User Controls :: FileUpload Control Loses Its Contents After PostBack
Dec 19, 2012I have gridview. In my griview, i have Fileupload template field.
but, problem is whenever my page get postback fileupload loses its content or selected file.
Similar Messages:
Web Forms :: FileUpload Control Loses Value On Postback?
Sep 11, 2010I'm having a little problem with my file uploading. Does anybody know how to maintain the value in the FileUpload control between server posts?
I have a form which, among other things, uploads a file. I am using an ileUpload control (created dynamically) to let a user browse their PC for a file and then using the SaveAs method to upload the file to the server.When I'm selecting a file and Click on Next button for processing then selected file is lost.
Same is happening with me with HtmlTextArea (dynamically generated) , the problem was that I was not again re-initializing the controls after postback. What I did is re-initialized it in Init method of placeholder (as I have created/placed all dynamic controls in placeholder ).
But this thing is not working for fileupload control. I found solution in one of the forum is that "use hiddenField Control to transfer the selected file from the client to server"but this mechanism will only help to retain the name of file
in a hidden variable and the FileUpload1.PostedFile.SaveAs(filename) will not work bcz of absense of object (fileupload1).
here is code:
[Code]....
I have done almost the same in different test project , it works . I dont know whats wrong?
[Code]....
How to correct this?
Assign Full File Path Of FileUpload In Textbox Control Back To FileUpload On Postback?
Oct 14, 2010I have a FileUpload control in an UpdatePanel and when user select a file, the full file path will will be stored in a hiddenfield, and during postback, i would like to assign the full file path in the hiddenfield back to the FileUpload control textbox, possible to achieve that?
View 1 RepliesForms Data Controls :: LoginView Inside A Gridview Loses Hyperlink After Postback?
Feb 21, 2010I have a gridview with columns 'Edit', 'Delete', 'View Results' and other details. The 'Edit' column opens a modal popup to edit the record. The 'View Result' column is in a login view and this column is only visible to users belonging to the group 'Manager' as below:
[Code]....
When the page is first loaded, the hyperlinks are displayed correctly. however, after editing a record and saving the changes, the 'View Results' column loses the hyperlink.
I tried creating a temp hyperlink column outside a loginview control and this seems to work correctly.
Custom Server Controls :: Custom Control's Children Do Not Persist Contents After Postback
Feb 25, 2011I have created a really simple custom control to render panels into a page. The code is below. When I use my control and add any webcontrol to it, after each page postback the contents of these child controls vanishes.
I must have missed something really simple but run the example to reproduce this. Can anyone please enlighten me as to why the controls are being 'emptied' of their contents, and how I stop this occuring?
Here is the code for the control
[Code]....
And here's how I am using it in a sample page:
[Code]....
[Code]....
Web Forms :: Retain Value In FileUpload Control After Postback?
Mar 27, 2010I have seen many posts here regarding this, but none with a successful solution.I m using a asp.net fileupload control & not the html one.I have various controls on the page, & on a listbox control, listitem selection, page postbacks.So before it, if i had selected a file for upload & page poastbacks, the the file goes off.Now on postback, I have got the filename in a hidden field, but since the Fileupload control doesnt have any setter methods, not able to get how to set the hidden field value & how to set it...
View 2 RepliesRemain Path Of FileUpload Control After Postback?
Sep 30, 2010I have a FileUpload control and a DropDownlist control in an UpdatePanel and when user select a file for the FileUpload control (no upload yet), in the meanwhile the user select an option from the DropDownList control which will cause a postback! Once the page postback, the path selected in the FileUpload control will gone. How can i remain the path in the FileUpload control? File uploading function was working. I hope can remain the path in the FileUpload control during postback.
I have tried the solution below but the "FileUpload1.HasFile" will return false to me.
If Session("FileUpload1") Is Nothing AndAlso Upload.HasFile Then
Session("FileUpload1") = Upload
lblPhotoUploadErr.Text = Upload.FileName
ElseIf Session("FileUpload1") IsNot Nothing AndAlso (Not Upload.HasFile) Then
[Code]....
