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Render Selected Step Only
Setting the RenderedSteps property to Active loads only the content of the active step. When another step is selected, RadWizard will make a request to the server in order to load the content of the newly selected step.
When a large amount of data and HTML is loaded in each RadWizardStep, setting the RenderedSteps to Active can significantly improve the performance of your application. By default this property is set to All and the content of all steps is loaded on the page.
Example 1 demonstrates how to enable this option by setting the RenderedSteps to Active.
ASPNET
<telerik:RadWizard RenderMode="Lightweight" ID="RadWizard7" runat="server" RenderedSteps="Active">
<WizardSteps>
<telerik:RadWizardStep ID="RadGridStep" runat="server" StepType="Step">
<uc:radgridsusercontrolcs runat="server" id="RadGridsUserControlCS" />
</telerik:RadWizardStep>
<telerik:RadWizardStep ID="RadSchedulerStep" runat="server" StepType="Step">
<uc:radschedulerusercontrolcs runat="server" id="RadSchedulerUserControlCS" />
</telerik:RadWizardStep>
<telerik:RadWizardStep ID="RadHtmlChart" runat="server" StepType="Step">
<uc:radhtmlchartusercontrolcs runat="server" id="RadSchedulerUserControlCS1" />
</telerik:RadWizardStep>
</WizardSteps>
</telerik:radwizard>