我遇到了一个问题,目前我在我的母版页中有一个更新面板,在我的一个子页面中我有一个 asp 文件上传控件。
我在主页面中的更新面板[年龄:
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:updateprogress associatedupdatepanelid="UpdatePanel1"
id="updateProgress" runat="server">
<progresstemplate>
<div id="processMessage" style=" background-image:url('../../Styles/ajax-loader3.gif'); width:100px; height:100px; background-repeat:no-repeat; background-position:center;">
</div>
</progresstemplate>
</asp:updateprogress>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
<ContentTemplate>
..
</ContentTemplate>
</asp:UpdatePanel>
</form>
我的孩子页面需要文件上传:
<div id="Annoucments" class="ContentDIV">
<h2 class="Tabheader">Annoucments</h2>
<p class="tabdescription">Here you will be able to upload announcements and pictures to be displayed in the login page, below is the current announcement click on update to save the changes that you have made.</p>
<table width = "100%">
<tr>
<td class="Tablabel">Annoucment title:</td> <td class="tableInput" align="left"><asp:TextBox ID="Announcement_TB" runat="server" CssClass="textboxTabs"></asp:TextBox></td>
<td class="Tablabel">Picture/Poster:</td> <td class="tableInput" align="left"><asp:FileUpload ID="Announcement_PIC" runat="server" CssClass="textboxTabsFiles"/></td>
</tr>
<tr>
<td class="Tablabel">Description:</td> <td class="tableInput" align="left"><asp:TextBox ID="Announcement_Desc" CssClass="textboxTabs" runat="server" Rows="3" TextMode="MultiLine"></asp:TextBox></td>
</tr>
<tr><td colspan="4" style="height:10px" id ="BLANK">
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</td></tr>
<tr>
<td colspan="2" align="right"><input type="button" id="Announcement_Update" runat="server" value="Update" class="TabButton" onserverclick="ANNOUNCEMENT_UPDATE_Click" style=" font-size:smaller"/></td><td colspan="2"> <input type="button" ID="ANNOUNCEMENT_Cancel" runat="server" value="Cancel" class="TabButton" style=" font-size:smaller"/></td>
</tr>
</table>
</div>
*当我单击按钮 Announcement_Update 后端代码将被触发以获取我的文件名时,返回的文件名将始终为“”在调试时发现。*