Getting the value from usercontrol in javascript on button click

Question

I have this following scenario. I have a usercontrol in my page which has a radio button. This control is placed in a page, on click of a button in the page I need to know if the radio button is selected. This is a client event click event of the button as I have to show a confirmation message box i.e. if user clicks yes only then I have to do the remaining operation. Can you guide me what would be the best way to find if the radio button in the userControl is selected.

Thanks

var radioButtonObject = document.getElementById('radio_id'); if (radioButtonObject.checked) { /* do this */} else { /* do that*/ } — Sergii Stotskyi
– Sergii Stotskyi, Commented Jul 5, 2012 at 15:25
@Mathletics i have tried something like fallowing on server on click of radiobutton and use the IsYes value in js file ScriptManager.RegisterClientScriptBlock(this.Page, this.Page.GetType(), "IsYes", "var IsYes = true;", true); — ARV
– ARV, Commented Jul 5, 2012 at 15:27

Brian Mains · Accepted Answer · 2012-07-05 15:49:54Z

1

If the page needs to know, add a public property to the UC:

public bool IsRadioSelected { get { return Radio.Checked; } }

You can also have the RadioButton postback on changing the check by setting the AutoPostBack property to true.

EDIT: For client script, you could also add a public property to the RadioButton:

public string RadioClientID { get { return Radio.ClientID; } }

Then in javascript, you can do:

var radioButtonObject = document.getElementById('<%= RadioClientID %>'); 
if (radioButtonObject.checked) { /* do this */} else { /* do that*/ }

The problem is the ID of the radio button in client script looks like "ct100_Body_somecontainer_RadioID" and can't be easily directly referenced. The approach above is safer.

edited Jul 5, 2012 at 15:49

answered Jul 5, 2012 at 15:25

Brian Mains

50.8k35 gold badges156 silver badges261 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

ARV Over a year ago

i have a public property in the control, problem for me is getting the value in javascript, i am not able to get the control and property in script.

Collectives™ on Stack Overflow

Getting the value from usercontrol in javascript on button click

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related