Forms Data Controls :: How To Find Control In Listview When Using Datapager
Mar 16, 2010
I have a page where I use the ListView and DataPager.My listview is populated as a table where each row has a bit data a dropdownlist with some values and a link button. Now I am trying to pick out the selected value from dropdown list when I kick on my linkbutton. As long as I'm on page one, everything is woriking fine. But if I go to page three then I can not pick out the value I selected in the dropdownlist. I have tried to add a textbox in the listview and then I am able to get the value out I typed into the textbox independent which side I'm on.
Why can I pick out the value from textbox but not the selected value in dropownlist?
Here is a piece of my code:
[Code]....
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Sep 25, 2010
I've been trying to marry up the listview and the Data pager with my own, Database class that pulls the information from the database.
I can display the information ok no problem, fortunately this time I know what the problem is, but I cannot figure out a way around the problem.
In my Page_Load event I fill out the listview accordingly:
[Code]....
The problem lies in the postback, I need to figure out a way get the information as to what state the DataPager is in so I could update the Query accordingly.
I know there is a StartRowIndex avaialbe but this does not get updated in the Page_Load event.
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Mar 9, 2011
I'm using a ListView (e.g topListView) with paged rows (using a DataPager). One of the topListView's features is when a user clicks on one of its rows, its SelectedValue property is used to populate a SelectParameter in another SQLDataSource control that populates another ListView (e.g. bottomListView). It's working fine. Even when the webpage first loads, the SelectedValue of first row of the topListView is successfully being used to generate content in the bottomListView.
However, when one of the DataPager's buttons is clicked, the SelectedValue seems to be ignored, and the bottomListView isn't refreshing. And yet, when you click a DataPager button again, it works. basically it's taking TWO clicks of the pager for the SelectedIndex to be read. I've tried assigning the SelectedIndex to 0 in the PagePropertiesChanged and PagePropertiesChanging handlers but no luck (even with calls to bottomListView.DataBind(); and/or SQLDataSource1.DataBind(); after index assignment).
assigning the index seems unecessary though, since top row content is being rendered correctly in a SelectedItemTemplate after clicking any DataPager button. to me that means the SelectedIndex is being set to 0 when the page is being re-rendered.
[Code]....
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Mar 31, 2011
i have a listview to show some data and with it i have a datapager the datapager is used for allowing change pages between products but i have and hyperlink above product image that allow to see the specific product details but the datapager wehn a used clicks to see product details should not be visible because there is no more pages , its a specific product but the datapager should be visible in the other scenario how can i do that?
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Aug 26, 2010
I am having trouble finding how to solve the following issue :
I am using nested listviews to display Sales and Sales details.
The main ListView displays General Information about Sales and the child ListView displays the detailed information about one sale. the child listview is shown only when the user clicks on a link (see included code, DataBind is made on PageLoad) :
ASPX Markup Code :
[Code]....
C# Behind Code :
[Code]....
If I removed the datapager part, I can manage show/hide the child list view on the button click event. but if I want to use the DataPager with the PreRender event handling, the child listview is not longer shown on button click.
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Jan 31, 2011
I've an anchor tag in listview itemtemplate, I'm trying to find that control in Listview Item databound event with the below snippet
[Code]....
but lnkEdit is always null.
I wonder why it is not able to find the control while I can see it in page view source.
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Jan 17, 2010
I have a objeckt :
class myfam
-name
-age
-home
I show object data in a viewlist like this:
Name ,age
Hans 32
John 40
Know how can i find out Hans is in my listview ? ...?? Listview.Items.contain("hans").....THIS is not working
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Sep 3, 2010
I want to pass the checked checkboxes value of my listview control to a second page so I can display the listview in this second page with only those selected records
this is what I am have so far , but dont really know how to get it to work the desire way.. Code is working but I am afraid that chekcbox and listview values for my loop are not correct
[Code]....
