oracle使用散列表Hashtable注意事项

语句定义：

public int Execute(string sql, Hashtable ht = null)

{

using (OracleConnection conn = new OracleConnection(this.connStr))

{

try

{

if (ht == null || ht.Count == 0)

{

if (conn.State != ConnectionState.Connecting)

conn.Open();

OracleCommand cmd = new OracleCommand(sql, conn);

int n = cmd.ExecuteNonQuery();

cmd.Connection = null;

return n;

}

else

{

if (conn.State != ConnectionState.Connecting)

conn.Open();

OracleCommand cmd = new OracleCommand(sql, conn);

foreach (DictionaryEntry de in ht)

{

cmd.Parameters.Add(new OracleParameter(de.Key.ToString(), de.Value.ToString()));

}

int n = cmd.ExecuteNonQuery();

cmd.Connection = null;

return n;

}

}

catch (Exception e)

{

throw e;

}

}

}

1、sql语句用到的参数个数和ht中的对象个数必须一致，否则执行报错；