What is differ between Application.Run and .ShowDialog() ?

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alex9128 - 29 Jul 2005 21:45 GMT

Hi All,

I mean if you writing Sub Main in VB you can start you application either
way:

Dim mainfrm As Form1 = New Form1()
mainfrm.ShowDialog()

or just

Application.Run(New Form1())

What is advantage of each way? And how to count how many times user started
application and let do it only once? Looks like Shared property can't do it.

Alex

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Herfried K. Wagner [MVP] - 29 Jul 2005 22:47 GMT

"alex9128" <alex9128@hotmail.com> schrieb:

> I mean if you writing Sub Main in VB you can start you application either
> way:
[quoted text clipped - 7 lines]
>
> What is advantage of each way?

In this particular situation 'Application.Run' is semantically correct, but
'ShowDialog' isn't, because the form should not be shown as a dialog.

> And how to count how many times user started
> application and let do it only once?

<URL:http://www.yoda.arachsys.com/csharp/faq/#one.application.instance>

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M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>

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hB - 10 Aug 2005 23:25 GMT

Dialog is model window other is modless.
if there are more than one gui forms/windows then it would effect.

"What is advantage of each way? And how to count how many times user
started application"
Perhaps on Application.Exit and Start of app, manipulate this
information in some text file.

---
hB

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What is differ between Application.Run and .ShowDialog() ?

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