Ask yes no cancel window in c#

On the click event of button you can add this code to handle the YES/NO response.

DialogResult result = MessageBox.Show("Do you want to exit?", "Confirmation", messageBoxButtons.YesNoCancel);
if(result == DialogResult.Yes){
    // do what you want!!
  }
else if (result == DialogResult.No){
    //do what you want!!
  }
else{
    //do what you want!!
  }

In this example we are going to ask the user if he/she really wants to clear the input on button click

First, add this script to your code behind

<script type="text/javascript">
    function Confirm() {
        var confirm_value = document.createElement("INPUT");
        confirm_value.type = "hidden";
        confirm_value.name = "confirm_value";
        if (confirm("Are you sure you want to clear all your input?")) {
            confirm_value.value = "Yes";
        } else {
            confirm_value.value = "No";
        }
        document.forms[0].appendChild(confirm_value);
    }
    </script>
</script>

Second, on your button, add the Confirm() class

<asp:button id="btnClear" runat="server" onclick="OnConfirm" onclientclick="Confirm()"

NOTE IT IS IMPORTANT TO SPECIFY THE onClick and onClientclick

Third and final step is right click your page and click view code and add this function:

public void OnConfirm(object sender, EventArgs e)
       {
           string confirmValue = Request.Form["confirm_value"];
           if (confirmValue == "Yes")
           {
              //your function here

           }
           else
           {
              //your function here
           }
       }

That's it, you're good to go!

SIDENOTE: There is no cancel button, since basically it has the same functionality with no button.

you can try it -<asp:imagebutton id="ImageButton3" runat="server" width="25" height="25" xmlns:asp="#unknown">
img src="../../AdminImages/delete.png" CommandName="Delete" ToolTip="Delete"
OnClientClick="return confirm('Are you sure want to delete record?')"
CausesValidation="False" />

Hi...
Can u see this link,its may helpfull to u.
PopUp Window With Different Buttons ( Windows Message Box )[^]
http://www.dotnetperls.com/messagebox-show[^]
Thank u.

This confirm box help you to get correct response with having Ajax.


java script code for geting confirm value.

<script type="text/javascript">
        function Confirm() {
            var confirm_value = document.createElement("INPUT");
            confirm_value.type = "hidden";
            confirm_value.name = "confirm_value";
            if (confirm("Do you want to proceed continue ?")) {
                confirm_value.value = "Yes";
            } else {
                confirm_value.value = "No";
            }
            document.forms[0].appendChild(confirm_value);
        }
    </script>

On C# Code for geting exect data.

string confirmValue = Request.Form["confirm_value"];
          string[] Value_Confirm = confirmValue.Split(',');
          if (Value_Confirm[Value_Confirm.Length-1] == "Yes")
          {}