Need a working sample code for StrReverse and InStr

[imrosie]

Hello,

I don't completely understand the working of these functions, but it's been suggested that these will give me what I need.
I have a database that pulls in image files (stores the absolute path in database). The image shows up in my subform. The file name is displayed in a form control called 'image description'. The problem is it displays the entire link, such as c:\imageCats\Gi zmotheCat.jpg (absolute path)....

End user cah 'browse' to any folder they may have stored pictures to retrieve an image. So the absolute path will change with each end-user. I don't want to hardcode a specific path. However, I do need the absolute path to an image stored and only display in the control a name, i.e. GizmotheCat.

I'm looking for real working example code for StrReverse (InStr), so I can somehow reverse the string, cut off the 'GizmotheCat.jp g and display only the GizmotheCat in this control. I also like the .jpg to go into another control box. I've received some examples, but can't get them working in my form.

Does anyone have something like this? Thanks in advance.

Rosie

[MMcCarthy]

This function should do what you want.

[CODE=vb]
Function getFName(path As String) As String
Dim fName As String
Dim pos1 As Integer
Dim pos2 As Integer
Dim tmpPos As Integer
pos1 = 1
Do Until (InStr(pos1, path, "\") = 0)
tmpPos = InStr(pos1, path, "\")
pos1 = tmpPos + 1
Loop
pos2 = InStr(path, ".") - pos1
fName = Mid(path, pos1, pos2)
getFName = fName

End Function
[/CODE]

[ADezii]

Hello,

I don't completely understand the working of these functions, but it's been suggested that these will give me what I need.
I have a database that pulls in image files (stores the absolute path in database). The image shows up in my subform. The file name is displayed in a form control called 'image description'. The problem is it displays the entire link, such as c:\imageCats\Gi zmotheCat.jpg (absolute path)....

End user cah 'browse' to any folder they may have stored pictures to retrieve an image. So the absolute path will change with each end-user. I don't want to hardcode a specific path. However, I do need the absolute path to an image stored and only display in the control a name, i.e. GizmotheCat.

I'm looking for real working example code for StrReverse (InStr), so I can somehow reverse the string, cut off the 'GizmotheCat.jp g and display only the GizmotheCat in this control. I also like the .jpg to go into another control box. I've received some examples, but can't get them working in my form.

Does anyone have something like this? Thanks in advance.

Rosie

Rosie, Rosie, I thought we covered all this?

[FishVal]

Hello,

I don't completely understand the working of these functions, but it's been suggested that these will give me what I need.
I have a database that pulls in image files (stores the absolute path in database). The image shows up in my subform. The file name is displayed in a form control called 'image description'. The problem is it displays the entire link, such as c:\imageCats\Gi zmotheCat.jpg (absolute path)....

End user cah 'browse' to any folder they may have stored pictures to retrieve an image. So the absolute path will change with each end-user. I don't want to hardcode a specific path. However, I do need the absolute path to an image stored and only display in the control a name, i.e. GizmotheCat.

I'm looking for real working example code for StrReverse (InStr), so I can somehow reverse the string, cut off the 'GizmotheCat.jp g and display only the GizmotheCat in this control. I also like the .jpg to go into another control box. I've received some examples, but can't get them working in my form.

Does anyone have something like this? Thanks in advance.

Rosie

Hi, Rosie.

Now I've got how irrelevant was my advice to use custom class. Remember? ;)

Here I'm suggesting you the following solution.

1. Put the code below to a public module.

[CODE=vb]

Public Function ExtractFileExt( varFullPath As Variant) As String
If IsNull(varFullP ath) Then Exit Function
ExtractFileExt = StrReverse(Left (StrReverse(var FullPath), _
InStr(1, StrReverse(varF ullPath), ".")))
End Function

Public Function ExtractFileName (varFullPath As Variant) As String
If IsNull(varFullP ath) Then Exit Function
ExtractFileName = StrReverse(Mid( StrReverse(varF ullPath), _
InStr(1, StrReverse(varF ullPath), ".") + 1, _
InStr(1, StrReverse(varF ullPath), "\") - _
InStr(1, StrReverse(varF ullPath), ".") - 1))
End Function

[/CODE]

Specially for you 4 "Instr"s and 8 "StrReverse "s. ;)

The following assumes your form field with picture full path has name "txtPictureFull Path".

2. Set DataSource of the field displaying file extension to
=ExtractFileExt ([txtPictureFullP ath])

3. Set DataSource of the field displaying file name to
=ExtractFileNam e([txtPictureFullP ath])

Hope that this will help you.

Goooooogluck.

[imrosie]

Rosie, Rosie, I thought we covered all this?

We did and it's working fine...I posted this days ago and I don't know how to close the discussion other than to tell everyone, that I've got a working solution.

Thanks ADezii. take care

Rosie

[imrosie]

Hi, Rosie.

Now I've got how irrelevant was my advice to use custom class. Remember? ;)

Here I'm suggesting you the following solution.

1. Put the code below to a public module.

[CODE=vb]

Public Function ExtractFileExt( varFullPath As Variant) As String
If IsNull(varFullP ath) Then Exit Function
ExtractFileExt = StrReverse(Left (StrReverse(var FullPath), _
InStr(1, StrReverse(varF ullPath), ".")))
End Function

Public Function ExtractFileName (varFullPath As Variant) As String
If IsNull(varFullP ath) Then Exit Function
ExtractFileName = StrReverse(Mid( StrReverse(varF ullPath), _
InStr(1, StrReverse(varF ullPath), ".") + 1, _
InStr(1, StrReverse(varF ullPath), "\") - _
InStr(1, StrReverse(varF ullPath), ".") - 1))
End Function

[/CODE]

Specially for you 4 "Instr"s and 8 "StrReverse "s. ;)

The following assumes your form field with picture full path has name "txtPictureFull Path".

2. Set DataSource of the field displaying file extension to
=ExtractFileExt ([txtPictureFullP ath])

3. Set DataSource of the field displaying file name to
=ExtractFileNam e([txtPictureFullP ath])

Hope that this will help you.

Goooooogluck.

Thanks so much FishVal....I will test this out and if it works, I'll use it in a future project. ADezii gave me one that I've got working. so thanks again. I'll post back to let you know if it also fixed my issue. thanks and take care.

[NeoPa]

Rosie, In future, simply reply to the thread that you have a solution. That will let everyone know that further solutions are not required. I will not close the thread, as it seems obvious now that no further advice is required anyway.

Thanks to our expert MissingLinq for bringing this to my attention.

[ADezii]

We did and it's working fine...I posted this days ago and I don't know how to close the discussion other than to tell everyone, that I've got a working solution.

Thanks ADezii. take care

Rosie

It was a pleasure working with you.