revertdata.cs

订阅报刊的企业员工用户希望通过企业的系统更方便、快捷地订阅报刊

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

using 报刊管理.类;//添加引用
using System.Data.SqlClient;


namespace 报刊管理.系统维护
{
    public partial class RevertData : Form
    {
        public RevertData()
        {
            InitializeComponent();
        }

        SqlBaseClass SqlClass = new SqlBaseClass();
        static string BakPath = String.Empty;//定义变量保存路径
        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog OpenFile = new OpenFileDialog();
            if (OpenFile.ShowDialog() == DialogResult.OK)
            {
                this.textBox1.Text = OpenFile.FileName;
                BakPath = OpenFile.FileName;
            }
        }

        private void button2_Click(object sender, EventArgs e)
        {
            if (this.textBox1.Text != "")
            {
                try
                {
                    string Str_Sqlcmd = "USE master DECLARE tb CURSOR LOCAL FOR SELECT 'Kill '+ CAST(Spid AS VARCHAR) FROM master.dbo.sysprocesses";
                    Str_Sqlcmd += " WHERE dbid=DB_ID('newsmanagement') DECLARE @s nvarchar(1000) OPEN tb FETCH tb INTO @s";
                    Str_Sqlcmd += " WHILE @@FETCH_STATUS = 0 BEGIN EXEC (@s) FETCH tb INTO @s END CLOSE tb DEALLOCATE tb";
                    Str_Sqlcmd += "  RESTORE DATABASE newsmanagement FROM disk='" + BakPath + "'";
                    if (SqlClass.GetCon().State == ConnectionState.Open)
                    {
                        SqlClass.GetCon().Close();
                        try
                        {
                            SqlCommand sqlcom = new SqlCommand(Str_Sqlcmd, SqlClass.GetCon());
                            sqlcom.ExecuteNonQuery();
                            MessageBox.Show("数据还原成功！", "提示框", MessageBoxButtons.OK, MessageBoxIcon.Information);
                            if (SqlClass.GetCon().State == ConnectionState.Closed)
                            {
                                SqlClass.GetCon().Open();
                            }
                        }
                        catch
                        {
                            button2_Click(sender, e);
                        }
                    }
                }
                catch
                {
                    button2_Click(sender, e);
                }
            }
            else
            {
                MessageBox.Show("请选择备份的正确位置及文件名！", "提示框", MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        private void button3_Click(object sender, EventArgs e)
        {
            this.Close();
        }


    }
}