how to find which checkbox item is checked in checkedListBox

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can anyone tell me how to findout which checkbox item is checked in checkedListBox?
I have to find out which item is checked in checkedlistbox and depending on that assign value to a variable.

Posted 31-Jul-13 23:38pm

Rakhil Naik

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rahul-4u · Answer 1 · 2013-07-31T23:44:00

Solution 1

use this

C#

for (int i = 0; i < chlDeptList.Items.Count; i++)
            {
                if (chlDeptList.Items[i].Selected)
                    deptids += chlDeptList.Items[i].Value+",";
            }

Posted 31-Jul-13 23:44pm

rahul-4u

Comments

Rakhil Naik 1-Aug-13 5:59am

thanks
but it showing error for Selected in if statement

rahul-4u 1-Aug-13 6:02am

how you assign data to checkedlistbox

Rakhil Naik 1-Aug-13 6:05am

i dnt get u

rahul-4u 1-Aug-13 6:09am

you have items in chlDeptList.Items. How these items are attached to chlDeptList. Also post the error you are getting.

Rakhil Naik 1-Aug-13 6:15am

checkedListBox1
Serial no
first name
last name
addr

if serial no is checked i have to assign value 'a1' to variable chk1 in same way i have to check for First name,last name,address an assign 'a2' to chk2, 'a3'to chk3, 'a4' to chk4

rahul-4u 1-Aug-13 9:18am

If you are doing this for windows application use this
http://www.example8.com/category/view/id/5105

Member 14760154 29-May-20 4:55am

i also try this,but always return false , although i have select the list

Thomas ktg · Answer 2 · 2013-07-31T23:48:00

Solution 2

Hi

You can try this

C#

public static string GetSelectedItems(System.Web.UI.WebControls.CheckBoxList chkList)
{
            StringBuilder sSelectedItems=new StringBuilder();
            for (int i = 0; i < chkList.Items.Count; i++)
            {
                if (chkList.Items[i].Selected)
                    sSelectedItems.Append(chkList.Items[i].Value + ",");
            }
            return sSelectedItems.ToString().TrimEnd(',');
}

It is to get all the selected items in the CheckBoxList.

Posted 31-Jul-13 23:48pm

Thomas ktg

v3

Comments

Adarsh chauhan 1-Aug-13 5:58am

good one.. +5

Rakhil Naik 1-Aug-13 6:04am

thanks
i want to check each checkbox one by one and assign value to a variable if it is checked otherwise keep it empty?
can u help me wth this

Thomas ktg 1-Aug-13 6:19am

public void GetSelectedItems()
{
for (int i = 0; i < chkList.Items.Count; i++)
{
if (chkList.Items[i].Selected)
chkList.Items[i].Text = "Value 1";
else
chkList.Items[i].Text = "";
}
}

Rakhil Naik 1-Aug-13 7:19am

it is showing some error for selected and Text in your code.
ERROR: "object does not contain defination for selected"

Thomas ktg 1-Aug-13 7:23am

First of all you should bind the CheckboxList. Then you try this would work.

Rakhil Naik 1-Aug-13 7:33am

CheckboxList should be binded to what?

Thomas ktg 1-Aug-13 7:41am

Could you please be little elaborate what are you expecting to do? If so then i could be little helpful for you?

Rakhil Naik 1-Aug-13 8:01am

i have a 1 checkedListBox with following item Serial no,First name,Last name,address,survey no.
I have to just find out which checkbox is checked

Rakhil Naik 1-Aug-13 8:02am

FOR EXAMPLE
checkedListBox1
Serial no
first name
last name
addr

if serial no is checked i have to assign value 'a1' to variable chk1 in same way i have to check for First name,last name,address an assign 'a2' to chk2, 'a3'to chk3, 'a4' to chk4

Rohan_P · Answer 3 · 2013-07-31T23:48:00

Solution 3

Hello,

If you want to get those value client side, then you can use JQuery as follows

$(function() {
$('#input[type="checkbox"]:checked').each(function() {
$('#result').append(', '+$(this).val());
});
});

Posted 31-Jul-13 23:48pm

Rohan_P

Thomas ktg · Answer 4 · 2013-08-01T02:21:00

Solution 4

C#

protected void chkList_SelectedIndexChanged(object sender, EventArgs e)
    {
        string sNo = "10202";
        string sFName = "Thomas";
        string sSName = "A";
        string sAddress = "India";

        List<string> collections = new List<string>();
        collections.Add(sNo);
        collections.Add(sFName);
        collections.Add(sSName);
        collections.Add(sAddress);

        for (int i = 0; i < chkList.Items.Count; i++)
        {
            if (chkList.Items[i].Selected)
                chkList.Items[i].Value = collections[i];
            else
                chkList.Items[i].Value = "";
        }
    }

<asp:CheckBoxList ID="chkList" AutoPostBack="true" runat="server"
onselectedindexchanged="chkList_SelectedIndexChanged">
<asp:ListItem Selected="True">Serial No</asp:ListItem>
<asp:ListItem>First Name</asp:ListItem>
<asp:ListItem>Last Name</asp:ListItem>
<asp:ListItem>Address</asp:ListItem>
</asp:CheckBoxList>

Posted 1-Aug-13 2:21am

Thomas ktg

v3

Comments

Rakhil Naik 1-Aug-13 8:39am

it is showing error for "selected" in "if (chkList.Items[i].Selected)"

Thomas ktg 1-Aug-13 8:42am

Give me the HTML code for the CheckListBox Control. And code you've written.

Rakhil Naik 1-Aug-13 8:50am

i am writting this code for windows application

private void checkedListBox1_SelectedIndexChanged(object sender, EventArgs e)
{
string chk = "a1";

List<string> collections = new List<string>();
collections.Add(chk);

for (int i = 0; i < checkedListBox1.Items.Count; i++)
{
if (checkedListBox1.Items[i].Selected)
checkedListBox1.Items[i].Value = collections[i];
else
checkedListBox1.Items[i].Value = "";
}

}
it is showing error for "selected" in "if (chkList.Items[i].Selected)" and "Value" in
chkList.Items[i].Value = collections[i];
else
chkList.Items[i].Value = "";

Rakhil Naik 1-Aug-13 9:15am

it showing this error
ERROR:'object' does not contain a definition for 'selected' and no extension method 'selected' accepting a first argument of type 'object' could be found (are you missing a using directive or an assembly reference?)

same error it showing for Value.
can u plz help me out with this error?

Thomas ktg 2-Aug-13 3:01am

Try this. But this is not the exact solution you are expecting to do. You can modify this as your needs.
private void checkedListBox1_ItemCheck(object sender, ItemCheckEventArgs e)
{
List<string> collectionsValue = new List<string>();
collectionsValue.Add("10202");
collectionsValue.Add("Thomas");
collectionsValue.Add("A");
collectionsValue.Add("India");

List<string> collectionsItems = new List<string>();
collectionsItems.Add("Serial No");
collectionsItems.Add("First Name");
collectionsItems.Add("Second Name");
collectionsItems.Add("Address");

if (e.NewValue == CheckState.Checked)
{
checkedListBox1.Items[e.Index] = collectionsValue[e.Index];
}
else
{
checkedListBox1.Items[e.Index] = collectionsItems[e.Index];
}
}

Rakhil Naik 2-Aug-13 9:09am

thanks