Programming Tutorials

Change TreeView root node style programmatically The TreeView is an asp.net web server control. The TreeView is located under System.Web.UI.WebControls namespace. TreeView web server control displays hierarchical data. Such as a table of contents in a tree structure. The following asp.net c# tutorial code demonstrates how we can programmatically change the TreeView web server control’s root node style. The asp.net c# developers can set the TreeView root node style using its RootNodeStyle property. The TreeView RootNodeStyle property gets a reference to the TreeNodeStyle object that allows us to set the appearance of the root node in the TreeView control. The TreeView RootNodeStyle property value is TreeNodeStyle which is a reference to the TreeNodeStyle that represents the style of a node in the TreeView. The TreeNodeStyle class represents the style of a node in the TreeView control. The TreeView RootNodeStyle property controls the de...

Change TreeView node style programmatically The TreeView is an asp.net web server control. The TreeView is located under System.Web.UI.WebControls namespace. TreeView web server control displays hierarchical data. Such as a table of contents in a tree structure. The following asp.net c# tutorial code demonstrates how we can programmatically change the TreeView web server control’s node style. The asp.net c# developers can set the TreeView node style using its NodeStyle property. The TreeView NodeStyle property gets a reference to the TreeNodeStyle object that allows us to set the default appearance of the nodes in the TreeView control. The TreeView NodeStyle property value is TreeNodeStyle which is a reference to the TreeNodeStyle that represents the default style of a node in TreeView. The TreeNodeStyle class represents the style of a node in the TreeView control. The TreeView NodeStyle property controls the default appearance of a nod...

TreeView leaf node style programmatically The TreeView is an asp.net web server control. The TreeView is located under System.Web.UI.WebControls namespace. TreeView web server control displays hierarchical data. Such as a table of contents in a tree structure. The following asp.net c# tutorial code demonstrates how we can programmatically change the TreeView web server control’s leaf node style. The asp.net c# developers can set the TreeView leaf node style using its LeafNodeStyle property. The TreeView LeafNodeStyle property gets a reference to the TreeNodeStyle object that allows you to set the appearance of leaf nodes. The TreeView LeafNodeStyle property value is TreeNodeStyle which is a reference to the TreeNodeStyle that represents the style of the leaf nodes in the TreeView. The TreeNodeStyle class represents the style of a node in the TreeView control. The TreeView control allows us to specify different style characteristics such...

Show and hide checkboxes in a TreeView programmatically The TreeView is an asp.net web server control. The TreeView is located under System.Web.UI.WebControls namespace. TreeView web server control displays hierarchical data. Such as a table of contents in a tree structure. The following asp.net c# tutorial code demonstrates how we can show and hide checkboxes in a TreeView control programmatically. The asp.net c# developers can change the checkboxes visibility of a TreeView programmatically using its ShowCheckBoxes property. The TreeView ShowCheckBoxes property gets or sets a value indicating which node types will display a check box in the TreeView control. The ShowCheckBoxes property value is a TreeNodeTypes. The TreeNodeTypes represent the different node types (leaf, parent, and root) in the TreeView control. The TreeView ShowCheckBoxes property value is a bitwise combination of the TreeNodeTypes values. The default is TreeNodeType....

Change TreeView image set programmatically The TreeView is an asp.net web server control. The TreeView is located under System.Web.UI.WebControls namespace. TreeView web server control displays hierarchical data. Such as a table of contents in a tree structure. The following asp.net c# tutorial code demonstrates how we can programmatically change the TreeView image set. The asp.net c# developers can change the image set of a TreeView programmatically using its ImageSet property. The TreeView ImageSet property gets or sets the group of images to use for the TreeView control. The ImageSet property value is one of the TreeViewImageSet values. The default is TreeViewImageSet.Custom. In this asp.net tutorial, we set the TreeView ImageSet property value to TreeViewImageSet.Faq and TreeViewImageSet.Msdn on button click event. The TreeViewImageSet.Faq is a predefined set of FAQ-styled images. And the TreeViewImageSet.Msdn is a predefined set ...

Change TreeView expand depth programmatically The TreeView is an asp.net web server control. The TreeView is located under System.Web.UI.WebControls namespace. TreeView web server control displays hierarchical data. Such as a table of contents in a tree structure. The following asp.net c# tutorial code demonstrates how we can change the TreeView expand depth programmatically. The asp.net c# developers can change the expand depth of a TreeView programmatically using its ExpandDepth property. The TreeView ExpandDepth property gets or sets the number of levels that are expanded when a TreeView control is displayed for the first time. This property value is an Int32 which is the depth to display when the TreeView is initially displayed. The default is -1, which displays all the nodes. The asp.net c# developers need to use the TreeView ExpandDepth property to control the rendering of the TreeView control the first time that it is displayed. ...

Custom images in a TreeView The TreeView is an ASP.NET web server control. The TreeView is located under System.Web.UI.WebControls namespace. TreeView web server control displays hierarchical data. Such as a table of contents in a tree structure. The following ASP.NET C# tutorial code demonstrates how we can use custom images in a TreeView web server control. The asp.net c# developers can alter the appearance of the control to customize the images that are displayed in the TreeView control. The ASP.NET C# developers can specify their own custom set of images for the different parts of the TreeView control by setting the CollapseImageUrl, ExpandImageUrl, LineImagesFolder, and NoExpandImageUrl properties. The TreeView CollapseImageUrl property is the URL to an image displayed for the collapsible node indicator. This image is usually a minus sign (-). The ExpandImageUrl is the URL to an image displayed for the expandable node indicator. Thi...

TreeView Server Control TreeView is an asp.net web server control. TreeView displays hierarchical data such as a table of contents or files directory, in a tree structure. TreeView control is made up of nodes. We can display static data in a TreeView by creating a collection of TreeNode elements as children of the TreeView. We can bind TreeView to a data source such as XmlDataSource and SiteMapDataSource. TreeView can also be bound to an XmlDocument object or a DataSet object. TreeView node types are the parent node, child node, leaf node, and root node. The Parent node contains other nodes. child node is contained by another node and the leaf node have no children node. The root node is not contained by any other node. Node has two properties Text and Value. text property value displayed in the browser and the value property is hidden in the browser and stores any additional data about the node. a node can have one mode selection mode o...