Add templated Column using code behind

Brendan posted over 16 years ago

I'm trying to to something very similar to this:

http://forums.labs.infragistics.com/forums/t/842.aspx

But I want to do it via code behind and am having no luck. Right now a column is created but it does not paint my template This is what I have so far:

My grid builds fine - in the prerender of the page I add my templated column

Dim btnCol As New Infragistics.WebUI.UltraWebGrid.TemplatedColumn()
With btnCol
.CellTemplate = New ActionColumnTemplate
.IsBound = True
.Type = ColumnType.Custom
.Key = "btn"
.CellButtonDisplay = CellButtonDisplay.Always
.BaseColumnName = "iProductID"
End With

ResultsGridUltra.Columns.Insert(0, btnCol)

My template looks like this:

Public Class ActionColumnTemplate
Implements ITemplate

Private WithEvents _actionButton As ImageButton
Public Sub InstantiateIn(ByVal container As System.Web.UI.Control) Implements System.Web.UI.ITemplate.InstantiateIn
_actionButton = New ImageButton
_actionButton.ImageUrl = "..//images/action.gif"

container.Controls.Add(_actionButton)

End Sub

End Class

Any ideas?

25

Brendan posted over 16 years ago in reply to [Infragistics] Helen Emerson

I figured out my issue. It's an order of events issue. I was trying to add the templated column in the page pre-render. I needed to handle the InitializeLayout event of the grid and add it at that point. I'm using the latest version of the grid (2007 vol3) and .NET 2.0 so the examples weren't very useful. I converted them to 2.0 but then couldn't step through them because of the different grid version.

Anyway - for those who might hit this in the future the code looks like this:
Private Sub MyGrid_Initialize(ByVal sender As Object, ByVal e As Infragistics.WebUI.UltraWebGrid.LayoutEventArgs) Handles MyGrid.InitializeLayout        Dim btnCol As New Infragistics.WebUI.UltraWebGrid.TemplatedColumn()        With btnCol
.CellTemplate = New ActionColumnTemplate
.IsBound = True
.Type = ColumnType.Custom
.Key = "btn"
.CellButtonDisplay = CellButtonDisplay.Always
.BaseColumnName = "iColID"
.DefaultValue = "GO"
.Width = System.Web.UI.WebControls.Unit.Pixel(30)
End With
MyGrid.Bands(0).Columns.Insert(0, btnCol)
    End Sub

And my templated col class:
Public Class ActionColumnTemplate    Implements ITemplate
Private WithEvents _actionButton As ImageButton

Public Sub InstantiateIn(ByVal container As System.Web.UI.Control) Implements System.Web.UI.ITemplate.InstantiateIn
Dim ci As Infragistics.WebUI.UltraWebGrid.CellItem = CType(container, Infragistics.WebUI.UltraWebGrid.CellItem)
_actionButton = New ImageButton

With _actionButton
.ImageUrl = "go.gif"
.ID = "ab_" & ci.Text
End With
container.Controls.Add(_actionButton)
End Sub
End Class
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1171

[Infragistics] Helen Emerson posted over 16 years ago

Have you seen the example in the knowledgebase for creating dynamic column templates?
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