comment.aspx.cs

bolog

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Configuration;
using System.Data.OleDb;
namespace MyBlog
{
	/// <summary>
	/// comment 的摘要说明。
	/// </summary>
	public partial class comment : System.Web.UI.Page
	{
	
		protected void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
			if(!IsPostBack)
			{
				if((bool)Session["pwd"] == false)
					Response.Redirect("codeReq.aspx");
			
				String strValue = "select * from commentInfo where contextID = '"+Request["contextID"]+"'";
				String strConn = ConfigurationSettings.AppSettings["webblog"] + Server.MapPath("WebBlog.mdb");
				OleDbConnection cn = new OleDbConnection();
				cn.ConnectionString = strConn;

				OleDbDataAdapter myCommand = new OleDbDataAdapter(strValue, cn);
				DataSet ds = new DataSet();
				myCommand.Fill(ds, "commentInfo");

				commentDataGrid.DataSource = ds.Tables["commentInfo"].DefaultView;
				commentDataGrid.DataBind();
			}
		}

		#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.commentDataGrid.DeleteCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.commentDataGrid_DeleteCommand);

		}
		#endregion

		private void commentDataGrid_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)
		{
			try
			{
				String deleteCmd = "delete from commentInfo where commentID = @commentID";
				String strConn = ConfigurationSettings.AppSettings["webblog"] + Server.MapPath("WebBlog.mdb");
				OleDbConnection cn = new OleDbConnection();
				cn.ConnectionString = strConn;
				OleDbCommand myCommand = new OleDbCommand(deleteCmd, cn);
				myCommand.Parameters.Add(new OleDbParameter("@commentID", OleDbType.VarChar, 38));
				myCommand.Parameters["@commentID"].Value =commentDataGrid.DataKeys[e.Item.ItemIndex].ToString();
				cn.Open();
				myCommand.Parameters.Clear();
				myCommand.CommandText = "update contextInfo set viewCount = viewCount - 1 where contextID = '{"+Request["contextID"]+"}'";
				myCommand.ExecuteNonQuery();
				try
				{
					myCommand.ExecuteNonQuery();
					Message.Text = "删除成功";
				}
				catch(System.Data.OleDb.OleDbException)
				{
					Message.Text ="出错了";
				}
				cn.Close();

			}
			catch(System.Data.OleDb.OleDbException)
			{
				Message.Text ="出错了";
			}

			String strValue1 = "select * from commentInfo where contextID = '"+Request["contextID"]+"'";
			String strConn1 = ConfigurationSettings.AppSettings["webblog"] + Server.MapPath("WebBlog.mdb");
			OleDbConnection cn1 = new OleDbConnection();
			cn1.ConnectionString = strConn1;

			OleDbDataAdapter myCommand1 = new OleDbDataAdapter(strValue1, cn1);
			DataSet ds = new DataSet();
			myCommand1.Fill(ds, "commentInfo");

			commentDataGrid.DataSource = ds.Tables["commentInfo"].DefaultView;
			commentDataGrid.DataBind();
		}
	}
}