Displaying records on a form...

[Bo Diddly]

Hi everyone,

I am relatively new to VB.Net, and database programming.
I have a database with four tables, set up as follows:

tblBook
BookID... key
Book... All the book titles of the Bible
tblChapter
ChapterID... key
Chapter... chapter numbers (1 - 150)
tblVerse
VerseID... key
Verse... verse number (1 - 100)
tblVerseText
ID... key
BookID
ChapterID
VerseID
VerseText... Each verse from the Bible, each in its own record

In VB.Net, I have a form with three ComboBoxes and one Label:

cmbBook... to display all the Book titles
cmbChapter... to display all the Chapter numbers
cmbVerse... to display all the verse numbers
lblVerseText... to display the verse corresponding to the selections made in
the three ComboBoxes

I can get each ComboBox to display the information from the corresponding
tables, however, I want to be able to filter each subsequent ComboBox, and
the label, to display only the information that is common to the preceding
selection.

For example:

You select 'Genesis' in cmbBook, and cmbChapter will only display the
numbers 1 - 22, (the number of chapters in Genesis).
Then you select '1' in cmbChapter, and cmbVerse will only display the
numbers 1 - 31, (the number of verses in Genesis-1).
Then you select '1' in cmbVerse, and lblVerseText will only display the
verse Genesis,1,1.

As I stated earlier, I can get each ComboBox to display ALL of the
corresponding data from their respective tables, but I would like to filter
the data according to the data currently selected in any of the COmboBoxes.

Any help would be gretly appreciated,

Gary

[Bo Diddly]

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Cor,

My method works like a charm!

I had the wrong item selected in cmbChapter.Valu eMember.

It just didn't make sense that the SQL statements would work in the
Builder but not when I ran the program.

So, I will try not to make too many changes at a time... LOL

Thanks for all the help so far!

You don't GIVE the answer... you DIRECT to the answer... A much
better way as far as I'm concerned.

Happy Holidays and Happy New Year!

Gary

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[Bo Diddly]

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OOPS,

Now I get a 'System.IndexOu tOfRangeExcepti on' error at the following
point:

Private Sub cmbVerse_Select edIndexChanged( ByVal sender As
System.Object, ByVal e As System.EventArg s) Handles
cmbVerse.Select edIndexChanged

'Code to populate lblText

HERE-> daText.SelectCo mmand.Parameter s("VerseID)").V alue =
cmbVerse.Select edValue

daText.SelectCo mmand.Parameter s("ChapterID"). Value
= cmbChapter.Sele ctedValue

daText.SelectCo mmand.Parameter s("BookID").Val ue =
cmbBook.Selecte dValue

'Clear and populate lblText

dsText.Clear()

daText.Fill(dsT ext)

End Sub

It's late, I'll look into it tomorrow,

Gray

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[Cor]

Hi Gray,

The Selected Index changed fires everytime that there is something changed
in that combobox.
Therefore you have to stop it while initializing using a switch/bool/flag.

I use the Selected Index change commited, but I think it has a bug.

I thought it works fine for me if i am using it with a dataset binded to the
datasource of the combobox

(I thought that the bug is that without a datasource it gives the previous
selectedvalue).

You can try that also, but check it well if it is working correct.

I hope this goes again?

Cor
"> OOPS,

Now I get a 'System.IndexOu tOfRangeExcepti on' error at the following
point:

Private Sub cmbVerse_Select edIndexChanged( ByVal sender As
System.Object, ByVal e As System.EventArg s) Handles
cmbVerse.Select edIndexChanged

'Code to populate lblText

HERE-> daText.SelectCo mmand.Parameter s("VerseID)").V alue =
cmbVerse.Select edValue

daText.SelectCo mmand.Parameter s("ChapterID"). Value
= cmbChapter.Sele ctedValue

daText.SelectCo mmand.Parameter s("BookID").Val ue =
cmbBook.Selecte dValue

'Clear and populate lblText

dsText.Clear()

daText.Fill(dsT ext)

End Sub

[Bo Diddly]

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Cor,

Do you see anything wrong with this line?

daText.SelectCo mmand.Parameter s("VerseID)").V alue =
cmbVerse.Select edValue

When I made the correction everything works great.
Now all that is left is to embelish the UI for the program.

I am looking for people to try it out, it is very basic at this
point, but with 35,845 records in tblVerseText, (all the verses from
the Douay-Rheims Bible), there is still some editing to do. (Mostly
typing errors ) :-)

Is there a place I can post my little program for others to see and
use?

Thanks for all the help,

Gary

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[Cor]

Hi Gray,

daText.SelectCo mmand.Parameter s("VerseID)").V alue =
cmbVerse.Select edValue
I really do not know.
I do not use it, I also did look to the documentation for this, because I
thought this was giving the error, but why I do not know. (It is also very
slightly in the documentation)
Is there a place I can post my little program for others to see and
use?

I would not do that Gray, but when you see messages here with what you can
help others, you can cut out snippets and past them in as examples.

Cor

[Bo Diddly]

Cor,

daText.SelectCo mmand.Parameter s("VerseID)").V alue =
cmbVerse.Select edValue
There is too many parentheses in the line above ;)
Is there a place I can post my little program for others to see and
use?

I would not do that Gray, but when you see messages here with what you can
help others, you can cut out snippets and past them in as examples.

Absolutely, I will do that... Small price to pay for the help I have
received!

Thanks again,

Gary