How to retreive data from database to a table in asp webform

Good day i created a table to be displayed on A adminlte template but it is not displaying the data from the database on the table

namespace WebApplication4
{
public partial class transahis : System.Web.UI.Page
{
SqlDataAdapter da;
DataSet ds = new DataSet();
StringBuilder htmlTable = new StringBuilder();
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
binddata();
}
}
private void binddata()
{
SqlConnection con = new SqlConnection();
;
con.ConnectionString = @"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=C:\Users\odt\Documents\login.mdf;Integrated Security=True;Connect Timeout=30";
//con.Open();
// SqlCommand cmd = new SqlCommand();
//cmd.CommandText = "select * from [log] ";
SqlCommand cmd = new SqlCommand("SELECT * FROM log ", con);
da = new SqlDataAdapter(cmd);
da.Fill(ds);
con.Open();
cmd.ExecuteNonQuery();
con.Close();
//cmd.Connection = con;
// SqlDataReader dt = cmd.ExecuteReader();
htmlTable.Append("");
htmlTable.Append("IDNamepassword");
if (!object.Equals(ds.Tables[0], null))
{
if (ds.Tables[0].Rows.Count > 0)
{
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
htmlTable.Append("");
htmlTable.Append("" + ds.Tables[0].Rows[i]["Id"] + "");
htmlTable.Append("" + ds.Tables[0].Rows[i]["username"] + "");
htmlTable.Append("" + ds.Tables[0].Rows[i]["password"] + "");
/* htmlTable.Append("" + ds.Tables[0].Rows[i]["ContactNo"] + "")*/
;
htmlTable.Append("");
}
htmlTable.Append("");
hph.Controls.Add(new Literal { Text = htmlTable.ToString() });
}
else
{
htmlTable.Append("");
htmlTable.Append("There is no Record.");
htmlTable.Append("");
}
}
}
}
}