一个解决方案是创建一个接收Open() 连接的OracleClob对象,然后我们将值作为字节数组写入它。
如果您使用的是EF和Context,则可以按如下方式访问 conectionString:
string connectionString = _context.Database.GetDbConnection().ConnectionString;
代码如下所示:
using OracleConnection connection = new(connectionString);
try
{
connection.Open(); //required
byte[] arrayByte = System.Text.Encoding.Unicode.GetBytes(audit.AuditRecord);
OracleClob oracleClob = new (connection);
oracleClob.Write(arrayByte, 0, arrayByte.Length);
var parameters = new OracleParameter[]
{
new OracleParameter("param1", OracleDbType.Varchar2, valueParam1, ParameterDirection.Input),
new OracleParameter("param_clob", OracleDbType.Clob, oracleClob, ParameterDirection.Input),
new OracleParameter("p_refcursor", OracleDbType.RefCursor, ParameterDirection.Output)
};
OracleCommand cmd= new("SCHEMA.STORED_PROCEDURE_NAME", connection)
{
CommandType = CommandType.StoredProcedure,
};
cmd.Parameters.AddRange(parameters);
cmd.ExecuteNonQuery();
//getting the returned values
var result = (OracleRefCursor)cmd.Parameters["p_refcursor"].Value;
var reader = result.GetDataReader();
reader.Read();
// To access the returned values
//reader.GetOracleValue(0)
//reader.GetOracleValue(1)
//reader.GetOracleValue(2)
}
finally
{
connection.Close();
}