CompletIT Community Server

hello, 

In runtime I've created/saved 2 themes "Luc_A" and "Luc_B" and I can switch between these 2 themes.
Now I want to change the theme in Visual Basic code.
Something like :

Public Shared Function CompletIT.Windows.DataGridViewExtension.DataGridViewExtension.ChangeTheme(ByVal aDataGridViewControl As System.Windows.Forms.DataGridView, ByVal ThemeName As String)

=> in code
Imports CompletIT.Windows.DataGridViewExtension()


Private m_DGVExtension As DataGridViewExtension = New DataGridViewExtension


Private Sub cmdChangeTheme_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdChangeTheme.Click
   
    m_DGVExtension.ChangeTheme(myDataGridControl, "Luc_B")

End Sub

Is this already possible or a possible future function ?

Greets, Luc

Hi Luc,

Yes, it is possible to change the selected theme for a grid but this functionality is not well tested because it was not meant to be used externally. In next versions we are going to provide a better way for changing a theme using the API.

There are two things you should know to change a theme:

1. You can obtain list of all available themes using the SavedThemes property of DGVEThemesManager class. In order to find a desired theme by name iterate through the collection and check the property SettingsName:
    
   Dim Themes As BindingList(Of DGVENotDataSourceSpecificSettings) = DGVEThemesManager.SavedThemes

2. To change a theme you actually have to copy the theme settings (in your case from theme 'Luc_A' or 'Luc_B') to the settings that are currently applied to the DataGridView control. Bellow you can see the code snippet how to change the theme of a control 'dataGridView' with a selected theme.

   Dim Themes As BindingList(Of DGVENotDataSourceSpecificSettings) = DGVEThemesManager.SavedThemes
   Dim MyTheme As DGVENotDataSourceSpecificSettings = ...'Find the desired theme by name

   'Suspend persistence and event handling
   DataGridViewExtensionComponent.Extension.SuspendPersistenceOfSettingsForDataGridViewControl( dataGridView )
   DataGridViewExtensionComponent.Extension.SuspendEventHandlingOfSettingsForDataGridViewControl( dataGridView )

   'Copy the settings from the theme to the current settings of the grid view control
   MyTheme.CopyTo( DataGridViewExtensionComponent.Extension( dataGridView ).NotDataSourceSpecificSettings )

   'Resume persistence and event handling
   DataGridViewExtensionComponent.Extension.ResumeEventHandlingOfSettingsForDataGridViewControl( dataGridView )
   DataGridViewExtensionComponent.Extension.ResumePersistenceOfSettingsForDataGridViewControl( dataGridView )

   'Force save of the changes
   DataGridViewExtensionComponent.Extension.ForcePersistenceOfSettingsForDataGridViewControl( dataGridView, PersistedSettingsType.All )
   DataGridViewExtensionComponent.Extension.ForceApplyingOfSettingsToDataGridViewControl( dataGridView )

NB! Keep in mind that DataGridView Extension manages the grids when visualized for first time, and if you try to obtain the settings 'DataGridViewExtensionComponent.Extension( dataGridView )' for a grid view control before that moment you will get null(Nothing).

If you have any other questions do not hesitate to ask us.

Yours Sincerely,
Support Team