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Dec 30, 2010
i have a listview. The listview contains a usercontrol with ID="ucEquationBuilder1" which is added only! in the SelectedItemTemplate.I've came along some post which stated you can't find the control in the SelectedItemTemplate unless it is also in the the ItemTemplate.
To me this sounded ridiculous. Untill i ran some tests, and indeed i was able to find all other controls (TextBox's Labels) which where both inside the itemtemplate and the selecteditem template.
To me this is quite frustrating. Is there a way to retrieve the control which is only inside the SelectedItemTemplate without adding it to the itemtemplate?
[Code]....
[Code]....
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Apr 29, 2010
I have a basic list view, in the edit mode I have a dropdown list, and a checkbox, I want it so that if you choose "yes" from the drop down box the check boxs becomes enabled. I know I need to find the control but I keep getting object refrence error with this code.
[Code]....
the listview renders its layout / item template fine but when I click on edit to send it to edit mode it fails to find the dropdownlist ddlQA1YNM which is a bit ironic cause its the ddlQA1YNM that is making the call to ddlQA1YNM_ondatabound. Now it could be with the fact its on the databound stage. Not sure how that plays into the stack. I call ondatabound to determine what the dropdownlist value is and set the enabled status according on the load into edit mode.
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May 18, 2010
I have a listview and a datapager for it c outside of the listview. I would also like to add a datapager in the GroupSeparatorTemplate. I have added it, but when I try to go to the next page of the ListView the page takes a long time to do the postback and, at the end, it doesn't go to the next page.
<div id="paging">
<div>
<span><asp:Label ID="lbl_paging" runat="server" EnableViewState="false"></asp:Label> </span>
<asp:DataPager ID="dpAccommodations" runat="server" PageSize="6" PagedControlID="searchresults" EnableViewState="true" QueryStringField="page">
<Fields>
<asp:NextPreviousPagerField ShowNextPageButton="false" ShowPreviousPageButton="true" ButtonType="Link" PreviousPageText="Prev" NextPageText="Next" RenderDisabledButtonsAsLabels="true" RenderNonBreakingSpacesBetweenControls="false" ButtonCssClass="prev"
/>
<asp:NumericPagerField ButtonType="Link" CurrentPageLabelCssClass="pager" RenderNonBreakingSpacesBetweenControls="false" NumericButtonCssClass="lala"/>
<asp:NextPreviousPagerField ShowNextPageButton="true" ShowPreviousPageButton="false" ButtonType="Link" ButtonCssClass="right on" NextPageText="Next" RenderDisabledButtonsAsLabels="true" RenderNonBreakingSpacesBetweenControls="false"/>
</Fields>
</asp:DataPager>
</div>
</div>.............................
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Jan 30, 2010
I am trying to use the photo_id of a picture whilst a user uses a datapager to select different images. I am also getting the photo_id of the pictures through a label within the listview. However now i need that value so i pull out comments from another table according to this photo_id..
I currently have th following code:-
[Code]....
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Jun 7, 2010
I have a listview where it's content is from a datatable. Programmatically, when the user goes to the webpage, the listview is binded to a datatable like so:
[Code]....
I want to now add a DataPager but this code isn't working:
[Code]....
Clicking on the page numbers either has no response or clears out the listview or distorts the data.
What can I do to make DataPager behave correctly?
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Mar 4, 2011
I have a Listview Control and the paging is implemented using the DataPager control.
I have set the maximum pagesize=5 of the datapager.
But when I click the next or previous buttons it loads the same set of products, no matter how many times I click on the next/previous buttons,
[Code]....
And here is the code behind file
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
[Code]....
