c# 参数化问题？ 急

[wsjrzjp2012]

string sql_filelist = "";
SqlParameter[] cmd_filelist =new SqlParameter[1];
if (Request.QueryString["pdid"]!=null)
{
sql_filelist = "select Pid,Ptitle,Pcontent,Pnum,Psize,Pprice,PDID,PDN,PXID,PXN,dpic,Ppic,Paddtime from ProductList where PDID=@PDID order by Pid desc";
cmd_filelist={ new SqlParameter("@PDID", Request.QueryString["pdid"]) };
}
if (!string.IsNullOrEmpty(Request.QueryString["pxid"]))
{
sql_filelist = "select Pid,Ptitle,Pcontent,Pnum,Psize,Pprice,PDID,PDN,PXID,PXN,dpic,Ppic,Paddtime from ProductList where PxID=@PxID order by Pid desc";
cmd_filelist ={ new SqlParameter("@PxID", Request.QueryString["PxID"]) };
}
if (!string.IsNullOrEmpty(Request.QueryString["pbid"]))
{
sql_filelist = "select Pid,Ptitle,Pcontent,Pnum,Psize,Pprice,PDID,PDN,PXID,PXN,dpic,Ppic,Paddtime from ProductList where PBrandID=@PbID order by Pid desc";
cmd_filelist ={ new SqlParameter("@PbID", Request.QueryString["PbID"]) };
}

这样写老是报：
cmd_filelist={ new SqlParameter("@PDID", Request.QueryString["pdid"]) };
这行的
无效的表达式项“{”

[zmhkobe]

cmd_filelist={ new SqlParameter("@PDID", Convert.toInt32(Request.QueryString["pdid"])) };

[z6646339001]

好像数组像这样赋值“{ new SqlParameter("@PDID", Convert.toInt32(Request.QueryString["pdid"])) };”只有在数组创建的时候可以，但是一旦new了一次了就不行了，你只有改成cmd_filelist[0]=Request.QueryString["pdid"]);

[人生难得一只鸡]

LIKE THIS

cmd_filelist[0]=new SqlParameter("@PDID", Request.QueryString["pdid"]);