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ListVies.SaveToFile ??

koger
koger asked
on
Medium Priority
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Last Modified: 2012-06-22
ListVies.SaveToFile ??

Hi there, I need to save the contents of a ListView with multiply columns, I have thought of
saving each column by coping the contents of a column to a TStringList and then save in a new file, so the file would look something like this

[Column1]
.
.
.
.


[Column2]
.
.
.
.


The file gets rather big, so isn't there a better way to do that?
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Commented:
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Commented:
var
  Stream: TFileStream;
begin
{++Save ListView items++}
Stream := TFileStream.Create('ListView1.dat', fmCreate);
Stream.WriteComponentRes('Items', ListView1);
Stream.Destroy;

{++Load ListView items++}
Stream := TFileStream.Create('ListView1.dat', fmOpenRead);
Stream.ReadComponentRes(ListView1);
Stream.Destroy;

Author

Commented:
Very good answer

The only problem is that the code is very very slow, it can take more than ten minuttes to load a file with about 1000 columns and 8 rows, the problem is not your code, but TListView's add procedure it's very slow I have tried using AllocBy, but it didn't help.

Commented:
Hi,
I think there are some speed improved listviews on DSP or Torry's.
Look them up, I hope they might speed up things for you...
You can also use beginupdate/endupdate on the TStringLists to speed up things some.

/// John
lavar's code works really well, just what I was looking for. thanks!
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