使用c#在文件夹上保存多个文件
使用c#在文件夹上保存多个文件
提问于 2014-09-09 12:50:26
我想将文件保存在没有jquery、javascript和任何插件的文件夹上。我只是在使用ASP.Net和C#
这是我的ASPX代码：
<%@ Page Title="Home Page" Language="C#" MasterPageFile="~/Site.master" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<asp:Content ID="HeaderContent" runat="server" ContentPlaceHolderID="HeadContent">
</asp:Content>
<asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
<asp:Label ID="Label1" runat="server" Text="Full Name : " ForeColor="Black"></asp:Label>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="Required" ForeColor="Red" ControlToValidate="TextBox1">
</asp:RequiredFieldValidator><br /><br />
<asp:FileUpload ID="FileUpload1" runat="server" AllowMultiple="true" /><br /><br />
<asp:Button ID="Button1" runat="server" Text="Upload" onclick="Button1_Click" style="margin-bottom:10px;" />
<asp:GridView ID="GridView1" runat="server" CellPadding="4" ForeColor="#333333" GridLines="None" AutoGenerateColumns="False">
<AlternatingRowStyle BackColor="White" ForeColor="#284775" />
<Columns>
<asp:TemplateField HeaderText="Remove">
<ItemTemplate>
<asp:LinkButton ID = "lnkDelete" Text = "Remove" CommandArgument = '<%# Eval("Value") %>' runat = "server" OnClick = "DeleteFile" />
</ItemTemplate>
</asp:TemplateField>
<asp:BoundField DataField="Text" HeaderText="Image Name" />
<asp:ImageField DataImageUrlField="Value" HeaderText="Image" ControlStyle-Height="100" ControlStyle-Width="100" />
</Columns>
<EditRowStyle BackColor="#999999" />
<FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" />
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
<SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" />
<SortedAscendingCellStyle BackColor="#E9E7E2" />
<SortedAscendingHeaderStyle BackColor="#506C8C" />
<SortedDescendingCellStyle BackColor="#FFFDF8" />
<SortedDescendingHeaderStyle BackColor="#6F8DAE" />
</asp:GridView>
</asp:Content>C#代码：
protected void Button1_Click(object sender, EventArgs e)
{
DateTime curr = DateTime.Now;
DateTime INDIAN_ZONE = TimeZoneInfo.ConvertTimeBySystemTimeZoneId(curr, "India Standard Time");
if (FileUpload1.HasFile)
{
foreach (HttpPostedFile file in FileUpload1.PostedFile)
{
string time1 = INDIAN_ZONE.ToString("MM-dd-yyyy_hhmmss");
string directoryPath = Server.MapPath(string.Format("./upload/" + TextBox1.Text));
if (!Directory.Exists(directoryPath))
{
Directory.CreateDirectory(directoryPath);
}
else
{
}
string fileName = Path.GetFileName(file.FileName);
fileName = time1 + fileName;
string path = "./upload/" + TextBox1.Text + "/";
file.SaveAs(Server.MapPath(path) + fileName);
}
//GridView1 Bind with attach file
string[] filePaths = Directory.GetFiles(Server.MapPath("~/upload/" + TextBox1.Text + "/"));
List<ListItem> files = new List<ListItem>();
foreach (string filePath in filePaths)
{
string fileName1 = Path.GetFileName(filePath);
files.Add(new ListItem(fileName1, "~/upload/" + TextBox1.Text + "/" + fileName1));
}
GridView1.DataSource = files;
GridView1.DataBind();
}
else
{
string time1 = INDIAN_ZONE.ToString("MM-dd-yyyy_hhmmss");
string directoryPath = Server.MapPath(string.Format("./upload/" + TextBox1.Text));
if (!Directory.Exists(directoryPath))
{
Directory.CreateDirectory(directoryPath);
}
else
{
}
}
}我得到了这个错误：
foreach statement cannot operate on variables of type 'System.Web.HttpPostedFile' because 'System.Web.HttpPostedFile' does not contain a public definition for 'GetEnumerator'在这条线上：
foreach (HttpPostedFile file in FileUpload1.PostedFile)我想在使用ASP.Net和C#的文件夹中保存多个文件。
Stack Overflow用户
发布于 2014-09-09 12:59:12
您的错误来自于这样一个事实:您试图在HttpPostedFile对象- 见MSDN上循环。
您需要遍历PostedFiles属性，如下所示：
foreach (var postedFile in FileUpload1.PostedFiles)
{
// do stuff
}编辑：
PostedFiles属性仅在.Net Framework4.5中有效：
支持的.NET框架: 4.5
PostEdit:
要使该属性正常工作，仅安装.Net Framework4.5是不够的，您必须让您的项目针对.Net Framework4.5(在您的示例中，您的目标是.Net Framework4.0)。
您可以将项目转换为目标.Net框架，方法是进入VS，右键单击项目和应用程序选项卡(应该是默认打开的选项卡)，从目标框架下拉菜单中选择所需的框架。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/25745121
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