Using post request in switch case and enum

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C#

Xamarin

I have one Enum where i have defined three string
name
address
Date
and i have one method with one string parameter.
i want to use switch case
i am using post request in REST api. i want to use switch case and once use enter name or address or date so my code should be working and i need to get the result
please give me some nice suggestion.
i am sending my codes please check

What I have tried:

public enum SearchISD
     {
         InvoiceNumber,
         ShukranNumber,
         Date
     }
     private SearchISD _ISD;
     public SearchISD ISD
     {
         get { return _ISD; }
         set { _ISD = value; }
     }


     public async Task<ResponseResult<PrintResponse>> FetchPrintDataFromISD(string transactionId)
     {
         try
         {
             string url = $"{AppConstants.BASEURL}{string.Format(AppConstants.GetPrintReceiptUrl, transactionId)}";
             var result = await restService.PostAsync<PrintResponse>(url, false);
             return result;
         }
         catch (HttpException ex)
         {
             return new ResponseResult<PrintResponse>
             {
                 ErrorMessage = ex.ErrorResponse.MoreInformation != null ? ex.ErrorResponse.MoreInformation.ToString() : ex.ErrorResponse.HttpMessage.ToString(),
                 ErrorCode = ex.ErrorResponse.HttpMessage,
                 ResponseStatus = false,
                 WebStatus = ex.ErrorResponse.WebStatus
             };

         }
         catch (Exception ex)
         {
             return new ResponseResult<PrintResponse>
             {
                 ErrorMessage = ex.Message,
                 ResponseStatus = false,
                 WebStatus = Status.Failed
             };
         }

     }