checkboxes with array list...................... [Resolved]

Posted by Samanthajyesta under ASP.NET on 6/17/2010 | Views : 1993 | Status : [Member] | Replies : 9

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hi,
i've 5 check boxes in my application. when i click the button after selecting the checkboxes, those selected checkboxes should be saved in arraylist.
how can we store those in an array list.

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Posted by: Samanthajyesta on: 6/23/2010 [Member] Starter

0	i got the solution sir,that i've declared my arraylist object ,outside the scope. then my count got incremented. http://www.dotnetfunda.com Samanthajyesta, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Vuyiswamb on: 6/17/2010 [Member] [MVP] [Administrator] NotApplicable

0	i am not infront of my dev computer but you would do something like ArrayList Arrlist = new ArrayList(); for (int i; i <= cbList.Items.Count - 1; i++) { if (cbList.Items[i].Selected) { //Add to Arrlist Arrlist.Add(cbList.Items[i]); } } Arraylist are old , look at List<String> Thank you for posting at Dotnetfunda Vuyiswa Maseko Thank you for posting at Dotnetfunda [Administrator] Samanthajyesta, if this helps please login to Mark As Answer. \| Alert Moderator

i am not infront of my dev computer but you would do something like


     ArrayList Arrlist = new ArrayList();

 for (int i; i <= cbList.Items.Count - 1; i++)

  {

         

                    if (cbList.Items[i].Selected)

                    {

                       //Add to Arrlist 

                            Arrlist.Add(cbList.Items[i]);

                    }

               

  }

Arraylist are old , look at

List<String>

Thank you for posting at Dotnetfunda

Vuyiswa Maseko

Thank you for posting at Dotnetfunda
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Samanthajyesta, if this helps please login to Mark As Answer. | Alert Moderator

Posted by: Samanthajyesta on: 6/17/2010 [Member] Starter

0	hi sir,i tried the code that u sent. in forloop the count of Arraylist is gettin incremented. How can we increment the count of Arrlist. http://www.dotnetfunda.com Samanthajyesta, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Vuyiswamb on: 6/17/2010 [Member] [MVP] [Administrator] NotApplicable

0	This Will do Arrlist++ Thank you for posting at Dotnetfunda [Administrator] Samanthajyesta, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Samanthajyesta on: 6/17/2010 [Member] Starter

0	hi sir, i already tried. but it is showing an error message like.. cannot be applied to operand of type System.Collections.ArrayList. http://www.dotnetfunda.com Samanthajyesta, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Vuyiswamb on: 6/17/2010 [Member] [MVP] [Administrator] NotApplicable

0	Try using it like this Arrlist = Arrlist + 1 ; Thank you for posting at Dotnetfunda [Administrator] Samanthajyesta, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Samanthajyesta on: 6/18/2010 [Member] Starter

0	hi sir, here the problem is the '++' not getting applied to the System.Collections.ArrayList. then how can we increment the size of the array list. http://www.dotnetfunda.com Samanthajyesta, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: Vuyiswamb on: 6/18/2010 [Member] [MVP] [Administrator] NotApplicable

0	So basically you want to increase the size of the Arraylist, then you need to remember that Arraylist came after the Array, they are not exactly like Arrays . if you use the Add method it automatically increases the size of the arraylist ,you dont need to increase it. that is why for unknown dimensions you will declare you arraylist without any max dimension. Hope this helps , tell me if you don't understand. Thank you for posting at Dotnetfunda [Administrator] Samanthajyesta, if this helps please login to Mark As Answer. \| Alert Moderator

So basically you want to increase the size of the Arraylist, then you need to remember that Arraylist came after the Array, they are not exactly like Arrays . if you use the Add method it automatically increases the size of the arraylist ,you dont need to increase it. that is why for unknown dimensions you will declare you arraylist without any max dimension.

Hope this helps , tell me if you don't understand.

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[Administrator]

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Posted by: Vuyiswamb on: 6/23/2010 [Member] [MVP] [Administrator] NotApplicable

0	i am glad you sorted it out. mark your answer as Answered. Thank you again for posting at Dotnetfunda Vuyiswa Maseko Thank you for posting at Dotnetfunda [Administrator] Samanthajyesta, if this helps please login to Mark As Answer. \| Alert Moderator

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