I need to prevent scrolling entire UserControl. Instead I need to fix TextBox and Button at top but scroll GridView. Now it's scrolling entire user control.
Put your Grid View inside an asp:panel like this and keep the rest out of it :
<asp:Panel ScrollBars="Vertical" runat="server" ID="pnlGrid">
<asp:GridView runat="server" ID="Grid1"></asp:GridView>
</asp:Panel>
Regards
and Seriously Guys give the users reason while down-voting
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I'm using the OnTextChange event on a textbox on an ASP.NET page. To have this working I have to put 'AutoPostBack=true'.
The problem is that the textbox is on the bottom of the page, and when the text changes it has to fill another textbox. This is working fine but when the event triggers the page refreshes and jumps to the top of the page, so I always have to scroll down again to see it. (Due to the autopostback)
Is there anything I can do to prevent it to jump to the top of the page?
Use UpdatePanel and put that text box for which u r triggering OnTextChange event in of from ajax extensions and dont forget to include scriptmanager at top of the page
the code goes like this
<asp:UpdatePanel>
<content>
<asp:TextBox runat="server" AutoPostBack="true" OnTextChanged="textbox_textchanged">
</asp:TextBox>
</content>
</asp:UpdatePanel>
In the page_load event write below code.
this.MaintainScrollPositionOnPostBack = true;
Hi I am using an AjaxControlToolkit Calander control. But as per my requirements I have to split the selected date into separate textboxes for date month and year. So I have used a textbox say "textbox1" which have an popupimage button for the ajax control calander.
I make the textBox1 hidden with css and have autopostback set to true. On the text change event I split the date string and put it in separate textboxes as desired.
Everything is working fine except for the positioning of the Calander control. When I hide the main textbox control the calander positions itself on the top left side of the screen and not near the popimage. How can I fix that.
It will surely have an abnormal behavior if you try to attach a calendar control on a hidden TextBox. Instead of hiding the textbox, make it look like hidden but not literally hidden.
for example
<asp:TextBox ID="textBox1" runat="server" style="border:0 none Transparent;margin:0;width:0;background-color:Transparent" ReadOnly="true" />
Thanks to the answer above just a slight modification is needed to make it the correct answer.
<asp:TextBox ID="textBox1" runat="server" style="border:0 none Transparent;margin:0;width:0;background-color:Transparent" />
I have a repeater control that repeats a DevExpress ASPxGridView for every item bound to the repeater. The repeater is contained within an update panel. Events on the page, outside of the UpdatePanel, trigger the UpdatePanel (and subsequently the repeater) to update. All works fine if records are present to bind to the repeater. The repeater renders a grid for each record and all styles look perfect.
If the page initially loads and there are no items to display in the repeater, no grids are rendered (works as intended up until this point). If a record is eventually added and the repeater rebinds (because of the triggered UpdatePanel), the grid styles don't display. If the entire page is refreshed, the grid's styles display perfectly. Keep in mind that I'm using one of the default styles that comes with the grid, so these are being pulled from an AXD and not included in my MasterPage.
A bit too much code to post, but the nuts of the markup looks similar to this:
<asp:UpdatePanel ID="the UpdatePanelInQuestion" runat="server" UpdateMode="Conditional">
<asp:Repeater ID="theRepeaterInQuestion" runat="server" OnItemDataBound="theMethodThatHandlesGridPopulation">
<ItemTemplate>
<dxwgv:ASPxGridView ID="theGridViewInQuestion" runat="server" EnableViewState="false">
<Columns>
...
</Columns>
</ItemTemplate>
</asp:Repeater>
</asp:UpdatePanel>
Any ideas on how to make the styles of the grid display correctly without:
1) Refreshing the entire page instead of triggering.
2) Placing another empty grid on the page with style="display: none;" to force the styles to download.
This problem is caused by the fact that the required scripts for the DX ASP.NET controls are not registered on the page initially. It is possible to register them explicitely via the DevExpress.Web.ASPxClasses.ASPxWebControl.RegisterBaseScript method.
