FileUpload clears on Insert

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TD is PSP - 20 Apr 2008 21:58 GMT

I have a FileUpload control within a FormView (although I tried it outside
the FormView and got the same result) in the InsertTemplate. When the
<Insert> button is clicked and the Insert Command is executed the FileUpload
is cleared of it's value and hence during Insert there is no file to
"insert". I even tried this with a separate button that was both inside and
outside the form view and not connected to the Insert Command, and still the
FileUpload get's cleared.

How can I either stop the value from being cleared or what should I do
differently to accomplish the same result?

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Alexey Smirnov - 20 Apr 2008 22:40 GMT

> I have a FileUpload control within a FormView (although I tried it outside
> the FormView and got the same result) in the InsertTemplate. When the
[quoted text clipped - 6 lines]
> How can I either stop the value from being cleared or what should I do
> differently to accomplish the same result?

Your button causes a postback and the FileUpload Control lost its
value. To solve this, you could use the UpdatePanel and wrap that
around the controls that are causing the postback.

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TD is PSP - 20 Apr 2008 22:55 GMT

> Your button causes a postback and the FileUpload Control lost its
> value. To solve this, you could use the UpdatePanel and wrap that
> around the controls that are causing the postback.

Actually the FormView is already in an UpdatePanel. Here's the code:

<%@ Page Language="C#" MasterPageFile="~/EMFT.Master" AutoEventWireup="true"
CodeBehind="PublicUpload.aspx.cs" Inherits="EMailFileTransfer.PublicUpload"
Title="EMail File Transfer - Public Upload" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1"
runat="server">
<asp:ScriptManager ID="smUpload" runat="server"/>
<asp:UpdateProgress ID="uprUpload" runat="server"
AssociatedUpdatePanelID="upUpload">
<ProgressTemplate>
File transfer in Progress . . .
</ProgressTemplate>
</asp:UpdateProgress>
<asp:UpdatePanel ID="upUpload" runat="server">
<ContentTemplate>
<table>
</table>
<asp:FormView id="fvTFiles" runat="server"
DataSourceID="dsTFiles" DataKeyNames="biID" DefaultMode="Insert">
<InsertItemTemplate>
<table cellpadding="5">
<tr>
<td>From</td>
<td><asp:TextBox ID="tbFrom" runat="server"
Width="300px"></asp:TextBox></td>
</tr>
<tr>
<td>From EMail (also for confirmation email)</td>
<td><asp:TextBox ID="tbFromEMail" runat="server"
Width="300px"></asp:TextBox></td>
</tr>
<tr>
<td>Send To</td>
<td><asp:DropDownList id="dlSendTo"
runat="server" Width="300px" DataTextField="sName" DataSourceID="dsTUsers"
DataValueField="sUserName" /></td>
</tr>
<tr>
<td>File Title</td>
<td><asp:TextBox id="sFileTitleTextBox"
runat="server" Text='<%# Bind("sFileTitle") %>'></asp:TextBox></td>
</tr>
<tr>
<td>Select File<br />
<asp:RequiredFieldValidator ID="rfvUpload"
runat="server" ControlToValidate="fuUpload"

ErrorMessage="RequiredFieldValidator">You must select a file to
upload.</asp:RequiredFieldValidator></td>
<td><asp:FileUpload id="fuUpload" runat="server"
Width="661px"></asp:FileUpload></td>
</tr>
<tr>
<td><asp:Button id="bUpload" runat="server"
Text="Upload" CausesValidation="true" CommandName="Insert"
OnClick="bUpload_Click"></asp:Button></td>
<td>
</td>
</tr>
</table>
</InsertItemTemplate>
</asp:FormView>
<asp:SqlDataSource id="dsTFiles" runat="server"
ConnectionString="<%$ ConnectionStrings:EMailFileTransferConnectionString %>"
SelectCommandType="StoredProcedure" SelectCommand="spTFilesSelectByUserName"
InsertCommandType="StoredProcedure"
InsertCommand="spTFilesInsertWithUserName" OnInserting="dsTFiles_Inserting"
OnInserted="dsTFiles_Inserted">
<SelectParameters>
<asp:Parameter Type="String" Name="sUserName"
DefaultValue="" />
</SelectParameters>
<InsertParameters>
<asp:Parameter Type="Int64" Direction="InputOutput"
Name="biID"></asp:Parameter>
<asp:Parameter Type="String" Name="sUserName"/>
<asp:Parameter Type="String"
Name="sFileTitle"></asp:Parameter>
<asp:Parameter Type="String"
Name="sFileName"></asp:Parameter>
<asp:Parameter Type="DateTime"
Name="dExpirationDateTime"></asp:Parameter>
<asp:Parameter Type="String" Direction="InputOutput"
Name="sUserEMail"></asp:Parameter>
<asp:Parameter Type="String" Direction="InputOutput"
Name="sPassword"></asp:Parameter>
</InsertParameters>
</asp:SqlDataSource> <asp:SqlDataSource id="dsTUsers"
runat="server" ConnectionString="<%$
ConnectionStrings:EMailFileTransferConnectionString %>"
SelectCommandType="StoredProcedure"
SelectCommand="spTUsersSelect"></asp:SqlDataSource>
</ContentTemplate>
</asp:UpdatePanel>
</asp:Content>

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Alexey Smirnov - 21 Apr 2008 07:49 GMT

> > Your button causes a postback and the FileUpload Control lost its
> > value. To solve this, you could use the UpdatePanel and wrap that
[quoted text clipped - 96 lines]
> </asp:UpdatePanel>
> </asp:Content>

The FileUpload Control must be out of the UpdatePanel, otherwise it
will be updated once button is clicked. Or, you have to perfom a file
upload when you click on the button.

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marss - 21 Apr 2008 08:52 GMT

Here are a few tips how to use FileUpload within UpdatePanel.
http://marss.co.ua/FileUploadAndUpdatePanel.aspx

Regards,
Mykola

Reply to this Message

Alexey Smirnov - 21 Apr 2008 10:52 GMT

> Here are a few tips how to use FileUpload within UpdatePanel.http://marss.co.ua/FileUploadAndUpdatePanel.aspx
>
> Regards,
> Mykola

I think, his problem is different. His FileUpload Control lost the
text value on a postback. It has nothing to do with an UpdatePanel
because it's a standard behavior of the FileUpload. It does not keep
the value after postback.

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FileUpload clears on Insert

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