Terroare

In this article I will show you how to display hierarchies in a TreeView control, when your data is in a DataTable. In this example we have an Employee table with 3 columns: ID, ParentID and Name. ParentID is the ID of the boss for the current Employee. The first step is to sort the table by the ParentID . This step is really important because we cannot insert a node in the tree until it's parent is not inserted. Notice the root of the tree having a ParentID of -1. Here is the code for this: The second step is to use a XmlDocument. The TreeView control does not have the functionality to find an arbitrary node given a node ID. A recursive find function seems to be too much hassle, not to mention the performance, so I decided to take advantage of the XPath search capabilities of XmlDocument to find a given Parent node. Here is the code for this: The third step is to hook up our data to the TreeView. If you try to bind the TreeView control to an XmlDocument you w

The Problem Today I had a hard 2 hours, and if you have found this blog post, I bet we are in the same shoes. I was working on a ASP .NET + windows azure project, and I needed the HtmlEditorExtender   control from the Ajax Control Toolkit . I was lucky to find a control for my needs. So far so good. I've installed the toolkit with NuGet Package manager, it added a reference to the assembly to my web.config. I've used the following code where I needed the HtmlEditorExtender: < ajaxToolkit:ToolkitScriptManager runat ="Server" /> < asp:TextBox ID ="txtComments" TextMode ="MultiLine" Columns ="60" Rows ="8" runat ="server" /> < ajaxToolkit:HtmlEditorExtender TargetControlID ="txtComments" runat ="server" /> </ asp:Content > Just to see how this control works. As you can bet ajaxToolkit is the refe