How to show confirmation popup on click on of ASP button control

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I have a asp button control, on click of this button one pop-up should appear which should ask YES or NO option, on selection of yes option from this pop-up should call a function from aspx.cs page.

ASPX PAGE:

<asp:Button ID="Button1" runat="server"  OnClick="Button1_Click"  Text ="Button" />

ASPX.CS PAGE:

protected void Button1_Click(object sender, EventArgs e)
        {
            DoSomethingMethod(){ }
        }

on click of button1 popup need to be triggered, triggered popup should have 2 options like YES or NO,
on selection of YES i should call DoSomethingMethod() , and on selection of NO do nothing.

What I have tried:

i'm not getting any idea on this, solution can be ok with jquery, javascript,asp validation anything is fine.

Posted 23-Aug-19 6:35am

Virendra S from Bangalore, Karnataka

Updated 23-Aug-19 7:31am

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Richard Deeming · Answer 1 · 2019-08-23T07:31:00

Solution 1

You'll have to do this in Javascript, since your C# code is running on the server and cannot interact with the user.

ASP.NET

<asp:Button ID="Button1" runat="server"
    OnClientClick="if(!confirm('Really do the thing?')){return false;}"
    OnClick="Button1_Click"
    Text="Button"
/>

Button.OnClientClick Property (System.Web.UI.WebControls) | Microsoft Docs[^]
Window.confirm() - Web APIs | MDN[^]

Posted 23-Aug-19 7:31am

Richard Deeming

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Virendra S from Bangalore, Karnataka 23-Aug-19 14:45pm

Window.confirm() is helpful but i am looking for some standard popup box just like jquery dialog box, can you help me in this?

Richard Deeming 27-Aug-19 7:18am

There is no standard popup box, other than alert and confirm.

If you use something like jQuery's dialog box, or Bootstrap's modal, then it gets more complicated. Displaying the dialog won't stop the form from being submitted, so you'll need more code to manage the submission process. For example:

var clickedButton = null;

function displayConfirmation(evt){
    if (clickedButton === evt.target) {
        return;
    }
    
    evt.preventDefault();
    clickedButton = evt.target;
    // Display your dialog box here...
}

function dialogOkButtonClicked(){
    // Hide the dialog box here...
    clickedButton.click();
}

function dialogCancelButtonClicked(){
    // Hide the dialog box here...
    clickedButton = null;
}

Alternatively, you may be able to use the showModalDialog polyfill[^].