result.aspx.cs

为达到最佳效果

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class Result : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
		SqlData da = new SqlData();
        SqlDataReader dr = da.ExceRead("select * from tb_Vote where ID="+Request["ID"]+"");
        dr.Read();
        string strContent = dr["Content"].ToString();
        dr.Close();
        decimal decNumAll = GetNumAll(strContent);//得到所有票数，C#在除法运算中需用decimal类型，否则将会把小数点后的数去掉
        Response.Write(GetResult(strContent, decNumAll));
    }

	/// <summary>
	/// 显示图象
	/// </summary>
	/// <param name="strContent">相关主题下的内容</param>
	/// <param name="decNumAll">所有的票数</param>
	/// <returns></returns>
    public string GetResult(string strContent, decimal decNumAll)
    {
        string[] arrContent = strContent.Split('|');
        string strBody = "<table width=100% border=1>\n";
        foreach (string strContentIN in arrContent)
        {
            string strItemName = strContentIN.Split(',')[1].ToString();//得到选项名称
            decimal decItemNum = Convert.ToDecimal(strContentIN.Split(',')[0]);//得到选项的投票数
            decimal decPercent = GetPercent(decItemNum, decNumAll) * 100;//得到百分比				
            string strPercent = decPercent.ToString();//将百分比转为字符型
            if (strPercent.Length > 5)//如果百分比结果长度超过5位
            {
                strPercent = strPercent.Substring(0, 5);//将百分比的余数截短为“00.00”
            }
            strBody += "<tr><td width=100>" + strItemName + "</td><td width=50>" + decItemNum.ToString() + "票</td><td><img src=Images/bar1.gif height=10 width=" + strPercent + "%>" + strPercent + "%</td></tr>\n";
        }
        strBody += "</table>";
        return strBody;
    }
 

	/// <summary>
	/// 票数求和
	/// </summary>
	/// <param name="strNum">当前所要操作的字串</param>
	/// <returns></returns>
    public decimal GetNumAll(string strNum)
    {
        decimal decNumAll = 0;
        string[] arrNum = strNum.Split('|');
        foreach (string strNumIN in arrNum)
        {
            decNumAll += Convert.ToInt32(strNumIN.Split(',')[0].ToString());//截取第零位
        }
        return decNumAll;
    }
 
	/// <summary>
	/// 百分比
	/// </summary>
	/// <param name="decItem">当前选项本身的票数</param>
	/// <param name="decNumAll">所有的票数</param>
	/// <returns></returns>
    public decimal GetPercent(decimal decItem, decimal decNumAll)
    {
        if (decNumAll == 0)//如果总票数是零
        {
            decNumAll++;//加一，避免除0出错
        }
        decimal decPercent = decItem / decNumAll;
        return decPercent;
    }
}