DTcms.Common/DTRequest.cs

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using System;
using System.Text;
using System.Web;

namespace DTcms.Common
{
	/// <summary>
	/// Request操作类
	/// </summary>
	public class DTRequest
	{
		/// <summary>
		/// 判断当前页面是否接收到了Post请求
		/// </summary>
		/// <returns>是否接收到了Post请求</returns>
		public static bool IsPost()
		{
			return HttpContext.Current.Request.HttpMethod.Equals("POST");
		}

		/// <summary>
		/// 判断当前页面是否接收到了Get请求
		/// </summary>
		/// <returns>是否接收到了Get请求</returns>
		public static bool IsGet()
		{
			return HttpContext.Current.Request.HttpMethod.Equals("GET");
		}

		/// <summary>
		/// 返回指定的服务器变量信息
		/// </summary>
		/// <param name="strName">服务器变量名</param>
		/// <returns>服务器变量信息</returns>
		public static string GetServerString(string strName)
		{
			if (HttpContext.Current.Request.ServerVariables[strName] == null)
				return "";

            return HttpContext.Current.Request.ServerVariables[strName].ToString();
		}

		/// <summary>
		/// 返回上一个页面的地址
		/// </summary>
		/// <returns>上一个页面的地址</returns>
		public static string GetUrlReferrer()
		{
			string retVal = null;
    
			try
			{
				retVal = HttpContext.Current.Request.UrlReferrer.ToString();
			}
			catch{}
			
			if (retVal == null)
				return "";
    
			return retVal;