求解决
堵刻 2011-10-23 08:40:15 private void Bind()
{
string id = Session["phoneid"].ToString();
SqlConnection sql = new SqlConnection(con);
sql.Open();
string com = "select *,price*num from cart where phoneid='" + id + "'";
SqlDataAdapter da = new SqlDataAdapter(com,sql);
DataSet ds = new DataSet();
da.Fill(ds);
float count = 0;
foreach (DataRow dr in ds.Tables[0].Rows)
{
count += Convert.ToSingle(dr[6]);
}
M_str_Count = count.ToString();
GridView1.DataSource = ds;
GridView1.DataBind();
sql.Close();
}
请问 count += Convert.ToSingle(dr[4]);中的dr[4]取出来的是什么值,我运行报错的值,我数据表里是没有的