VS 2005 FileUpload - Can't Use JavaScript, Restriction Placed On By Who Work For
Aug 20, 2010
I have a fileupload in my ASP.net as well as other fields, of which some are mandatory.
If I populate the fileupload with a file and press save, because some of the mandatory fields are missing I stop the save and show an error message. However when the screen refreshes ansd shows the error message I loose the file in fileupload. Is there a way of retaining this?
I can't use JavaScript, restriction placed on by who I work for.
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Dec 27, 2010
I am using Visual Studio 2008 and SQL Server 2005 as my back-end.I saw this topic is already introduced in StackOverflow but I have different question related to this topic.I just want to directly get the file from my server/hard-disk and save it in the database.
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Mar 24, 2010
I have 4 file upload and one upload button.When i have used an update panel then file upload loses it's content.So i have used trigger with postback.But still a progress bar is not displayed?
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Jul 6, 2010
i have a problem with the fileupload, does not save anything
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Jan 21, 2010
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:FileUpload onchange="clickTheButton();" ID="FileUpload1" runat="server" />
</ContentTemplate>
<Triggers>
<asp:AsyncPostBackTrigger ControlID="Button1" />
</Triggers>
</asp:UpdatePanel>
Button 1 is outside the update panel and the javascript that gets run when a user adds a file in the upload box is this:
function clickTheButton() {
document.getElementById('<%= Button1.ClientID %>').click();
}
The problem is simple. FileUpload1.HasFile == false. I don't know why this is, but when I put it in the update panel it ceases to work.
I have seen some other threads on this. But none of them answer why this is happening, they just point to things you can download.
EDIT: Really my main reason for wanting to do this is so that I can get a ..Uploading File.. Tag to pop up while the client is uploading to the server and once it has completed, display it in a datalist. I just cant get the UpdateProgress to work.
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Feb 13, 2011
I'm having a problem with the FileUpload control in ASP.NET. It requires two postbacks to server in order to upload the file. In other words, after I select the file and click upload the page reloads but do nothing. Then I reselect the file and click upload then it works.
In my code I put a check for FileUpload.HasFile and it always fails (return false) on the first postback.
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I use a tabcontrol with 2 tabs. In the second tabpanel as seen in the code I use a Fileuploadcontrol to upload Images from a users computer.
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[Code]....
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Mar 12, 2010
I am uploading an image using the FileUpload control. After I have uploaded the Image to the server and the image is saved there, I am trying to show this image in an ImageBox like in the code.But the image is not shown in the Imagebox. I had this problem for some time but now wonder why the Image isn´t showing in the ImageBox. I have also tried to use the Page_Load event to track the SessionVariable to show the Image but this does not work ?(The file gets uploaded and saved to the specified path anyway, that part works)
[Code]....
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Jul 24, 2012
Following is my html designÂ
<asp:UpdatePanel ID="up1" runat="server"><ContentTemplate>
<asp:FileUpload ID="FileUpload1" runat="server" />
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="upload" />
<asp:Label ID="Label1" runat="server" Text=""></asp:Label>Â Â </ContentTemplate></asp:UpdatePanel>
andÂ
if (FileUpload1.PostedFile !=null) {
//my upload code here....
}
without update panel it works fine.after place all control inside update its not working. How to fix this...
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Jan 23, 2011
I cannot use asyncFileUpload as it has too many restrictions which doesn't meet our requirement.
I'm able to add a updatepanel trigger to force the Button1 to perform a postback. after the file uploaded, I need to use a timer to do different tasks and return messages back to client with the timer. That is all fine.
However, when one upload is finished. I try to do it again. The FileUpload1.HasFile is "false". I don't know why. if I remove the timer, at the second time, the HasFile is "true". I think there must be something in the timer and disable the Button1's postback.
page:
[Code]....
Code:
[Code]....
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Nov 23, 2010
I have a FileUpload Control on the page with validation and it is working smoothly.
Later there is an important demand to have it partially updated so we enclose it with UpdatePanel.
Then problem comes up when user browse file and press upload button, no file is uploaded.
Is it we cannot do partial rendering with FileUploader ?
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Apr 29, 2010
I am using .net 3.5 framework. I have a Tabcontainer inside that I have place asp.net fileupload control which is inside update panel. It's been known fact that fileupload control does not work under update panel unless we use Postback Triggers.
[Code]....
[Code]....
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Jan 27, 2010
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{
System.IO.
Stream iStream =
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int length;// Total bytes to read:
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}
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}
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{
if (iStream !=
null)//Close the file.
iStream.Close();
}
}
}
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