backup.cs

此为本人和同学所开发的酒店管理系统.C#.net.也是软件工程课程的作业.

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data ;
using System.Data .SqlClient ;

namespace RoomManage
{
	/// <summary>
	/// backup 的摘要说明。
	/// </summary>
	public class backup : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Button button2;
		private System.Windows.Forms.Button button3;
		private System.Windows.Forms.TextBox tb;
		private System.Windows.Forms.FolderBrowserDialog fbd;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public backup()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗体设计器生成的代码
		/// <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.button1 = new System.Windows.Forms.Button();
			this.label1 = new System.Windows.Forms.Label();
			this.tb = new System.Windows.Forms.TextBox();
			this.button2 = new System.Windows.Forms.Button();
			this.button3 = new System.Windows.Forms.Button();
			this.fbd = new System.Windows.Forms.FolderBrowserDialog();
			this.SuspendLayout();
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(232, 16);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(56, 23);
			this.button1.TabIndex = 0;
			this.button1.Text = "浏览";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(8, 16);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(56, 23);
			this.label1.TabIndex = 1;
			this.label1.Text = "备份到：";
			this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
			// 
			// tb
			// 
			this.tb.Location = new System.Drawing.Point(56, 16);
			this.tb.Name = "tb";
			this.tb.Size = new System.Drawing.Size(168, 21);
			this.tb.TabIndex = 2;
			this.tb.Text = "";
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(40, 80);
			this.button2.Name = "button2";
			this.button2.TabIndex = 0;
			this.button2.Text = "确定";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// button3
			// 
			this.button3.Location = new System.Drawing.Point(160, 80);
			this.button3.Name = "button3";
			this.button3.TabIndex = 1;
			this.button3.Text = "退出";
			this.button3.Click += new System.EventHandler(this.button3_Click);
			// 
			// fbd
			// 
			this.fbd.Description = "在此选择要将备份文件保存到的目录";
			// 
			// backup
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(292, 125);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.tb);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.button3);
			this.MaximizeBox = false;
			this.MaximumSize = new System.Drawing.Size(300, 152);
			this.MinimizeBox = false;
			this.MinimumSize = new System.Drawing.Size(300, 152);
			this.Name = "backup";
			this.ShowInTaskbar = false;
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
			this.Text = "数据备份";
			this.ResumeLayout(false);

		}
		#endregion

		private void button1_Click(object sender, System.EventArgs e)
		{
			if (fbd.ShowDialog() == DialogResult.OK)
			{
				this.tb .Text =this.fbd.SelectedPath ;
			}
			else
			{
				this.tb .Text ="";
			}
		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			DataConn dc=new DataConn ();
			string str=dc.connstr ;
			SqlConnection conn=new SqlConnection (str);
			
			string dirstr=this.tb .Text+"\\BK"+(System.DateTime.Today .ToShortDateString())+".dat";//以BK＋当前日期的形式作为备份文件的名字
			string sql="backup DATABASE RoomManage TO disk='"+dirstr+"'";
			SqlCommand comd=new SqlCommand (sql,conn);
			conn.Open ();
			try
			{
				comd.ExecuteNonQuery ();
				MessageBox.Show ("备份成功！","",MessageBoxButtons.OK ,MessageBoxIcon.Information );
				tb.Text ="";
				
			}
			catch
			{
				MessageBox.Show ("备份失败！请仔细检查，重新备份。","",MessageBoxButtons.OK,MessageBoxIcon.Error );
			}
			finally
			{
				conn.Close ();
				comd.Dispose ();
			}
		}

		private void button3_Click(object sender, System.EventArgs e)
		{
			if(MessageBox.Show("真的要退出吗？","注意",MessageBoxButtons.OKCancel,MessageBoxIcon.Question)==DialogResult.OK)
				this.Close ();
		}

	}
}