AJAX :: Retain FileUpload Control Value On PostBack
May 7, 2015I have a grid view which is costomized.I upload a image in this,when i click edit button then give error (Specified cast is not valid.)
<td align="center" rowspan="11" style="width: 130px" valign="top">
<asp:FileUpload ID="FileUpload4" runat="server" Width="100px"
Enabled='<%# bind("imagePath") %>' />
<asp:Label ID="lblimage" runat="server" Text='<%# Bind("imagepath") %>'
Visible="False"></asp:Label>
</td>
Web Forms :: FileUpload Control Does Not Retain Value On Postback
Nov 15, 2011I have a ASP.Net FileUpload control in my page. Once the File is uploaded I want to display the path in FileUpload control
View 1 RepliesUser Controls :: Loose Styles In User Control After Postback?
Oct 16, 2012I'm working on a project in which i added an user control. I put some css effect in it and a also added a dropdown. When i run the application the effects are working but when i change the dropdown values the css effects will lost somehow.
View 1 RepliesFileupload Control Does Not Work Under Update Panel Unless Use Postback Triggers
Apr 29, 2010I 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]....
C# - Assign File To Be Uploaded Path To FileUpload Control After Postback
Mar 16, 2011i hv postback event executing after i am trying to upload a file to server to ask for conformation by the user. after postback fileupload control gets cleared and i am not able to get its value after postback. controls viewstateEnabled property is true. How do i assign a file path to fileupload control after postback.
View 2 RepliesWeb Forms :: FileUpload Control - How To Maintain Client Directory Path On Postback
May 4, 2010I'm using five FileUpload controls on a single web form. Besides allowing the user to upload a file I also am collecting user data. Problem I run into is during the server side validation if any of the user data is invalid on a post back when content it redisplayed the FileUpload controls loose the client url that was selected when browsing. How can I keep that path or set the pathing on the control so they do not have to keep rebrowsing for the files on data validation errors? Right now breaking up the two form sets user data and file upload into two pages is being frowned upon and requirments would like it to be on all one page.
View 1 RepliesAJAX :: Maintain State Of FileUpload Control And Preserve File Across PostBack
May 7, 2015My <input id="FileUpload1" name="FileUpload1" type="file"> and country dropdown both are inside update panel , now on selectedindexchanged it do postback , which i am triggering in update panel to avoid page refresh .
Now the problem is when i select any image in fileupload and then select country , my selectedimage vanishes but its path stays in textbox .
AJAX :: Use FileUpload Control With Partial PostBack To Avoid Page Refresh
May 7, 2015Here is the sample code am trying.
<div>
<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering="true" />
<div>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="conditional">
<Triggers>
<asp:PostBackTrigger ControlID="Button1" />
[Code] ....
This upload is working. But why the page is getting refreshed? this is not partial post back and instead it 's full post back. i have read the articles for the fileuplaod with issue inside the update panel. is there any way to achieve this asynchronous upload on button click?
I don't want to use the Ajaxtoolkit Asyncupload because that will upload (Ref : [URL] ....] the moment when we seelct the file itself which i don't want to do that. i need to do on the button click event.
AJAX :: Remain File Selection In Fileupload Control After Page PostBack?
Apr 27, 2016i have searched on google and got an article [URL] keep selected file in fileupload control even after page postback. But it's not working at all. So is there any way through which we can keep selected files in fileupload even after page postback.?
View 1 RepliesC# - Radio Button Loses Value On Postback?
May 3, 2010I have a set of radio buttons for "yes" and "no" values which have a name="choice". "yes" is checked by default. They're both runat="server". I read the choice on postback like below. It works perfectly fine as long as the validation doesn't fail. For example, if I select "no" and validation fails on postback, I still see "no" selected. But if I submit the form after correcting everything, the value read is "yes" on server side! Is this a bug in .net, and if so, how do i fix this?
