文件上载控件无法正常工作 [英] File Upload Control is not working
本文介绍了文件上载控件无法正常工作的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
文件名和扩展名是空的。请帮助。
aspx文件code：
＆LT; TR＆GT;
＆LT; TD合并单元格=3的风格=高度：0像素＆GT;
＆LT; DIV ID =trFile=服务器级=inlineGridAddAddress＆GT;
＆所述;表CELLPADDING =0CELLSPACING =0＆GT;
＆所述; TR＆GT;
＆所述; TD＆GT;
＆LT; DIV CLASS =formFieldName＆GT;
＆LT; ASP：的RequiredFieldValidator ID =reqFile=服务器
的ControlToValidate =文件上传的ErrorMessage =请选择文件
的ValidationGroup =保存的CssClass =验证＆GT;＆LT; / ASP：＆的RequiredFieldValidator GT;
＆LT; / DIV＆GT;
＆LT; / TD＆GT;
＆LT; / TR＆GT;
＆所述; TR＆GT;
＆所述; TD＆GT;
＆LT; ASP：标签ID =lblFile=服务器＆GT;文件：LT; / ASP：标签＆gt;
＆LT; / TD＆GT;
＆所述; TD＆GT;
＆LT; DIV＆GT;
＆LT; ASP：文件上传ID =文件上传=服务器/＆GT;
＆LT; / DIV＆GT;
＆LT; / TD＆GT;
＆LT; TD类=tdformFieldValueLogin的风格=宽度：350像素;填充左：50像素＆GT;
＆LT; ASP：ImageButton的ID =btnFileUploadSave=服务器的ValidationGroup =保存
的ImageUrl =〜/ App_Themes文件/默认/图像/ update.png工具提示=保存
HEIGHT =18像素的onclick =btnFileUploadSave_Click/＆GT;
＆LT; ASP：ImageButton的ID =btnFileUploadCancel的ImageUrl =〜/ App_Themes文件/默认/图像/ cancel.png
=服务器工具提示=取消HEIGHT =18像素/＆GT;
＆LT; / TD＆GT;
＆LT; / TR＆GT; ＆所述; TR＆GT;
＆所述; TD＆GT;
＆LT; DIV CLASS =formSmallTextAreaName＆GT;
＆LT; ASP：标签ID =lblDescription=服务器＆GT;简介：＆LT; / ASP：标签＆gt;
＆LT; / DIV＆GT;
＆LT; / TD＆GT;
＆所述; TD＆GT;
＆LT; DIV CLASS =formSmallTextAreaValue＆GT;
＆LT; ASP：RegularEx pressionValidator ID =revNote
=服务器的ControlToValidate =txtDescription
ValidationEx pression =^ [\\ S \\ S] {0,4096} $
文本=最大4096个字符是允许的。
的CssClass =验证显示=动态＆GT;
＆LT; / ASP：RegularEx pressionValidator＆GT;
＆LT; ASP：文本框ID =txtDescription
=服务器的CssClass =textEntry1
的TextMode =多行MAXLENGTH =4096WIDTH =218px＆GT;
＆LT; / ASP：文本框＆GT;
＆LT; / DIV＆GT;
＆LT; / TD＆GT;
＆LT; / TR＆GT;
＆LT; /表＆gt;
＆LT; / DIV＆GT;
＆LT; / TD＆GT;
＆LT; / TR＆GT;
CS文件code：
保护无效btnFileUploadSave_Click（对象发件人，ImageClickEventArgs E）
{
字符串路径=使用Server.Mappath（。）+\\\\ \\\\文件+ this.fileUpload.FileName;
字符串fileExtension = System.IO.Path.GetExtension（this.fileUpload.FileName）.ToLower（）;
如果（fileExtension ==名.txt|| fileExtension ==名为.doc|| fileExtension ==的.docx|| fileExtension ==.ZIP|| fileExtension ==.rar程序|| fileExtension == 的.cs|| fileExtension ==.PPT|| fileExtension ==.PDF|| fileExtension ==html的|| fileExtension ==.JPG|| fileExtension ==符.gif| | fileExtension ==.BMP|| fileExtension ==巴纽|| fileExtension ==名为.tif|| fileExtension ==.rm的|| fileExtension ==.MP3|| fileExtension ==的.xls）
{
this.fileUpload.PostedFile.SaveAs（路径）;
}
}
解决方案
如果你把你的UploadControl在一个UpdatePanel（阿贾克斯的东西），它不会被默认的工作。
看看下面的链接
<一个href=\"http://geekswithblogs.net/ranganh/archive/2008/04/01/file-upload-in-updatepanel-asp.net-ajax.aspx\">File上传的UpdatePanel，ASP.NET AJAX
File name and extension are empty. Please help.
