を使用してデータを返そうとするとOracleDataReader
、
"Object reference not set to an instance of an object " at the line "odr =
ocmd.ExecuteReader();",
誰かが私が欠けている/間違ったことを提案できますか?
ありがとう
T
OracleConnection cn = null;
OracleDataReader odr = null;
OracleCommand ocmd = null;
String con1 = System.Configuration.ConfigurationManager.ConnectionStrings["HousingDBConnectionString"].ConnectionString;
cn = new OracleConnection(con1);
cn.Open();
string mysql = "SELECT stuff from tables";
OracleCommand cmd = new OracleCommand(mysql, cn);
odr = ocmd.ExecuteReader();
Label2.Text = "connection success";
ListBox1.Items.Clear();
while (odr.Read())
{
ListBox1.Items.Add(odr["TCY_CORRESPOND_NAME"].ToString());
}