如何请求客户端确认在服务器端执行操作（如发送电子邮件）ASP.NET C＃

Question

I have a button that simply triggers a function that sends an email. I need the user's confirmation to send that email or cancel the process, here is my code:

• Button <asp:Button ID="enviar" runat="server" Text="Envíar" OnClick = "enviar_Click"/>

• enviar_Click() C# function on server side

  protected void enviar_Click(object sender, EventArgs e)

• jquery function to return hidden values to fill the email

   elementosCompra = elementosCompra.filter(Boolean); $("#hiddenCompra").val(elementosCompra); $('#HiddenPuntos').val(hiddenPuntos); 

Answer 1

Javescript method:

 function requestConfirmation() { var answer = confirm('Do u want to continue ?'); return answer; } 

 <form> <input type="submit" onClick="return requestConfirmation();" /> </form> 

Since you are using ASPX form, you have to change your aspx code as

<asp:Button ID="enviar" runat="server" Text="Envíar" OnClientClick = "return requestConfirmation();" OnClick = "enviar_Click"/>
<script>
    function requestConfirmation() {
      var answer = confirm('Do u want to continue ?');
      return answer;
    }
</script>

According to this the PostBack will happen only if the user confirms, using the javascript confirm dialog box. If the user hits cancel,then no submission happens.

Answer 2

Use Jquery.confirm.min.js Library

$.confirm({
 title: 'Confirm Message',
 text: 'Want to send?'
 confirm: function(){
  //your ajax call
},cancel:function(){
  return false;
},
confirmButton: "Yes",
cancelButton: "No"
});