Asp.net自定义ajax文件上载程序
我开发了自定义文件上传程序Asp.net自定义ajax文件上载程序,asp.net,ajax,updatepanel,Asp.net,Ajax,Updatepanel,我开发了自定义文件上传程序 <asp:FileUpload runat="server" ID="fuUpload" /> <asp:UpdatePanel runat="server" > <ContentTemplate> <asp:Button ID="btnUpload" runat="server" Text="Upload" CausesValidation="false" OnClick="bt
<asp:FileUpload runat="server" ID="fuUpload" />
<asp:UpdatePanel runat="server" >
<ContentTemplate>
<asp:Button ID="btnUpload" runat="server" Text="Upload" CausesValidation="false"
OnClick="btnUpload_Click" />
<div>
<asp:Label ID="lblError" runat="server" Visible="false" ForeColor="Red" /></div>
<asp:Repeater ID="rptAttachments" runat="server" OnItemCommand="Uploader_ItemCommand">
<ItemTemplate>
<div>
<a href='<%#GetUrl(....) %>'><%#Eval("Filename") %></a> <b>
<asp:LinkButton ID="lnkDelete" runat="server" Text="Удалить" CommandName="DeleteAttachment" CommandArgument='<%#Eval("FileName") %>' /></b>
</div>
</ItemTemplate>
</asp:Repeater>
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="btnUpload" EventName="Click" />
<asp:AsyncPostBackTrigger ControlID="rptAttachments" EventName="ItemCommand" />
</Triggers>
</asp:UpdatePanel>
protected void btnUpload_Click(object sender, EventArgs e)
{
//fuUpload.HasFile == false
if (fuUpload.HasFile && fuUpload.PostedFile != null
&& fuUpload.PostedFile.ContentLength > 0)
{
}
}
受保护的void btnUpload\u单击(对象发送方,事件参数e)
{
//fuUpload.HasFile==false
如果(fuUpload.HasFile&&fuUpload.PostedFile!=null
&&fuUpload.PostedFile.ContentLength>0)
{
}
}
我想知道为什么fuUpload.HasFile
总是等于null
试试这些东西
放入
btnUpload
触发器<代码>纳文的解决方案很好。完全回发的原因是文件上载不适用于异步回发。它适用于回发!我可以不用回发就使用fileUpload吗?没有简单的方法可以做到这一点。但是你总是可以用类似的东西