[ASK] - Struct

Question

0.00/5 (No votes)

See more:

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

C#

class Program
  {
    static void Main(string[] args)
    {
      Add();
      Multiply();
      Console.ReadLine();
    }
    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.. :)

Posted 24-Aug-10 19:57pm

Teamsar Muliadi

Updated 24-Aug-10 19:58pm

v3

Add a Solution

Comments

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?

3 solutions

Solution 2

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

"Object reference not set to an instance of an object"

Posted 24-Aug-10 22:00pm

DaveyM69

Solution 1

Please, go to the following link to have a better understanding of structs

http://msdn.microsoft.com/en-us/library/ms173109.aspx[^]

http://msdn.microsoft.com/en-us/library/0taef578.aspx[^]
Please, let me know if you really want to know more... :)

Posted 24-Aug-10 20:44pm

senguptaamlan

Updated 24-Aug-10 20:48pm

v2

Comments

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.. :)

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

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

Mohammad Abdullah · Accepted Answer · 2010-08-25T13:32:00

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
like

S sd = new S();

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

sd.data1.Add(0, 3);

an so on for all variables