What would be the equivalent of this in C#? This is Vb.NET code.

VB Code:
  1. Dim xmlParams As String
  2.  
  3.             Dim certNum As String = "4609927"
  4.  
  5.             xmlParams = "<Root>"
  6.             xmlParams = xmlParams & "<Param Name=""p_Cert_Num"" Value=""" & certNum & """ />"
  7.             xmlParams = xmlParams & "<Param Name=""cur_CaseReqInfo"" Direction=""" & System.Data.ParameterDirection.Output & """ OraDbType=""" & System.Data.OracleClient.OracleType.Cursor & """ />"
  8.             xmlParams = xmlParams & "</Root>"

once the xmlParams string is formed, I want to be able to load it in xmlDocument but could not build this string in C#.