在用户注册的时候需要根据不同的用户类型，重数据库中筛选出不同的产品提供给用户。想想，效果最好的只能是无刷新的方法了。
前台脚步：(js)
function fillProduction()
{
var dwl = document.all("DropdownlistLevel");
var htp = new ActiveXObject("microsoft.xmlhttp");
var url = "reg.aspx?fp=" + dwl.value; htp.open("POST",url,false);
htp.setRequestHeader("Content-Type","application/x-www-form-urlencoded") htp.send();
var str = htp.responseText;
if (str != "")
{
var mydata = str.split("$");
if(mydata[0] != 0)
{
for( var i=1;i<=mydata[0];i++ )
{
var tmp = mydata[i].split("@");
var item = new Option();
item.text = tmp[0] + "|" + tmp[1] + " BV"; item.value = tmp[2]; document.submit.DropDwonListProduction.options[i-1] = item;
}
document.submit.hidpid.value = document.submit.DropDwonListProduction.value;
}
else
{
var len = document.submit.DropDwonListProduction.options.length;
for(var i=len-1;i>=0;i--)
{
document.submit.DropDwonListProduction.options.remove(i);
}
document.submit.hidpid.value = "";
}
}
htp = null;
}
后台编码：
private void fillProduction()
{
string sql;
sql = "select pgr_prod_descr,pgr_bv_value,pgr_prod_grp_cd from prod_grp t where t.pgr_bv_value = (select dal_bv from def_acct_level where dal_id = " + Request["fp"] + ")";
DataTable dt;
dt = SQLHelper.FillDataTable(SQLHelper.CONN_STRING,CommandType.Text,sql);
string tmp;
if (dt.Rows.Count >0 )
{
tmp = dt.Rows.Count.ToString() + "$";
for(int i=0;i<=dt.Rows.Count-1;i++)
{
tmp = tmp + dt.Rows[i][0].ToString() + "@" + dt.Rows[i][1].ToString() + "@" + dt.Rows[i][2].ToString() + "$";
}
}
else
{
tmp = "0$";
}
Response.Write(tmp);
}