新手求教。。。。谁能帮我看看一下ToolStrip空间代码哪错了？

RT
namespace IoolStripDemo
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            this.InitToolStrip(this.toolStrip1);
        }
        private void InitToolStrip(ToolStrip toolStrip)
        {
            toolStrip.CanOverflow = true;
            toolStrip.ShowItemToolTips = true;
            toolStrip.RenderMode = ToolStripRenderMode.System;
            toolStrip.TextDirection = ToolStripTextDirection.Horizontal;            ToolStripLabel LabelStrip = new ToolStripLabel();
            LabelStrip.Text = "输入查找内容";
            LabelStrip.DisplayStyle = ToolStripItemDisplayStyle.Text;
            toolStrip.Items.Add(LabelStrip);
            ToolStripTextBox TextBoxStrip = new ToolStripTextBox();
            TextBoxStrip.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
            TextBoxStrip.AutoCompleteSource = AutoCompleteSource.FileSystemDirectories;
            toolStrip.Items.Add(TextBoxStrip);
            ToolStripButton ButtonStrip = new ToolStripButton();
            ButtonStrip.Text = "查找";
            ButtonStrip.DisplayStyle = ToolStripItemDisplayStyle.ImageAndText;
            ButtonStrip.Image = Image.FromFile("Find.ico");
            toolStrip.Items.Add(ButtonStrip);
            ToolStripSeparator SeparatorStrip = new ToolStripSeparator();
            toolStrip.Items.Add(SeparatorStrip);
            ToolStripDropDownButton DropDownStrip = new ToolStripDropDownButton();
            ToolStripMenuItem item1 = new ToolStripMenuItem();
            item1.Text = "红色";
            ToolStripMenuItem item2 = new ToolStripMenuItem();
            item2.Text = "蓝色";
            ToolStripMenuItem item3 = new ToolStripMenuItem();
            item3.Text = "绿色";
            DropDownStrip.DropDownItems.AddRange(new ToolStripItem[] { item1, item2, item3 });
            DropDownStrip.DisplayStyle = ToolStripItemDisplayStyle.Text;
            DropDownStrip.Text = "选择风格";
            DropDownStrip.Overflow = ToolStripItemOverflow.AsNeeded;
            toolStrip.Items.Add(DropDownStrip);            ToolStripComboBox ComboBoxStrip = new ToolStripComboBox();
            ComboBoxStrip.Items.AddRange(new object[] { "正常查找", "区分大小写" });
            ComboBoxStrip.DropDownStyle = ComboBoxStyle.DropDownList;
            ComboBoxStrip.Overflow = ToolStripItemOverflow.AsNeeded;
            toolStrip.Items.Add(ComboBoxStrip);
        }    }
}