OracleCommandExtensionメソッドでラップできます:
public static class OracleCommandExtension
{
public static OracleCommand AddParameterCollection<TValue>(this OracleCommand command, string name, OracleType type, IEnumerable<TValue> collection)
{
var oraParams = new List<OracleParameter>();
var counter = 0;
var collectionParams = new StringBuilder(":");
foreach (var obj in collection)
{
var param = name + counter;
collectionParams.Append(param);
collectionParams.Append(", :");
oraParams.Add(new OracleParameter(param, type) { Value = obj });
counter++;
}
collectionParams.Remove(collectionParams.Length - 3, 3);
command.CommandText = command.CommandText.Replace(":" + name, collectionParams.ToString());
command.Parameters.AddRange(oraParams.ToArray());
return command;
}
}