![]() ![]() GrandchildTreeNode.NavigateUrl = level3DataRow("NavigateURL").ToString()Ĭ locating page elements, sometimes it is necessary to locate its adjacent elements/sibling elements, or locate the sibling elements of its parent element (or the child elements of the uncle element) according to the characteristics of an element. GrandchildTreeNode.Text = level3DataRow("Category").ToString() TreeNode.NavigateUrl = level1DataRow("NavigateURL").ToString()ĭim level2DataRows As DataRow() = level1DataRow.GetChildRows("ChildRows")įor Each level2DataRow As DataRow In level2DataRowsĭim childTreeNode As TreeNode = New TreeNode()ĬhildTreeNode.Text = level2DataRow("Category").ToString()ĬhildTreeNode.NavigateUrl = level2DataRow("NavigateURL").ToString()ĭim level3DataRows As DataRow() = level2DataRow.GetChildRows("grandChildRows")įor Each level3DataRow As DataRow In level3DataRowsĭim grandchildTreeNode As TreeNode = New TreeNode() TreeNode.Text = level1DataRow("Category").ToString() asp.vb Private Sub GetTreeViewItems()ĭim cs As String = ConfigurationManager.ConnectionStrings("DBConnectionString").ConnectionStringĭim con As SqlConnection = New SqlConnection(cs)ĭim da As SqlDataAdapter = New SqlDataAdapter("Manage.spGetTreeViewItems", con)ĭa.SelectCommand.CommandType = CommandType.StoredProcedureĭs.Relations.Add("ChildRows", ds.Tables(0).Columns("ID"), ds.Tables(1).Columns("ParentId"))ĭs.Relations.Add("grandChildRows", ds.Tables(1).Columns("ID"), ds.Tables(2).Columns("ParentId"))įor Each level1DataRow As DataRow In ds.Tables(0).Rowsĭim treeNode As TreeNode = New TreeNode() There is a Private Sub code for getting treeview items from the sql database.Īnd if I remove all the style and only using this and it's still not working. Possibly I have to edit somewhere else since it is with SQL connection? Also, under the. ParentNodeStyle-BackColor = "Green"īut this treeview is connected with the SQL server and is working properly because when I click on edit Node, everything is empty. I also was able to change the back color for Root, Parent, and Leaf, but I can't figure out why Selected Node Style doesn't do anything. I did try to add this but is not working. This treeview is located in a new page but with a URL redirect from Home Page. ![]() I'm not using this for master page navigation. The nodeinfo label is just to display some values for debugging. Nodeinfo.Text = "No node match for " + pagename įor (int i = 0 i < tn.ChildNodes.Count i++) String pagename = System.IO.Path.GetFileName() protected void Page_Load(object sender, EventArgs e) This goes in the master page's code behind file. Sample treeview with some navigation, in the Master page: Ĭode to open the treeview to the current page, if the current page is in the treeview navigation. Unique Value assigned to all nodes in the path to a navigation leaf, and for the leaf node itself. If this is navigation in a master page, you need to iterate through the nodes on pageload, find the node with a navigation value that contains the current page, get the valuepath of that node, then iterate from the top down through the segments of the valuepathĪnd expand them, then (since I find that navigation and other treeview styles can take precedence over the selectednode style), explicitly style the node for the current page. ![]()
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