Hi Danial,

If your node is displaying columns, then the Image property on the node appearance will not work. Node images are only supported for Standard-style nodes that are just showing a string. To add images to a grid-style node with columns, you have to put the image inside a column. So you could add a column to your ColumnSet and display the image in the cell.

Hi Mike,

In the process of putting together a simple project outlining my problem, i found a few bugs in my code! :-)

So now using ViewStyle = Standard, i get pretty much what i'm looking for.  The only minor problem remaining is the icon images are not appearing next to the nodes despite being setup in the columnsets. If i change ViewStyle = FreeForm then the icons appear.  BUT the problem with ViewStyle = FreeForm is that the columns are cutting off the text. i.e Not Auto Sizing.

I can get around this by changing ViewStyle back to Standard and checking the object type in the InitializeDataNode and setting the node image from there, but it would be nice to know how to auto size the columns in FreeForm.  Is this possible?

Thanks

Danial

Hi Danial,

dannyh246 said:

In the code i originally posted for the class definition for OfflineFolder both lists are null as you point out...however in the full version of the code, OfflineFiles is set to a new empty list, but OfflineFolder is set to null. The reason for this was, as it has a child object of itself i was worried about it recursively generating new instances when i instantiate the object?? Or do i not need to worry about that?....I guess i can test that part out.

This is not a big concern. The tree only creates 2 levels initially - the root level and then one level down.

dannyh246 said:

In the full application, on the left hand side of the screen i want to show a tree bound to the ParentList object, this is where i want the offlinefiles hidden, but on the right hand side i want to show another tree that is bound to the OfflineFolder they clicken on from the left. So i dont think i can use the [Browsable = False] attribute as it will then be hidden in the tree on the right.

Okay, that makes sense.

dannyh246 said:

How do you get the NodeText to be the objects FriendlyName property? When i use ViewStyle = Standard, and i set the NodeTextColumn to be FriendlyName, it works for the first level, but further levels down the tree revert back to showing ActualName.

If you are allowing the tree to automatically create the ColumnSet, then there will be a new ColumnSet for each level of the data that has a different name. So it may be a new ColumnSet on every level or it might just be two ColumnSets: one for the root and one for all of the child bands. So the way to handle this it so trap the ColumnSetGenerated event and make sure you set the NodeTextColumn on all of the ColumnSets that are applied to that band at every level. 

dannyh246 said:

I cant work out which ViewStyle would be best. By using standard i've got it to look the closest to what i'm after, but still i need to work out how to hide OfflineFiles, hide the column header for OfflineFolder (but still show the actual folders themselves), and get lower levels to show FriendlyName property.

If i use ViewStyle = Default, before i even get started the text of the nodes get cut off, and despite setting various resize options i cant seem to get the columns to resize.

I'm having a really hard time envisioning what you want and imagining how this data source matches up to it. Could you create a small sample project using a true representation of your data source with some fake data in it and bind it to a tree control in a sample project and post it here? Then I could play around with it and see what's actually happening and help you achieve what you want.

Hi Mike,

Thanks for the response.

No, im actually binding to an object something like below. (I left it out to try and simplify.)

public class ParentList
{
private BindingList<Workstation> _workstationList = new BindingList<Workstation>();
private BindingList<SQLServer> _sqlServerList = new BindingList<SQLServer>();
private BindingList<OffLineFolder> _offlineFolderList = new BindingList<OffLineFolder>();

public BindingList<Workstation> Workstations
{
get
{
return _workstationList;
}
}

public BindingList<SQLServer> SQLServers
{
get
{
return _sqlServerList;
}
}

public BindingList<OffLineFolder> OfflineFolders
{
get
{
return _offlineFolderList;
}
}
}

In the code i originally posted for the class definition for OfflineFolder both lists are null as you point out...however in the full version of the code, OfflineFiles is set to a new empty list, but OfflineFolder is set to null. The reason for this was, as it has a child object of itself i was worried about it recursively generating new instances when i instantiate the object?? Or do i not need to worry about that?....I guess i can test that part out.

In the full application, on the left hand side of the screen i want to show a tree bound to the ParentList object, this is where i want the offlinefiles hidden, but on the right hand side i want to show another tree that is bound to the OfflineFolder they clicken on from the left. So i dont think i can use the [Browsable = False] attribute as it will then be hidden in the tree on the right.

How do you get the NodeText to be the objects FriendlyName property? When i use ViewStyle = Standard, and i set the NodeTextColumn to be FriendlyName, it works for the first level, but further levels down the tree revert back to showing ActualName.

I cant work out which ViewStyle would be best. By using standard i've got it to look the closest to what i'm after, but still i need to work out how to hide OfflineFiles, hide the column header for OfflineFolder (but still show the actual folders themselves), and get lower levels to show FriendlyName property.

If i use ViewStyle = Default, before i even get started the text of the nodes get cut off, and despite setting various resize options i cant seem to get the columns to resize.

Whichever way i go, i can't seem to get things to look how i want.

Thanks

Danial