Assign 'null' value to a string.Format

Question

Source code:

sr.Body.RequestBody = string.Format

                                           ((string)configData.PostFSObj, obj1.AiConfiguration, obj1.AircraTypeIndex, obj1.Arrivadelaytime,

                                            obj1.ATAVOYAGEREPORT, obj1.ATDVOYAGEREPORT,

                                            obj1.Carrier, obj1.Departdelaytime, obj1.FlightLegCode, obj1.FlightNumber,

                                            obj1.OperationDay, obj1.Sctimeofarrival, obj1.timeofdeparture

                                            , obj1.TotalPassengers, dsStrProp, asStrProp, regStrProp);  
```CustomConfig.CommonFactory.WriteToFile("Request Obj => " + sr.Body.RequestBody, pr.ProcessID);

I have a result for obj1 as below:

"AiConfiguration": "Scheduled Service", "AircraTypeIndex": "7M8", "Arrivadelaytime": "", "ATAVOYAGEREPORT": null, "ATDVOYAGEREPORT": null, "CarrierIndex": "FZ", "Departdelaytime": null, "FlightLegCode": " ", "FlightNumber": 27, "OperationDay": "2024-03-28T00:00:00+05:30", "Sctimeofarrival": "2024-03-28T09:00:00Z", "timeofdeparture": null, "TotalPassengers": 0,  
  
but after convverting to string format:

 sr.Body.RequestBody : ATAVOYAGEREPORT : "","ATDVOYAGEREPORT:""  
I want sr.Body.RequestBody result as it is like  ATAVOYAGEREPORT : null please help me.

Answer 1

Instead of obj1.ATAVOYAGEREPORT, try to specify obj1.ATAVOYAGEREPORT?.ToString( ) ?? "null".

If it is a string, then use obj1.ATAVOYAGEREPORT ?? "null".

Answer 2

Hi @Rashmitha B ,

sr.Body.RequestBody = string.Format(
    "{0}: {1}, {2}: {3}, {4}: {5}, {6}: {7}, {8}: {9}, {10}: {11}, {12}: {13}, {14}: {15}, {16}: {17}, {18}: {19}, {20}: {21}, {22}: {23}, {24}: {25}, {26}: {27}, {28}: {29}, {30}: {31}, {32}: {33}",
    "AiConfiguration", obj1.AiConfiguration,
    "AircraTypeIndex", obj1.AircraTypeIndex,
    "Arrivadelaytime", obj1.Arrivadelaytime,
    "ATAVOYAGEREPORT", obj1.ATAVOYAGEREPORT != null ? "\"" + obj1.ATAVOYAGEREPORT + "\"" : "null",
    "ATDVOYAGEREPORT", obj1.ATDVOYAGEREPORT != null ? "\"" + obj1.ATDVOYAGEREPORT + "\"" : "null",
    "Carrier", obj1.Carrier,
    "Departdelaytime", obj1.Departdelaytime,
    "FlightLegCode", obj1.FlightLegCode,
    "FlightNumber", obj1.FlightNumber,
    "OperationDay", obj1.OperationDay,
    "Sctimeofarrival", obj1.Sctimeofarrival,
    "timeofdeparture", obj1.timeofdeparture != null ? "\"" + obj1.timeofdeparture + "\"" : "null",
    "TotalPassengers", obj1.TotalPassengers,
    dsStrProp,
    asStrProp,
    regStrProp
);

CustomConfig.CommonFactory.WriteToFile("Request Obj => " + sr.Body.RequestBody, pr.ProcessID);

Best Regards.

Jiachen Li

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