R – ASP.Net – Tree view control

asp.nettreeview

I am using visual basic for coding. I drag & dropped a tree view control and edited its nodes.
Now when I run my page I get this error->

Control 'TreeView1' of type 'TreeView' must be placed inside a form tag with runat=server.

In the source I have the following entry

asp:TreeView ID="TreeView1" runat="server" Height="155px" Style="z-index: 100; left: 41px;
position: absolute; top: 108px" Width="1px" ImageSet="Contacts" NodeIndent="10"

Best Answer

Just place a form on the page:

so just inside the body tags add:

<body>
<form id="MainForm" runat="server">

... your form controls, including the treeview

</form>
</body>

Related Solutions

R – How to change the 259 char limit inside WinForms Treeview LabelEdit

I would recommend taking a different approach. You probably don't want to show your users all 10000 or characters of a document anyway in their TreeNode, so create an custom data storage class with properties like Name and Content to store the document and it's title. Add your content to the Content property and a title or something meaningful to the Name property then add the object to the Tag property of the TreeNode object.

Dim mynode As New TreeNode
Dim SomeBigCustomObject as New MyContentStorageObject(name,content)
mynode.Text = SomeBigCustomObject.Name
mynode.Tag = SomeBigCustomObject
TreeView1.Nodes.Add(mynode)

You can then get the object back when a node is selected (using the AfterSelect event) like this:

dim ContentStorageObject As MyContentStorageObject = CType(e.Node.Tag,   MyContentStorageObject)
dim content as string = ContentStorageObject.Content

If you need to edit the text, I would then either pop up a editor dialog or send the data that is stored in Content to an textbox on your form for editing. Your users will probably appreciate not having to type it all in the treeview node editor.

That's a real quick and dirty explanation, but the essence is "use the .Tag property". Good luck.

Asp.net-mvc – Compile Views in ASP.NET MVC

From the readme word doc for RC1 (not indexed by google)

ASP.NET Compiler Post-Build Step

Currently, errors within a view file are not detected until run time. To let you detect these errors at compile time, ASP.NET MVC projects now include an MvcBuildViews property, which is disabled by default. To enable this property, open the project file and set the MvcBuildViews property to true, as shown in the following example:

<Project ToolsVersion="3.5" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup>
    <MvcBuildViews>true</MvcBuildViews>
  </PropertyGroup>

Note Enabling this feature adds some overhead to the build time.

You can update projects that were created with previous releases of MVC to include build-time validation of views by performing the following steps:

Open the project file in a text editor.
Add the following element under the top-most <PropertyGroup> element: <MvcBuildViews>true</MvcBuildViews>
At the end of the project file, uncomment the <Target Name="AfterBuild"> element and modify it to match the following:

<Target Name="AfterBuild" Condition="'$(MvcBuildViews)'=='true'">
    <AspNetCompiler VirtualPath="temp" PhysicalPath="$(ProjectDir)\..\$(ProjectName)" />
</Target>

Best Answer

Related Solutions

R – How to change the 259 char limit inside WinForms Treeview LabelEdit

Asp.net-mvc – Compile Views in ASP.NET MVC

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