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connectionStrings>
    add name="oracleson" connectionString="Data Source=dingsenorcl;Persist Security Info=True;User ID=ds;Password=ds;Unicode=True" providerName="System.Data.OracleClient"/>
  /connectionStrings>

connectionStrings>
    add name="oracleson" connectionString="Data Source=dingsenorcl;Persist Security Info=True;User ID=ds;Password=ds;Unicode=True" providerName="System.Data.OracleClient"/>
  /connectionStrings>

string orclcon = ConfigurationManager.ConnectionStrings["oracleson"].ConnectionString;

  string orclcon = ConfigurationManager.ConnectionStrings["oracleson"].ConnectionString;

OracleConnection conn = new OracleConnection(orclcon)

OracleConnection conn = new OracleConnection(orclcon)

OracleCommand cmd = conn.CreateCommand()

OracleCommand cmd = conn.CreateCommand()打开连接

cmd.CommandText = "insert into T_12(AAAA)values(:a)";
                    cmd.Parameters.AddWithValue(":a", TextBox1.Text);  //参数替换oracle数据库要用: sqlserver数据库是@
                    cmd.ExecuteNonQuery();

cmd.CommandText = "insert into T_12(AAAA)values(:a)";
                    cmd.Parameters.AddWithValue(":a", TextBox1.Text);  //参数替换oracle数据库要用: sqlserver数据库是@
                    cmd.ExecuteNonQuery();