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Problem passing array(list) to custom server control

I tried making a full custom server control and somehow after giving it values through the aspx web app, the array is null.

Private mStoreArray As Array
 
    Public Property StoreArray() As Array
        Get
            Return mStoreArray
        End Get
        Set(ByVal value As Array)
            mStoreArray = value
        End Set
    End Property
 
Dim i As Short
        For i = 0 To StoreArray.Length - 1
            output.RenderBeginTag(HtmlTextWriterTag.Tr)
            output.RenderBeginTag(HtmlTextWriterTag.Td)
            output.Write(StoreArray(i))
            output.RenderEndTag()
            output.RenderEndTag()
        Next

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john_steed

Hi,

I'm assuming the code below is contained in a render function
For i = 0 To StoreArray.Length - 1
output.RenderBeginTag(HtmlTextWriterTag.Tr)
output.RenderBeginTag(HtmlTextWriterTag.Td)
output.Write(StoreArray(i))
output.RenderEndTag()
output.RenderEndTag()
Next

So you need to make sure you've filled the array BEFORE this executes, also after a postback the array is empty, so you need to fill it again or store it in the viewstate

hope this helps

Sharalynn

ASKER

Hi,

Yes that code is contained in the RenderContents method, and I have previously tried to populate the array on Page_Load in my testWebsite. The objArray.Length executed here indeed returns So what is wrong here?

 Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
   Dim dataList As String
        Dim MCListBox As New MCListBox.MCListBox
        Dim objArray As Array
        dataList = "1;Storage;2;Database;3;" & _
        "Security;4;JavaScript;5;Web Programming;6;" & _
        "Networking"
        objArray = dataList.Split(";")
        PagedListBox.StoreArray = objArray
End Sub

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john_steed

Hi,

Try putting a breakpoint on where you fill the array and where you use it to populate the control. If the control renders first, fill it in Page_Init instead

Hope this helps

Cheers

Sharalynn

ASKER

Hi, I've checked and the flow is accordingly to the way it is supposed to be at least for the Page_Load, but after that all goes bonkers.

ASKER CERTIFIED SOLUTION

john_steed

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