string SqlStr1 = "Server=(local);database='" + this.DropDownList1.SelectedValue + "';U; 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
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