我正在尝试从datatable获取 usert_id 值并将其分配给会话变量,但我无法在我的代码中获取user_id。我怎么能这样做?
try
{
conn.Open();
MySqlCommand cmd = new MySqlCommand("Select * from students where user_name='" + loginname.Text + "' and user_password ='" + password.Text + "'", conn);
MySqlDataAdapter da = new MySqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
if (dt.Rows.Count > 0)
{
ShowMessage(dt.Row['.user_id.']); //<-- Problem happens here
Session["user_id"] = "bar";
Response.Redirect("dashboard.aspx");
}
else
{
Response.Write("<script>alert('Please enter valid Username and Password')</script>");
}
}
答案 0 :(得分:3)
.user_id。不是一个Row索引,我怀疑它是列名...你没有用圆点包围它吗?我认为它应该使用Row s 而不是Row和双引号:
ShowMessage(dt.Rows[0]["user_id"].ToString());