AJAX :: Grid Disappears On Postback?
Feb 21, 2011
I have an asp:UpdatePanel in my .aspx page.Within the panel I have placed an infragistics ultrawebgrid control.Upon clicking a button (placed outside the panel) , I have to export the data in the grid to excel.I am using
UltraWebGridExcelExporter(Infragistics object) for this. The export will occur only with full postback.For this I have added a PostBack tigger for the button to the update panel.But once the export is complete, if I change the selected item in a dropdownlist(Autopostback="true") in the same page,the updatepanel gets invisible.
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May 7, 2015
My combobox and asp:fileupload and imagepreview all are inside update panel , my combobox is doing postback after which my image disappears.... how to retain back image after postback ?
In [URL] .... if I remove input:file and put asp:file then it will be possible ... here's all code:
using System;
using System.Drawing;
using System.IO;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class Default3 : Page
[Code] ....
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Jan 28, 2011
I have a page with an UpdatePanel with a UserControl in it. That UserControl contains a GridView with a nested UserControl that seems to disappear when the parent UserControl is rebound. I cannot for the life of me figure out why the child UserControl disappears. The code works beautifully on the first load, but any partial postback causes the "Pick" UserControl to disappear.
[Code]....
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Jan 23, 2010
I'm binding a dataview to a GridView and am trying to use GridView Paging. When I click on one of the page numbers, the Grid disappears.
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[code]...
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Jan 30, 2010
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Jun 15, 2010
I have a Gridview control with a panel inside a template column and I dynamically add a checkbox control through code to the panel and the checkbox has autopost set. My problem is when I click the checkbox it dissappears on autopost back. I have tried to recreate the control again on the event OnDataBound but when I cast the sender as checkbox I get nothing. How can I not loose my checkbox on postback and why is (Checkbox)sender return nothing.
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Jan 19, 2010
I've coded myself into a state of confusion. I have a form with a postal code TextBox and a country DropDownList both inside an UpdatePanel. When the selected country is changed, the DropDownList auto posts back and sets the regular expression used for validating the postal code. The country DropDownList also has a RequiredFieldValidator. The first item in my DropDownList is empty (Value = Text = String.Empty) and when I select this item, I momentarily see the RequiredFieldValidator appear and then disappear. It seems that the client side script is displaying the error message, but then after my partial postback it disappears. I can see in the country DropDownList's SelectedIndexChanged event handler that the RequiredFieldValidator has IsValid = false, so why doesn't the error message stay visible?
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Apr 4, 2011
I have a link button:
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What am I missing here?
EDIT
This is duplicate of asp.net Link button image not visible after postback.
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Jan 13, 2010
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Oct 1, 2013
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
[code]....
my data in gridview4 disappears when i click add to cart it shows no data again i have to pass a query from gridview 3 and then gridview 4 appears and then again if i click on add to cart in gridview 4 it shows no data.
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Mar 24, 2010
I have a linkbutton inside a updatepanel and when the update panel does a partial page rendering, the linkbutton disappears.
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<asp:ListItem Text="a" Value="a" />
<asp:ListItem Text="b" Value="b" />
<asp:ListItem Text="c" Value="c" />
</asp:DropDownList>
<asp:LinkButton ID="link" Text="abc" runat="server" />
</ContentTemplate>
I think that is because the link button is rendered using a script and that script is not run after the post back.
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Feb 23, 2010
I've got a Gridview in which I use the RowDataBound handler to color the lines according to certain conditions
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Jun 1, 2010
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[Code]....
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I have a page with an AJAX TabContainer and 4 AJAX TabPanels and have Save button. On a button click im calling javascript thats make ajax tab disappear why?
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[Code]....
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[Code]....
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[Code]....
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Anyhow, I don't really want to put the code for the Popup in the Master after the rest of the controls have loaded since its only needed on the one page.
*edit* I added a button and the on_click does the exact same thing it pops up and disappears, I cannot step through the Modal process
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Jan 11, 2011
here is my code
<asp:LinkButton ID="changeStatusLinkButton" runat="server" Text="Change status" />
<ajaxToolkit:ConfirmButtonExtender ID="cofirmButtonExtender" runat="server"
TargetControlID="changeStatusLinkButton"
DisplayModalPopupID="modalPopupExtender" ConfirmText="" Enabled="True" />
<ajaxToolkit:ModalPopupExtender ID="modalPopupExtender" runat="server"
[Code]....
and when I select something in my statusDropDownList, (it has AutoPostBack="true") and my modal popup disappears.
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May 17, 2010
[Code]....
AJAX popup appears and then immediately disappears
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Jan 12, 2010
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</cc1:TabPanel>
<cc1:TabPanel runat="server" ID="TabPanelAdmin" Enabled="true" HeaderText="Admin"
Width="100%">
<ContentTemplate>
<asp:UpdatePanel ID="UpdatePanelAdmin" runat="server" UpdateMode="Conditional">
<Triggers>..........................
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