Read a large txt file using VBA

Photomofo

Active Member
Joined
Aug 20, 2012
Messages
259
Here's a snippet of code that reads in a big txt file. It used to work but the size of the INPUT text file grew such that I'm now getting an out of memory error. On a whim I changed objTS.Read(objFile.Size) to objTS.Read(objFile.Size / 20) and the file is getting read again but apparently only 1/20th of it.

I'm looking for a widget that would break the file into smaller chunks but I can't seem to find one that works.

Any advice on a different way to approach this problem?

Code:
File_x = Application.GetOpenFilename()
Set objFS = CreateObject("Scripting.FileSystemObject")
Set objFile = objFS.GetFile(File_x)
Set objTS = objFile.OpenAsTextStream(ForReading, TristateFalse)
EBA_File = objTS.Read(objFile.Size / 20)


'Chop up EBA_File into Smaller Strings
'***************************************************************
k = Application.RoundUp(Len(EBA_File) / 50000000, 0)


For i = 1 To k


String_Index(i) = Mid(EBA_File, (i - 1) * 50000000 + 1, 51000000)


Next i


EBA_File = vbNullString
 
Yep... With this new data intake structure I should be able to adjust which lines of data I bring into the string array and eliminate the memory errors. Seems like as the file gets bigger I keep running into different limitations of the technique I'm using and have to rework the program. Fortunately this isn't a file I need to regularly process.

Thanks to all for your suggestions. I don't come here with my hat in hand unless I've been stuck for several hours. You guys are always great.
 
Upvote 0

Excel Facts

Convert text numbers to real numbers
Select a column containing text numbers. Press Alt+D E F to quickly convert text to numbers. Faster than "Convert to Number"

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