![]() Private ControlCollection col_Pages = null Public class TreePageView : CompositeControl Public class TreePage : Panel, INamingContainerĪnd here is the code for TreePageView.cs: using System Here is the code for TreePage.cs: using System However, here is the code for TreePageNode.cs: using System When you then select an arbitrary node, you get this exception: When the variable crash is set to true, another node called "Evil node" is added to the tree in the Page_LoadComplete event. When the variable crash is set to false, you can select any node and on the right you see "This is an Employer" or "This is a Car", respectively. When this variable is set to true, the application exits with an exception described below whenever an arbitrary node in the tree is selected. Here you can see the member variable "crash". Protected void Page_LoadComplete(object snd, EventArgs evt) Protected void Page_Load(object snd, EventArgs evt) Private static bool crash = true // if this is true, we crash when a node is selected Here is the code behind for this page: using System The Pages section contains one page for the type "emp" and one page for the type "car". The persons belong to the type "emp", which means "employer", while the cars belong to the type "car", which means "car". There are some persons and some cars in the tree. The Nodes section contains the tree nodes. Here we have such a TreePageView, with a "Nodes" section and a "Pages" section. I want to declare this with the following markup: This control should be called a "TreePageView" the tree nodes are called "TreePageNode" the pages are called "TreePage". For each type there is a corresponding "page", which should be displayed in the MultiView when a node with the corresponding I want one control that has a TreeView to the left and a MultiView to the right. Iīelieve that it could not be much smaller. I swear, I did a really hard work to extract the problem from my real-life project and reduce it to a minimal example. I already made experience with some custom controls, but this one has some specific difficulties. Now it is possible to add your customized ContextMenu Items to the menu.I need help with a custom control. Nodes can be dragged and dropped across trees. Drag & Drop Between (or Even Among) Trees HtmlGenericControl ulRoot = new HtmlGenericControl( " ul" ) Ī( ulRoot, root, false ) Ī tree node can be a hyper-link or LinkButton to perform postback.ĪSDropDownTree inherits ASTreeView, looks like a DropDownList, multi-selection and single-selection are available by the control's configuration. ( new KeyValuePair( " onclick", " return false " ) ) ( base.NorthWindConnectionString, CommandType.Text, sql ) ĪSTreeViewNode root = new ASTreeViewNode( " root" ) ĪSTreeViewLinkNode node = new ASTreeViewLinkNode , max + 1, addNodeText.Replace( " '", " ''" ), parentNodeValue ) String toConsole = string.Format( " >OnCheckedNodeChanged checked: ( object src, ASTreeViewNodeCheckedEventArgs e ) Protected void astvMyTree_OnCheckedNodeChanged OnSelectedNodeChanged and OnCheckedNodeChanged are available. Or developer can create ASTreeViewNode and append to the tree in the code. Multi-data Source SupportedĪ developer can bind different types of data source (currently astreeview supports datatable and XML datasource). Tree Node Context MenuĪ user can use context menu to edit/delete node by right clicking the node. Three-state (checked, unchecked, half-checked) checkbox is available. The developer can specify customized icon for each node, use default node icon, or, disable node icon. Protected void btnToggleContextMenu_Click( object sender, EventArgs e ) Protected void btnToggleDefaultNodeIcon_Click( object sender, EventArgs e ) Protected void btnToggleCheckbox_Click( object sender, EventArgs e ) Protected void btnToggleNodeIcon_Click( object sender, EventArgs e ) Protected void btnToggleTreeLines_Click( object sender, EventArgs e ) Protected void btnToggleDragDrop_Click( object sender, EventArgs e ) User can drag & drop nodes within the tree or even among trees! Here are functionalities ASTreeView supports: 1. I registered a domain name for astreeview. I host the project on Google Code: please download the assembly and the demo, check out the demo, and use ASTreeView in your project! Updated ASTreeView is compatible with ASP.NET 2.0 and above.ĪSTreeView is FREE! That means you can use it anywhere! The demo project is a Visual Studio 2005 project. PM> Install-Package ASTreeView.Legacy IntroductionĪSTreeView is a full functional treeview control for ASP.NET with drag drop, Ajax loading, context menu, XML import/export, checkbox, selection, adding/editing/deleting nodes with Ajax.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |