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;
using System.Configuration;

namespace cms
{
	/// <summary>
	/// users 的摘要說明。
	/// </summary>
	public class users : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.Button Btn_exit;
		protected System.Web.UI.WebControls.DataGrid Dgd_user;
		protected System.Web.UI.WebControls.Label Lbl_note;
	    SqlConnection cn;
		private void Page_Load(object sender, System.EventArgs e)
		{	//判斷用戶是否為合法用戶
			try
			{
				if(Session["User_power"].ToString ()=="0") ;
				else Response.End ();
			}
			catch
			{
				Response.Write ("您不是合法用戶，請登入后再操作，<a href='default.aspx'>返回</a>");
				Response.End ();
			}
			// 在此處放置用戶代碼以初始化頁面
			string strconn= ConfigurationSettings.AppSettings["dsn"];
			cn=new SqlConnection(strconn);
			if(!IsPostBack)		BindGrid();
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN：該調用是 ASP.NET Web 窗體設計器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 設計器支持所需的方法 - 不要使用代碼編輯器修改
		/// 此方法的內容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.Btn_exit.Click += new System.EventHandler(this.Btn_exit_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Btn_exit_Click(object sender, System.EventArgs e)
		{
			Response.Redirect("default.aspx");
		}
		public void DataGrid_page(object sender,DataGridPageChangedEventArgs e)
		{
			Dgd_user.CurrentPageIndex=e.NewPageIndex;
			BindGrid();
		}
		public void BindGrid()
		{
			SqlDataAdapter da=new SqlDataAdapter("select * from users",cn);
			DataSet ds=new DataSet();
			da.Fill(ds);
			Dgd_user.DataSource=ds;
			Dgd_user.DataBind();
		}
		public void DataGrid_cancel(object sender,DataGridCommandEventArgs e)
		{
			
			Dgd_user.EditItemIndex=-1;
			BindGrid();
			
		}
		public void DataGrid_edit(object sender,DataGridCommandEventArgs e)
		{
			
			Dgd_user.EditItemIndex=(int)e.Item.ItemIndex;
		
			BindGrid();
			
		}
		public void DataGrid_update(object sender,DataGridCommandEventArgs e)
		{
			SqlCommand cm=new SqlCommand("update_users_1",cn);
			cm.CommandType=CommandType.StoredProcedure;
			cm.Parameters.Add(new SqlParameter("@User_id",SqlDbType.Char,10));		
			cm.Parameters.Add(new SqlParameter("@User_name",SqlDbType.VarChar,50));
			cm.Parameters.Add(new SqlParameter("@User_power",SqlDbType.Int,4));
			string colvalue=((TextBox)e.Item.Cells[2].Controls[0]).Text;
			cm.Parameters["@User_name"].Value=colvalue;			
			colvalue=((TextBox)e.Item.Cells[3].Controls[0]).Text;
			cm.Parameters["@User_power"].Value=colvalue;
			cm.Parameters["@User_id"].Value=Dgd_user.DataKeys[(int)e.Item.ItemIndex];
			cm.Connection.Open();
			try
			{
				cm.ExecuteNonQuery();
				Lbl_note.Text="編輯成功";
				Dgd_user.EditItemIndex=-1;
			}
			catch(SqlException)
			{
				Lbl_note.Text="編輯失敗";
				Lbl_note.Style["color"]="red";
			}
			cm.Connection.Close();		
			BindGrid();
			
		}
		
		public void DataGrid_delete(object sender,DataGridCommandEventArgs e)
		{
			
			string strsql="delete from users where User_id=@userid";
			SqlCommand cm=new SqlCommand(strsql,cn);
			cm.Parameters.Add(new SqlParameter("@userid",SqlDbType.Char,10));
			cm.Parameters["@userid"].Value=Dgd_user.DataKeys[(int)e.Item.ItemIndex];
			cm.Connection.Open();
			try
			{
				cm.ExecuteNonQuery();
				Lbl_note.Text="刪除成功";
				
			}
			catch(SqlException)
			{
				Lbl_note.Text="刪除失敗";
				Lbl_note.Style["color"]="red";
			}
			cm.Connection.Close();			
			BindGrid();
		}

	}
}