dynamically assign id to controls - controls are inside datalist controls in asp .net

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Hi frnds,

I am using datalist for showing datas. Datas are test questions with 4 options.I have 50 questions displaying in datalist.

By using ItemDataBound event - i am making visible only one question with 4 options to user. Remaining questions are invisible . In the Itemdatabound event - i am assigning id to the radio buttons. but also id is not assigned to the datalist ,it showing different id.

C#

if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
            {                
HiddenField HdSlNo = (HiddenField)e.Item.FindControl("HdSlNo");
                RadioButton Option1 = (RadioButton)e.Item.FindControl("Option1");
                RadioButton Option2 = (RadioButton)e.Item.FindControl("Option2");
                RadioButton Option3 = (RadioButton)e.Item.FindControl("Option3");
                RadioButton Option4 = (RadioButton)e.Item.FindControl("Option4");
                RadioButton Option5 = (RadioButton)e.Item.FindControl("Option5");
                
                Option1.ID = "rdbtnoption1_" + HdSlNo.Value.ToString();
                Option2.ID = "rdbtnoption2_" + HdSlNo.Value.ToString();
                Option3.ID = "rdbtnoption3_" + HdSlNo.Value.ToString();
                Option4.ID = "rdbtnoption4_" + HdSlNo.Value.ToString();
                Option5.ID = "rdbtnoption5_" + HdSlNo.Value.ToString();
}

Thanks,
Suresh

Posted 10-Jan-14 2:01am

itsureshuk

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njammy · Answer 1 · 2014-01-10T12:56:00

Solution 1

On itemDataBound event just assign the question id and option id to the radio button controls.
Or you can use for loop to iterate over the options/questions and assign the item index value to the control.

Bear in mind that different IDs will appear because the controls inside each Data List item will need a unique ClientID so the html is generated correctly and view state works.

Posted 10-Jan-14 12:56pm

njammy

Comments

itsureshuk 11-Jan-14 0:38am

in itemdatabound and in itemrowcreated both events i assigned but it not reflecting

itsureshuk 11-Jan-14 1:01am

Hi I got a solution by assigning properties of the control as ClientIDMode="Static" . I am getting assigned ID also.Whether it will affect anywhere?

Karthik_Mahalingam · Answer 2 · 2014-01-10T15:20:00

Solution 2

It is possible to create a new dynamic control and to rename it
but the DataList will not allow you to rename the existing control ID that is defined inside the ItemTemplate
have a look at this http://stackoverflow.com/a/18976091[^]

Posted 10-Jan-14 15:20pm

Karthik_Mahalingam

Comments

itsureshuk 11-Jan-14 1:01am

Hi I got a solution by assigning properties of the control as ClientIDMode="Static" . I am getting assigned ID also.Whether it will affect anywhere?

Karthik_Mahalingam 11-Jan-14 4:29am

it will have an impact over other javascript function. unless you are not using ClientID in the javascript.