Multiple value

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Hi,

How can I keep multiple values in a single variable when it loop for 3 times and return all value?

ex:

grocery(egg,apple,nut);
grocery(wine,rice,bread);
grocery(bread,egg,flour);

return grocery;--> return all 3 value.

Posted 24-Aug-10 19:47pm

MissNano

Updated 24-Aug-10 22:51pm

Dalek Dave

v2

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Dalek Dave 25-Aug-10 4:51am

Minor Edit for Grammar.

Christian Graus 25-Aug-10 5:07am

This is obviously homework, and the extra questions you're asking below make me think you're a bit confused and really need to talk to your teacher.

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senguptaamlan · Answer 1 · 2010-08-24T20:36:00

Use the following code for creating a generic string list and add item in it:

System.Collections.Generic.List<string> itemList = new System.Collections.Generic.List<string>();
itemList.Add("egg");
itemList.Add("apple");
itemList.Add("nut");

Now at the time of iterating the list use foreach statement like

C#

foreach (string item in itemList)
        {
            Console.WriteLine(item);
        }

Simple...isn't it? :)

Venkatesh Mookkan · Answer 2 · 2010-08-24T20:48:00

Solution 3

Write a class derived from Collection class. Override ToString() to loop and return all the items in the class. Like the example below:

C#

using System;
using System.Collections.ObjectModel;
using System.Text;
public class Groceries : Collection<string>
{
    public Groceries()
    {
    }
    public override string ToString()
    {
        StringBuilder result = new StringBuilder();
        foreach (string item in this.Items)
        {
            if (result.Length > 0)
            {
                result.Append(", ");
            }
            result.Append(item);
        }
        return result.ToString();
    }
}

Posted 24-Aug-10 20:48pm

Venkatesh Mookkan

Updated 24-Aug-10 22:49pm

v2

Comments

senguptaamlan 25-Aug-10 4:04am

can you provide a sample code to achieve this???

Venkatesh Mookkan 25-Aug-10 4:49am

I have updated my answer. Please check it out. Vote my answer, if it is helpful.

Dalek Dave 25-Aug-10 4:52am

Very Concise Answer!

senguptaamlan 25-Aug-10 4:55am

if the item contains a "," then what will happen ??? something like
objGrocerries.Add("egg","apple","abc,xyz");

Venkatesh Mookkan 25-Aug-10 4:55am

Thank you.

Venkatesh Mookkan 25-Aug-10 4:58am

Here you cannot add grocies.Add("A", "B");

You are supposed to add like,
grocies.Add("A");
grocies.Add("B");
grocies.Add("C");

Moreover Object Oriented programming to write precise code.

Come to your point, mention a grocery which has "," in its name.

senguptaamlan 25-Aug-10 5:00am

with respect to generality....anything can be added which will be nothing but a string, so I believe making a particular character as a static delimiter is not worthy...and moreover if the BCL provides us the generic list then why to reinvent the wheel again ???

Venkatesh Mookkan 25-Aug-10 5:09am

@senguptaamlan, this is a sample code which give a direction for the questioner. It is upto the business who need the data in their format.

The developer is welcome to change/enhance the give class.

Nyarost · Answer 3 · 2010-08-24T19:59:00

Solution 1

Return array, return list, return struct... Where is the problem?

Posted 24-Aug-10 19:59pm

Nyarost

Comments

MissNano 25-Aug-10 2:04am

i want to add 3 value in the list all in string. can List contain 3 value such as list.add<egg,apple,nut>. is it possible?

Christian Graus 25-Aug-10 5:07am

You have to define a class or struct to contain your three values, not store them in a string.

pradeep kumar yadav · Answer 4 · 2010-08-25T00:06:00

Solution 4

now you should write here

string s;
//under the loop
s=","+s;

Posted 25-Aug-10 0:06am

pradeep kumar yadav

Updated 25-Aug-10 0:30am

v2

Multiple value

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