Customization Form

• Nov 03, 2023
• 4 minutes to read

The Customization Form allows users to customize the layout of rows and categories. To invoke this form, click Row Chooser in the row/category header context menu.

In addition to the default form, the control supports an advanced form. Set the UseAdvancedCustomizationForm property to true to switch to the advanced form. The static UseAdvancedCustomizationForm property allows you to enable the advanced form for all vertical grid controls.

Advanced Customization Form

The advanced customization form supports the following features:

• The forms displays all row and category headers (if their ShowInCustomizationForm property is set to true).
• Row/category headers display check boxes that toggle row/category visibility.
• Users can drag rows/categories between the view and form to show and hide them.
• The search box allows users to locate rows/categories by their captions.
• Users can sort row/category headers.

Related API

Display the Form	The VGridControlBase.ShowCustomization method. The VGridControlBase.ShowCustomizationForm event.
Close the Form	The VGridControlBase.HideCustomization method. The VGridControlBase.HideCustomizationForm event.
Access the Form	VGridControlBase.CustomizationForm
Form Location and Bounds	VGridControlBase.CustomizationFormBounds
Form Sticking	BaseOptionsCustomization.CustomizationFormSnapMode
Hide Columns in the Customization Form	VGridOptionsRow.ShowInCustomizationForm
Filter Search Results	VGridControlBase.CustomizationFormSearch
Process Add and Remove Category Operations	VGridControlBase.CustomizationFormCreatingCategory VGridControlBase.CustomizationFormDeletingCategory
Sort Row/Category Headers	BaseOptionsCustomization.AdvancedCustomizationFormSortMode

Default Customization Form

The default customization form supports the following features:

• The form displays hidden row and category headers.
• Users can drag rows/categories between the view and form to show and hide them.

• Users can click New… and Delete buttons to add and remove categories:

  

Related API

Display the Form	The VGridControlBase.ShowCustomization method. The VGridControlBase.ShowCustomizationForm event.
Close the Form	The VGridControlBase.HideCustomization method. The VGridControlBase.HideCustomizationForm event.
Access the Form	VGridControlBase.CustomizationForm
Form Location and Bounds	VGridControlBase.CustomizationFormBounds
Form Sticking	BaseOptionsCustomization.CustomizationFormSnapMode
Hide Columns in the Customization Form	VGridOptionsRow.ShowInCustomizationForm
Search Box	BaseOptionsCustomization.CustomizationFormSearchBoxVisible
Filter Search Results	VGridControlBase.CustomizationFormSearch
Categories Tab	BaseOptionsCustomization.ShowCategoriesInCustomizationForm
Process Add and Remove Category Operations	VGridControlBase.CustomizationFormCreatingCategory VGridControlBase.CustomizationFormDeletingCategory

Example: Validate a New Category Caption

When users create a new category, they enter the category caption. The example below shows how to check whether a category with the same caption already exists in the grid. If the captions match, the code shows a warning message.

The code enumerates grid categories to compare their captions with the new category caption. Refer to the following help topic for more information on how to enumerate grid rows: Tree Traversal.

C#

using DevExpress.XtraVerticalGrid.Events;

public class RowOperationCategoryCaption : RowOperation {
    private string newCategoryCaption;
    private bool found = false;
    public RowOperationCategoryCaption(string newCaption) {
        this.newCategoryCaption = newCaption;
    }
    public bool Found {
        get { return found; }
    }
    public override void Execute(BaseRow row) {
        // Check if the processed row is a category.
        if (row.XtraRowTypeID != 0) return;
        // Compare the row caption with the entered caption.
        if (row.Properties.Caption == newCategoryCaption) found = true;
    }
   public override bool CanContinueIteration(BaseRow row){
      return !Found;
   }
}

private void vGridControl1_CustomizationFormCreatingCategory(object sender, 
CustomizationFormCreatingCategoryEventArgs e) {
    RowOperationCategoryCaption operation = new RowOperationCategoryCaption(e.Category.Properties.Caption);
    VGridControl vGridControl = sender as VGridControl;
    // Perform the operation.
    vGridControl.RowsIterator.DoOperation(operation);
    // Display a warning message if the match is found.
    if (operation.Found) {
        string messageText = 
            "A category row with the same caption already exists.\r\n" + 
            "Click Yes to modify the new category row caption.\r\n" +
            "Click No to create a new category row with the specified caption.\r\n"+
            "Do you want to enter new caption?";
        DialogResult result = MessageBox.Show(messageText,"Match found",
          MessageBoxButtons.YesNo);
        // Prohibit to create a new row depending on the user choice.
        if (result == DialogResult.Yes) e.CanCreate = false;
    }
}

VB.NET

Imports DevExpress.XtraVerticalGrid.Events

Public Class RowOperationCategoryCaption
    Inherits RowOperation
    Private _newCategoryCaption As String
    Private _found As Boolean = False
    Public Sub New(ByVal NewCaption As String)
        Me._newCategoryCaption = NewCaption
    End Sub

    Public ReadOnly Property Found() As Boolean
        Get
            Return _found
        End Get
    End Property

    Public Overrides Sub Execute(ByVal Row As BaseRow)
        ' Check if the processed row is a category.
        If Row.XtraRowTypeID <> 0 Then Return
        ' Compare the row caption with the entered caption.
        If Row.Properties.Caption = _newCategoryCaption Then _found = True
    End Sub

   Public Overrides Function CanContinueIteration(ByVal row As BaseRow) As Boolean
      Return Not Found
   End Function
End Class

Private Sub VGridControl1_CustomizationFormCreatingCategory(ByVal sender As Object, _
ByVal e As CustomizationFormCreatingCategoryEventArgs) _
Handles VGridControl1.CustomizationFormCreatingCategory
    Dim Operation As New RowOperationCategoryCaption(e.Category.Properties.Caption)
    Dim vGridControl As VGridControl = TryCast(sender, VGridControl)
    ' Perform the operation.
    VGridControl.RowsIterator.DoOperation(Operation)
    ' Display a warning message if the match is found.
    If Operation.Found Then
    Dim MessageText As String = 
      "A category row with the same caption already exists." & Chr(13) & _
      "Click Yes to modify the new category row caption." & Chr(13) & _
      "Click No to create a new category row with the specified caption." & Chr(13) & _
      "Do you want to enter new caption?"
    Dim Result As DialogResult = MessageBox.Show(MessageText, "Match Found", _
      MessageBoxButtons.YesNo)
        ' Prohibit to create a new row depending on the user choice.
        If Result = DialogResult.Yes Then e.CanCreate = False
    End If
End Sub