首先要寫連接字符串

可以在web.config里寫上

代碼如下:
<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>

然后再后臺調用
代碼如下:
string orclcon = ConfigurationManager.ConnectionStrings["oracleson"].ConnectionString;

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

然后要新建一個數據庫連接對象

代碼如下:
OracleConnection conn = new OracleConnection(orclcon)

OracleConnection conn = new OracleConnection(orclcon)

創建一個OracleCommand對象來對數據庫進行操作
代碼如下:
OracleCommand cmd = conn.CreateCommand()

OracleCommand cmd = conn.CreateCommand()打開連接

conn.Open();操作就行了

代碼如下:
cmd.CommandText = "insert into T_12(AAAA)values(:a)";
                    cmd.Parameters.AddWithValue(":a", TextBox1.Text);  //參數替換oracle數據庫要用: sqlserver數據庫是@
                    cmd.ExecuteNonQuery();

cmd.CommandText = "insert into T_12(AAAA)values(:a)";
                    cmd.Parameters.AddWithValue(":a", TextBox1.Text);  //參數替換oracle數據庫要用: sqlserver數據庫是@
                    cmd.ExecuteNonQuery();