Checkboxlist index issue

catalin ilie

Hello there. i want to make an application, i use a checkboxlist, and i want to retain in an array checked or unchecked indexes like this: for unchecked items, the array location should be a 0, and for checked items, the array location should be 1.

i tried like this:

[code]

private void checkboxlist1_SelectedIndexChanged(object sender, EventArgs e)

{

int[] v=new int[6];

for(int i=0;i<6;i++)

if(checkboxlist1.getitemchecked(i))

v[i]=1;

else

v[i]=0;

string w=v.ToString();

}

[/code]

and then , the result is wrong. for example, if i check the first three items, the result will be 110000. it seems it's a step behind or something. should i use itemcheck event instead of selectedindexchanged, or both, or what? thank you

4 Replies

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Suthish Nair15y ago
Hi,
Welcome to C# Corner..
Am not sure in understanding your problem, but give this a try..
if (checkboxlist1.GetItemCheckState(i) == CheckState.Checked)

v[i]=1;

else

v[i]=0;
Subhendu De15y ago
This is simple code for aspx page...




            AAA
            BBB
            CCC
            DDD
            EEE
            FFF






I have taken one checkboxlist and button..... I took button bcz onclick of button I can set the 0/1 to array for checked/unchecked checkboxes.

code behind
=========
public partial class WebForm2 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            int[] _array = new int[6];

            for (int i = 0; i < CheckBoxList1.Items.Count; i++)
            {
                if (CheckBoxList1.Items[i].Selected)
                    _array[i] = 1;
            }

            for (int j = 0; j < _array.Length; j++)
            {
                Response.Write(_array[j].ToString() + "
");
            }
        }
    }

This is codebehind written in C#.

I took one array of size 6 since my checkboxlist item count is 6. If you take integer array by default, the values are 0 in array items.

Then I am traversing the checkboxlist items and set array location to 1 for the checked checkbox.

These whole things I am doing on button click event rather checkboxlist selectedcchengedEvent.

Hope this help you to understand what I tried. If you have other requirement, then feel free to reply.

Thanks....
Sam Hobbs15y ago
I am sorry but I don't understand what it is that you need to do.
Subhendu De15y ago
aspx code
=======




            AAA
            BBB
            CCC
            DDD
            EEE
            FFF






code behind
=========
public partial class WebForm2 : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            int[] _array = new int[6];

            for (int i = 0; i < CheckBoxList1.Items.Count; i++)
            {
                if (CheckBoxList1.Items[i].Selected)
                    _array[i] = 1;
            }

            for (int j = 0; j < _array.Length; j++)
            {
                Response.Write(_array[j].ToString() + "
");
            }
        }
    }

Is there any need to put the code in selectedindexchanged event?

Thanks