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Rank: Newbie
Groups: Member
Joined: 10/16/2007
Posts: 5
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Hello, Not sure what I'm doing wrong - trying to programatically data bind to a menu. The text is coming through, but I can't seem to change other parameters. A second, related question is: How do I make a menuitem non-selectable?
Code: Visual Basic.NET
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim mainDs As DataSet = CreateDataSet()
eomnuMain.DataSource = mainDs
eomnuMain.DataFields = "ID|ParentID|Name|Value|Disabled|Separator|LookID|SideImage"
Dim bindingDisabled As New EO.Web.DataBinding()
bindingDisabled.DataField = "Disabled"
bindingDisabled.Property = "RaisesServerEvent "
eomnuMain.Bindings.Add(bindingDisabled)
Dim bindingSeparator As New EO.Web.DataBinding()
bindingSeparator.DataField = "Separator"
bindingSeparator.Property = "IsSeparator"
eomnuMain.Bindings.Add(bindingSeparator)
Dim bindingLookID As New EO.Web.DataBinding()
bindingLookID.DataField = "LookID"
bindingLookID.Property = "LookID"
eomnuMain.Bindings.Add(bindingLookID)
Dim bindingSideImage As New EO.Web.DataBinding()
bindingSideImage.DataField = "SideImage"
bindingSideImage.Property = "SideImage"
eomnuMain.Bindings.Add(bindingSideImage)
Dim binding As New EO.Web.DataBinding()
binding.DataField = "Name"
binding.Property = "Text-Html"
eomnuMain.Bindings.Add(binding)
' Populate from the data source (mainTable);
eomnuMain.DataBind()
Me.GVMenu.DataSource = mainDs.Tables("Main")
GVMenu.DataBind()
End Sub
Private Function CreateDataSet() As DataSet
'Define a DataSet
Dim ds As New DataSet()
'Get Data from MasterAssignments
Dim dsMasterAssign As DataSet = CreateAssignmentMaster()
'check for empty menu
Dim blnCurrent As Boolean = False
Dim blnCompleted As Boolean = False
Dim blnLibrary As Boolean = False
Dim x, y As Integer
'Create the DataTable object
Dim table As DataTable = ds.Tables.Add("Main")
Dim menuID As DataColumn = table.Columns.Add("ID", GetType(Integer))
Dim menuparentID As DataColumn = table.Columns.Add("ParentID", GetType(Integer))
Dim menuName As DataColumn = table.Columns.Add("Name", GetType(String))
Dim menuValue As DataColumn = table.Columns.Add("Value", GetType(String))
Dim menuSelectable As DataColumn = table.Columns.Add("Disabled", GetType(Boolean))
Dim menuSeparator As DataColumn = table.Columns.Add("Separator", GetType(Boolean))
Dim menuLookID As DataColumn = table.Columns.Add("LookID", GetType(String))
Dim menuSideImage As DataColumn = table.Columns.Add("SideImage", GetType(String))
table.Rows.Add(New Object() {1, Nothing, "Main", "Main", 0, 1, "_TopLevelItem"})
table.Rows.Add(New Object() {2, 1, "Email", "Email", 1, 0, "_Default"})
table.Rows.Add(New Object() {3, 1, "Logout", "Logout", 1, 0, "_Default"})
table.Rows.Add(New Object() {1000, Nothing, Nothing, "Separator", 0, 1, "_Separator", Nothing})
'Define relations
Dim r As DataRelation = ds.Relations.Add(menuID, menuparentID)
r.Nested = True
Return ds
End Function
Code: HTML/ASPX
<eo:Menu ID="eomnuMain" runat="server" CssFile="~/MasterStyleSheet.css" RaisesServerEvent="True" Style="position: relative" Width="800px">
<LookItems>
<eo:MenuItem ItemID="_TopGroup">
<SubMenu ItemSpacing="3" LeftIconCellWidth="25" SideImage="OfficeXPSideBar" Style-CssText="background-color:#2f3451;border-bottom-color:white;border-bottom-style:solid;border-bottom-width:5px;border-left-color:white;border-left-style:solid;border-left-width:5px;border-right-color:white;border-right-style:solid;border-right-width:5px;border-top-color:white;border-top-style:solid;border-top-width:5px;color:white;cursor:hand;font-family:skia;font-size:10pt;padding-bottom:1px;padding-left:1px;padding-right:1px;padding-top:1px;">
</SubMenu>
</eo:MenuItem>
