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Hi experts, i'm a newbie in C#. I wanna ask u about struct in C#. I've a problem about this one :

class Program
    static void Main(string[] args)
    private static void Add()
      S sd = new S();
      sd.data1.Add(0, 3);
      sd.data1.Add(1, 5);
      sd.bil1 = sd.data1[0];
      sd.bil2 = sd.data1[1];
      int hasil = sd.bil1 + sd.bil2;
      Console.WriteLine("Hasil penjumlahan : {0}", hasil);
    private static void Multiply()
      S sd = new S();
      sd.data1.Add(0, 6);
      sd.data1.Add(1, 2);
      sd.bil1 = sd.data1[0];
      sd.bil2 = sd.data1[1];
      int hasil = sd.bil1 * sd.bil2;
      Console.WriteLine("Hasil perkalian : {0}", hasil);
    struct S
      public IDictionary<int, int> data1 { get; set; }
      public int bil1;
      public int bil2;

There is an error occured :( , would u tell me how to use struct in good programming based on my problem above.. :( not based on my mistake.
Cause, i'm really want to understand about struct.. but in a good programming. Thank you.. :)
Updated 24-Aug-10 20:58pm
Member 14375245 16-May-19 14:17pm    
I have gizmox webgui installed for visual studio 2010 but when open form ask for licensing but there ia no way to continue as trial also. How can i start to use?

The error message normally gives a clue to the reason for the exception.

"Object reference not set to an instance of an object"
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when u use data1 from struct S u must implement ur
interface variable .

acoording to ur code
when u use

"sd.data1.Add(0, 3);"
an exception messqage is SHOWN
"Object reference not set to an instance of an object."

so u must implement every interface variable of struct S at every use
of data1 data1

S sd = new S();

sd.data1=new Dictionary<int,int>();

sd.data1.Add(0, 3);

an so on for all variables
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Teamsar Muliadi 25-Aug-10 22:18pm    
Thank you Mohammad :)
Please, go to the following link to have a better understanding of structs[^][^]
Please, let me know if you really want to know more... :)
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Teamsar Muliadi 25-Aug-10 2:54am    
Hehehehe... you have just made a joke.. :D It's need much time to read one by one the article.. :) Would u make a simple sample for guiding me a good programming in struct based on my problmem ?.. hehehe.. :) Thank u.
senguptaamlan 25-Aug-10 3:24am    
making a good programming needs an indepth knowledge of the programming construct that you want to use, with respect to memory, performance and scope..if you want to use struct effectively in a good way then you obviously need to invest some time..code project is not msdn guide which gives you How Tos of various programming language. I can easily give you 10 structure example, but deciding whether that particular implementation suits your requirement needs indept knowledge.
Teamsar Muliadi 25-Aug-10 5:36am    
Thank u.. :)

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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