WinForms Data Grid - Implement a serializable property for the grid column

Important

This example uses internal APIs that may change in newer versions.

The VisibleIndex property returns -1 if a column is hidden. This example demonstrates how to implement a serializable property that stores the visible index of a column before the column is hidden. This allows you to save and restore the position of hidden columns when saving/loading the grid layout.

Implementation Details

• Create a GridColumn descendant (MyGridColumn).

• Implement a new property and apply the XtraSerializableAttribute attribute:

  private int oldVisibleIndex = -1;
  [XtraSerializableProperty, XtraSerializablePropertyId(LayoutIdLayout)]
  public int OldVisibleIndex {
      get { return oldVisibleIndex; }
      set {
          if (value == -1) return;
          oldVisibleIndex = value; 
      }
  }

Files to Review

• Grid.cs (VB: Grid.vb)

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