How to generate dynamically object based on input parameters?

Question

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I have to create a object based on the input parameter received in a method.
there two possible objects I need to create. Both objects will be having 9 same properties & just one property will be different based on the input received.

C#

public SomeDisocuntObject GetDiscountDetails(string discountType)
{
if(discountType==PERCENTAGEDISCOUNT)
{
//create a object which has Discount% property along with other some same props. & return obj
}
if(discountType==AMOUNTDISCOUNT)
{
//create a object which has DiscountAmount property along with other some same props. & return obj

}

}

What I have tried:

How to achieve this logic, I think Inheritance will solve this problem. any code snippet will be appreciated.

Posted 20-Sep-22 0:45am

Virendra S from Bangalore, Karnataka

Updated 20-Sep-22 1:12am

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Comments

Richard MacCutchan 20-Sep-22 7:09am

Just add the extra property, and define the values as an enum type.

Virendra S from Bangalore, Karnataka 20-Sep-22 8:06am

What to do you mean by Just add the extra property? any reference pls. how can I remove the the existing property of a class

Richard MacCutchan 20-Sep-22 8:55am

I assume that you have some variable in the class that contains a number that represents either the percentage or the value of the discount. If that is the case then you just need another property which identifies which discount type that value holds.

2 solutions

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OriginalGriff · Answer 1 · 2022-09-20T01:12:00

Solution 2

Use a switch rather than if - it's "tidier" code.
Then just use an initialiser:

C#

switch (discountType)
   {
   default: throw new ArgumentException($"Unknown discount type \"{discountType}\"");
   case PERCENTAGEDISCOUNT:
      return new Discount{Discount = myDiscPercent, ...};
   case AMOUNTDISCOUNT:
      return new Discount{DiscountAmount = myDiscAmount, ...};
   ...
   }

Posted 20-Sep-22 1:12am

OriginalGriff

Comments

Himansh jain 20-Sep-22 7:20am

Sir, can you please debug this code..I am not able to download the correct file.
Please refer to the question below.

https://www.codeproject.com/Questions/5342610/How-do-I-download-a-file-in-xls-format

Richard MacCutchan 20-Sep-22 7:27am

Ignore above comment, OP thinks Excel files are text.

OriginalGriff 20-Sep-22 7:39am

Ah. Research not his strong point then ... :sigh:

Richard MacCutchan 20-Sep-22 7:41am

Solution 1

class Discount
{
prop {get;set;} //some random properties
string PERCENTAGEDISCOUNT {get;set;}
string AMOUNTDISCOUNT {get;set;}

}

public Discount GetDiscountDetails(string discountType)
{
   Discount dis = new Discount();
if(discountType==PERCENTAGEDISCOUNT)
{
   dis.(your properties)
//create a object which has Discount% property along with other some same props. & return obj
}
if(discountType==AMOUNTDISCOUNT)
{
  dis.(your properties)
//create a object which has DiscountAmount property along with other some same props. & return obj

}
return dis

}

Posted 20-Sep-22 1:05am

Himansh jain

Comments

Richard MacCutchan 20-Sep-22 7:10am

Why would you use strings for simple property values?

Himansh jain 20-Sep-22 7:12am

anything can be used ..by default I put the strings..it can be modified according to his requirement.

Virendra S from Bangalore, Karnataka 20-Sep-22 7:34am

@Himansh when I return dis object it will be having both props PERCENTAGEDISCOUNT & AMOUNTDISCOUNT, am I right?

Actually this return object will be passed to some other libray method to do some calculations. so that library expects single property in a object, it can be either PERCENTAGEDISCOUNT or AMOUNTDISCOUNT. not both props in the dis object.

Himansh jain 20-Sep-22 7:41am

you can try putting null check