vb 2005 and simple way to wright listview and all its propities to file

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

John - 04 Mar 2008 15:19 GMT

Hi not sure were to post this but would appreciate if someone knows
simple answer...... which usually never exists

hi have added all my items subitmes and colors etc to my listview1 in
vb 2005

is there a simple way to save the whole object to file
instead of iterating though each property

such as

Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As
System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing

FileSystem.FileOpen(1, "j:\test\lvobj.txt", OpenMode.Output,
OpenAccess.Write, OpenShare.Shared)

Write(1, obj.ToString)

FileClose(1)

End Sub

then read it in at program start

dim the file as a listview1
and it would have all my items and subitems and colors, you know
something simple

PS isn't there something magical like saveobj(.....................)
I know i'm dreaming

thanks in advance

Reply to this Message

rowe_newsgroups - 04 Mar 2008 16:31 GMT

> Hi not sure were to post this but would appreciate if someone knows
> simple answer...... which usually never exists
[quoted text clipped - 29 lines]
>
> thanks in advance

I'm not sure if the listview is serializable or not, but if it is you
can just serialize it to xml or a few different formats. You should be
able to find some serialization examples on google or in the ng
archives, just try to adapt those to the listview. If the listview
cannot be serialized, than you might be able to just save the
datasource to a file and restore the listview from there. Datasets and
datatables expose a SaveXml() and LoadXml() method that you can use
for this.

Thanks,

Seth Rowe [MVP]

Reply to this Message

Cor Ligthert[MVP] - 04 Mar 2008 17:56 GMT

Hi Seth,

I thought that I was learning something new today about dataset.

I know that it has methods WriteXML and ReadXML, or you should mean a trip
as going from Texas to New Orleans passing Amsterdam.

http://msdn2.microsoft.com/en-us/library/system.data.dataset_members(VS.71).aspx

:-)

Cor

>> Hi not sure were to post this but would appreciate if someone knows
>> simple answer...... which usually never exists
[quoted text clipped - 42 lines]
>
> Seth Rowe [MVP]

Reply to this Message

rowe_newsgroups - 04 Mar 2008 18:24 GMT

On Mar 4, 12:56 pm, "Cor Ligthert[MVP]" <notmyfirstn...@planet.nl>
wrote:

> Hi Seth,
>
[quoted text clipped - 55 lines]
>
> > Seth Rowe [MVP]

Read / Write or Save / Load, it's all the same to me!

:-)

Thanks,

Seth Rowe [MVP]

Reply to this Message

John - 04 Mar 2008 20:40 GMT

>On Mar 4, 12:56 pm, "Cor Ligthert[MVP]" <notmyfirstn...@planet.nl>
>wrote:
[quoted text clipped - 65 lines]
>
>Seth Rowe [MVP]

but just writing , such as

dim

FileSystem.FileOpen(1, "j:\test\lvobj", OpenMode.Output,
OpenAccess.Write, OpenShare.Shared)

Write(1, listview1.ToString)

does not work , do u know what i'm getting out

lets say u for x = 0 to 19 through and put 20 items out and each item
is a valuue of x and lets say you put 20 different colors out based
on x as well....

I can for eaxh item in listview1.items and put this out for each item
and color

what i'm asking is there an easy way of just writing the object or the
control in one output without iterarting through

Thanks

Reply to this Message

rowe_newsgroups - 05 Mar 2008 00:14 GMT

> On Tue, 4 Mar 2008 10:24:53 -0800 (PST), rowe_newsgroups
>
[quoted text clipped - 93 lines]
>
> - Show quoted text -

The closest thing I could think of was serialization, which is
dramatically different than just calling .ToString() with a
filestream. I did a quick test just now and it seems that the listview
cannot be directly serialized, so your best bet is to either inherits
from the listview and implement your own serialization handler (a
large, painstaking task) or to serialize the datasource of the
listview as mentioned above.

Thanks,

Seth Rowe [MVP]

Reply to this Message

kimiraikkonen - 04 Mar 2008 16:38 GMT

> Hi not sure were to post this but would appreciate if someone knows
> simple answer...... which usually never exists
[quoted text clipped - 29 lines]
>
> thanks in advance

Hi,
I'm not familiar with listview at the moment, but here is a code that
saves all the items of a "listbox" into a text file:

Dim myArray(Me.ListBox1.Items.Count - 1) As Object
Me.ListBox1.Items.CopyTo(myArray, 0)
Dim Data As String = Join(myArray, Environment.NewLine)
My.Computer.FileSystem.WriteAllText("c:\test.txt", Data, False)

Sorry, it's not listview control, but it might give you idea to
manipulate the same thing for listview control.

Reply to this Message

vb 2005 and simple way to wright listview and all its propities to file

Free Magazines