quote:

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Originally posted by MichaelP

Jon,
When I've done dynamic controls like this, I've always had to "hack" it to make it work. Basically, I create a very special ID for each control, so that they stand out from any other web form control. Upon postback, I loop through the request.form collection, find my "special" controls and handle them as needed. It's not very easy to work with, but it is dynamic.

Michael

<Yoda>Use the Search page you must. Find the answer you will.</Yoda>

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        Dim i As Integer
        Dim chk As Web.UI.WebControls.CheckBox

        For i = 1 To 10
            With Panel1
                chk = New CheckBox
                chk.Text = "Value #" & i
                chk.ID = "Check" & i
                chk.Checked = False
                .Controls.Add(chk)
                .Controls.Add(New LiteralControl("<BR>"))
            End With
        Next

        Dim c As Control
        For Each c In Panel1.Controls
            If Left(c.ID, 5) = "Check" Then
                If DirectCast(c, CheckBox).Checked Then
                    Response.Write(c.ID & " is checked!<BR>")
                End If
            End If
        Next

chk.ID = "Check" & i & "|" & oDataRow("EmployeeID")

quote:

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Originally posted by ehorn

It is a very nice example :)

Jon, is this something you will be doing in a datagrid or other type of repeating control?

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quote:

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Originally posted by jsmith8858

I'm not sure what you mean by "Fire off the check box event" ... do you mean add a handler to the CheckChanged event? I don't know if you can handle that event with server-side code.

If you mean can you dynamically check it on or off, sure -- just something like this:

DirectCast(panel1.FindControl( < control's ID here>), CheckBox).Checked = True

if it was an event you could handle server-side, on creation of the control you'd use AddHandler like this:

AddHandler chk.CheckedChanged, AddressOf CheckBox1_CheckedChanged

assuming "CheckBox1_CheckedChanged" was the name of a function with the proper signature. However, as mentioned, I don't believe server-side code can handle this event (I may be wrong).

- Jeff

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    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'Put user code to initialize the page here

        Dim i As Integer
        Dim chk As Web.UI.WebControls.CheckBox

        For i = 1 To 10
            With Panel1
                chk = New CheckBox
                chk.Text = "Value #" & i
                chk.ID = "Check" & i
                chk.Checked = False
                chk.AutoPostBack = True
                AddHandler chk.CheckedChanged, AddressOf CheckBox1_CheckedChanged
                .Controls.Add(chk)
                .Controls.Add(New LiteralControl("<BR>"))
            End With
        Next

    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim c As Control
        Response.Write("Button Pressed!<BR>")
        For Each c In Panel1.Controls
            If Left(c.ID, 5) = "Check" Then
                If DirectCast(c, CheckBox).Checked Then
                    Response.Write(c.ID & " is checked!<BR>")
                End If
            End If
        Next

    End Sub


    Private Sub CheckBox1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CheckBox1.CheckedChanged
        Response.Write("Event! " & DirectCast(sender, WebControl).ID & " has been checked!<BR>")
    End Sub

quote:

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Originally posted by jsmith8858

Just edited my last post -- the key is to use:

chk.AutoPostBack = True

to ensure the server receives the CheckedChange event.

- Jeff

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