Send scheduled Reminder/Alerts by email in SharePoint

using System;
using System.Collections.Generic;
using System.Text;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.WebControls;
using System.Web.UI;

namespace Mullivan.SharePoint.WebParts
{
    public class MostViewedEditor : EditorPart
    {
        private CheckBox _cboxIsUserQuery = null;
        private DropDownList _ddlSpan = null;
        private DropDownList _ddlReturnCount = null;
        private DropDownList _ddlScope = null;
        private TextBox _tboxExtensions = null;

        public MostViewedEditor(string webPartId)
        {
            this.ID = webPartId + "_LibNavLinksEditor";
        }

        protected override void OnInit(EventArgs e)
        {
            _cboxIsUserQuery = new CheckBox();
            _ddlSpan = new DropDownList();
            _ddlReturnCount = new DropDownList();
            _ddlScope = new DropDownList();
            _tboxExtensions = new TextBox();

            _cboxIsUserQuery.ID = "cboxUserQuery";
            _ddlReturnCount.ID = "ddlReturnCount";
            _ddlSpan.ID = "ddlSpan";
            _ddlScope.ID = "ddlScope";
            _tboxExtensions.ID = "tboxExtensions";

            _ddlReturnCount.Items.Add("5");
            _ddlReturnCount.Items.Add("10");
            _ddlReturnCount.Items.Add("15");
            _ddlReturnCount.Items.Add("20");
            _ddlReturnCount.SelectedValue = "10";

            _ddlSpan.Items.Add("1");
            _ddlSpan.Items.Add("7");
            _ddlSpan.Items.Add("14");
            _ddlSpan.Items.Add("30");
            _ddlSpan.SelectedValue = "7";

            ListItem liTopLevelSite = new ListItem("Top Level Site", "TopLevelSite");
            ListItem liCurrentSite = new ListItem("This Site", "CurrentSite");
            _ddlScope.Items.Add(liTopLevelSite);
            _ddlScope.Items.Add(liCurrentSite);

            _ddlScope.SelectedValue = "CurrentSite";

            base.OnInit(e);
        }

        protected override void CreateChildControls()
        {

            #region "HTML"
            Literal litBeginHtml = new Literal();
            litBeginHtml.Text = @"
<br />
<div>
<table cellspacing=""0"" cellpadding=""0"" border=""0"" style=""width:0px; width:100%;border-collapse:collapse;"">
	<tr>
		<td>
            <div class=""UserSectionTitle"">
                <a id=""{0}_MVQueryCategory_IMAGEANCHOR"" TabIndex=""0"" onkeydown='MSOMenu_KeyboardClick(this, 13, 32);' 
                style='cursor:hand' 
                onclick=""javascript:MSOTlPn_ToggleDisplay('{0}_MVQueryCategory', '{0}_MVQueryCategory_IMAGE', '{0}_MVQueryCategory_ANCHOR', 'Expand category: Query', 'Collapse category: Query','{0}_MVQueryCategory_IMAGEANCHOR');"" 
                title=""Collapse category: Query"" >
                    &nbsp;<img id=""{0}_MVQueryCategory_IMAGE"" alt=""Collapse category: Query"" border=""0"" src=""/_layouts/images/TPMin2.gif"" />&nbsp;
                </a>
                <a TabIndex=""-1"" 
                    onkeydown='MSOMenu_KeyboardClick(this, 13, 32);' 
                    id=""{0}_MVQueryCategory_ANCHOR"" 
                    style='cursor:hand' 
                    onclick=""javascript:MSOTlPn_ToggleDisplay('{0}_MVQueryCategory', '{0}_MVQueryCategory_IMAGE', '{0}_MVQueryCategory_ANCHOR', 'Expand category: Query', 'Collapse category: Query','{0}_MVQueryCategory_IMAGEANCHOR');"" 
                    title=""Collapse category: Query"" >&nbsp;Query
                </a>
            </div>
        </td>
    </tr>
</table>
<div id=""{0}_MVQueryCategory"">
    <table cellspacing=""0"" border=""0"" style=""border-width:0px;width:100%;border-collapse:collapse;"">";
            Literal litEndHtml = new Literal();
            litEndHtml.Text = @"
    </table>
</div>";
            #endregion "HTML"

            this.Controls.Add(litBeginHtml);

