defaultcs.aspx.cs

Telerik是很大的第三方软件制造商

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 Telerik.QuickStart;
using Telerik.WebControls;

namespace Telerik.CallbackExamplesCSharp.Demos.Accounts
{
	/// <summary>
	/// Summary description for _Default.
	/// </summary>
	public class DefaultCS: XhtmlPage
	{
		protected System.Web.UI.WebControls.Label StatusLabel;
		protected System.Web.UI.WebControls.TextBox txtBoxName;
		protected System.Web.UI.WebControls.TextBox txtBoxPassword;
		protected System.Web.UI.WebControls.Label Label2;
		protected System.Web.UI.WebControls.Label Label1;
		protected System.Web.UI.WebControls.Label Label3;
		protected Telerik.WebControls.CallbackButton btnDelete;
		protected Telerik.WebControls.CallbackButton btnRegister;
		protected Telerik.WebControls.CallbackButton btnCheckAccount;
		protected Telerik.WebControls.CallbackTextBox CallbackTextBox1;
		protected System.Web.UI.WebControls.Label lblResult;
		protected System.Web.UI.WebControls.Label Label4;
		protected System.Web.UI.WebControls.Label label11;
		protected System.Web.UI.WebControls.Label Label5;
		protected Telerik.WebControls.LoadingPanel LoadingPanel1;
		protected Telerik.WebControls.CallbackPanel CallbackPanel1;
		protected System.Web.UI.HtmlControls.HtmlImage Img1;
		protected System.Web.UI.WebControls.DataGrid DataGrid1;

		enum AccountStatus 
		{
			AccountExists,			
			NameExists,
			NotExist
		}

		private DateTime GetRandomDate(Random r)
		{		
			DateTime dt = new DateTime(2005, r.Next(1, 5), r.Next(1, 28), r.Next(0, 23), r.Next(0, 59), r.Next(0, 59));
			return dt;
		}

		private void Page_Load(object sender, System.EventArgs e)
		{
			if (!Page.IsPostBack)
			{
				dataTable = new DataTable();

				dataTable.Columns.Add("Name", typeof(string));
				dataTable.Columns.Add("Password", typeof(string));
				dataTable.Columns.Add("Date", typeof(DateTime));
				
				Random r = new Random();
 
				dataTable.Rows.Add(new object[] {"JamesS",		"pass1", GetRandomDate(r) } );
				dataTable.Rows.Add(new object[] {"JohnsonT",	"pass2", GetRandomDate(r) } );
				dataTable.Rows.Add(new object[] {"Robert",		"pass3", GetRandomDate(r) } );
				dataTable.Rows.Add(new object[] {"Michael78",	"pass4", GetRandomDate(r) } );
				dataTable.Rows.Add(new object[] {"Will123",		"pass5", GetRandomDate(r) } );
				dataTable.Rows.Add(new object[] {"Richard",		"pass6", GetRandomDate(r) } );

				DataGrid1.DataSource = dataTable;
				DataGrid1.DataBind();				
			}

		}

		#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.btnRegister.Click += new System.EventHandler(this.btnRegister_Click);
			this.btnCheckAccount.Click += new System.EventHandler(this.btnCheckAccount_Click);
			this.btnDelete.Click += new System.EventHandler(this.CallbackButton4_Click);
			this.CallbackTextBox1.TextChanged += new System.EventHandler(this.CallbackTextBox1_TextChanged);
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion

