ASP.NET备份恢复SqlServer数据库

备份SqlServer数据库
核心技术：
using System.Data.SqlClient;
using System.IO;
string SqlStr1 = "Server=(local);DataBase=master;Uid=sa;Pwd=";
string SqlStr2 = "Exec sp_helpdb";
string SqlStr1 = "Server=(local);database='" + this.DropDownList1.SelectedValue + "';Uid=sa;Pwd=";
string SqlStr2 = "backup database " + this.DropDownList1.SelectedValue + " to disk='" + this.TextBox1.Text.Trim() + ".bak'";

1.前台

        <table>
            <tr>
                <td style="width: 100px"><span style="font-size: 9pt">操 作 数 据 库</span></td>
                <td><asp:DropDownList ID="DropDownList1" runat="server" Font-Size="9pt" Width="124px"></asp:DropDownList></td>
                <td style="width: 100px"></td>
            </tr>
            <tr>
                <td style="width: 100px"><span style="font-size: 9pt">备份名称和位置</span></td>
                <td style="width: 100px"><asp:TextBox ID="TextBox1" runat="server" Font-Size="9pt" Width="117px"></asp:TextBox></td>
                <td style="width: 100px"><span style="font-size: 9pt; color: #ff3300">（如D:\beifen）</span></td>
            </tr>
            <tr>
             <td colspan="3"><asp:Button ID="Button1" runat="server" Font-Size="9pt" OnClick="Button1_Click" Text="备份数据库" /></td>
            </tr>
        </table>

2.后台

using System.Data.SqlClient;
using System.IO;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            string SqlStr1 = "Server=(local);DataBase=master;Uid=sa;Pwd=";
            string SqlStr2 = "Exec sp_helpdb";
            SqlConnection con = new SqlConnection(SqlStr1);
            con.Open();
            SqlCommand com = new SqlCommand(SqlStr2, con);
            SqlDataReader dr = com.ExecuteReader();
            this.DropDownList1.DataSource = dr;
            this.DropDownList1.DataTextField = "name";
            this.DropDownList1.DataBind();
            dr.Close();
            con.Close();
        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        string SqlStr1 = "Server=(local);database='" + this.DropDownList1.SelectedValue + "';Uid=sa;Pwd=";
        string SqlStr2 = "backup database " + this.DropDownList1.SelectedValue + " to disk='" + this.TextBox1.Text.Trim() + ".bak'";
        SqlConnection con = new SqlConnection(SqlStr1);
        con.Open();
        try
        {
            if (File.Exists(this.TextBox1.Text.Trim()))
            {
                Response.Write("<script language=javascript>alert('此文件已存在，请从新输入！');location='Default.aspx'</script>");
                return;
            }
            SqlCommand com = new SqlCommand(SqlStr2, con);
            com.ExecuteNonQuery();
            Response.Write("<script language=javascript>alert('备份数据成功！');location='Default.aspx'</script>");
        }
        catch (Exception error)
        {
            Response.Write(error.Message);
            Response.Write("<script language=javascript>alert('备份数据失败！')</script>");
        }
        finally
        {
            con.Close();
        }
    }
}

还原SqlServer
核心技术:
string SqlStr1 = "Server=(local);database='" + this.DropDownList1.SelectedValue + "';Uid=sa;Pwd=";
string SqlStr2 = "use master restore database " + dbname + " from disk='" + path + "'";

1.前台
       <table>
            <tr>
                <td style="width: 100px; height: 21px"><span style="font-size: 9pt">操 作 数 据 库</span></td>
                <td><asp:DropDownList ID="DropDownList1" runat="server" Font-Size="9pt" Width="124px"></asp:DropDownList></td>
                <td style="width: 100px; height: 21px"></td>
            </tr>
            <tr>
                <td style="width: 100px"><span style="font-size: 9pt">操 作 数 据 库</span></td>
                <td style="width: 100px"><asp:FileUpload ID="FileUpload1" runat="server" Font-Size="9pt" Width="190px" /></td>
                <td style="width: 100px">
                </td>
            </tr>
            <tr>
             <td colspan="3"><asp:Button ID="Button1" runat="server" Font-Size="9pt" OnClick="Button1_Click" Text="还原数据库" /></td>
            </tr>
        </table>
2.后台

using System.Data.SqlClient;
using System.IO;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            string SqlStr1 = "Server=(local);DataBase=master;Uid=sa;Pwd=";
            string SqlStr2 = "Exec sp_helpdb";
            SqlConnection con = new SqlConnection(SqlStr1);
            con.Open();
            SqlCommand com = new SqlCommand(SqlStr2, con);
            SqlDataReader dr = com.ExecuteReader();
            this.DropDownList1.DataSource = dr;
            this.DropDownList1.DataTextField = "name";
            this.DropDownList1.DataBind();
            dr.Close();
            con.Close();
        }
    }

    protected void Button1_Click(object sender, EventArgs e)
    {
        string path = this.FileUpload1.PostedFile.FileName; //获得备份路径及数据库名称
        string dbname = this.DropDownList1.SelectedValue;
        string SqlStr1 = "Server=(local);database='" + this.DropDownList1.SelectedValue + "';Uid=sa;Pwd=";
        string SqlStr2 = "use master restore database " + dbname + " from disk='" + path + "'";
        SqlConnection con = new SqlConnection(SqlStr1);
        con.Open();
        try
        {
            SqlCommand com = new SqlCommand(SqlStr2, con);
            com.ExecuteNonQuery();
            Response.Write("<script language=javascript>alert('还原数据成功！');location='Default.aspx'</script>");
        }
        catch (Exception error)
        {
            Response.Write(error.Message);
            Response.Write("<script language=javascript>alert('还原数据失败！')</script>");
        }
        finally
        {
            con.Close();
        }
    }
}