Web Forms :: TreeView With XMLdatasource And Populateondemand
Apr 27, 2010
I am Trying to build a Treeview Control using an XMLDataSource which consumes a XML file (which is set dynamically) . The Problem is that the XML file Size is huge, arround .5 MB so the page load is hit because of this . Now i know that there is a PopulateOndemand Property of the treeview and there is also a populateondemand property of Treenodebinding which is used in XMLDataSource .
I have a TreeView that is bound to a XmlDataSource control. I've added some TreeNodeBinding elements to define how I want the XML data to be shown.
I have also added PopulateOnDemand=true to these TreeNodeBindings. However, doing so didn't change a thing and the entire XML tree is displayed. Moreover, the TreeNodePopulate event is not fired on node expand as well.
have embedded a TreeView inside an Update Panel, PopulateOnDemand in use.When a top level node is expanded everything is fine - the level 1 (zero base) nodes are populated.When on of these lower level nodes is expanded the tree Collapse
I need to place a vertical menu in my application. This should be bind using xml datasource. Also it should support expand/collapse (if any option has child links). Also first node should not be displayed in the menu option.
I have a master page that hosts a user control to load my menus from the database depending on the user logged in.So when ever a user logs in, the menu list corresponding to him is loaded into the XMLDatasource that is the Data source for the menus.Following is the code:
[Code]....
The problem is if I log out as one user and Login as another, the XML Data source is not invalidating the cache... and is loading the same values again ..Further I even noticed that the program flow control is not transfered to the LoadMenus.ascx control at times and the page is loaded with out having to go through the control flow of all the controls on the master page. i am not sure how to force the control to pass through a single control.I have set the EnableCaching to false on the xml data source.
I have a traffic rss feed which I want to filter when a user enters some text in the text box. For example, if the user enters “Leicester” in the search box then only data containing “Leicester” in the “Tile” OR “Desscription” with be displayed.
I have a datalist using an XmlDataSource to source records. The issue is the datalist only shows the first record from the xml file. How do I get the datalist to show the first 10 records from the XmlDataSource?
Periodically a rash of occurrences of the following error happen. I believe they're the result of hack attempts. Whether that's the case or not, my question is how can I handle the error? I want to avoid unhandled exceptions. The TreeView control is just a standard .Net TreeView control, not a custom one. If you suggest a code solution, please code it in VB.Net as that's what I'm using.
Message: Input string was not in a correct format.
Stack Trace: at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal) at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info) at System.Web.UI.WebControls.TreeView.LoadPostData(String postDataKey, NameValueCollection postCollection) at System.Web.UI.WebControls.TreeView.System.Web.UI.IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection) at System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
I have a treeview which will be generated dynamically which need to be displayed on left side and when user clicks on a node it need to open a page on the right side of the same page. and each node has different aspx page. so whenever user selects a node the page details should be displayed on the right side .we can use an iframe on the page which will display the different pages clicked on the node.Is there any alternative i can use to display different pages based on the user selection on the right side without using iframe.
I have this DropDownList bound to a XmlDataSource, but the XPath must depend on another input (another DropDownList). I modify the XPath and rebind inside the parent DDL's SelectedIndexChanged, but the page does not refresh. What should I do to display the update?
I've created an asp:ListView and attached it to an asp:XmlDataSource. I would like to support the delete command for my list, so I've added the following button:
Which one is better for me to store urls of my products images while i was trying to bind images with gridview. provide me some code snippet to bind images to gridview with XMLDataSource.
The issue is that the length of the feed changes regularly and rather than selecting a range of movies with the XPATH (i.e. 1-3 in the XML) I need to select 3 totally random movies from the XML and bind this back to the repeater.
I'm using XmlDataSource as the datasource for a dropdownlist. Now I want to set the SelectedValue of the dropdown when the page initially loads. I tried the OnDataBound event of the dropdown in which I could see the total items but setting the SelectedValue didn't work. In OnDataBinding event, I couldn't even see the total items probably because the list isn't bound yet.
I have a GridView tied to an XmlDataSource to take advantage of the edit/update/delete capabilities GridView inherently offers. XmlDataSource offers no update event handling so that must be performed manually. I have no problem with this. My problem is how/where can I catch this update event to perform my custom handling.
I have a treeview that i fill from a database, when i add a new row to a database, the treeview is not updating.Even the reload of an internet explorer doesn't help, It does updates only after i press stop debugging button and turn it on again.Here is the code:
I am using treeview to display records from 4-5 SQL Tables. Currently I am using 4-5 different stored procedures to retrieve data based on a dropdownlist value.The tree is loaded everytime the value in the dropdownlist is changed by the user.
Is there a faster way to load treeview as everytime a new selection is made, the treeview is binded again. Or is there any way I can optimize the actions I am performing now to bind the treeview?
i would like to add images for a tree view like for root node one image and for child node other like that i would like to add different images for nodes..
I am using Tree view to display Categories & SubCategories under it. It's working fine. to create a Tree View I had used, http://aspalliance.com/732.
Problem is that I want my TreeView to be expanded. How can one do that? Moreover, From another page when I click a Product, I want that in treeView that Category(under which Product falls), should be expanded & node(ie selected Product) should be highlighted.