<eo:MenuItem ItemID="_TopLevelItem" DisabledStyle-CssText="background-color:transparent;border-bottom-style:none;border-left-style:none;border-right-style:none;border-top-style:none;padding-bottom:1px;padding-left:5px;padding-right:5px;padding-top:1px;color:lightgrey"
Height="24" HoverStyle-CssText="background-color:#c1d2ee;border-bottom-color:#316ac5;border-bottom-style:solid;border-bottom-width:1px;border-left-color:#316ac5;border-left-style:solid;border-left-width:1px;border-right-color:#316ac5;border-right-style:solid;border-right-width:1px;border-top-color:#316ac5;border-top-style:solid;border-top-width:1px;padding-left:4px;padding-right:4px;padding-top:0px;padding-bottom:0px;"
NormalStyle-CssText="background-color:transparent;border-bottom-style:none;border-left-style:none;border-right-style:none;border-top-style:none;padding-bottom:1px;padding-left:5px;padding-right:5px;padding-top:1px;"
SelectedStyle-CssText="background-color:white;border-bottom-color:#316ac5;border-bottom-style:solid;border-bottom-width:1px;border-left-color:#316ac5;border-left-style:solid;border-left-width:1px;border-right-color:#316ac5;border-right-style:solid;border-right-width:1px;border-top-color:#316ac5;border-top-style:solid;border-top-width:1px;padding-left:4px;padding-right:4px;padding-top:0px;padding-bottom:0px;">
<SubMenu CollapseEffect-Duration="150" CollapseEffect-Type="Fade" ExpandEffect-Duration="150"
ExpandEffect-Type="Fade" ItemSpacing="3" LeftIconCellWidth="25"
Style-CssText="background-color:#fcfcf9;border-bottom-color:#999999;border-bottom-style:solid;border-bottom-width:1px;border-left-color:#999999;border-left-style:solid;border-left-width:1px;border-right-color:#999999;border-right-style:solid;border-right-width:1px;border-top-color:#999999;border-top-style:solid;border-top-width:1px;color:black;cursor:hand;font-family:Tahoma;font-size:8pt;padding-bottom:1px;padding-left:1px;padding-right:1px;padding-top:1px;">
</SubMenu>
</eo:MenuItem>
<eo:MenuItem ItemID="_Separator" Image-Padding-All="3" Image-Padding-Bottom="3" Image-Padding-Left="3"
Image-Padding-Right="3" Image-Padding-Top="3" IsSeparator="True"
NormalStyle-CssText="border-right: #6e7d8d 1px solid; border-top: #abc3dc 1px solid; margin: 2px; border-left: #abc3dc 1px solid; width: 1px; border-bottom: #6e7d8d 1px solid; height: 1px">
</eo:MenuItem>
<eo:MenuItem ItemID="_Default" DisabledStyle-CssText="background-color:transparent;border-bottom-style:none;border-left-style:none;border-right-style:none;border-top-style:none;padding-bottom:1px;padding-left:2px;padding-right:5px;padding-top:1px;color:lightgrey"
Height="24" HoverStyle-CssText="background-color:#c1d2ee;border-bottom-color:#316ac5;border-bottom-style:solid;border-bottom-width:1px;border-left-color:#316ac5;border-left-style:solid;border-left-width:1px;border-right-color:#316ac5;border-right-style:solid;border-right-width:1px;border-top-color:#316ac5;border-top-style:solid;border-top-width:1px;padding-left:1px;padding-right:4px;padding-top:0px;"
NormalStyle-CssText="background-color:transparent;border-bottom-style:none;border-left-style:none;border-right-style:none;border-top-style:none;padding-bottom:1px;padding-left:2px;padding-right:5px;padding-top:1px;"
SelectedStyle-CssText="background-color:white;border-bottom-color:#316ac5;border-bottom-style:solid;border-bottom-width:1px;border-left-color:#316ac5;border-left-style:solid;border-left-width:1px;border-right-color:#316ac5;border-right-style:solid;border-right-width:1px;border-top-color:#316ac5;border-top-style:solid;border-top-width:1px;padding-left:1px;padding-right:4px;padding-top:0px;"
Text-Padding-Right="30">
<SubMenu CollapseEffect-Duration="150" CollapseEffect-Type="Fade" ExpandEffect-Duration="150"
ExpandEffect-Type="Fade" ItemSpacing="3" LeftIconCellWidth="25" SideImage="OfficeXPSideBar"
