为什么或索引超出界限，怎么改啊

Question

OracleParameter[] para=new OracleParameter[]{};
string sql = "select * from tb_procurecatalog where referencecomefrom=@1";
if (Session["dic"] != null)
{
Dictionary dic = (Dictionary)Session["dic"];
foreach(KeyValuePair key in dic)
{
para[0] = new OracleParameter("@1", key.Value);

}
}
DataTable dt = ClassLibrary1.Class1.dt(sql, para);

Answer 1

数组长度为空，使用下标0肯定会下标越界