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Multipage on demand with post back not working

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This is a migrated thread and some comments may be shown as answers.

ajay asked on 10 Feb 2015, 06:46 AM

Hi Telerik forum,
I am trying to implement ondemand property of Radmultipage using the http://demos.telerik.com/aspnet-ajax/tabstrip/examples/multipage/dynamic-pageview-creation/defaultcs.aspx. It is working some how. But what i need is i want to postback on each time when tab clicked .
For this i removed clientFunction called "onClientTabselecting".

This is where i am facing the problem. I am getting the error "Multiple controls with same ID found...." . And in my two of my viewpages contain user controls
I am getting the respective error only on re-clicking on the tab which contain user control.

My design:

<telerik:RadTabStrip ID="Vehicles" runat="server" Skin="Metro" MultiPageID="RadMultiPage1"

SelectedIndex="0" Width="99%" OnTabClick="Vehicles_TabClick"

AutoPostBack="true">

<telerik:RadTab Text="Cars" PageViewID="radCars" Value="radTabCars"> </telerik:RadTab>

<telerik:RadTab Text="Train" Value="radTabTrain"> </telerik:RadTab>

<telerik:RadTab Text="Bus" CssClass="CustomTab" HoveredCssClass="HoveredTab"

Value="radTabBus">

</telerik:RadTab>

<telerik:RadTab Text="Cycle" Value="radTabCycle" > </telerik:RadTab>

<telerik:RadMultiPage ID="RadMultiPage1" runat="server" SelectedIndex="0" OnPageViewCreated="RadMultiPage1_PageViewCreated"

EnableViewState="true">

<telerik:RadPageView ID="radPVCars" runat="server">

<telerik:RadGrid ID="grdCars" runat="server" AllowSorting="true" </telerik:RadGrid>

</telerik:RagpageView>

<telerik:RadPageView ID="radPVTrain" runat="server">

<DManagement:Fax runat="server" ID="UCTrain" Status="Train" />

</telerik:RagpageView>

<telerik:RadPageView ID="radPVBus" runat="server">

<DManagement:Fax runat="server" ID="UCcyvle" Status="Bus" />

</telerik:RagpageView>

<telerik:RadPageView ID="radPVCycle" runat="server">

<telerik:RadGrid ID="grdCycle" runat="server" AllowSorting="true" </telerik:RadGrid>

</telerik:RagpageView>

Code behind:

protected void Vehicles_TabClick(object sender, RadTabStripEventArgs e)

{

AddPageView(e.Tab);

e.Tab.PageView.Selected = true;

}

private void AddPageView(RadTab tab)

{

RadPageView pageView = new RadPageView();

if (tab.Value == "radTabCars")

{

RadMultiPage1.SelectedIndex = RadMultiPage1.FindPageViewByID("radPVCars").Index;

tab.PageViewID = "radPVCars";

return;

}

else if (tab.Value == "radTabCycle")

{

RadMultiPage1.SelectedIndex = RadMultiPage1.FindPageViewByID("radPVCycle").Index;

tab.PageViewID = "radPVCycle";

return;

}

switch (tab.Value)

{

case "radTabTrain":

pageView.ID = "radPVTrain";

break;

case "radTabBus":

pageView.ID = "radPVBus";

break;

}

RadMultiPage1.PageViews.Add(pageView);

RadMultiPage1.SelectedIndex = RadMultiPage1.PageViews.Count - 1;

tab.PageViewID = pageView.ID;

}

protected void RadMultiPage1_PageViewCreated(object sender, RadMultiPageEventArgs e)

{

string uControlName = "";

string uControlId = "";

switch (e.PageView.ID)

{

case "radPVTrain":

uControlName = "~/USC/UserControls/Dgmt_vehicle.ascx";

userControlId = "VehTrain";

break;

case "radPVBus":

uControlName = "~/USC/UserControls/Dgmt_vehicle.ascx";

userControlId = "VehBus";

break;

}

Control userControl1 = Page.LoadControl(userControlName);

UserControls.Dgmt_Faxes objControl = (UserControls.Dgmt_Faxes)userControl1;

if (uControlId == "VehTrain")

objControl.Status = "Train";

else if (uControlId == "VehBus")

objControl.Status = "Bus";

userControl = (VehicleUserControl)userControl1;

userControl.ID = userControlId;

e.PageView.Controls.Add(userControl);

e.PageView.EnableViewState = true;

}

Multipage on demand with post back not working

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