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asp.net, checkbox

Posted on 2014-02-05
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Last Modified: 2014-02-16
I hav
I have below codes to get a list of checkbox.
and now if a submit button is clicked,
I want to capture all of the CHECKED value in the checkbox.

How can I do that?



 <asp:DataList CellPadding="4" CellSpacing="200"
                        DataKeyField="ItemID"  
                        RepeatColumns="3" ID="costItems" runat="server"
                        >
                        <ItemTemplate>
                         <asp:Panel Width="250px" runat="server" ID="panelControl">                            
                            <asp:CheckBox TextAlign="Left"  runat="server" ID="subItemCost"  />&nbsp;
                            <asp:Label runat="server" ID="description" Text='<%# Eval("Description") %>'></asp:Label>
                            ($<asp:Label runat="server" ID="cost" Text='<%# Eval("Cost") %>'></asp:Label>)
                         </asp:Panel>
                        </ItemTemplate>
                        </asp:DataList>
<asp:Button runat="server" ID="submit" CssClass="btn" Text="Book Now" onclick="submit_Click" />
0
Comment
Question by:CoolDev2014
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12 Comments
 
LVL 22

Expert Comment

by:Mrunal
ID: 39837832
hi,
Please find below code.
this will help you,

foreach (DataListItem dli in costItems.Items)
            {
                if (dli.ItemType == ListItemType.Item || dli.ItemType == ListItemType.AlternatingItem)
                {
                    CheckBox itemCostChk = dli.FindControl("subItemCost") as CheckBox;
                    if (itemCostChk != null)
                    {
                        bool isCostSelected = itemCostChk.Checked;
                    }
                }
            }

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0
 

Author Comment

by:CoolDev2014
ID: 39839553
Thank but not working. It always returns "FALSE" regardless of it is checked or unchecked.
0
 
LVL 5

Expert Comment

by:Jeroen Timmermans
ID: 39841339
in the Page_Load method, is there a check on whether the page is a postback or not?

(!Page.IsPostback){
//Populate DataList
}

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Author Comment

by:CoolDev2014
ID: 39842778
jeroenemans: the answer is no.

If you can post your codes, that will be very helpful.
0
 
LVL 5

Expert Comment

by:Jeroen Timmermans
ID: 39842797
There's your problem. You're recreating the checkboxes before reading their checked-property.
Modify your code so it won't rebind on postback, and you're done.
0
 

Author Comment

by:CoolDev2014
ID: 39844336
got it. I am able to get the information. But I got one more question if you don't mind.

i have database table below

id desc cost
1  tire   100
2 brake 200

so now i am able to use datalist and checkbox to read the list.
but now I need to capture the checked value in the checkbox and save them into
new table

so if first checkbox is checked, i want to record into the database. can you show me how to do that?
0
 
LVL 5

Accepted Solution

by:
Jeroen Timmermans earned 500 total points
ID: 39845016
You could set the ids of the checkboxes to something that represents the database values eg: chk_1

In your submit method, loop through the posted values with a key starting with chk_, strip the chk_ from the key and you'll have your ids.
0
 

Author Comment

by:CoolDev2014
ID: 39845437
can you please show me in codes? Thanks
0
 
LVL 5

Expert Comment

by:Jeroen Timmermans
ID: 39845494
You should be able to figure it out yourself by now.
0
 

Author Comment

by:CoolDev2014
ID: 39845664
It is okay if you can't show me in codes. Thank you for your time to help me...but  i can't give you points based on your comments you posted.
0
 
LVL 5

Expert Comment

by:Jeroen Timmermans
ID: 39845675
Yes you can. But you won't. Just like I won't do your work for you.
0
 

Author Comment

by:CoolDev2014
ID: 39846046
ok thank you. We just wait for other experts willing to help more. Again. Thank you for your time and effort.
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