[just_a_beginner]

Hi,

I want to retain a value in a variable even after the application closes, so the next time i open the application i can get that value.

It's actually an integer value, i want to count the no. of times the application has been opened. I tried using static [b] but it doesnt work. Please help.

[Goethals]

You'll have to store it in a file, or on a database.
Variables live in your RAM memory, and are cleared when
your application closes.

[just_a_beginner]

Goethals, on 22 Apr, 2009 - 12:40 AM, said:

You'll have to store it in a file, or on a database.
Variables live in your RAM memory, and are cleared when
your application closes.

Are u sure there's no keyword or anything to save that value other than a textfile?? Thanks anyway.

Do u know how to enter a large number of values into a combobox???

This post has been edited by just_a_beginner: 22 April 2009 - 02:11 AM

[Goethals]

You could store it in the registry...
Forgot about that sorry.
Be carefull doing so though,
you really dont want to mess up your registry.
I would advise saving it to a file or a database though.

[Lesco]

Have your program write to a text doc saved in the bin folder of your program.

 My.Computer.FileSystem.WriteAllText("textboxname.txt", "contents, could be variables" & "more text or" Controlchars.newline, True) 

you could keep adding more text and such before the True if you wanted to. Its been a while since i used this code but im pretty certain the option for append is set to true so that it does not erase the contents of the text document everytime you write to it, if it does erase all the contents every time you write to it simply change it to false.

as for putting the text in a list box or text box, you should be able to use the readalltext method.

 textbox1.text = My.Computer.FileSystem.ReadAllText("textdoc.txt")

[just_a_beginner]

Lesco, on 22 Apr, 2009 - 04:47 AM, said:

Have your program write to a text doc saved in the bin folder of your program.

 My.Computer.FileSystem.WriteAllText("textboxname.txt", "contents, could be variables" & "more text or" Controlchars.newline, True) 

you could keep adding more text and such before the True if you wanted to. Its been a while since i used this code but im pretty certain the option for append is set to true so that it does not erase the contents of the text document everytime you write to it, if it does erase all the contents every time you write to it simply change it to false.

as for putting the text in a list box or text box, you should be able to use the readalltext method.

 textbox1.text = My.Computer.FileSystem.ReadAllText("textdoc.txt")

Thanks.

Goethals, on 22 Apr, 2009 - 01:27 AM, said:

You could store it in the registry...
Forgot about that sorry.
Be carefull doing so though,
you really dont want to mess up your registry.
I would advise saving it to a file or a database though.

Thanks. I will use the text file.

[ra_preethi]

Is it possible to store value in app.config file and use?

[bigtonyk]

just_a_beginner, on 22 Apr, 2009 - 12:37 AM, said:

Hi,

I want to retain a value in a variable even after the application closes, so the next time i open the application i can get that value.

It's actually an integer value, i want to count the no. of times the application has been opened. I tried using static [b] but it doesnt work. Please help.

You can use Application Settings in VB.

http://msdn2.microso...y/a65txexh.aspx

[specialfreckles]

Just use the built in GetSetting, SaveSetting routines

	Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
	   
		dim Uses as Integer = cint( GetSetting( My.Application.Info.ProductName, "General", "Used", "0"))
		SaveSetting( My.Application.Info.ProductName, "General", "Used", (Uses + 1).ToString)

	End Sub

This post has been edited by specialfreckles: 21 May 2009 - 11:44 AM