Assign array value to some variable

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Array USStates is populated with the values as shown but if i want
to access this values within the array, how is it posssible.
Refrencing through USStates(1) dosent work.

USStates.Add(new USState("Alabama", "AL"));


<pre lang="cs">// Populate the list box using an array as DataSource.
           <b> ArrayList USStates = new ArrayList();</b>
           <b> USStates.Add(new USState(&quot;Alabama&quot;, &quot;AL&quot;))</b>;
            USStates.Add(new USState(&quot;Washington&quot;, &quot;WA&quot;));
            USStates.Add(new USState(&quot;West Virginia&quot;, &quot;WV&quot;));
            USStates.Add(new USState(&quot;Wisconsin&quot;, &quot;WI&quot;));
            USStates.Add(new USState(&quot;Wyoming&quot;, &quot;WY&quot;));
            ListBox1.DataSource = USStates;

            // Set the long name as the property to be displayed and the short
            // name as the value to be returned when a row is selected.  Here
            // these are properties; if we were binding to a database table or
            // query these could be column names.
            ListBox1.DisplayMember = &quot;LongName&quot;;
            ListBox1.ValueMember = &quot;ShortName&quot;;

public class USState
    {
        private string myShortName;
        private string myLongName;

        public USState(string strLongName, string strShortName)
        {

            this.myShortName = strShortName;
            this.myLongName = strLongName;
        }

        public string ShortName
        {
            get
            {
                return myShortName;
            }
        }

        public string LongName
        {

            get
            {
                return myLongName;
            }
        }

    }
}</pre>

Posted 27-Jan-13 22:38pm

Sumit Lotankar

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3 solutions

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Jameel VM · Answer 1 · 2013-01-27T22:57:00

Solution 1

Please retrieve your data like below.You must cast the particular index value to UsState class.

C#

ArrayList arrayList=new ArrayList();
            var usStateItem=new UsState("Us","Usa");
            arrayList.Add(usStateItem);
            UsState usState = (UsState)arrayList[0];

Hope this helps

Posted 27-Jan-13 22:57pm

Jameel VM

Updated 27-Jan-13 23:02pm

v3

CPallini · Answer 2 · 2013-01-27T22:59:00

You may use the [] operator to access ArrayList items, e.g.

C#

ArrayList al=new ArrayList();
al.Add("foo");
al.Add("boo");
al.Add("goo");
Console.WriteLine("Item 1 is {0}", al[1]);
al[1] = "hoo";
Console.WriteLine("Now item 1 is {0}", al[1]);

Please consider using List<string></string> instead of the ArrayList.

vinayraghavendra.hs · Answer 3 · 2013-01-27T23:07:00

Solution 3

USState obj = (USState)USStates[0];
string longname= obj.LongName;
string shortname= obj.ShortName;

//if u create List instead of ArrayList

C#

List<USState> USStates=new List<USState>();
string longname=USStates[0].LongName;
string shortname=USStates[0].ShortName;

Posted 27-Jan-13 23:07pm

vinayraghavendra.hs

Updated 27-Jan-13 23:12pm

v2