foreach (string key in Request.Form.AllKeys)
{
if (key.EndsWith("choice"))
return Request.Form[key] == "yes";
}
Postback - .Net RadioButton Loses ViewState
Apr 13, 2010I'm having trouble with a simple radio set of two radio buttons (I don't want to use a RadioButtonList [RBL] because RBL doesn't allow child controls, and in my case, if you select one option, I want to enable a textbox next to the button; yes you could hack this with jQuery to move the textbox, but that's dirty!). I would check one, submit the form (either explicitly or through AutoPostBack), and the CheckedChanged event would never fire. When the page was reloaded, both buttons would be unchecked, regardless of their initial state on non-postback load or the state before form submission.
form id="form1" runat="server" enableviewstate="true">
<div>
<asp:RadioButton ID="foo" Text="foo" runat="server" AutoPostBack="true" OnCheckedChanged="rbChanged" Checked="true" GroupName="foobar" EnableViewState="true" />
<asp:RadioButton ID="bar" Text="bar" runat="server" AutoPostBack="true" GroupName="foobar"
OnCheckedChanged="rbChanged" Checked="false" EnableViewState="true" />
[code]...
MVC :: RadioButtons Loses Selection On Postback?
Oct 26, 2010If I have a list of radiobuttons like this:
[Code]....
, when submitting the form and return the untyped View again, the selection is lost. What is the best practise to overcome this in MVC?
My submit-action looks like this as I am also passing an uploaded file...
[Code]....
Custom Server Controls :: Custom Radio Button Loses State After Postback?
Mar 24, 2010I have a custom radiobutton and it renders fine but loses state after postback.
How can it be modified?
[Code]....
State Management :: Textbox Loses Its Value After Postback?
Oct 18, 2010There is button(btnOpen) and a textbox (txtResult) in the page.
Once I clicked on btnOpen, a modal dialog will appear, displaying TextBox1 and Button1.
The user is required to type something in TextBox1 and I want to pass the TextBox1.Text into my database but when I try to do that, the value actually = "", which is gone.
So I created this test program to illustrate by passing the value into a txtResult.
Can anyone guide me on getting the TextBox1.Text value?
Besides that, is there anyone to tell more about what does this lines of code do?
[Code]....
The aspx code:
[Code]....
the Code Behind .cs :
[Code]....
.net - User Control's Contents Not Created Or Even Parsed?
Sep 1, 2010I have an ASP.NET 4.0 application with some simple user controls. The user controls work fine on the design surface (VS.NET 2010), but when they're loaded during application execution, nothing shows up.
Furthermore, the various child controls of the user controls are null when referenced inside the code behind for the user control.
The code behind for the user control executes as expected, but any reference to child controls are null.
It's like ASP.NET is never parsing the .ascx to create the instances of the child controls.
Web Forms :: User Control's Contents Not Created?
Jul 9, 2010I have an ASP.NET 4.0 application with some simple user controls. The user controls work fine on the design surface (VS.NET 2010), but when they're loaded during application execution, nothing shows up.
Futhermore, the various child controls of the user controls are null when referenced inside the code behind for the user control.
The code behind for the user control executes as expected, but any reference to child controls are null.
It's like ASP.NET is never parsing the ASCX to create the instances of the child controls.
Web Forms :: Custom RadioButton Loses Checked Value On PostBack?
Jan 28, 2010I am creating a control that inherits from the RadioButton, so that I can set the GroupName property manually. Everything is working okay apart from the fact that when the page posts back, the RadioButton becomes unchecked if it has previously been checked. This is the first time I've tried inheriting from controls, so must be doing something really silly. I would welcome anyone helping me to improve my code so that the control's Checked value persists through postbacks. I am causing a postback using a button, not the actual RadioButton itself, if that makes any difference. Here is my code:
[Code]....
Web Forms :: Visible False Loses Data On Postback?
Feb 1, 2011I have the following simple code:
[Code]....
So when i select "Yes" from the first drop down, the "hiddenDetail" label becomes visible and when i select "No" from q1 the "hiddenDetail" label becomes invisible.The problem is that because i am using AutoPostBack when you select "No" the "hiddenDetail" loses its children (i.e. the label inside it) which is obvious why but i am wondering, is there anyway i can make the "hiddenDetail" invisible (sort of like display:none in style) in VB without losing its children. Or is my only option to work with this in