项目中常用类

1.分页数据模型：PagedDataModel.cs

用处：将分页的数据，封装到类中

public class PagedDataModel<T>
{
    /// <summary>
    /// 总页数
    /// </summary>
    public int PageCount;
    /// <summary>
    /// 总行数
    /// </summary>
    public int RowCount;
    /// <summary>
    /// 当前页码
    /// </summary>
    public int PageIndex;
    /// <summary>
    /// 当前页码数据
    /// </summary>
    public IList<T> PagedList;
}

2.数据帮助类：DataHelper.cs

用处：对数据进行处理，以一定格式返回

public static class DataHelper
{
    /// <summary>
    /// js序列化器
    /// </summary>
    static  JavaScriptSerializer jss=new JavaScriptSerializer();
    /// <summary>
    /// 将对象转换为json数组格式字符串 
    /// </summary>
    /// <param name="obj"></param>
    /// <returns></returns>
    public static string ObjToJson(object obj)
    {
        return jss.Serialize(obj);
    }
    /// <summary>
    /// 返回MD5加密字符串
    /// </summary>
    /// <param name="str"></param>
    /// <returns></returns>
    public static string MD5(string str)
    {
        return System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(str, FormsAuthPasswordFormat.MD5.ToString());
    }
}

3.页面帮助类：PageHelper.cs

用处：向前台展示js信息时

public class PageHelper
{
    /// <summary>
    /// 读取指定路径的文件，并返回字符串格式 
    /// </summary>
    /// <param name="strPath">文件路径-物理路径 </param>
    /// <returns></returns>
    public static string ReadFile(string strPath)
    {
        return File.ReadAllText(strPath);
    }
    /// <summary>
    /// 获取提示和跳转js代码字符串
    /// </summary>
    /// <param name="strMsg"></param>
    /// <param name="strBackUrl"></param>
    public static void WriteJSMsg(string strMsg, string strBackUrl)
    {
        string strBack = "<script>alert(" + strMsg + ");window.location='" + strBackUrl + "';</script>";
        HttpContext.Current.Response.Write(strBack);
    }
    /// <summary>
    /// 跳转js代码字符串
    /// </summary>
    /// <param name="strMsg"></param>
    public static void WriteJSMsg(string strMsg)
    {
        string strBack = "<script>alert(" + strMsg + ");</script>";
        HttpContext.Current.Response.Write(strBack);
    }
}

4.验证帮助类：ValidateHelper.cs

用处：对数据进行验证

public class ValidateHelper
{
    static Regex regIsNum=new Regex("^[0-9]+$");
    /// <summary>
    /// 验证 参数是否为整型数值
    /// </summary>
    /// <param name="strNum"></param>
    /// <returns></returns>
    public static bool IsNum(string strNum)
    {
        return regIsNum.IsMatch(strNum);
    }
}

5.异步消息处理类AjaxMsgHelper.cs

用处：将需要返回的信息，以一定的内容形式返回

public static class AjaxMsgHelper
{
    /// <summary>
    /// 以json的格式返回消息
    /// </summary>
    /// <param name="statu">状态码</param>
    /// <param name="msg">状态信息</param>
    /// <param name="data">返回数据</param>
    /// <param name="nextUrl">跳转url</param>
    public static void AjaxMsg(string statu, string msg,string data,string nextUrl)
    {
        //{"statu":"err","msg":"出错啦","data":[{},{}],"nextUrl":"Login.aspx"}
        string strMsg = "{"statu":""+statu+"","msg":""+msg+"","data":"+(data==null?"null":data)+","nextUrl":""+nextUrl+""}";
        HttpContext.Current.Response.Write(strMsg);
    }
    public static void AjaxMsg(string statu, string msg, string data)
    {
        AjaxMsg(statu,msg,data,"null");
    }

    public static void AjaxMsg(string statu, string msg)
    {
        AjaxMsg(statu,msg,null,null);
    }
}

6.Json数据实体

用处：将需要返回的数据进行集中，并封装

/// <summary>
/// Json 数据实体
/// </summary>
public class JsonModel
{
    public object Data { get; set; }
    public string Msg { get; set; }
    public string Statu { get; set; }
    public string BackUrl { get; set; }
}