Run query whenever list box changes
Hi there,
Please let me know on how to run a query whenever i change the list box. I suppose the tricky part here is to clear the block (eg. EMP) before i can select the list and run the query.
Thanks for your help
Hi Frank,
i've tried as per-instruction and end up the forms are not running and hangs. What i have in my forms, is a record group which i select distinct deptno from emp. Would you mind to explain me in details the steps ( i might wrongly putting the codes).
Thanks a lot and appreciated.
Newbie
Faizal
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[code]
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PARAMETERS var1 TYPE <your created data element>
AS LISTBOX VISIBLE LENGTH 20
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Message Edited by Michael Aivaliotis on 09-19-2005 11:54 AM
Michael Aivaliotis
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multicolumn.gif 10 KB -
InfoPath 2010 - Multiple Selection List Box - Rule Does Not Run When Unchecking Value
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Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety,
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How do i change this code so when i select a track in the list box it goes into the text box
Public Class Form3
Dim numofrecords As Integer
Dim NextID As Integer
Dim RecordNumber As Integer
Private Tableformat As String = "{0,-8}{1,-20}{2,-20}{3,-10}{4,-20}{5,-20}"
Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
FileOpen(1, "Tracks.dat", OpenMode.Random, , , Len(Tracks))
numofrecords = LOF(1) / Len(Tracks)
If numofrecords = 0 Then
NextID = numofrecords + 1
Else
FileGet(1, Tracks, numofrecords)
NextID = Tracks.TrackID + 1
End If
FileClose(1)
txtTrackID.Text = NextID.ToString
End Sub
Private Sub btnAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAdd.Click
' Get the song info from the form
Tracks.TrackID = txtTrackID.Text
Tracks.Title = txttitle.Text
Tracks.Artist = txtartist.Text
Tracks.Genre = txtGenre.Text
Tracks.Duration = txtduration.Text
Tracks.era = txtera.Text
Tracks.Otherinfo = txtBlurb.Text
Tracks.IsDeleted = 0
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FileOpen(1, "Tracks.dat", OpenMode.Random, , , Len(Tracks))
FilePut(1, Tracks, numofrecords + 1)
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FileClose(1)
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numofrecords = numofrecords + 1
NextID = NextID + 1
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txtTrackID.Focus()
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txtartist.Text = ""
txtduration.Text = ""
txtera.Text = ""
txtGenre.Text = ""
txttitle.Text = ""
End Sub
Private Sub Button10_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnClear.Click
txtartist.Text = ""
txtduration.Text = ""
txtera.Text = ""
txtGenre.Text = ""
txttitle.Text = ""
txtTrackID.Text = ""
End Sub
Private Sub lstsongs_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles lstsongs.SelectedIndexChanged
'get selected record
RecordNumber = lstsongs.SelectedIndex
'lblDebug.Text = RecordNumber
FileOpen(1, "Tracks.dat", OpenMode.Random, , , Len(Tracks))
FileGet(1, Tracks, RecordNumber)
FileClose()
'populate the input boxes
CurrentTracks = Tracks.TrackID.
txtTrackID.Text = Tracks.ToString
txtartist.Text = Tracks.Artist
txtBlurb.Text =
txtduration.Text = Tracks.Duration
txtera.Text = Tracks.era
txtGenre.Text = Tracks.Genre
txttitle.Text = Tracks.Title
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnExit.Click
Me.Close()
End Sub
Private Sub Button8_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLoad.Click
'set the filename
Filename = "Tracks.dat"
'open the file
FileOpen(1, FileName, OpenMode.Random, , , Len(Tracks))
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numofrecords = LOF(1) / Len(Tracks)
'close file
FileClose(1)
Tracks.TrackID = numofrecords + 1
txtTrackID.Text = Tracks.TrackID
End Sub
Private Sub btnList_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnList.Click
'clear list box
lstsongs.Items.Clear()
'headings
lstsongs.Items.Add(String.Format(Tableformat, "Track ID", "Title", "Artist", "Genre", "Duration", "Era"))
'open file
FileOpen(1, Filename, OpenMode.Random, , , Len(Tracks))
' Add records to list box
Do While Not EOF(1)
FileGet(1, Tracks)
lstsongs.Items.Add(String.Format(Tableformat, _
Tracks.TrackID, _
Tracks.Title, Tracks.Artist, Tracks.Genre, _
Tracks.Duration, Tracks.era))
Loop
'close file
FileClose(1)
End Sub
Private Sub lblDebug_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles lblDebug.Click
End Sub
End ClassHello,
Since a ListBox displays text then when you have a selected item simply use the Text property of the ListBox rather than SelectedItem which would be used if the data source was say an object i.e. setting the ListBox DataSource to a DataTable then we would
cast SelectedItem to a DataRowView but if all you have is text using the ListBox Text property.
Please remember to mark the replies as answers if they help and unmark them if they provide no help, this will help others who are looking for solutions to the same or similar problem.
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