C# Discussion Boards - CodeProject

flicktom11-Dec-05 18:11

11-Dec-05 18:11

I have an MDI parent form "formMAIN" with the following code:

public formMAIN()<br />
{<br />
  InitializeComponent();<br />
  // blah blah blah<br />
  LoginForm loginForm = new LoginForm();<br />
  loginForm.ShowDialog();<br />
<br />
  if (LoggedUserName != "")<br />
  {<br />
    this.Text += " [" + LoggedUserName + "]";<br />
  }<br />
  else<br />
  {<br />
    // problem area... I want to close the main form if login failed...<br />
    //   IE... LoggedUserName will be ""<br />
  }<br />
  ...

The loginForm connects to the database, checks for matching user name and password and sets the formMAIN's static variable "LoggedUserName" if a match is found. I placed it in the constructor of formMAIN so that it would appear first.

I want to be able to close this main form immediately if the user closes the login form or clicks the "cancel" button on it... IE.. LoggedUserName will be blank when the focus returns to the formMAIN.

I tried "this.Close();" as well as Application.Close(), but it doesn't work. I'm guessing this is because it's in the constructor for the form, which obviously is not yet completely instantiated. I can't put it in the initialize area for the same reason.

I need some way to automatically perform the this.Close() operation 'after' the formMAIN completes initialization if the LoggedUserName value is still "" (IE.. failed log-in or user canceled the login form). How can this be done with the least amount of code?

Flicktom

-- modified at 0:23 Monday 12th December, 2005

Re: Login failure needs to close main app...

Vikram A Punathambekar11-Dec-05 18:58

Vikram A Punathambekar

11-Dec-05 18:58

Try calling

Environment.Exit(1);

WARNING: I'm not sure if this is the right way to do it, but it seems to do the job. You might want to see if somebody else comes up with a better solution.

Cheers,
Vikram.

"When I read in books about a "base class", I figured this was the class that was at the bottom of the inheritence tree. It's the "base", right? Like the base of a pyramid." - Marc Clifton.

Re: Login failure needs to close main app...

flicktom13-Dec-05 14:36

flicktom

13-Dec-05 14:36

This solution worked great. Thanks.

Re: Login failure needs to close main app...

Polis Pilavas12-Dec-05 2:36

Polis Pilavas

12-Dec-05 2:36

Try putting your code into the form's Load() event instead.

Regards,
Polis

Can you practice what you teach?

how to using *.ocx written in vb6 for c#.net

tinh cau11-Dec-05 17:52

tinh cau

11-Dec-05 17:52

help me

Re: how to using *.ocx written in vb6 for c#.net

Christian Graus11-Dec-05 18:09

Christian Graus

11-Dec-05 18:09

Isn't an ocx a COM control ? If so, you can reference it using COM.

Christian Graus - Microsoft MVP - C++

Re: how to using *.ocx written in vb6 for c#.net

Johan Russouw11-Dec-05 23:12

Johan Russouw

11-Dec-05 23:12

Right click on the "Toolbox | Windows Forms" and select Add/Remove Items.
Select the COM Components tab at the top. If the activeX is registered on the system it will be in the list. Select it and you will find it in the Toolbox list.

Opening a textbox using OleDbReader

Mahi.Ragava11-Dec-05 17:51

Mahi.Ragava

11-Dec-05 17:51

Hi friends,

I have to open a text file in with .txt extension..

For this ,am using oledbConn,oledbCommand,oledbReader to read the text file...

I can retrieve the files with their name as "File1.txt","test.txt" etc(as normal filenames)...but if i try to retreive file of name as "test.test.txt","sample.text.txt"....that is,if there is "." in the name of the textfile other than what we use for the extension(.txt),...i could nt retreive...

It displays exception...

Is it possible to retreive the textfile names like this?

Kindly tackle this...

Thanx

Jimmy