product.aspx.cs

网络营销软件的源代码

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.Data.SqlClient;
using System.Configuration;

namespace WebApplication8.company
{
	/// <summary>
	/// Summary description for product.
	/// </summary>
	public class product : System.Web.UI.Page
	{
		protected System.Web.UI.WebControls.DataGrid DataGrid1;
		protected System.Web.UI.WebControls.Button Button1;
		protected SqlConnection conn;
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			if(Session["type"] == null || !Session["type"].Equals("企业"))
				Response.Redirect("../login.aspx");

			conn = new SqlConnection(Application["market"].ToString());
			if(!Page.IsPostBack)
				Bind();
				// Put user code to initialize the page here
		}
		public void DataGrid1_delete(Object sender, DataGridCommandEventArgs e)
		{
			conn.Open();
			SqlCommand deleteCmd = new SqlCommand("delete from Product where productID = " + DataGrid1.DataKeys[(int)e.Item.ItemIndex],conn);
			deleteCmd.ExecuteNonQuery();
			deleteCmd.Connection.Close();
			Bind();
		}
		public void DataGrid1_edit(Object sender, DataGridCommandEventArgs E)
		{
			DataGrid1.EditItemIndex = (int)E.Item.ItemIndex;
			Bind();
		}

		public void DataGrid1_cancel(Object sender, DataGridCommandEventArgs E)
		{
			DataGrid1.EditItemIndex = -1;
			Bind();
		}
		public void DataGrid1_update(Object sender, DataGridCommandEventArgs E)
		{
			SqlCommand updateCmd = new SqlCommand("update Product set price=@price where productID=@ID",conn);
			updateCmd.Parameters.Add( new SqlParameter("@price",SqlDbType.VarChar,50));
			updateCmd.Parameters.Add( new SqlParameter("@ID",SqlDbType.Int,4));
			
			updateCmd.Parameters["@ID"].Value=DataGrid1.DataKeys[(int)E.Item.ItemIndex];
			
			String colvalue =((System.Web.UI.WebControls.TextBox)E.Item.Cells[3].Controls[0]).Text;
			if( colvalue != "" )
			{
				try
				{
					Convert.ToInt64(colvalue);
				}
				catch( FormatException e )
				{
					DataGrid1_cancel(sender,E);
					return;
				}
			}
			if( colvalue == "" ) 
			{
				DataGrid1_cancel(sender,E);
				return;
			}

			updateCmd.Parameters["@price"].Value = colvalue;
			
			updateCmd.Connection.Open();
			try
			{
				updateCmd.ExecuteNonQuery();
				DataGrid1.EditItemIndex = -1;
			}
			finally{ conn.Close();}

			Bind();

		}
		public void DataGrid1_change(Object sender, DataGridPageChangedEventArgs E)
		{
			DataGrid1.CurrentPageIndex = E.NewPageIndex;
		}
		private void Bind()
		{
			String name = Session["studentNO"].ToString();
			SqlDataAdapter myCommand = new SqlDataAdapter("select * from Product where studentNO = '" + name + "'",conn);
			DataSet ds = new DataSet();
			myCommand.Fill(ds, "Common");

			DataGrid1.DataSource=ds;
			DataGrid1.DataBind();
			conn.Close();
		}	

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN: This call is required by the ASP.NET Web Form Designer.
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{    
			this.DataGrid1.PageIndexChanged += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.DataGrid1_change);
			this.DataGrid1.CancelCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_cancel);
			this.DataGrid1.EditCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_edit);
			this.DataGrid1.UpdateCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_update);
			this.DataGrid1.DeleteCommand += new System.Web.UI.WebControls.DataGridCommandEventHandler(this.DataGrid1_delete);
			this.Button1.Click += new System.EventHandler(this.Button1_Click);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		private void Button1_Click(object sender, System.EventArgs e)
		{
			Response.Redirect("material.aspx");
		}
	}
}