StarterKit POLL

ProgressBar类

using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;

namespace ASPNET.StarterKit.Communities {
    /**//// <summary>
    /// Progress bar control is used for multiple purposes to 
    /// display the progress or status of a particular action
    /// for example, it can be used as bars in the voting control
    /// </summary>
    public class ProgressBar : WebControl, INamingContainer {

        // Member variables
        //
        int progress = 0;                // Percentage out of 100
        int percentOfProgress = 0;        // Percentage in 20ths

        // Constructor
        //
        public ProgressBar() {

            // Set up some defaults
            //
            this.BackColor = System.Drawing.Color.LightGray;
            this.ForeColor = System.Drawing.Color.Blue;
        }

        public override System.Drawing.Color BackColor {
            get {
                return base.BackColor;
            }
            set {
                base.BackColor = value;
            }
        }

        public override System.Drawing.Color ForeColor {
            get {
                return base.ForeColor;
            }
            set {
                base.ForeColor = value;
            }
        }

        // Set the percentage of progress
        //
        public int PercentageOfProgress {
            get {
                return progress;
            }
            set {

                // Ensure it falls in the correct bounds
                //
                if (value > 100)    // Greater than 100 is still 100
                    progress = 100;
                else if (value < 0)    // Less than 0 is stil 0
                    progress = 0;

                progress = value;

                if (0 != progress)
                    percentOfProgress = progress / 5;

            }
        }

        // Render the progress bar
        //
        protected override void Render(HtmlTextWriter output) {

            // We render a table
            //
            Table _table = new Table();
            TableRow row = new TableRow();

            _table.CellPadding = 0;
            _table.CellSpacing = 0;
            _table.BorderWidth = 0;
            _table.Width = 80;

            // Add a row
            //
            _table.Rows.Add(row);

            // Create 20 cells
            for (int i = 0; i < 20; i++ ) {
                TableCell td = new TableCell();
                td.Width = 5;
                td.Height = 16;

                // How should we fill this table?
                //
                if (i < percentOfProgress)
                    td.BackColor = this.ForeColor;
                else
                    td.BackColor = this.BackColor;

                // Add cell to row
                //
                row.Cells.Add(td);
            }

            this.Controls.Add(_table);
            _table.RenderControl(output);
        }
    }
}

POLL RESULT CLASS

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace ASPNET.StarterKit.Communities.Admin.EditVoting
{
    /**//// <summary>
    /// Summary description for PollResults.
    /// </summary>
    public class PollResults : System.Web.UI.Page
    {
        protected System.Web.UI.WebControls.Panel ResultsPanel;


        Web Form Designer generated code#region Web Form Designer generated code
        override protected void OnInit(EventArgs e)
        {
            //
            // CODEGEN: This call is required by the ASP.NET Web Form Designer.
            //
            InitializeComponent();
            base.OnInit(e);
        }
        
        /**//// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {    
            this.Load += new System.EventHandler(this.Page_Load);

        }
        #endregion


        System.Drawing.Color barBackColor = System.Drawing.Color.LightGray;
        System.Drawing.Color barForeColor = System.Drawing.Color.Blue;
        int totalVotes=0;
        
        //*******************************************************
        //
        // When page loads display the current results
        // for a voting poll.
        //
        //*******************************************************
        
        void Page_Load(Object s, EventArgs e) {
            if (Request["Poll_ID"]==null) {
                Response.Redirect("Default.aspx");
            }
            int Poll_ID = Int32.Parse(Request["Poll_ID"]);
            PollDetails polldetails = VotingUtility.GetPollForWebBox(Poll_ID);
            Table t = new Table();
            TableRow questionRow = new TableRow();
            TableRow resultsRow = new TableRow();
            TableRow footerRow = new TableRow();
            TableCell questionCell = new TableCell();
            TableCell resultsCell = new TableCell();
            TableCell footer = new TableCell();
        
            // Format the table
            //
            t.BorderWidth = 0;
        
            // Question
            //
            questionCell.Text = polldetails.Question;
            questionCell.Attributes.Add("style","font-weight:bold;");
            questionCell.ColumnSpan = 3;
        
            // Add the question cell/row to the table
            //
            questionRow.Cells.Add(questionCell);
            t.Rows.Add(questionRow);
        
    //        if (polldetails.DisplayResultsToPublic) {
                Hashtable pollresults = VotingUtility.GetPollResults(polldetails.Poll_ID);
        
                // Calculate the sum
                //
                int sum=0;
        
                foreach (int key in pollresults.Keys)
                    sum = sum + (int)pollresults[key];
        
                // Calculate percentage
                //
                foreach (int key in pollresults.Keys) {
                    // Internal variables/instances
                    //
                    double d = 0;
                    TableRow row = new TableRow();
                    TableCell progressCell = new TableCell();
                    TableCell percentageCell = new TableCell();
                    TableCell choiceCell = new TableCell();
                    ProgressBar bar = new ProgressBar();
        
                    // Percentage for this poll value
                    //
                    d = ((double)((int)pollresults[key]) / (double)sum) * 100;
        
                    // Display the choice in cell and format
                    //
                    choiceCell.Text = ((ChoiceInfo)polldetails.Choices[key]).Choice + ": ";
                    choiceCell.VerticalAlign = VerticalAlign.Top;
                    choiceCell.Wrap = false;
        
                    // Set properties for each bar
                    //
                    bar.PercentageOfProgress = (int)d;
                    bar.BackColor = barBackColor;
                    bar.ForeColor = barForeColor;
        
                    // Add the bar and set properties of the cell
                    //
                    progressCell.Controls.Add(bar);
                    progressCell.HorizontalAlign = HorizontalAlign.Right;
                    progressCell.VerticalAlign = VerticalAlign.Top;
                    progressCell.Width = 100;
        
                    // Special case 0
                    //
                    if ((double.IsNaN(d)) || (0 == d))
                        percentageCell.Text = "(0%)";
                    else
                        percentageCell.Text = "(" + d.ToString("##.#") + "%) (" + (int)pollresults[key] + " votes)";
        
                    // Format percentage cell
                    //
                    percentageCell.HorizontalAlign = HorizontalAlign.Left;
                    percentageCell.VerticalAlign = VerticalAlign.Top;
        
                    // Add the cells to the row
                    //
                    row.Cells.Add(choiceCell);
                    row.Cells.Add(progressCell);
                    row.Cells.Add(percentageCell);
        
                    // Add the row to the table
                    //
                    t.Rows.Add(row);
                    // Update total votes
                    totalVotes+=(int)pollresults[key];
    //            }
            }
        
            // Add results cell/row to table
            //
            resultsRow.Cells.Add(resultsCell);
            t.Rows.Add(resultsRow);
            // Display Total Votes
            TableRow totalRow = new TableRow();
            TableCell totalCell = new TableCell();
            totalCell.Text="Total Votes: " + totalVotes;
            totalRow.Cells.Add(totalCell);
            t.Rows.Add(totalRow);
        
            ResultsPanel.Controls.Add(t);
        }



    }
}