? string sql = "select * from? [product] where 1=1";
??????? //商品名稱不為空
??????? if (shopName != "")
??????? {
??????????? sql += " and [proName]='" + shopName + "'";
??????? }
??????? //商品編號不為空
??????? if (Number != "")
??????? {
??????????? sql += " and [proOwnerId]='" + Number + "'";
??????? }
??????? //商品說明不為空
??????? if (shopRemark != "")
??????? {
??????????? sql += " and [promiaoshu]=" + shopRemark + "'";
??????? }
??????? //一級類別不為空
??????? if (dropClass != "")
??????? {
??????????? sql += " and [proclass]='" + dropClass + "'";
??????? }
??????? //二級類別不為空
??????? if (dropclass1 != "")
??????? {
??????????? sql += " and [class]='" + dropclass1 + "'";
??????? }
??????? //三級類別不為空
??????? if (dropclass2 != "")
??????? {
??????????? sql += " or [ThreeClass]='" + dropclass2 + "'";
??????? }

轉(zhuǎn)載于:https://www.cnblogs.com/freexiaoyu/archive/2008/05/24/1206459.html

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