» » Tự động tạo thư mục theo thời gian để lưu trữ trong Asp.net

(Automatically Create folders or Directory files In Asp.net) – Đối với các thư mục lưu trữ file, nếu không được quy hoạch và đặt tên theo quy chuẩn thì theo thời gian file sẽ nhiều lên lúc đó việc tìm kiếm sẽ gặp nhiều khó khăn. Đặc biệt là việc lưu trữ các file trên Server được Upload từ phía người dùng. Bài viết dưới đây sẽ hướng dẫn các bạn 1 cách để lưu trữ file một cách khoa học, đó là việc tự động tạo ra các thư mục theo năm, theo tháng. Mỗi khi người dùng Upload file chương trình sẽ tự động kiểm tra xem đã tồn tại thư mục đó chưa, nếu chưa có thì tạo thư mục mới và Upload file vào thư mục đó. Và nếu có thư mục đó rồi thì chỉ thực hiện công việc Upload file thôi.


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Code Example C#, Code Example VB.NET
Code Example C#, Code Example VB.NET


- B1: Tạo Project trong Microsoft Visual Studio 2010

- B2: Mở file Default.aspx dưới dạng HTML và  nhập mã HTML
C# Code
<%@ PageTitle="Automatically Create Folder in Asp.Net" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="AutomaticallyCreateFolder._Default" %>

<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
    <table cellpadding="3"cellspacing="5"border="0"width="50%">
        <tr>
            <td>
                <divclass="panel panel-default">
                    <divclass="panel-heading">
                        <asp:label id="lblHeader" runat="server" Text="File Upload"></asp:label>
                    </div>
                    <divclass="panel-body">
                        <table cellspacing="2"cellpadding="3"border="0"width="100%">
                            <tr>
                                <td style="width:25%;">
                                    <asp:label id="plFileName"runat="server"Text="File Name (*)"></asp:label>
                                </td>
                                <td>
                                    <asp:FileUpload ID="FileUpload"runat="server"Width="150px"/><br />
                                    <asp:CustomValidator id="valFile"runat="server"CssClass="NormalRed"ValidationGroup="validate"OnServerValidate="valFile_ServerValidate"ErrorMessage="You Must Upload A File" Display="Dynamic"></asp:CustomValidator>
                                </td>
                            </tr>
                            <tr>
                                <td colspan="2">
                                    <asp:label id="lblMessage"runat="server"Visible="false"></asp:label><br />
                                </td>
                            </tr>
                        </table>
                    </div>
                    <div class="modal-footer">
                        <div class="btn-group">
                            <asp:LinkButton id="cmdUpload"runat="server"CssClass="btn btn-small" OnClick="cmdUpload_Click" ValidationGroup="validate" Causesvalidation="true">
                                <i class="icon-upload"></i>&nbsp;&nbsp;<asp:label id="lblUpload" runat="server" Text="Upload"></asp:label>
                            </asp:LinkButton>
                        </div>
                    </div>
                </div>
            </td>
        </tr>       
    </table>
</asp:Content>
VB.Net Code
<%@ PageTitle="Automatically Create Folder in Asp.Net" Language="vb" MasterPageFile="~/Site.Master" AutoEventWireup="false" CodeBehind="Default.aspx.vb" Inherits="AutomaticallyCreateFolder._Default" %>

<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
    <table cellpadding="3"cellspacing="5"border="0"width="50%">
        <tr>
            <td>
                <divclass="panel panel-default">
                    <divclass="panel-heading">
                        <asp:label id="lblHeader" runat="server" Text="File Upload"></asp:label>
                    </div>
                    <divclass="panel-body">
                        <table cellspacing="2"cellpadding="3"border="0"width="100%">
                            <tr>
                                <td style="width:25%;">
                                    <asp:label id="plFileName"runat="server"Text="File Name (*)"></asp:label>
                                </td>
                                <td>
                                    <asp:FileUpload ID="FileUpload"runat="server"Width="150px"/><br />
                                    <asp:CustomValidator id="valFile"runat="server"CssClass="NormalRed"ValidationGroup="validate"ErrorMessage="You Must Upload A File" Display="Dynamic"></asp:CustomValidator>
                                </td>
                            </tr>
                            <tr>
                                <td colspan="2">
                                    <asp:label id="lblMessage"runat="server"Visible="false"></asp:label><br />
                                </td>
                            </tr>
                        </table>
                    </div>
                    <divclass="modal-footer">
                        <div class="btn-group">
                            <asp:LinkButton id="cmdUpload"runat="server"CssClass="btn btn-small" ValidationGroup="validate" Causesvalidation="true">
                                <i class="icon-upload"></i>&nbsp;&nbsp;<asp:label id="lblUpload" runat="server" Text="Upload"></asp:label>
                            </asp:LinkButton>
                        </div>
                    </div>
                </div>
            </td>
        </tr>       
    </table>
</asp:Content>

