代码示例:

protected void Button1_Click(object sender, EventArgs e) 
{ 
string newname = "WebJake" + DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString()+".bak"; 
SqlConnection cn = DB.createCon(); 
string nepath=Server.MapPath("../../DataBack/")+newname; 
string sql = "BACKUP DATABASE WebJake to DISK ='"+nepath+"'"; 
SqlCommand cmd = new SqlCommand(sql,cn); 
try 
{ 
cn.Open(); 
cmd.ExecuteNonQuery(); 
HyperLink1.Text = "成功备份到服务器：" + nepath+" 请点击下载！"; 
HyperLink1.NavigateUrl = "../../DataBack/"+newname; 
HyperLink1.Visible = true; 
} 
catch (Exception ex) 
{ 
string exm = ex.Message; 
Label1.Text = "备份数据库出错，该文件可能不存在！"; 
Label1.Visible = true; 
} 
finally 
{ 
cmd.Dispose(); 
cn.Close(); 
cn.Dispose(); 
}