How to prepare oracle query with in clause in C#

string ids ="1,2,3,4,5";
string query="select * from employee where empid in (" + ids + " and ROWNUM <=10)";

string ids ="1,2,3,4,5";
string query="select * from employee where empid in (" + ids + " and ROWNUM <=10)";
OracleCommand cmd = new OracleCommand(query, con);
string[] lstIds = ids.Split(",").Select(s => (s).ToArray();
stringBuilder sb = new StringBuilder();
string strParameter = string.empty;
string Param = "Param";
for(int i = 0; i <= lstIds.Length - 1; i++)
{
    strParameter += i == 0 ? Param + i : ",:" + Param + i;
    if (i == 0)
        sb.Append(lstIds[1]);
    else
        sb.Append("," + lstIds[1]);
}

cmd.Parameters.Add(Param, sb.ToString());

OracleDataAdapter da = new OracleDataAdapter(cmd);
DataSet ds= new DataSet();
da.Fill(ds);