Looking to display a dialog box using JavaScript

Question

Looking to display a dialog box using JavaScript

Hello everyone, I have a web form with a button that triggers a data backup process when clicked. Here is the JavaScript code I am using:

<script language="javascript" type="text/javascript">
   function showPleaseWait() {
       document.getElementById('PleaseWait').style.display = 'block';
   }
</script>

<asp:Button ID="btnTakebackup" runat="server" Text="Take Backup"  Enabled="true" 
   onMouseDown="showPleaseWait()" CausesValidation="false" />

<div id="PleaseWait" style="display: none;">"Please Wait Backup in Progress.."</div>

Currently, I am utilizing a button for conducting backups.

My goal now is to display a message in the btnTakebackup_Click() event indicating whether the backup was successful or not. I tried using

Response.Write("<script>alert('abcd');</script>");

in the btnTakebackup_Click() event. However, the issue I am facing is that I want to show the page as well, but instead, only a white background is displayed.

Thank you in advance...

c#javascript asp.net

Answer 1

Answer №1

In order to display a message box alert, you must be able to generate a new script that can be written directly to the response stream:

var customScript = 
    "<script type=\"text/javascript\">" +
    "alert(\"Please wait, process in progress...\");" +
    "</script>"
Response.Write(customScript);

Even though this may not be ideal, it is sometimes deemed as "essential".

Answer 2

In order to display a message box alert, you must be able to generate a new script that can be written directly to the response stream:

var customScript = 
    "<script type=\"text/javascript\">" +
    "alert(\"Please wait, process in progress...\");" +
    "</script>"
Response.Write(customScript);

Even though this may not be ideal, it is sometimes deemed as "essential".

Answer 3

Answer №2

If you're looking to enhance the functionality of ASP controls, consider incorporating client side event handlers:

Learn How to Add Client Script Events to ASP.NET Web Server Controls

Best regards.

Answer 4

If you're looking to enhance the functionality of ASP controls, consider incorporating client side event handlers:

Learn How to Add Client Script Events to ASP.NET Web Server Controls

Best regards.

Answer 5

Answer №3

Are you considering using an alert for this situation? Keep in mind that alerts can lock up the entire browser, not just the tab where your page is located. Think about whether your users actually need to actively acknowledge the success of the backup by clicking 'ok', or if they can simply be informed of it...

One suggestion is to have a div on the page displaying "Backup successful". You can control its visibility with a boolean property BackUpSuccess, which you can set to true in the code mentioned earlier.

<div id="backUpSuccess" <%=BackUpSuccess ? "" : "style='display:none;'"%>>
    Backup was successful
</div>

You can customize the styling of this div in your .css file to ensure it stands out visually.

If you still want an alert, you could consider running some JavaScript on page load to check the content of a hidden input, set server-side in a similar manner...though executing JavaScript on page load can be tricky unless you're using jQuery, in which case it's much simpler.

Answer 6

Are you considering using an alert for this situation? Keep in mind that alerts can lock up the entire browser, not just the tab where your page is located. Think about whether your users actually need to actively acknowledge the success of the backup by clicking 'ok', or if they can simply be informed of it...

One suggestion is to have a div on the page displaying "Backup successful". You can control its visibility with a boolean property BackUpSuccess, which you can set to true in the code mentioned earlier.

<div id="backUpSuccess" <%=BackUpSuccess ? "" : "style='display:none;'"%>>
    Backup was successful
</div>

You can customize the styling of this div in your .css file to ensure it stands out visually.

If you still want an alert, you could consider running some JavaScript on page load to check the content of a hidden input, set server-side in a similar manner...though executing JavaScript on page load can be tricky unless you're using jQuery, in which case it's much simpler.

Answer 7

Answer №4

After reviewing your question, it seems that although the data backup process is initiated when the button is clicked, the alert message does not appear immediately upon clicking the button. This issue occurs because the JavaScript function is being called within the button click event, which will only execute after all the code within the button click event has been processed. To address this, I recommend adding a JavaScript function directly in the .aspx source page and calling this function as illustrated below:

<script ...>
function xyz()
{
alert('Please Wait');
}
</script>

and in the button declaration

<asp:button id='btn_submit' runat="server" OnClientClick="return xyz();" />

Answer 8

After reviewing your question, it seems that although the data backup process is initiated when the button is clicked, the alert message does not appear immediately upon clicking the button. This issue occurs because the JavaScript function is being called within the button click event, which will only execute after all the code within the button click event has been processed. To address this, I recommend adding a JavaScript function directly in the .aspx source page and calling this function as illustrated below:

<script ...>
function xyz()
{
alert('Please Wait');
}
</script>

and in the button declaration

<asp:button id='btn_submit' runat="server" OnClientClick="return xyz();" />

Looking to display a dialog box using JavaScript

Answer №1

Answer №2

Answer №3

Answer №4

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