WPF功能区,选择ribbontab时更改主要内容

// Get the toolbox panel
ToolboxPanel toolboxPanel = this.toolbox;

// Get the current controls in the toolbox
ToolboxItemCollection toolboxItems = toolboxPanel.ToolboxItems;

// Create a new collection of buttons
ButtonCollection buttonCollection = new ButtonCollection();

// Add buttons to the collection
buttonCollection.Add(new Button { Text = "Button 1", ToolTipText = "Click me" });
buttonCollection.Add(new Button { Text = "Button 2", ToolTipText = "Click me" });
buttonCollection.Add(new Button { Text = "Button 3", ToolTipText = "Click me" });

// Replace the current toolbox items with the button collection
toolboxItems.Clear();
toolboxItems.AddRange(buttonCollection);

// Update the toolbox panel
toolboxPanel.Refresh();