Set rendering datasource programmatically

using System;

using System.Linq;

using Sitecore.Data.Items;

using Sitecore.Layouts;

namespace SfN.layouts.Brainfacts2.sublayouts

{

    public partial class sltSlideshow : System.Web.UI.UserControl

    {

        protected void Page_Load(object sender, EventArgs e)

        {

            Sitecore.Layouts.RenderingReference[] renderings = Sitecore.Context.Item.Visualization.GetRenderings(Sitecore.Context.Device, true);

            Item currentItem = Sitecore.Context.Item;

            LayoutDefinition layout = LayoutDefinition.Parse(currentItem[Sitecore.FieldIDs.LayoutField]);

            foreach (DeviceDefinition device in layout.Devices)

            {

                if (device.Renderings != null)

                {

                    for (var i = 0; i < device.Renderings.Count; i++)

                    {

                        RenderingDefinition rendering = (RenderingDefinition)device.Renderings[i];

                        if (rendering.ItemID == "{AC8F2E39-52EF-4863-BB0B-DADF640B1610}")

                        {

                            Item slideShowsContainer = Sitecore.Context.Database.GetItem("{55F4132E-AC93-4A9B-BE2D-E6F7D733DFCD}");

                            Item slideshow = slideShowsContainer.GetChildren().FirstOrDefault(x => x.Name == Sitecore.Context.Item.Name);

                            if (slideshow != null)

                            {

                                rendering.Datasource = slideshow.ID.ToString();  // creates duplicates rendering in the layout details window.  

                                                                                 //rendering.DynamicProperties.Where(p => p.Name == "s:ds").ToList().ForEach(p => p.Value = datasource);

                                var slides = slideshow.Children;

                                if (slides.Count > 0)

                                {

                                    rptSlides.DataSource = slides;

                                    rptSlides.DataBind();

                                }

                            }

                            else

                                pnlSlider.Visible = false;

                        }

                    }

                }

            }          

        }

      

    }

}

================

<%@ control language="C#" autoeventwireup="true" codebehind="sltSlideshow.ascx.cs" inherits="SfN.layouts.Brainfacts2.sublayouts.sltSlideshow" %>

<script src="/scripts/brainfacts2/slideshow.js" type="text/javascript"></script>

<asp:Panel runat="server" ID="pnlSlider">

    <div class="player-slideshow">

        <div id="slideshow" class="royalSlider contentSlider rsDefault rsAutoHeight rsHor rsFade rsWithThumbs rsWithThumbsHor" data-rs="{&quot;autoHeight&quot;:true,&quot;arrowsNav&quot;:true,&quot;arrowsNavAutoHide&quot;:false,&quot;arrowsNavHideOnTouch&quot;:false,&quot;fadeinLoadedSlide&quot;:true,&quot;controlNavigationSpacing&quot;:0,&quot;controlNavigation&quot;:&quot;thumbnails&quot;,&quot;imageScaleMode&quot;:&quot;none&quot;,&quot;imageAlignCenter&quot;:false,&quot;loop&quot;:false,&quot;loopRewind&quot;:true,&quot;numImagesToPreload&quot;:6,&quot;keyboardNavEnabled&quot;:true,&quot;usePreloader&quot;:true,&quot;sliderDrag&quot;:false,&quot;navigateByClick&quot;:false,&quot;fitInViewport&quot;:false,&quot;transitionType&quot;:&quot;fade&quot;}">

            <asp:Repeater ID="rptSlides" runat="server">

                <ItemTemplate>

                    <div>

                        <sc:image field="Image" runat="server" class="rsImg" item="<%# Container.DataItem as Sitecore.Data.Items.Item %>" />

                        <div class="caption">

                            <div class="content">

                            </div>

                            <div class="source">

                                <sc:text field="Caption" runat="server" item="<%# Container.DataItem as Sitecore.Data.Items.Item %>" />

                            </div>

                        </div>

                        <div class="slide-text">

                        </div>

                        <span class="rsTmb">

                            <sc:image field="Image" runat="server" class="rsImg" item="<%# Container.DataItem as Sitecore.Data.Items.Item %>" />

                        </span>

                    </div>

                </ItemTemplate>

            </asp:Repeater>

        </div>

    </div>

</asp:Panel>