Solved

Performing button click from textbox enter in VB.NET

Posted on 2013-11-24
2
698 Views
Last Modified: 2013-11-24
Hello,

I have a login box in my application - which has a username textbox, a password textbox and a Submit button.

I want the login subroutine to fire whether the user presses the Submit button, or if the user has the focus in the password textbox and presses enter.

Initially, I had coded it as follows (had 2 different handlers - one for the button and one for the textbox - both pointing back to the same subroutine)

    Sub LoginProc(sender As Object, e As System.EventArgs)
        
        ' Login by pushing the LOGIN button
        LoadPermissions(usernameTextbox.Text, passwordTextbox.Text)

    End Sub
    
    Sub LoginProc1(ByVal Source As Object, ByVal E As EventArgs)
   
        ' Login by pushing ENTER
        LoadPermissions(usernameTextbox.Text, passwordTextbox.Text)

    End Sub
    
    Sub LoadPermissions(ByVal Username As String, ByVal Password As String)
  
      .... Do my stuff here ...

    End Sub

Open in new window


with the associated HTML:

<asp:TextBox ID="passwordTextbox" runat="server" OnTextChanged="LoginProc1" autopostback="true" Width="44" TextMode="Password" />
<asp:Button runat="server" id="loginsubmitButton1" OnClick="LoginProc" class="formbutton" />

Open in new window


Realize now that that has been crappy code and everytime I login (still don't know why) both handlers are automatically invoked and the LoadPermissions subroutine is fired twice.

How can I clean up my code to just fire LoadPermissions once with one handler that works for both pushing the button, and using the ENTER button while the textbox is in focus ?

Thanks, Peter
0
Comment
Question by:pbissegger
2 Comments
 
LVL 83

Accepted Solution

by:
CodeCruiser earned 500 total points
ID: 39672789
See if adding following line to your Page_Load works

Page.RegisterHiddenField("__EVENTTARGET", "btnSubmit")

http://www.hanselman.com/blog/ASPNETHowToCreateADefaultEnterButtonForFormsPostBacks.aspx


You can also add the password textbox to a panel and then set Panel.DefaultButton property

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.panel.defaultbutton(v=vs.110).aspx
0
 

Author Closing Comment

by:pbissegger
ID: 39673366
Fantastic ! Works like a charm !

I already had a panel around my login, so I implemented the panel solution.

Thanks, Peter
0

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

For those of you who don't follow the news, or just happen to live under rocks, Microsoft Research released a beta SDK (http://www.microsoft.com/en-us/download/details.aspx?id=27876) for the Xbox 360 Kinect. If you don't know what a Kinect is (http:…
Real-time is more about the business, not the technology. In day-to-day life, to make real-time decisions like buying or investing, business needs the latest information(e.g. Gold Rate/Stock Rate). Unlike traditional days, you need not wait for a fe…
This tutorial gives a high-level tour of the interface of Marketo (a marketing automation tool to help businesses track and engage prospective customers and drive them to purchase). You will see the main areas including Marketing Activities, Design …
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

777 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question