如何使用xamarin ios在instagram中分享文本和链接？

using System;
using UIKit;
using Foundation;

namespace YourNamespace
{
    public partial class ViewController : UIViewController
    {
        public ViewController (IntPtr handle) : base (handle)
        {
        }

        public override void ViewDidLoad ()
        {
            base.ViewDidLoad ();

            // 创建一个分享按钮
            UIButton shareButton = new UIButton(UIButtonType.System);
            shareButton.Frame = new CoreGraphics.CGRect(50, 50, 200, 50);
            shareButton.SetTitle("Share to Instagram", UIControlState.Normal);
            shareButton.TouchUpInside += ShareButton_TouchUpInside;

            View.AddSubview(shareButton);
        }

        void ShareButton_TouchUpInside(object sender, EventArgs e)
        {
            // 要分享的文本和链接
            string textToShare = "Check out this link!";
            string urlToShare = "https://www.example.com";

            // 创建一个包含文本和链接的NSArray
            NSObject[] activityItems = new NSObject[] { new NSString(textToShare), NSUrl.FromString(urlToShare) };

            // 创建UIActivityViewController
            UIActivityViewController activityViewController = new UIActivityViewController(activityItems, null);

            // 排除不需要的活动类型（可选）
            activityViewController.ExcludedActivityTypes = new NSString[] {
                UIActivityType.AssignToContact,
                UIActivityType.SaveToCameraRoll,
                UIActivityType.AddToReadingList,
                UIActivityType.Print
            };

            // 显示UIActivityViewController
            PresentViewController(activityViewController, true, null);
        }
    }
}