Question

Message box Confirm in Asp.net

Asked by: bkourouma

Hi all,

I have a specific requirement that I just cannot see here in the solutions.

I have an asp.net vb.net application. I have un a sub

Private Sub Close_Register()

// SOME CODE HERE
--------------------
--------------------

// Then I need to send a confirm dialog to user

Dim Answer As String
Answer = MsgBox("The amount is lower then the actual amount. Are you sure you want to close the register?", MsgBoxStyle.Question + MsgBoxStyle.YesNo)
If Answer = vbNo Then Exit Sub

// This works fine on my dev application but when run on the server i get
Error:Showing a modal dialog box or form when the application is not running in UserInteractive mode is not a valid operation. Specify the ServiceNotification or DefaultDesktopOnly style to display a notification from a service application.


Please help




End

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Asked On
2009-08-08 at 02:23:19ID24636752
Tags

asp.net

,

message box

,

code behind

Topics

Programming for ASP.NET

,

.NET Framework 2.x

,

WebApplications

Participating Experts
3
Points
500
Comments
5

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Answers

 

by: ajollyPosted on 2009-08-08 at 02:28:01ID: 25048954

VB.Net provides you the option to use MessageBox in development environemtn.

But its not allowed on web server.

ASP.Net does not support MessageBox.

You need to write some script or use ajax scripts or write a user control for that.

 

by: jinalPosted on 2009-08-08 at 02:42:04ID: 25048992

Are you want put confirm on asp button then use this way

<asp:Button ID="Process" runat="server" OnClientClick="return Confirm('Are you sure for process?');" />

Now it ask for confirmation when you click button.

 

by: Sherif_TalaatPosted on 2009-08-08 at 03:02:01ID: 25049065

Write the line below in event OnClick for the button. So, when the user click the button he'll get a pop-up message for confirmation similar to MessageBox.

Page.RegisterClientScriptBlock("clientScript", "<script language='javascript'>alert('Message Here');</script>");

                                              
1:

Select allOpen in new window

 

by: bkouroumaPosted on 2009-08-09 at 13:47:11ID: 25055890

Hi, what i need is not to add the confirmation on button submit. It should be in the code as it may or may not fire. So it should be:


if amount ok, then nothing

else if amount is not ok then
    Messagebox asking form confirmation
       if ok clicked then CODE
       else exit sub

 

by: bkouroumaPosted on 2009-08-09 at 14:39:34ID: 25056092

This is what I was looking for http://forums.asp.net/p/981603/1257057.aspx#1257057



In the aspx file:
 <input type="hidden" id="Hidden1" name="Hidden1" runat="server">
That adds this to the CodeBehind:
 Protected WithEvents Hidden1 As System.Web.UI.HtmlControls.HtmlInputHidden

Add some JavaScript:

Dim scriptString As String = "<script language=JavaScript> " + Environment.NewLine
' Store the confirm's return in the hidden control...
scriptString += "document.getElementById('" + Hidden1.ClientID + "').value = " + Environment.NewLine
scriptString += " confirm('Overwrite?');" + Environment.NewLine
' Do a new PostBack...
scriptString += GetPostBackEventReference(Hidden1, String.Empty) + ";" + Environment.NewLine
scriptString += "</script>"

RegisterStartupScript("ConfirmScript", scriptString)

Then in Page_Load:
If IsPostBack AndAlso Request("__EVENTTARGET") = "Hidden1" Then
     ' Response.Write("Hidden1.Value: " + Hidden1.Value)

     If Hidden1.Value = "true" Then
          ' User answered OK
     Else
          ' User answered Cancel
     End If
End If
Hidden1.Value = String.Empty

NC...

20120131-EE-VQP-002

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