Question : ASP.NET Gridview with linkbutton

I have a gridview with linkbutton in it. But I'm hving trouble using the datakey value in my codebehind. I get an error "System.FormatException: Input string was not in a correct format."

Any help on accessing the datakeynames value?
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                                        <%# Eval("xLabel") %>
                                    
                                
                                        
                        
 
 
    Protected Sub GridTree_RowCommand(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewCommandEventArgs) Handles GridTree.RowCommand
        Dim yNode As Integer
        yNode = Me.GridTree.DataKeys(Integer.Parse(e.CommandArgument.ToString())).Value
        Dim yChunk As Integer
        yChunk = xGetChunkId(yNode)
        Select Case e.CommandName
            Case "NodeSelected"
                If yChunk Then
                    ViewState("vsTreeParent") = Me.GridTree.DataKeys(Integer.Parse(e.CommandArgument.ToString())).Value
                    Call xShowTreeNodes(ViewState("vsTreeParent"))
                Else
                    xShowChunk(yChunk)
                End If
        End Select
    End Sub
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Answer : ASP.NET Gridview with linkbutton

Because you'll have to write the linkbutton tag like this

runat="server" style="text-decoration:none; color:#000000; " CommandArgument='<% #Eval("xId") %'> ><%# Eval("xLabel") %>

And in codebehind like this

ViewState("vsTreeParent") = e.CommandArgument.ToString()
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