Panel

import * as React from "react";
import { Panel } from "gd-sprest-react";
import { PrimaryButton } from "office-ui-fabric-react";

class MyPanel extends React.Component<null, null> {
    let _panel:Panel = null;

    // Render the component
    render() {
        return (
            <div>
                <Panel headerText="My Panel" ref={panel => { this._panel = panel; }}>
                </Panel>
                <PrimaryButton
                    text="Show Panel"
                    onClick={this.showPanel}
                />
            </div>
        )
    }

    // Method to show the panel
    private showPanel = (ev: React.MouseEvent<HtmlButtonElement>) => {
        // Prevent postback
        ev.preventDefault();

        // Show the panel
        this._panel.show();
    }
}