            AppendEditControl("User Only", "If set to true, the query will only display the most viewed items by the current user.", _cboxIsUserQuery, this.Controls);
            AppendEditControl("Scope", "", _ddlScope, this.Controls);
            AppendEditControl("Return Count", "The amount of items returned.", _ddlReturnCount, this.Controls);
            AppendEditControl("Span (Days)", "The amount of days back the query should go to determine the hit count for each item.", _ddlSpan, this.Controls);
            AppendEditControl("Extensions", "A collection of document extensions that determine what types of content should be returned. (Seperate with a comma for multiples).", _tboxExtensions, this.Controls);

            this.Controls.Add(litEndHtml);

            base.CreateChildControls();
        }

        private void AppendEditControl(string displayName, string description, WebControl control, ControlCollection controlCollection)
        {
            Literal litBeginHtml = new Literal();
            Literal litEndHtml = new Literal();

            controlCollection.Add(litBeginHtml);
            controlCollection.Add(control);
            controlCollection.Add(litEndHtml);


            litBeginHtml.Text = string.Format(@"
		<tr>
			<td>
			    <div class=""UserSectionHead"">
			        <LABEL FOR=""{0}"" 
			               TITLE=""{2}"">{1}
			        </LABEL>
			    </div>
			    <div class=""UserSectionBody"">
			        <div class=""UserControlGroup"">
			            <nobr>", control.ClientID, displayName, description);
            litEndHtml.Text = @"
                        </nobr>
			        </div>
			    </div>
			    <div style='width:100%' class='UserDottedLine'>
			    </div>
		    </td>
	    </tr>";

            control.CssClass = "UserInput";
            control.Style[HtmlTextWriterStyle.Width] = "176px";
        }

        public override bool ApplyChanges()
        {
            EnsureChildControls();

            MostViewedWebPart mvwp = this.WebPartToEdit as MostViewedWebPart;
            if (mvwp == null)
                return false;

            mvwp.Scope = (MostViewedWebPart.MostViewedScope)Enum.Parse(typeof(MostViewedWebPart.MostViewedScope), _ddlScope.SelectedValue);
            mvwp.ReturnCount = int.Parse(_ddlReturnCount.SelectedValue);
            mvwp.SpanDays = int.Parse(_ddlSpan.SelectedValue);
            mvwp.IsUserQuery = _cboxIsUserQuery.Checked;
            if (_tboxExtensions.Text.Trim() != string.Empty)
            {
                List<string> exts = new List<string>(_tboxExtensions.Text.Split(new char[1] { ',' }, StringSplitOptions.RemoveEmptyEntries));
                for (int i = 0; i < exts.Count; i++)
                {
                    exts[i] = exts[i].Trim();
                    if (string.IsNullOrEmpty(exts[i]))
                    {
                        exts.RemoveAt(i);
                        i--;
                    }
                }
                if (exts.Count > 0)
                    mvwp.Extensions = exts.ToArray();
                else
                    mvwp.Extensions = null;
            }
            else
                mvwp.Extensions = null;

            return true;
        }

        public override void SyncChanges()
        {
            EnsureChildControls();

            MostViewedWebPart mvwp = this.WebPartToEdit as MostViewedWebPart;
            if (mvwp == null)
                return;
            _tboxExtensions.Text = "";
            _ddlScope.SelectedValue = mvwp.Scope.ToString();
            _ddlReturnCount.SelectedValue = mvwp.ReturnCount.ToString();
            _ddlSpan.SelectedValue = mvwp.SpanDays.ToString();
            _cboxIsUserQuery.Checked = mvwp.IsUserQuery;
            if (mvwp.Extensions != null)
            {
                for (int i = 0; i < mvwp.Extensions.Length; i++)
                {
                    if (i != 0)
                        _tboxExtensions.Text += ", ";
                    _tboxExtensions.Text += mvwp.Extensions[i];
                }
            }
        }
    }
}