Please check the http://www.devexpress.com/issue=B191046 Support Center ticket regarding this.
I'm using AJAX.Net (3.5) inside a usercontrol.
The usercontrol contains an UpdatePanel, and inside the UpdatePanelthere is a MultiView.
The ScriptManager is included in the page that act as container for the usercontrol.
To switch between views the usercontrol contains a simple button.
When I click it, the View is changed so the old content is hidden and new content is displayed.
My problem is that the content isn't hidden at all.
The view changes and the new content is displayed, but the old one remains on the page.
To isolate the problem, I tried changing the multiview and switching visibility of a simple label, but the behavior is the same.
Any ideas?
oh I understand. It's all right then. The problem is not of Ajax here. It's just you cannot embed something in <table> tags. In this case, you can try something different than the <table> control. Maybe a <div> or something else. I don't know exactly what sort of situation you have. Maybe you explain the result you want to achieve so I can give you some advice.
Regards
It seems that AJAX.Net doesn't work very well if you have part of a table outside the UpdatePanel.
On my control I want to show or hide some rows of a table. I included only the tr and td tags inside the updatepanel.
To reproduce the problem:
<table>
<asp:UpdatePanel ID="UpdatePanel" runat="server">
<ContentTemplate>
<tr>
<td>
<asp:Label ID="lblToShow" runat="server" Text="Label to show" Visible="false" />
<br />
<asp:Label ID="lblToHide" runat="server" Text="Label to hide" />
</td>
</tr>
</ContentTemplate>
</asp:UpdatePanel>
</table>
If you change the visibility using:
lblToShow.Visible = true;
lblToHide.Visible = false;
The text of both labels are shown on the page (lblToHide does not hide)
If you move the table tags inside the UpdatePanel everything works fine.
call
updatepanel.Update()
after you make the changes to your updatepanel
or try
updatepanel.Controls.Clear();
I have 3 different kinds of ajax popups that need to exist across my site. I was hoping that I could simply create a user control for each one and place the panel and modal popup extender inside each one but this doesn't seem to be working. Has anyone tried this before or do you have a recommendation as to how I can avoid duplicate code for each pop up on different pages? Thanks!
Ah I figured out my issue with the User Control I believe.
The ModalPopUpExtender requires the TargetID property to be set otherwise an error occurs. Since this is sitting in a UserControl I just created a dummy link button that doesn't do anything and I set the property visible to false.
<asp:LinkButton ID="lnkBlank" runat="server" Visible="false" />
<asp:Panel ID="plContainer" style="display: none;" runat="server">
Hello?
</asp:Panel>
<cc1:ModalPopupExtender ID="mpe" runat="server"
BehaviorID="test"
TargetControlID="lnkBlank"
PopupControlID="plContainer" />
Apparently it doesn't appreciate that and the moment I set the visible property to true it started working. Not sure what the reasoning is for a TargetID since, I would think, most pop ups could be called from multiple links about the page. Perhaps I'm still not entirely clear on how this control is supposed to be used.
One option would be to write the popups in a asp.net user control (a .ascx page) and include that on the pages you need the popups. Have a public method in the ascx page that will show the popup, and call it from the parent page when you need to. If you already have a script manager on the parent page, you can't have a second one in the ascx page, but other then that there shouldn't be anything that would stop this from working. Hope this helps!
edit: here's what my modal popup extender control looks like...
<cc1:ModalPopupExtender
ID="mpeClassroom"
BackgroundCssCLass="modalBackground"
runat="server"
CancelControlID="lbClose"
OnOkScript="onOk()"
TargetControlID="Button1"
PopupControlID="pnlClassroom">
</cc1:ModalPopupExtender>
in my code behind page, my method just calls mpeClassroom.Show();
The problem with hidden link as TrgetControlID is that; when u set its visibility as false, server doesn't render it as well. PopExtender then cannot find control on the page.
Instead of setting its visibility to false, try to apply a style with display:none. This should work !