我得到一个错误,试图查询我的数据库在ASP
本文关键字:查询 我的 数据库 ASP 错误 一个 | 更新日期: 2023-09-27 18:04:53
我试图让SqlDataReader工作,但我得到这个错误:
ExecuteReader: Connection属性未初始化。
我尝试用SqlDataReader = new SqlDataReader();
初始化它但是这又给了我一个错误。
protected void Button1_Click(object sender, EventArgs e)
{
SqlConnection con = new SqlConnection();
con.ConnectionString = "Data Source=BETSY''SQLEXPRESS;Initial Catalog=Sample;Integrated Security=True";
con.Open();
SqlCommand cmd = new SqlCommand("SELECT * FROM ShoppingList2, con");
SqlDataReader reader = cmd.ExecuteReader();
reader.Close();
con.Close();
}
"SELECT * FROM ShoppingList2, con"
"SELECT * FROM ShoppingList2", con
try this:
using (SqlConnection con = new SqlConnection("Data Source=BETSY''SQLEXPRESS;Initial Catalog=Sample;Integrated Security=True"))
{
con.Open();
using (SqlCommand com = con.CreateCommand())
{
// sql setup stuff here
using (SqlDataReader reader = com.ExecuteReader())
{
// read data here
}
}
}