ASPX FILE CODE:
<tr>
<td colspan="3" style="height:0px">
<div id="trFile" runat="server" class="inlineGridAddAddress">
<table cellpadding="0" cellspacing="0">
<tr>
<td>
<div class="formFieldName">
<asp:RequiredFieldValidator ID="reqFile" runat="server"
ControlToValidate="fileUpload" ErrorMessage="Please select File"
ValidationGroup="Save" CssClass="Validations" ></asp:RequiredFieldValidator>
</div>
</td>
</tr>
<tr>
<td>
<asp:Label ID="lblFile" runat="server">File:</asp:Label>
</td>
<td>
<div>
<asp:FileUpload ID="fileUpload" runat="server" />
</div>
</td>
<td class="tdformFieldValueLogin" style="width:350px;padding-left:50px">
<asp:ImageButton ID="btnFileUploadSave" runat="server" ValidationGroup="Save"
ImageUrl="~/App_Themes/Default/images/update.png" ToolTip="Save"
Height="18px" onclick="btnFileUploadSave_Click"/>
<asp:ImageButton ID="btnFileUploadCancel" ImageUrl="~/App_Themes/Default/images/cancel.png"
runat="server" ToolTip="Cancel" Height="18px" />
</td>
</tr>
<tr>
<td>
<div class="formSmallTextAreaName">
<asp:Label ID="lblDescription" runat="server">Description:</asp:Label>
</div>
</td>
<td>
<div class="formSmallTextAreaValue">
<asp:RegularExpressionValidator ID="revNote"
runat="server" ControlToValidate="txtDescription"
ValidationExpression="^[\s\S]{0,4096}$"
Text="Maximum 4096 characters are allowed."
CssClass="Validations" Display="Dynamic">
</asp:RegularExpressionValidator>
<asp:TextBox ID="txtDescription"
runat="server" CssClass="textEntry1"
TextMode="MultiLine" MaxLength="4096" Width="218px">
</asp:TextBox>
</div>
</td>
</tr>
</table>
</div>
</td>
</tr>
CS FILE CODE:
protected void btnFileUploadSave_Click(object sender, ImageClickEventArgs e)
{
string path = Server.MapPath(".") + "\\Files\\" + this.fileUpload.FileName;
string fileExtension = System.IO.Path.GetExtension(this.fileUpload.FileName).ToLower();
if (fileExtension == ".txt" || fileExtension == ".doc" || fileExtension == ".docx" || fileExtension == ".zip" || fileExtension == ".rar" || fileExtension == ".cs" || fileExtension == ".ppt" || fileExtension == ".pdf" || fileExtension == ".html" || fileExtension == ".jpg" || fileExtension == ".gif" || fileExtension == ".bmp" || fileExtension == ".png" || fileExtension == ".tif" || fileExtension == ".rm" || fileExtension == ".mp3" || fileExtension == ".xls")
{
this.fileUpload.PostedFile.SaveAs(path);
}
}
解决方案
If you're putting your UploadControl in an UpdatePanel (Ajax stuff), it won't work by default.
Check out the following link
File Upload in UpdatePanel, ASP.NET AJAX
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