A Episeserver admin mode plugin that let's you see all log messages for a scheduled job instead of having to use paging

LogViewer.aspx

<%@ Page Language="c#" CodeBehind="LogViewer.aspx.cs" AutoEventWireup="False" Inherits="LatestEpi.modules.ScheduledJobLogViewer.LogViewer" Title="Title" %>

<%@ Import Namespace="EPiServer.DataAbstraction" %>

<asp:content contentplaceholderid="MainRegion" runat="server">

    <script type="text/javascript">
        function SetSelected() {
            $('#SelectedScheduledJobGUID').val($('#JobSelector').val());
            //console.log($('#JobSelector option:selected').text()); 
        }

    </script>

    <asp:HiddenField runat="server" id="SelectedScheduledJobGUID" ClientIDMode="static" />

    <div class="epi-size20">
        <div style="margin-bottom:15px">
        <asp:Repeater id="rptJobs" runat="server">
            <HeaderTemplate>
                <select id="JobSelector">
            </HeaderTemplate>
            <ItemTemplate>
                <option value="<%#Job.ID %>"><%#Job.Name %></option>
            </ItemTemplate>
            <FooterTemplate>
                </select>
            </FooterTemplate>
        </asp:Repeater>

        <div class="epi-buttonContainer epi-marginVertical">
            <span class="epi-cmsButton">
                <asp:Button  OnClientClick="SetSelected()" ClientIDMode="Static" Text="Display log" CssClass="epi-cmsButton-text epi-cmsButton-tools epi-cmsButton-Save" id="savereset" onmouseover="EPi.ToolButton.MouseDownHandler(this)" onmouseout="EPi.ToolButton.ResetMouseDownHandler(this)" runat="server" />
            </span>
         </div>
            </div>
    </div>
    <asp:Repeater id="rptEntries" runat="server">
        <HeaderTemplate>
            <table id="logtable" class="epi-default">
                <tbody>
                    <tr>
                        <th class="epitableheading">Date</th>
                        <th class="epitableheading">Duration</th>
                        <th class="epitableheading">Status</th>
                        <th class="epitableheading">Server</th>
                        <th class="epitableheading">Message</th>
                    </tr>
        </HeaderTemplate>

        <ItemTemplate>
            <tr>
                <td class="epitableheading"><%#LogItem.CompletedUtc %></td>
                <td class="epitableheading"><%#LogItem.Duration %></td>
                <td class="epitableheading"><%#LogItem.Status %></td>
                <td class="epitableheading"><%#LogItem.Server %></td>
                <td class="epitableheading"><%#LogItem.Message %></td>
            </tr>
        </ItemTemplate>

        <FooterTemplate>
             </tbody>
            </table>
        </FooterTemplate>
    </asp:Repeater>

</asp:content>

LogViewer.aspx.cs

using System;
using System.Collections.Generic;
using System.Web.Security;
using System.Web.UI.WebControls;
using EPiServer.Personalization;
using EPiServer.PlugIn;
using EPiServer.Security;
using EPiServer.Util.PlugIns;
using System.Web.UI;
using EPiServer.Shell.WebForms;
using EPiServer;
using System.Data;
using EPiServer.ServiceLocation;
using EPiServer.DataAbstraction;
using EPiServer.Scheduler;

namespace LatestEpi.modules.ScheduledJobLogViewer
{
    [GuiPlugIn(DisplayName = "ScheduledJob Logviewer", Description = "Display log items without paging", Area = PlugInArea.AdminMenu, Url = "~/modules/ScheduledJobLogViewer/LogViewer.aspx")]
    public partial class LogViewer : WebFormsBase
    {

        protected ScheduledJob Job { get { return Page.GetDataItem() as ScheduledJob; } }
        protected ScheduledJobLogItem LogItem { get { return Page.GetDataItem() as ScheduledJobLogItem; } }

        protected override void OnPreInit(EventArgs e)
        {
            base.OnPreInit(e);

            MasterPageFile = UriSupport.ResolveUrlFromUIBySettings("MasterPages/EPiServerUI.master");
            SystemMessageContainer.Heading = "ScheduledJob Logviewer";
            SystemMessageContainer.Description = "A plugin to let you view a scheduledjobs all (up to a million) without paging..";
        }

        protected override void OnLoad(EventArgs e)
        {
            var jobRepository = ServiceLocator.Current.GetInstance<IScheduledJobRepository>();

            var jobs = jobRepository.List();
            rptJobs.DataSource = jobs;
            rptJobs.DataBind();
            
            if (IsPostBack)
            {
                var selectedJobGuid = Guid.Parse(SelectedScheduledJobGUID.Value);

                var JobLogRepository = base.Locate.Advanced.GetInstance<IScheduledJobLogRepository>(); 
                PagedScheduledJobLogResult result = JobLogRepository.GetAsync(selectedJobGuid, 1, 1000000).GetAwaiter().GetResult();

                rptEntries.DataSource = result.PagedResult;
                rptEntries.DataBind();
            }
        }

    }
}

LogViewer.aspx.designer.cs

//------------------------------------------------------------------------------
// <auto-generated>
//     This code was generated by a tool.
//
//     Changes to this file may cause incorrect behavior and will be lost if
//     the code is regenerated. 
// </auto-generated>
//------------------------------------------------------------------------------

namespace LatestEpi.modules.ScheduledJobLogViewer {
    
    
    public partial class LogViewer {
        
        /// <summary>
        /// SelectedScheduledJobGUID control.
        /// </summary>
        /// <remarks>
        /// Auto-generated field.
        /// To modify move field declaration from designer file to code-behind file.
        /// </remarks>
        protected global::System.Web.UI.WebControls.HiddenField SelectedScheduledJobGUID;
        
        /// <summary>
        /// rptJobs control.
        /// </summary>
        /// <remarks>
        /// Auto-generated field.
        /// To modify move field declaration from designer file to code-behind file.
        /// </remarks>
        protected global::System.Web.UI.WebControls.Repeater rptJobs;
        
        /// <summary>
        /// savereset control.
        /// </summary>
        /// <remarks>
        /// Auto-generated field.
        /// To modify move field declaration from designer file to code-behind file.
        /// </remarks>
        protected global::System.Web.UI.WebControls.Button savereset;
        
        /// <summary>
        /// rptEntries control.
        /// </summary>
        /// <remarks>
        /// Auto-generated field.
        /// To modify move field declaration from designer file to code-behind file.
        /// </remarks>
        protected global::System.Web.UI.WebControls.Repeater rptEntries;
    }
}