Style-CssText="background-color:#fcfcf9;border-bottom-color:#999999;border-bottom-style:solid;border-bottom-width:1px;border-left-color:#999999;border-left-style:solid;border-left-width:1px;border-right-color:#999999;border-right-style:solid;border-right-width:1px;border-top-color:#999999;border-top-style:solid;border-top-width:1px;color:black;cursor:hand;font-family:Tahoma;font-size:8pt;padding-bottom:1px;padding-left:1px;padding-right:1px;padding-top:1px;">
</SubMenu>
</eo:MenuItem>
</LookItems>
</eo:Menu>
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Rank: Administration
Groups: Administration
Joined: 5/27/2007
Posts: 24,217
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Hi,
DataField property is wrong. That property is used to specify the key information. So if you specify 3 fields there, the menu will try to populate 3 levels. Obviously you don't have that many levels. You probably only want "ID|ParentID".
The Property value for Most of your DataBinding objects is also wrong. The value is not always the same as the name of the Property, and some properties are not supported. To find out which one is supported and the correct value, use Menu Builder to create the DataBinding object.
A menu is always "clickable" unless it is disabled. The difference is what you do after it is clicked. Clicking a menu does nothing if RaisesServerEvent if false and NavigateUrl is empty. However you may wish to give such items different styles --- for example, grayed out styles. In that case you would set DisabledStyle and also set the menu item's Disabled to true.
Thanks
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Rank: Newbie
Groups: Member
Joined: 10/16/2007
Posts: 5
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Thank you, that clarified things quite a bit.
I'm still in need of a solution for the following situation though.
My entire menu is generated through code behind.
I'd like to have the TopGroup's RaisesServerEvent set to false to prevent clicking, but when I do this, my entire menu does not respond (i.e. clicking on an item from the drop down does not raise an event).
If I disable an item from the top group, it will not drop down the menu on a hover over.
I can check the value of the item after it's selected, but I'm trying to avoid the postback altogether.
Can I set up the menu so that only the top level does not raise an event, and yet the lower levels will?
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Rank: Administration
Groups: Administration
Joined: 5/27/2007
Posts: 24,217
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Hi, The way RaisesServerEvent works is that each child item uses the value of its parent item as default value. So if you have: Parent = false; Child = not set; Then "Child" will take a value of "false". In order for the child item to take value true, you must explicitly set it. Parent = false; Child = true; The easiest way for you to do this is to handle ItemDataBound event. Inside that event you can do:
Code: C#
if (e.MenuItem.Level == 0)
e.MenuItem.RaisesServerEvent = false;
else
e.MenuItem.RaisesServerEvent = true;
Thanks
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Rank: Newbie
Groups: Member
Joined: 10/16/2007
Posts: 5
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Almost there...
I now get the error
Value of type 'Boolean' cannot be converted to 'EO.Web.NullableBool'.
Thanks for the help...
RGWD
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Rank: Administration
Groups: Administration
Joined: 5/27/2007
Posts: 24,217
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Ah. Do e.MenuItem.RaisesServerEvent = EO.Web.NullableBool.True. Sorry about that.
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Rank: Newbie
Groups: Member
Joined: 10/16/2007
Posts: 5
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That did it!
Thanks for the help,
RGWD
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