ASP.NET下备份与还原数据库代码

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'";

<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>

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(); 
} 
} 
}

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

<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>

 
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(); 
} 
} 
}