Exiting a Subroutine

[OutdoorGuy]

Greetings,

I'm still relatively new to C# and was wondering if there was a way to
exit a subroutine (such as "Exit Sub" in VB)? I have the code below
which performs validations. If the user fails to enter in a First name,
then I want to set the focus to the control on the form and then exit
the subroutine. Any ideas?

private void btnSubmit_Click (object sender, System.EventArg s e)
{
...

if (this.txtFirstN ame.Text == "")
{
MessageBox.Show ("First Name is required");
this.txtFirstNa me.Focus();
// I then want to exit the subroutine.
}
if (Lastname == "")
{
...

Thanks in advance!

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[Clint (cmueller]

Hey,

You can use the return keyword for this:

if (this.txtFirstN ame.Text == "")
{
MessageBox.Show ("First Name is required");
this.txtFirstNa me.Focus();
return;
}

Hope that helps,
Clint

OutdoorGuy wrote:

Greetings,

I'm still relatively new to C# and was wondering if there was a way to exit a subroutine (such as "Exit Sub" in VB)? I have the code below
which performs validations. If the user fails to enter in a First name, then I want to set the focus to the control on the form and then exit
the subroutine. Any ideas?

private void btnSubmit_Click (object sender, System.EventArg s e)
{
..

if (this.txtFirstN ame.Text == "")
{
MessageBox.Show ("First Name is required");
this.txtFirstNa me.Focus();
// I then want to exit the subroutine.
}
if (Lastname == "")
{
..

Thanks in advance!

*** Sent via Developersdex http://www.developersdex.com ***

[amol]

Just use "return":

private void btnSubmit_Click (object sender, System.EventArg s e)
{
...
if (this.txtFirstN ame.Text == "")
{
MessageBox.Show ("First Name is required");
this.txtFirstNa me.Focus();
// I then want to exit the subroutine.
return; <-------
}

[Tim Wilson]

Just use "return". "Return" can also be used in VB.Net.

--
Tim Wilson
..Net Compact Framework MVP

"OutdoorGuy " <Ou********@fis hing.com> wrote in message
news:uX******** ******@TK2MSFTN GP12.phx.gbl...

Greetings,

I'm still relatively new to C# and was wondering if there was a way to
exit a subroutine (such as "Exit Sub" in VB)? I have the code below
which performs validations. If the user fails to enter in a First name,
then I want to set the focus to the control on the form and then exit
the subroutine. Any ideas?

private void btnSubmit_Click (object sender, System.EventArg s e)
{
..

if (this.txtFirstN ame.Text == "")
{
MessageBox.Show ("First Name is required");
this.txtFirstNa me.Focus();
// I then want to exit the subroutine.
}
if (Lastname == "")
{
..

Thanks in advance!

*** Sent via Developersdex http://www.developersdex.com ***

[glenn]

yes, just call,

return ""; or whatever you want. The return call will cause the function to
exit at that point...

glenn
"OutdoorGuy " <Ou********@fis hing.com> wrote in message
news:uX******** ******@TK2MSFTN GP12.phx.gbl...

Greetings,

I'm still relatively new to C# and was wondering if there was a way to
exit a subroutine (such as "Exit Sub" in VB)? I have the code below
which performs validations. If the user fails to enter in a First name,
then I want to set the focus to the control on the form and then exit
the subroutine. Any ideas?

private void btnSubmit_Click (object sender, System.EventArg s e)
{
..

if (this.txtFirstN ame.Text == "")
{
MessageBox.Show ("First Name is required");
this.txtFirstNa me.Focus();
// I then want to exit the subroutine.
}
if (Lastname == "")
{
..

Thanks in advance!

*** Sent via Developersdex http://www.developersdex.com ***

[OutdoorGuy]

Thanks, Clint. That seems to do the trick. However, my "Focus()"
statement is not working. I am using a tab control, so could this be
the issue? The control I want to set the focus to (i.e.,
"txtFirstna me") is on the first "tab page". Do I first need to navigate
to the tab page and then set the focus to the appropriate control?

Thanks again!

*** Sent via Developersdex http://www.developersdex.com ***

[Clint (cmueller]

OutdoorGuy wrote:

Thanks, Clint. That seems to do the trick. However, my "Focus()"
statement is not working. I am using a tab control, so could this be
the issue? The control I want to set the focus to (i.e.,
"txtFirstna me") is on the first "tab page". Do I first need to navigate to the tab page and then set the focus to the appropriate control?

Thanks again!

*** Sent via Developersdex http://www.developersdex.com ***

I believe you do have to set the correct tab first, then call Focus().
Out of curiousity, did this work correctly before the "return;" was put
in?

[OutdoorGuy]

Thanks for the info, Clint. I simply had to use the "Show" method of
the tab page object and then use the "Focus" method to set the focus to
the appropriate control. (See sample code below).

In answer to your question, the "Focus" method didn't work before I put
in the "Return" statement either. The key was simply selecting the tab
page first.

if (this.txtLastNa me.Text == "")
{
this.tabPage1.S how();
MessageBox.Show ("'Last Name' is required");
this.txtLastNam e.Focus();
return;
}

Thanks again!

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