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Help: Checkbox in datalist - checked status = ALWAYS FALSE!

P: n/a
Simple: I have a datalist that is holding a bunch of job opportunities.
Beside each opp (in the item template) there's a checkbox that says "apply".

After the datalist there's a button that say's "process". I want to LOOP
through each datalist entry and see if the user checked the check box.
Simple.

I wrote the code, but the checked value is ALWAYS False. Any ideas?

Here's the code...
Dim i As Integer, cb As CheckBox, MyJobId As Label, MyJob As Label,
JobAppliedFor As String
For i = 0 To Me.DataList1.Items.Count - 1
cb = CType(Me.DataList1.Items(i).Controls(7), CheckBox)
If cb.Checked = True Then ' THIS ALWAYS SAYS FALSE!!!
' get the job id and the job title
MyJobId = CType(Me.DataList1.Items(i).Controls(1), Label)
MyJob = CType(Me.DataList1.Items(i).Controls(3), Label)

' build a string of everything they checked
JobAppliedFor += MyJobId.Text & ":" & MyJob.Text & ","
End If
Next
Response.Write(JobAppliedFor)

Thanks in advance!
Nov 19 '05 #1
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1 Reply


P: n/a
Hi ???

Here's my solution to that one. Your problem is that you're looking for the
wrong thing in the wrong place! You need to find a control inside the
label, believe it or not.

It helps to set trace="true" and look through the hierarchy of the page.

Check out the code below and let us know if it helps?

Ken
Microsoft MVP [ASP.NET]
Toronto

<form id="Form1" method="post" runat="server">
<asp:datalist id="DataList1" runat="server">
<itemtemplate>
<asp:label id="lblMyJobId" runat="server">
<%# DataBinder.Eval( Container.DataItem, "MyJobId")
%>
</asp:label>
<asp:label id="lblMyJob" runat="server">
<%# DataBinder.Eval( Container.DataItem, "MyJob") %>
</asp:label>
<asp:label id="Label3" runat="server">
<%# DataBinder.Eval(Container.DataItem,
"CurrencyValue") %>
</asp:label>
<asp:CheckBox id="thecheckbox" runat="server"
Checked='<%# DataBinder.Eval(Container.DataItem, "Boolean") %>'>
</asp:checkbox>
</itemtemplate>
</asp:datalist>
<p>
<asp:button id="Button1" runat="server"
Text="Button"></asp:button></p>
</form>

Private Sub Page_Load(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles MyBase.Load
If Not IsPostBack Then
DataList1.DataSource = CreateDataSource()
DataList1.DataBind()
End If
End Sub
Private Sub Button1_Click _
(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
Dim i As Integer, cb As CheckBox, _
MyJobId As DataBoundLiteralControl, _
MyJob As DataBoundLiteralControl, _
JobAppliedFor As String
For i = 0 To Me.DataList1.Items.Count - 1
cb = DataList1.Items(i).FindControl("thecheckbox")
If Not IsNothing(cb) Then
If cb.Checked = True Then
MyJobId = DataList1.Items(i). _
FindControl("lblMyJobID").Controls(0)
MyJob = DataList1.Items(i). _
FindControl("lblMyJob").Controls(0)
JobAppliedFor = JobAppliedFor & MyJobId.Text & ":" & _
MyJob.Text & ","
End If
End If
Next
Response.Write(JobAppliedFor)
End Sub
Function CreateDataSource() As DataTable
Dim dt As New DataTable
Dim dr As DataRow
dt.Columns.Add(New DataColumn _
("MyJobId", GetType(Int32)))
dt.Columns.Add(New DataColumn _
("MyJob", GetType(String)))
dt.Columns.Add(New DataColumn _
("CurrencyValue", GetType(Double)))
dt.Columns.Add(New DataColumn _
("Boolean", GetType(Boolean)))
Dim i As Integer
For i = 0 To 4
dr = dt.NewRow()
dr(0) = i
dr(1) = "Job " + i.ToString()
dr(2) = 1.23 * (i + 1)
dr(3) = (i = 4)
dt.Rows.Add(dr)
Next i
Return dt
End Function 'CreateDataSource

"VB Programmer" <xD**********@Dont.com> wrote in message
news:u3**************@tk2msftngp13.phx.gbl...
Simple: I have a datalist that is holding a bunch of job opportunities.
Beside each opp (in the item template) there's a checkbox that says
"apply".

After the datalist there's a button that say's "process". I want to LOOP
through each datalist entry and see if the user checked the check box.
Simple.

I wrote the code, but the checked value is ALWAYS False. Any ideas?

Here's the code...
Dim i As Integer, cb As CheckBox, MyJobId As Label, MyJob As Label,
JobAppliedFor As String
For i = 0 To Me.DataList1.Items.Count - 1
cb = CType(Me.DataList1.Items(i).Controls(7), CheckBox)
If cb.Checked = True Then ' THIS ALWAYS SAYS FALSE!!!
' get the job id and the job title
MyJobId = CType(Me.DataList1.Items(i).Controls(1), Label)
MyJob = CType(Me.DataList1.Items(i).Controls(3), Label)

' build a string of everything they checked
JobAppliedFor += MyJobId.Text & ":" & MyJob.Text & ","
End If
Next
Response.Write(JobAppliedFor)

Thanks in advance!


Nov 19 '05 #2

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