1 using System;
 2 using System.Collections.Generic;
 3 using System.ComponentModel;
 4 using System.Data;
 5 using System.Drawing;
 6 using System.Text;
 7 using System.Windows.Forms;
 8 using System.IO;
 9 using System.Linq;
10 using System.Data.SqlClient;
11
12 namespace BackUpDataBase
13 {
14     public partial class Frm_Main : Form
15     {
16         public Frm_Main()
17         {
18             InitializeComponent();
19         }
20
21         private void Form1_Load(object sender, EventArgs e)
22         {
23             using (SqlConnection con = new SqlConnection(//创建数据库连接对象
24 @"server=.;pwd=123;uid=sa;database=master"))
25             {
26                 DataTable dt = new DataTable();//创建数据表
27                 SqlDataAdapter da = new SqlDataAdapter(//创建数据适配器对象
28                     "select name from sysdatabases", con);
29                 da.Fill(dt);//填充数据表
30                 this.comboBox1.DataSource = dt.DefaultView;//设置数据源
31                 this.comboBox1.DisplayMember = "name";//设置显示属性
32                 this.comboBox1.ValueMember = "name";//设置实际值
33             }
34         }
35
36         private void button1_Click(object sender, EventArgs e)
37         {
38             beifenInfo();//备份数据库
39         }
40
41         public void beifenInfo()
42         {
43             try
44             {
45                 sd.InitialDirectory = Application.StartupPath + "\\";//默认路径为D：
46                 sd.FilterIndex = 1;//默认值为第一个
47                 sd.RestoreDirectory = true;//重新定位保存路径
48                 sd.Filter = "备份文件 (*.bak)|*.bak|所有文件 (*.*)|*.*";//设置筛选文件类型
49                 if (sd.ShowDialog() == DialogResult.OK)
50                 {
51                     if (!File.Exists(sd.FileName.ToString()))
52                     {
53                         SqlConnection con = new SqlConnection();//创建数据库连接对象
54                         con.ConnectionString = @"server=.;uid=sa;pwd=123;database='" + this.comboBox1.Text + "'";
55                         con.Open();//打开数据连接
56                         SqlCommand com = new SqlCommand();//创建命令对象
57                         this.textBox1.Text = sd.FileName.ToString();//显示文件路径信息
58                         com.CommandText = "BACKUP DATABASE " + this.comboBox1.Text +//设置要执行的SQL语句
59                             " TO DISK = '" + sd.FileName.ToString() + "'";
60                         com.Connection = con;//设置连接属性
61                         com.ExecuteNonQuery();//执行SQL语句
62                         con.Close();//关闭数据库连接
63                         MessageBox.Show("数据备份成功！");//弹出消息对话框
64                     }
65                     else
66                     {
67                         MessageBox.Show("请重新命名！");//弹出消息对话框
68                     }
69                 }
70             }
71             catch (Exception k)
72             {
73                 MessageBox.Show(k.Message);//弹出消息对话框
74             }
75         }
76     }
77 }

  1 namespace BackUpDataBase
  2 {
  3     partial class Frm_Main
  4     {
  5         /// <summary>
  6         /// 必需的设计器变量。
  7         /// </summary>
  8         private System.ComponentModel.IContainer components = null;
  9
 10         /// <summary>
 11         /// 清理所有正在使用的资源。
 12         /// </summary>
 13         /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
 14         protected override void Dispose(bool disposing)
 15         {
 16             if (disposing && (components != null))
 17             {
 18                 components.Dispose();
 19             }
 20             base.Dispose(disposing);
 21         }
 22
 23         #region Windows 窗体设计器生成的代码
 24
 25         /// <summary>
 26         /// 设计器支持所需的方法 - 不要
 27         /// 使用代码编辑器修改此方法的内容。
 28         /// </summary>
 29         private void InitializeComponent()
 30         {
 31             this.sd = new System.Windows.Forms.SaveFileDialog();
 32             this.button1 = new System.Windows.Forms.Button();
 33             this.label1 = new System.Windows.Forms.Label();
 34             this.comboBox1 = new System.Windows.Forms.ComboBox();
 35             this.textBox1 = new System.Windows.Forms.TextBox();
 36             this.label3 = new System.Windows.Forms.Label();
 37             this.SuspendLayout();
 38             //
 39             // button1
 40             //
 41             this.button1.Location = new System.Drawing.Point(218, 68);
 42             this.button1.Name = "button1";
 43             this.button1.Size = new System.Drawing.Size(75, 23);
 44             this.button1.TabIndex = 0;
 45             this.button1.Text = "备份";
 46             this.button1.UseVisualStyleBackColor = true;
 47             this.button1.Click += new System.EventHandler(this.button1_Click);
 48             //
 49             // label1
 50             //
 51             this.label1.AutoSize = true;
 52             this.label1.Location = new System.Drawing.Point(38, 18);
 53             this.label1.Name = "label1";
 54             this.label1.Size = new System.Drawing.Size(77, 12);
 55             this.label1.TabIndex = 1;
 56             this.label1.Text = "操作数据库：";
 57             //
 58             // comboBox1
 59             //
 60             this.comboBox1.FormattingEnabled = true;
 61             this.comboBox1.Location = new System.Drawing.Point(122, 15);
 62             this.comboBox1.Name = "comboBox1";
 63             this.comboBox1.Size = new System.Drawing.Size(171, 20);
 64             this.comboBox1.TabIndex = 2;
 65             //
 66             // textBox1
 67             //
 68             this.textBox1.Enabled = false;
 69             this.textBox1.Location = new System.Drawing.Point(121, 41);
 70             this.textBox1.Name = "textBox1";
 71             this.textBox1.Size = new System.Drawing.Size(172, 21);
 72             this.textBox1.TabIndex = 4;
 73             //
 74             // label3
 75             //
 76             this.label3.AutoSize = true;
 77             this.label3.Location = new System.Drawing.Point(15, 44);
 78             this.label3.Name = "label3";
 79             this.label3.Size = new System.Drawing.Size(101, 12);
 80             this.label3.TabIndex = 5;
 81             this.label3.Text = "备份路径及名称：";
 82             //
 83             // Form1
 84             //
 85             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
 86             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
 87             this.ClientSize = new System.Drawing.Size(310, 103);
 88             this.Controls.Add(this.label3);
 89             this.Controls.Add(this.textBox1);
 90             this.Controls.Add(this.comboBox1);
 91             this.Controls.Add(this.label1);
 92             this.Controls.Add(this.button1);
 93             this.Name = "Form1";
 94             this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
 95             this.Text = "备份SQL Server数据库";
 96             this.Load += new System.EventHandler(this.Form1_Load);
 97             this.ResumeLayout(false);
 98             this.PerformLayout();
 99
100         }
101
102         #endregion
103
104         private System.Windows.Forms.SaveFileDialog sd;
105         private System.Windows.Forms.Button button1;
106         private System.Windows.Forms.Label label1;
107         private System.Windows.Forms.ComboBox comboBox1;
108         private System.Windows.Forms.TextBox textBox1;
109         private System.Windows.Forms.Label label3;
110     }
111 }