当前位置: 代码迷 >> ASP.NET >> SqlDataReader有关问题请大侠们帮忙指点迷津,不胜感激
  详细解决方案

SqlDataReader有关问题请大侠们帮忙指点迷津,不胜感激

热度:9554   发布时间:2013-02-25 00:00:00.0
SqlDataReader问题请大侠们帮忙指点迷津,不胜感激!
这段代码执行后老是提示,SqlDataReader dr = Com.ExecuteReader();附近有语法错误。可我对这个不是太明白,刚刚学.NET
这个代码是ASP.NET程序开发范例宝典(C#)上的源代码
我只改了部分数据库连接的部分,请大侠们帮忙指点迷津,不胜感激!
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)
  {
  string cmdtxt1 = "server=(local);database=db_13;Uid=sa;Pwd=hzdprm123!@#";
  SqlConnection Con = new SqlConnection(cmdtxt1);
  Con.Open();
  SqlCommand Com = new SqlCommand("select * from tb_06 where ID=" + Request["ID"] + "", Con);
  SqlDataReader dr = Com.ExecuteReader();
  dr.Read();
  string strContent = null;
  if (dr.HasRows)
  {
  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 = "<body style=text-align:center><table width=60% border=1 cellpadding=0 cellspacing=0 text-align:center>\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 style=font-size:9pt;text-align:center>" + strItemName + "</td><td width=50 style=font-size:9pt;color=red;text-align:center>" + decItemNum.ToString() + "票</td><td style=font-size:9pt><img src=Images/bar1.gif height=10 width=" + strPercent + "%>" + strPercent + "%</td></tr>\n";
  }
  strBody += "</table></body>";
  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>
  相关解决方案