private void button1_Click(object sender, EventArgs e)        {//选择要备份的路径            this.folderBrowserDialog1.ShowDialog();this.txtDbBackup.Text = folderBrowserDialog1.SelectedPath;        }

private void btnChooseOK_Click(object sender, EventArgs e)        {

if (txtDbhuanyuan.Text=="")            {//路径+数据库名字                string name = txtDbBackup.Text+@"\QMX.mdf";//备份数据库语句                string sql = string.Format(@"Backup Database QMX To disk='{0}'",name);

if (DBHelpers.Upadate(sql)) {                    MessageBox.Show("备份成功");

                }else                {                    MessageBox.Show("备份失败");                }            }else            {                MessageBox.Show("请选择路径");            }

        }

private void btnDeoxidizeTxt_Click(object sender, EventArgs e)        {//选择要恢复的路径

string xiaohao;            OpenFileDialog op = new OpenFileDialog();//默认打开D盘            op.InitialDirectory = "D:\\";            op.Filter = "(*.mdf)|*.mdf|(*.png)|*.png|(*.*)|*.*";            op.RestoreDirectory = true;            op.AddExtension = true;if (op.ShowDialog()==DialogResult.OK)            {                xiaohao= op.FileName;

                txtDbhuanyuan.Text = xiaohao;            }        }

private void btnDeoxidize_Click(object sender, EventArgs e)        {if (txtDbhuanyuan.Text=="")            {                MessageBox.Show("请正确选择地址");            }else            {//恢复数据库sql语句                string sql = string.Format("if exists(select * from sysdatabases where name='QMX') drop database QMX   use master restore database QMX from disk='{0}'", this.txtDbhuanyuan.Text);

if (DBHelpers.Upadate(sql))                {                    MessageBox.Show("数据库恢复成功");                }else                {                    MessageBox.Show("数据库恢复失败");                }            }

        }