公共函数

    /// <summary>
    /// 检查时间是否在指定时间段内(只计算日期部分)
    /// </summary>
    /// <param name="startTime">起始时间,字符串形式,格式yyyy-MM-dd HH:mm:ss</param>
    /// <param name="endTime">结束时间,同上</param>
    /// <param name="selectTime">指定的时间,同上</param>
    /// <returns></returns>
    public static bool CheckTime(string startTime, string endTime, string selectTime)
    {
        DateTime startDT = Convert.ToDateTime(startTime).Date;
        DateTime endDT = Convert.ToDateTime(endTime).Date;
        DateTime selectDT = Convert.ToDateTime(selectTime).Date;
        if ((selectDT.CompareTo(startDT) == 0 || selectDT.CompareTo(startDT) == 1)
            && (selectDT.CompareTo(endDT) == -1 || selectDT.CompareTo(endDT) == 0))
        {
            return true;
        }
        else
        {
            return false;
        }
    }

/// <summary>
    /// 比较数组中是否有相同数据,输出相同值
    /// </summary>
    /// <param name="strArray">字符串数组,也可换成整形</param>
    /// <returns></returns>
    public string CheckSameData(string[] strArray)
    {
        string strSame = string.Empty;
        int length = strArray.Length;
        for (int i = 0; i < length; i++)
        {
            string userid = strArray[i].ToString();
            for (int j = i + 1; j < length; j++)
            {
                //防止出现相同ID
                if (userid == strArray[j])
                {
                    strSame = strArray[j];
                }
            }
        }
        return strSame;
    }

/// <summary>
    /// 用户搜索
    /// </summary>
    /// <param name="userid">搜索的用户ID</param>
    /// <param name="depid">搜索的部门ID</param>
    /// <returns></returns>
    public DataSet SearchUser(string searchUserId, string searchDepId)
    {
        ds = new DataSet();
        DataTable dt = new DataTable("userlist");
        dt.Columns.Add("userid", System.Type.GetType("System.String"));

        bool b;
        XmlNodeList nodes = xmldoc.SelectNodes("//user");
        foreach (XmlNode xn in nodes)
        {
            b = false;//每次循环前初始化
            string nodeDepId = xn.SelectSingleNode("depid").InnerText;
            string nodeUserId = xn.SelectSingleNode("userid").InnerText;
            string nodeUserName = xn.SelectSingleNode("UserName").InnerText;
            //条件都为空
            if (string.IsNullOrEmpty(searchDepId) && string.IsNullOrEmpty(searchUserId))
            {
                b = true;
            }
            else
            {
                //条件都不为空
                if (!string.IsNullOrEmpty(searchDepId) && !string.IsNullOrEmpty(searchUserId))
                {
                    if (nodeDepId == searchDepId)
                    {
                        if (nodeUserId == searchUserId)
                        {
                            b = true;
                        }
                    }
                }
                else
                {
                    //部门不为空
                    if (!string.IsNullOrEmpty(searchDepId))
                    {
                        if (nodeDepId == searchDepId)
                        {
                            b = true;
                        }
                    }

                    //用户不为空
                    if (!string.IsNullOrEmpty(searchUserId))
                    {
                        if (nodeUserId == searchUserId)
                        {
                            b = true;
                        }
                    }
                }
            }

            //可以添加到表
            if (b)
            {
                //过滤掉管理员
                if (xn.SelectSingleNode("level").InnerText != "admin")
                {
                    DataRow dr = dt.NewRow();
                    dr["userid"] = xn.SelectSingleNode("userid").InnerText;
                    dt.Rows.Add(dr);
                }
            }
        }
        ds.Tables.Add(dt);
        return ds;
    }

/// <summary>
        /// 全角转半角(DBC case)
        /// </summary>
        /// <param name="input">任意字符串</param>
        /// <returns>半角字符串</returns>
        private String ToDBC(String input)
        {
            char[] c = input.ToCharArray();
            for (int i = 0; i < c.Length; i++)
            {
                if (c[i] == 12288)
                {
                    c[i] = (char)32;
                    continue;
                }
                if (c[i] > 65280 && c[i] < 65375)
                    c[i] = (char)(c[i] - 65248);
            }
            return new String(c);
        }

/// <summary>
/// 全角转半角(DBC case)
/// </summary>
/// <param name="input">任意字符串</param>
/// <returns>半角字符串</returns>
public static String ToDBC(String input)
{
    char[] c = input.ToCharArray();
    for (int i = 0; i < c.Length; i++)
    {
        if (c[i] == 12288)
        {
            c[i] = (char)32;
            continue;
        }
        if (c[i] > 65280 && c[i] < 65375)
            c[i] = (char)(c[i] - 65248);
    }
    return new String(c);
}