public partial class _Default : System.Web.UI.Page
{
SqlConnection con = new SqlConnection("Data Source=LENOVO;Initial Catalog=dbMACARON;Integrated Security=True"); SqlCommand com = new SqlCommand("Select * from PRODUCT");
public void Bind()
{
SqlDataAdapter da = new SqlDataAdapter(com);
DataSet ds = new DataSet();
con.Open();
com.Connection = con;
com.ExecuteNonQuery();
da.Fill(ds, "PRODUCT");
GridView1.DataSource = ds;
GridView1.DataBind();
con.Close();
}
protected void Page_Load(object sender, EventArgs e)
{
con.Open();
com.Connection = con;
SqlDataReader dr;
dr = com.ExecuteReader();
string id = "0";
Source Error:
Line 31: protected void Page_Load(object sender, EventArgs e)
Line 32: {
Line 33: con.Open();
Line 34: com.Connection = con;
Line 35: SqlDataReader dr;
它说我的con.Open错误无法打开数据库，我怎么了？对不起，我是新鲜的，所以我需要指导，
有一些源错误告诉我
如果您使用的是SQL Express Edition，请尝试以下操作：
SqlConnection con = new SqlConnection("Data Source=.\SQLExpress;Initial Catalog=dbMACARON;Integrated Security=True");
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我来说两句