		
		private void btnRegister_Click(object sender, System.EventArgs e)
		{
			if ((txtBoxName.Text == null) || (txtBoxName.Text.Length < 3))
			{
				StatusLabel.Text = "User name should be at least 3 characters.";
				return;
			}
			else
				if ((txtBoxPassword.Text == null) || (txtBoxPassword.Text.Length < 4))
			{
				StatusLabel.Text = "Password should be at least 4 characters.";
				return;
			}
			else
			{							
				AccountStatus status = CheckAccount(txtBoxName.Text, txtBoxPassword.Text);
				if (AccountStatus.NotExist == status)
				{
					AddAcount(txtBoxName.Text, txtBoxPassword.Text);
					BindGrid();
					txtBoxName.Text		= string.Empty;
					txtBoxPassword.Text = string.Empty;
					btnRegister.ResponseScript += string.Format("document.getElementById('{0}').value = '';", txtBoxPassword.ClientID);
					btnRegister.ResponseScript += string.Format("document.getElementById('{0}').value = '';", txtBoxName.ClientID);
					StatusLabel.Text = "Account successfully registered.";
				}
				else
				{					
					StatusLabel.Text = "The name is already in use, please choose another username.";
				}
			}		
		}

		private void btnCheckAccount_Click(object sender, System.EventArgs e)
		{
			AccountStatus status = CheckAccount(txtBoxName.Text, txtBoxPassword.Text);
			if (AccountStatus.AccountExists == status)
			{
				StatusLabel.Text = "You have successfully logged in.";
				txtBoxName.Text		= string.Empty;
				txtBoxPassword.Text = string.Empty;
				btnCheckAccount.ResponseScript += string.Format("document.getElementById('{0}').value = '';", txtBoxPassword.ClientID);
				btnCheckAccount.ResponseScript += string.Format("document.getElementById('{0}').value = '';", txtBoxName.ClientID);		
			}
			else
			{
				StatusLabel.Text = "Wrong user name or password.";
			}
			
		}

		private void CallbackButton4_Click(object sender, System.EventArgs e)
		{							
			ArrayList removeIndexes = new ArrayList();
			foreach (DataGridItem item in DataGrid1.Items)
			{
				CheckBox checkBox = (CheckBox) item.FindControl("CheckBox1");
				if (checkBox != null)
				{
					if (checkBox.Checked)
					{
						removeIndexes.Add(item.ItemIndex);
					}
				}
			}			
			for (int i = removeIndexes.Count - 1; i >= 0; i--)
			{
				dataTable.Rows.Remove(dataTable.Rows[(int) removeIndexes[i]]);
			}
			BindGrid();
		}
		
		private DataTable dataTable
		{
			get
			{
				return (DataTable) ViewState["table"];
			}
			set
			{
				ViewState["table"] = value;
			}
		}

		private void AddAcount(string userName, string userPassword)
		{			
			dataTable.Rows.Add(new object[] { userName, userPassword, DateTime.Now } );			
		}

		
		private AccountStatus CheckAccount(string userName, string userPassword)
		{
			DataTable table = dataTable;
			AccountStatus status = AccountStatus.NotExist;
			foreach (DataRow row in table.Rows)
			{
				string tableName	 = (string) row[0];
				string tablePassword = (string) row[1];

				if (userName.Equals(tableName))
				{		
					if (userPassword.Equals(tablePassword))
					{
						status = AccountStatus.AccountExists;
					}
					else
					{
						status = AccountStatus.NameExists;
					}
					break;
				}				
			}
			return status;
		}		

		private void BindGrid()
		{
			DataGrid1.DataSource = dataTable;
			DataGrid1.DataBind();
		}		

		private void CallbackTextBox1_TextChanged(object sender, System.EventArgs e)
		{
			try
			{
				int charCount = int.Parse(CallbackTextBox1.Text);
			
				if ((charCount >= 6) && (charCount <= 15))
				{
					Random r = new Random();
					string s = "0123456789abcdefjhijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";				

					string res = string.Empty;
					for (int i = 0; i < charCount; i++)
					{
						res += s[r.Next(0, s.Length)];
					};

					lblResult.Text = res;
					lblResult.ForeColor = Color.Black;				
				}
				else
				{
					lblResult.Text = "Range between 6 - 15";
					lblResult.ForeColor = Color.Red;
				}
			}
			catch
			{
				lblResult.Text = "Invalid number";
				lblResult.ForeColor = Color.Red;
			}					
		}
	}
}