-
Sep 21st, 2014, 06:09 PM
#1
Thread Starter
Member
Weird thing with populating manually a dropdownlist from codebehing.
This is weird, at least to me. I have code that populates 2 dropdownlist in a gridview. DropStart And DropEnd I want to add time values depending on a few things here's the routine I cal.
Code:
Public Sub GenerateTime(RowIndex As Integer)
Dim ComboStart As New DropDownList
Dim ComboEnd As New DropDownList
Dim ItemList As ListItem
Dim TimeInterval As Integer
Dim IntervalleCalcul As Integer
Dim NombreIntervalles As Integer
Dim HeureCalcule As String
Dim Laps As Integer
ComboStart = GridDetails.Rows(RowIndex).FindControl("DropStartTime")
ComboEnd = GridDetails.Rows(RowIndex).FindControl("DropEndTime")
If Not (IsNothing(ComboStart) Or IsNothing(ComboEnd)) Then
ComboStart.Items.Clear()
ComboEnd.Items.Clear()
' --------------------------------------------
' DETERMINATION DES PARAMETRES D'INTERVALLES
' --------------------------------------------
Select Case TimeInterval
Case 5
IntervalleCalcul = 12
Laps = 5
Case 10
IntervalleCalcul = 6
Laps = 10
Case 15
IntervalleCalcul = 4
Laps = 15
Case 30
IntervalleCalcul = 2
Laps = 30
Case 60
IntervalleCalcul = 1
Laps = 60
Case Else
IntervalleCalcul = 4
Laps = 15
End Select
NombreIntervalles = 24 * IntervalleCalcul
HeureCalcule = "00:00"
ItemList = New ListItem
ItemList.Text = HeureCalcule
ItemList.Value = HeureCalcule
ComboStart.Items.Add(ItemList)
ComboEnd.Items.Add(ItemList)
For Compteur = 1 To NombreIntervalles - 1
HeureCalcule = CalculerTemps(HeureCalcule, Laps)
ItemList = New ListItem
ItemList.Text = HeureCalcule
ItemList.Value = HeureCalcule
ComboStart.Items.Add(ItemList)
ComboEnd.Items.Add(ItemList)
Next Compteur
ComboStart.DataBind()
ComboEnd.DataBind()
End If
End Sub
now this code is called, and runs fine, it goes in the for loop and I see if I trace it that combostart and comboend both have 96 Items in them as expected. hence it did find the controls in the gridview. but when I exit this sub and continue the code by just running the code in the asp.net page the two corresponding dropdown control don't get the values that did get added in the code behind.
In the RowEditing is when I call this routine.
Code:
Private Sub GridDetails_RowEditing(sender As Object, e As System.Web.UI.WebControls.GridViewEditEventArgs) Handles GridDetails.RowEditing
GridDetails.EditIndex = e.NewEditIndex
GridDetails.DataBind()
GenerateTime(GridDetails.EditIndex)
End Sub
I'm a little more than perplexed by this. lol
Last edited by MystikShadows; Sep 21st, 2014 at 07:43 PM.
Reason: Add where I call my routine from
When they say it can't be done, THAT's when they call me ;-)
MystikShadows
JC-Hosting.net
-
Sep 22nd, 2014, 08:55 PM
#2
Re: Weird thing with populating manually a dropdownlist from codebehing.
Try setting the datasource first and then calling databind method. In that case, the dropdownlist control will have values to render.
See example here: DropDownList MSDN
There's a section on how to create a DropDownList control though data binding. It's using a datatable as the datasource. You can use a collection object such as List<T> as an alternative.
KGC
-
Sep 26th, 2014, 01:25 PM
#3
Thread Starter
Member
Re: Weird thing with populating manually a dropdownlist from codebehing.
To say I did something else, I have created another dropdown, this time a database dropdown, it's not getting it's records either. the SqlDataSource it's bounded to has it's data, but it's not showing it in the gridview's dropdown list. this isn't even code, it's an SQL data source, configured that is bounded to the dropdownlist. very peculiar indeed.
Originally Posted by KGComputers
Try setting the datasource first and then calling databind method. In that case, the dropdownlist control will have values to render.
See example here: DropDownList MSDN
There's a section on how to create a DropDownList control though data binding. It's using a datatable as the datasource. You can use a collection object such as List<T> as an alternative.
KGC
When they say it can't be done, THAT's when they call me ;-)
MystikShadows
JC-Hosting.net
-
Sep 27th, 2014, 10:03 AM
#4
Re: Weird thing with populating manually a dropdownlist from codebehing.
Can you post the aspx markup?
KGC
Tags for this Thread
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts
-
Forum Rules
|
Click Here to Expand Forum to Full Width
|