- B3: Viết Code cho file Default.aspx
C# Code
//Visit http://www.laptrinhdotnet.com for more ASP.NET Tutorials
using Microsoft.VisualBasic;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Diagnostics;
using System.Web.UI;
using System.Web;
using System.Web.UI.WebControls;

namespace AutomaticallyCreateFolder
{

    public partial class _Default : System.Web.UI.Page
    {

        #region"Private Members"

        string FilePath = "";

        #endregion

        #region"Private Methods"

        protected stringUploadFile(FileUpload file)
        {
            string fileName = null;
            string fileExtension = null;
            string strDate = DateTime.Now.ToString("MM_dd_yyyy_hh_mm_ss");

            SetFilePath();

            fileExtension = Path.GetExtension(file.FileName).Replace(".", "");
            fileName = file.FileName.Substring(file.FileName.LastIndexOf("\\\\") + 1);
            fileName = fileName.Substring(0, fileName.LastIndexOf(fileExtension)) + strDate + "." + fileExtension;

            FilePath = FilePath + fileName;
            file.SaveAs(FilePath);
            return fileName;
        }

        private voidSetFilePath()
        {
            FilePath = MapPath("~/Upload/") + "/" + DateTime.Now.Year + "/" + DateTime.Now.Month + "/";
            //Create Folder
            if (!Directory.Exists(FilePath))
            {
                Directory.CreateDirectory(FilePath);
            }
        }

        #endregion

        #region"Event Handles"

        protected voidcmdUpload_Click(object sender, System.EventArgs e)
        {
            if (Page.IsValid)
            {
                try
                {
                    string sFileName = "";
                    if (!string.IsNullOrEmpty(FileUpload.PostedFile.FileName))
                    {
                        sFileName = UploadFile(FileUpload);
                    }
                }
                catch
                {
                    lblMessage.Text = "Upload file Error";
                    lblMessage.ForeColor = System.Drawing.Color.Red;
                    lblMessage.Visible = true;
                }
                finally
                {
                    lblMessage.Text = "Upload file Sucessfully";
                    lblMessage.ForeColor = System.Drawing.Color.Green;
                    lblMessage.Visible = true;
                }
            }
        }

        protected voidvalFile_ServerValidate(object source, ServerValidateEventArgs args)
        {
            if (FileUpload.PostedFile != null)
            {
                if (FileUpload.PostedFile.ContentLength > 0)
                {
                    args.IsValid = true;
                }
                else
                {
                    args.IsValid = false;
                }
            }
        }

        #endregion
    }
}
VB.Net Code

'Visit http://www.laptrinhdotnet.com for more ASP.NET Tutorials
Imports System.IO

Namespace AutomaticallyCreateFolder

    Public Class _Default
        Inherits System.Web.UI.Page

#Region "Private Members"

        Private FilePath As String = ""

#End Region

#Region "Private Methods"

        Protected FunctionUploadFile(ByVal file AsFileUpload) AsString
            Dim fileName As String
            Dim fileExtension As String
            Dim strDate As String = Now.ToString("MM_dd_yyyy_hh_mm_ss")

            SetFilePath()

            fileExtension = Replace(Path.GetExtension(file.FileName), ".", "")
            fileName = file.FileName.Substring(file.FileName.LastIndexOf("\\") + 1)
            fileName = fileName.Substring(0, fileName.LastIndexOf(fileExtension)) & strDate & "." & fileExtension

            FilePath = FilePath + fileName
            file.SaveAs(FilePath)
            Return fileName
        End Function

        Private SubSetFilePath()
            FilePath = MapPath("~/Upload/") & "/" & Now.Year & "/" & Now.Month & "/"
            'Create Folder
            If Not Directory.Exists(FilePath) Then
                Directory.CreateDirectory(FilePath)
            End If
        End Sub

#End Region

#Region "Event Handles"

        Private SubcmdUpload_Click(ByVal sender As Object, ByVal e As System.EventArgs) HandlescmdUpload.Click
            If Page.IsValid Then
                Try
                    Dim sFileName AsString = ""
                    If FileUpload.PostedFile.FileName <> "" Then
                        sFileName = UploadFile(FileUpload)
                    End If
                Catch ex AsException
                    lblMessage.Text = ex.Message
                    lblMessage.ForeColor = System.Drawing.Color.Red
                    lblMessage.Visible = True
                    Exit Sub
                Finally
                    lblMessage.Text = "Upload file Sucessfully"
                    lblMessage.ForeColor = System.Drawing.Color.Green
                    lblMessage.Visible = True
                End Try
            End If
        End Sub

        Private SubvalFile_ServerValidate(ByVal source As System.Object, ByVal args AsSystem.Web.UI.WebControls.ServerValidateEventArgs) Handles valFile.ServerValidate
            Try
                If Not(FileUpload.PostedFile Is Nothing) Then
                    If (FileUpload.PostedFile.ContentLength > 0) Then
                        args.IsValid = True
                        Return
                    End If
                End If
                args.IsValid = False
            Catch exc As Exception

            End Try
        End Sub

#End Region

    End Class

End Namespace
Code Example C#, Code Example VB.NET
Code Example C#, Code Example VB.NET




Chúc các bạn thành công!

Quang Bình
9:26:00 PM
Gia Khang

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