edit_ans.aspx.cs

1。使用ASP.NET+C# VS.NET 2003制作

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace doughty_BBS
{
	/// <summary>
	/// edit_Ans 的摘要说明。
	/// </summary>
	public class edit_Ans : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.TextBox TB_Content;
		protected System.Web.UI.WebControls.Button Button1;
		protected System.Web.UI.WebControls.Button Button2;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
			if (!this.IsPostBack)
				try
				{
					if ((Request.QueryString["QID"]!=null)&(Request.QueryString["AID"]!=null))
					{
						string s=Request.QueryString["AID"].ToString();
						DataRow drs;
						drs=DBOperate.GetDataRow("SELECT Ans_ID, Question_ID, Ans_Man, Ans_Content, Ans_Time, Ans_IPAddress FROM Answers WHERE (Ans_ID ="+s+")","Answers","DBConnection");
						if ((User.Identity.Name.ToString()==drs["Ans_Man"].ToString()))
						{
							TB_Content.Text=drs["Ans_Content"].ToString();
						}
						else
						{
							if (Session["UserGrade"]==null)
								Session["UserGrade"]=DBOperateSite.GetUserGrade(User.Identity.Name);
							if (Session["UserGrade"].ToString()=="管理员")
								TB_Content.Text=drs["Ans_Content"].ToString();
							else
								Response.Redirect("Edit_Error.aspx?QID="+Request.QueryString["QID"].ToString());
						}
					}
					else
						throw new System.Exception();
				}
				catch
				{
					this.Response.Redirect("Edit_Error.aspx?QID="+Request.QueryString["QID"].ToString());
				}
		}

		#region Web 窗体设计器生成的代码
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.Button2.Click += new System.EventHandler(this.Button2_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion
		private void Redirect()
		{
			this.Response.Redirect("Browers.aspx?QID="+Request.QueryString["QID"].ToString());
		}

		private void Button1_Click(object sender, System.EventArgs e)
		{
			//提交修改结果
			SqlConnection sqlConnection=new SqlConnection(System.Configuration.ConfigurationSettings.AppSettings["DBConnection"]);
			try
			{
				string s="UPDATE Answers SET Ans_Content =@Ans_Content, Ans_IPAddress ='"+this.Request.UserHostAddress.ToString()+"' WHERE (Ans_ID = "+Request.QueryString["AID"].ToString()+")";
				SqlCommand sqlCmd =new SqlCommand(s,sqlConnection);
				sqlCmd.Parameters.Add("@Ans_Content", System.Data.SqlDbType.Text);
				sqlCmd.Parameters["@Ans_Content"].Value=TB_Content.Text;
				sqlConnection.Open();
				sqlCmd.ExecuteNonQuery();
			}
			catch (Exception ex)
			{
				throw (ex);
			}
			finally
			{
				sqlConnection.Close();
				Redirect();
			}
		}

		private void Button2_Click(object sender, System.EventArgs e)
		{
			Redirect();
		}
	}
}