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>
	/// customer 的摘要說明。
	/// </summary>
	public class customer : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.DataGrid Dgd_customer;
		protected System.Web.UI.WebControls.Button Btn_back;
		protected System.Web.UI.WebControls.LinkButton Lbtn_add;
		protected System.Web.UI.WebControls.Label Lbl_note;	
	    SqlConnection cn;
		private void Page_Load(object sender, System.EventArgs e)
		{	// 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.Lbtn_add.Click += new System.EventHandler(this.Lbtn_add_Click);
			this.Btn_back.Click += new System.EventHandler(this.Btn_back_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion
	
		public void BindGrid()
		{	string mysql="select Custom_id,Custom_name,Custom_charge,Custom_level from customer";
			SqlDataAdapter da=new SqlDataAdapter(mysql,cn);
			DataSet ds=new DataSet();
			da.Fill(ds);
			Dgd_customer.DataSource=ds;
			Dgd_customer.DataBind();
		}
		public void DataGrid_Page(object sender,DataGridPageChangedEventArgs e)
		{
			Dgd_customer.CurrentPageIndex=e.NewPageIndex;
			BindGrid();
		}

		private void Btn_back_Click(object sender, System.EventArgs e)
		{
			Response.Redirect("default.aspx");
		}
		public void DataGrid_cancel(object sender,DataGridCommandEventArgs e)
		{
			
			Dgd_customer.EditItemIndex=-1;
			BindGrid();
			
		}
		
		public void DataGrid_edit(object sender,DataGridCommandEventArgs e)
		{
			if(Session["User_power"].ToString()=="0")
			{
			
				Dgd_customer.EditItemIndex=(int)e.Item.ItemIndex;		
				BindGrid();
			}	
		}
		public void DataGrid_update(object sender,DataGridCommandEventArgs e)
		{
				string strsql="update customer set Custom_name=@Custom_name,Custom_charge=@Custom_charge,Custom_level=@Custom_level where Custom_id=@Custom_id";
			SqlCommand cm=new SqlCommand(strsql,cn);
			try
			{
			cm.Parameters.Add(new SqlParameter("@Custom_id",SqlDbType.Char,10));
			cm.Parameters.Add(new SqlParameter("@Custom_name",SqlDbType.Char,10));
			cm.Parameters.Add(new SqlParameter("@Custom_charge",SqlDbType.Char,10));
           	cm.Parameters.Add(new SqlParameter("@Custom_level",SqlDbType.Int,4));
			string colvalue=((TextBox)e.Item.Cells[1].Controls[0]).Text;
			cm.Parameters["@Custom_name"].Value=colvalue;
			colvalue=((TextBox)e.Item.Cells[2].Controls[0]).Text;
			cm.Parameters["@Custom_charge"].Value=colvalue;
			colvalue=((TextBox)e.Item.Cells[3].Controls[0]).Text;
			cm.Parameters["@Custom_level"].Value=colvalue;
			cm.Parameters["@Custom_id"].Value=Dgd_customer.DataKeys[(int)e.Item.ItemIndex];
			cm.Connection.Open();			
				cm.ExecuteNonQuery();
				Lbl_note.Text="編輯成功";
				Dgd_customer.EditItemIndex=-1;
			}
			catch
	       {
				Lbl_note.Text="編輯失敗";
				Lbl_note.Style["color"]="red";
			}
			cm.Connection.Close();		
			BindGrid();			
		}
		
		public void DataGrid_delete(object sender,DataGridCommandEventArgs e)
		{
			if(Session["User_power"].ToString()=="0")
			{
				string strsql="delete from customer where Custom_id=@customid";
				SqlCommand cm=new SqlCommand(strsql,cn);
				cm.Parameters.Add(new SqlParameter("@customid",SqlDbType.Char,10));
				cm.Parameters["@customid"].Value=Dgd_customer.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();
			}
		}

		private void Lbtn_add_Click(object sender, System.EventArgs e)
		{
		
			try
			{
				if(Session["User_power"].ToString ()=="0"||Session["User_power"].ToString ()=="3")
				Response.Redirect("addcustomer.aspx");
			}
			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 ();
			}
		}
	}
}