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Oct 8, 2010
environment: VWD 2010 Express, SQL 2008 Express, .NET 4.0, VB
I have a page with 4 radio buttons followed by 3 cascading ddl followed by a tab container with 5 tabs. Each tab holds a listview, etc that is particular to the group that has access to that tab. On page load I filter the listview based on who is logged in plus which radio button and DDL is selected - all ok so far.
after the page load, the initial datapager works fine and all other listview functions are fine. However, if I select the 4th radio button, the data returned is correct and the datapager shows as if it knows the correct number of items but if I click the datapager page 2 (or Last, etc) it immediately reloads the correct data as if it were a new page load (and changes the datapager appropriately). My suspicions are that this is due to the declarative select command defaulting to the data that it always goes back to.
I have tried to move the select to the code behind and played with the tabcontainer prerender event. That eventually got me to the point where the datapager was working properly but then I could no longer edit any of the dropdowns in my listview edit screen where I could before. They would go through the motions but as soon as you selected a new dropdown value, it would revert back to whatever it was before.
So at this point I'm looking for ideas on how to make these work together.
the code is excessive so I will avoid that for the moment until I can whittle it down to what is pertinent
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Feb 3, 2011
I want to compose data myself without using any DataSources. I want to display it in ListView. How to implement the DataPager to function properly? I tried implementing PagePropertiesChanged of ListView, but it doesn't work.
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Apr 18, 2010
I have a page (with a master page) with a listview and a datapager on it.The datapager is under the listview in a div element.For some reason, when the page is rendered, the datapager is rendered out side the ContentPlaceHolder of the master page and I get a large space that shouldn't be there.I also have a datapager on my master page. Does it matter?
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Mar 18, 2011
I want in my datapager to have something like displaying (page x of xx). I have done a research and I found this code which in C#.
[Code]....
But the problem is, my site is using VB as the code behind and I don't know how to convert it to VB code.I have tried using [URL] but it does not work.
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Apr 13, 2010
I'm using a datapager control on my listview to perform paging in it.When paging through the table, I need to perform some validations. When these validations are not successfull, the paging should be cancelledI currently perform the validation in the PagePropertiesChanging event of the ListView, however, the arguments do not provide a Cancel property.
[Code]...
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Aug 9, 2010
I have a listview control which is created dynamically, it is nested inside a repeater's itemtemplate. I'm trying to attach a datapager to it, which is also created dynamically but the datapager will not display and the listview will just display all its records in its entirety.
[Code]....
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Jan 6, 2010
There have been a few datapaging questions tonight, but mine is a bit different..
I have a regular datapager, in a seperate project it seemed to work fine with the same query and templates, but when I use it in my page, whenever the I try to page I get the emptydatatemplate when there should be data..
Here is my current ListView
[Code]....
I have tried binding data OnPreRender and setting the page properties under the OnPagePropertyChanging events.. still only getting my empty template whenever i navigate through the pages when there should be plenty of data..
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Aug 20, 2010
When (in what event) is the best time to set PageSize for the ListView's DataPager? I have tried every event on the ListView and either it does not work (i.e., reverts to the default 10) or I get a CRASH of some sort (mostly error 12002) - but that's a different story.
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Oct 18, 2010
I have a ListView that uses an ObjectDataSource
When I add a DataPager control INSIDE the ListView, it works fine and the ListView's PagePropertiesChanging event fires.
When I move the DataPager OUTSIDE the ListView control and set its PagedControlID
to the ListView, it stops working and the ListView's PagePropertiesChanging event no longer fires.
i.e. This works (and the ListView's PagePropertiesChanging fires):
[Code]....
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Feb 21, 2011
I have listviews that I would like to modify the look and feel of the default datapager. How do I do that?
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Feb 17, 2011
I have ListView control on my page, and i bound it to Dictionary<string,DataTable> generic.Now i'm trying to put DataPager on my page to support paging, but DataPager doesn't work properly, in particular, I have to click twice to move to next page, or first few records repeating thru every page. What's the problem, what am I doing wrong? I used ListView control before with ObjectDataSource and it worked just fine. Now I'm using Entity Framework to retrieve data frm Db.
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