" />

ConnectionString="Data Source=DEVELOP-SERVER\OCHENGSHI;Initial Catalog=mingcai_database1;User ID=mc_admin"

ProviderName="System.Data.SqlClient" SelectCommand="SELECT * FROM [income]">

οnclick="Button1_Click1" />

runat="server" Text="取消" OnClientClick="abortTask()" />

function abortTask() {

var obj = Sys.WebForms.PageRequestManager.getInstance();

if (obj.get_isInAsyncPostBack())

obj.abortPostBack();

alert("终止!");

}