appending text at any point in a file

[carl719]

Hi,

is there a way to insert a string into a specific part of a text file from visual basic 6?

this is the relevant code:

Open CommonDialog1.FileName For Input As #1  
Do While Not EOF(1)      
Input #1, data      
If InStr(data, Date) Then  
: stringinsertion  
Close #1     
Else      
End If  
Loop  
Close #1

so if an entry from the same date had already been recorded in the text file, would i be able to add a new string next to the date in this file using the "stringinsertion" sub? If so, what code would be required?

Many thanks.

[Dököll]

Hi,

is there a way to insert a string into a specific part of a text file from visual basic 6?

this is the relevant code:

Open CommonDialog1.FileName For Input As #1  
Do While Not EOF(1)      
Input #1, data      
If InStr(data, Date) Then  
: stringinsertion  
Close #1     
Else      
End If  
Loop  
Close #1

so if an entry from the same date had already been recorded in the text file, would i be able to add a new string next to the date in this file using the "stringinsertion" sub? If so, what code would be required?

Many thanks.

Hello!

You should Open CommonDialog1.FileName For Append As #1 to start yourself off. Input reads the file, you can also use Output As...if you read up about it, you'll see a difference but do record to file nonetheless. For additional help about a point in time to Append, please stay tuned.

You could need either a timer, or counter to be a ble to tell at which point you need to Append. If you look further into this forum you may find something already posted.

Good luck and welcome!

[Dököll]

You may also look into a Replace command whereby you can insert text into strings...

[Killer42]

Generally speaking, to modify an existing file you will probably need to write the modified text to a new file, then get rid of the old one. Writing data "in place" can be a real problem, unless the new information is exactly the same number of bytes as the old.