DataSource Controls :: Programmatically Databinding Treeview Vs Sitemapdatasource
Nov 12, 2010
somewhere on the net I found very useful example of programatically databainding the treeview control (code blow). I use this treeview as menu bar in my masterpage. It works fine but with one exception: when I click the node of this treeview I'm redirected to the correct page but after page is reloaded my treeview is collapsed and node I chose just before is not highlighted. What to do to correct this problem. Do you know better examples of programatically databainding of the treeview control? Maybe it will be better to bind data to the sitemapdatasource and next to the treeview. Then I shouldn't have to worried about this?
I was wondering what would be the best pratice to databind a gridview programmatically.Normally i put my databind code in the page_load() but is there a way to reduce the number of times the databind method is called?I mean... the page_load() method seem to be called a lots of times when doing callbacks with the grid.
When the URL is ~/Folder/File.aspx#Anchor1, I want "Section1" to be automatically selected in the TreeView. However, "Aspx Page" is always displayed no matter what the anchor is. Do I have to override SiteMapDataSource, create a new SiteMapProvider, or is there an easier way to do this? When binding a TreeView to a SiteMapDataSource,
I have a Default.aspx program that contains a Treeview with a SiteMapDataSource. I also have a web.sitemap loaded up with urls. When I run the deafult app I get the tree layout that matches the numbers of options but no text on any of the options to click.
I'm following a tutorial from [URL] to create a better menu with submenus. Does anyone know how to convert this inline code to code behind? I'm not a big fan of inline code but I have no idea on how to convert it to code behind.
I have a treeview on the left panel and the gridview in the content page. Both the treeview and the gridview bind to the same datasource and have the same functionality. For instance, clicking employer in the treeview and clicking the employer link in the gridview take you to the same page. All I want is when I click the employer link in the gridview, I want the gridview row command event to call the selectednodechanged event of the treeview, so that the treenode for employer has the selected node style and performs the function of hte selectednodechanged. i have tried treeview.nodes[0].select but this does not fire the selectednodechanged event.
I have a treeview on an ASP site that I populate from a DB using a Stored Proc that delivers XML. I am using an XML datasource that is loaded from the SP programmatically in the dadtasource's onload handler (if there is a way to load it from an SP declaratively, let me know). The treeview has its 'ShowCheckboxes' property set to "Leaf" (see code below) so that any leaf node can be checked.
The problem is this - I have a 'Checked' attribute in the leaf nodes of the XML (see below) that I would like to have databound to the treeview (I have databound the Name and ID attributes successfully) and I can't seem to find a way to do this. I also tried programmatically, but the treenode's dataitem property seems to have the value 'Nothing' even after the tree is databound.
How do I bind the 'Checked' attribute to the treeview's checkboxes? (Prefereably declaratively)
Example of XML here:
[Code]....
Note that nodes have Name and ID attributes, and Leaf nodes have Chacked attribute.
I have a gridview on a page and based on the row selected I need to fill out a form view (dynamic data enabled) from a linqdatasource. On gridview_sleectedindexchanged I create the linqdatasource and set it as the datasource for the formview. It displays nicely but clicking update returns a "Could not determine a MetaTable" error for the datasource mapped.
THe goal is to create a single page that allows users to select a row then get the appropriate data, create an updateable formview so further edits can be done. Do not want to scaffold.
I have a page called Page2.aspx and it is called by another page called Page1.aspx and Page1.aspx passes two parameters namely: Name and Category to Page2.aspx. Does anyone know why the following code from Page2.aspx is not working and it keeps giving an error message as follows: " You have declare the parameter @Username".
I need to execute a stored procedure which is a simple delete (record) query. Programmaticaly, I want to pass in a parameter "ID1".
Assume I will pass in the ID1 parameter on a delete link click event froma GridView control. What would the code be to execute the existing stored procedure?
ID1 - the parameter and primary key of the source database for the record to be deleted
GridView1 - the GridView control
spDeleteRecord - the stored procedure needing the parameter ID1 and to be executed from C# code
DeleteTableAdapter - an existing TableAdapter for the existing
I have a collection of objects I bind to a Listview like this:
if (!IsPostBack) { List<Equipment> persons = new List<Equipment> {new Equipment{ItemName = "Sworn", ItemCount = 7, ItemCost = 255}, [code]....
I want to Add/update/delete from this object collection and submit the final data object collection to the BL when the user saves... Rather than just delete/add/update everytime a row is changed.So my question is how do I maintain state for that datasource? I have tried this (delete example)
But it does nothing. I can't rebind it to the datasrouce because at this point the datasource is null.. I assume the listview keeps its own view state which contains the data?... I guess worse case I can always hold the Object Collection in a Session object.. ..
In My code behind I want to provide the SiteMapProvider instead of having it hard coded from the aspx page. What would the code look like to replace in thie case 'SpanishSiteMap' and have that come from code behind in c#? I thought something like this but i know this is way off. hopefully someone has a one liner code that will give provide some sleep. I've come closer to a working code. this is what i have... but get the error mentioned below.
MasterPage myMasterPage = (MasterPage) this.Master; // do a find control on myMasterPage and find the siteMapDataSource SiteMapDataSource mySiteMapDataSource = (SiteMapDataSource)myMasterPage.FindControl("MenuSiteMap"); // now u have the reference to the siteMapDataSource used in the master page how do I set the provider.. mySiteMapDataSource.Provider = "SpanishSiteMap";
Error: Cannot implicitly convert type 'string' to 'System.Web.SiteMapProvider'
I have been looking for a answer but could not find one that I could understand (I am not a pro, far from this...). I have a menu and a sitemapdatasoure, working fine by now. I would like to show the menu options based on the role of each user. I know it can be done with SQL Server, but I don't have it, I use MySQL.
how can i get site map data from the SiteMapDataSource in codebehind same as i would if i wanted to create a typical dataSet from an XML File?
i want to create a custom menu programmaticaly and already wrote out a site map - i know i can just copy it to an xml file but I want to know if its possible to access it from a SiteMapDataSource like
SiteMapDataSource ds = new SiteMapDataSource();
//iterate through nodes to create custom controls, etc...
The drop down list is used to determine what search criteria will be used to find an invoice. I tried to set the Select method in the switch statement. I don't understand how to set the Select Method and the select parameters programmatically though . I tried a few different ways but can't make the compiler happy. My ODS is in scope in the code behind. I'm not able to access it's properties though. The BAL resides in a separate project that is a ClassLibrary. I also have a using statement for the ClassLibrary project in the code behind.
Can i create 2 sitemaps in the same application? I tried doing it. When I tried to add a datasource to a treeview, it is showing first site map. Eventhough I wrote sitemapdatasource2, then also it is showing first sitemap contents. How can I solve this?
I've managed to render TreeView using custom made Hierarchical Datasource based on Linq queries on self referencing table. Rendered output looks well but... Every Node in NodeCollection has the same index = 0. Therefore when I click on any collapse button - the whole tree Collapses. In generated html every node has the same id = MainContent_TreeView1n0 I suppose n0 should increment to n1 n2 n3 and so on.
