我在Csharp 中添加这句语句总是报错    this.Controls.Add(this.axActUtlType);  
网上时候     this.Controls.Add(this.axActUtlType); //貌似这个控件必须要加到Controls中，不然就会引发异常。 怎么将控件添加加到Controls中了

public partial class Form1 : Form
    {
        private AxActUtlTypeLib.AxActUtlType axActUtlType = null;
        public Form1()
        {
            InitializeComponent();
            this.axActUtlType = new AxActUtlTypeLib.AxActUtlType();
            // ((System.ComponentModel.ISupportInitialize)(this.axActUtlType)).BeginInit();
           this.Controls.Add(this.axActUtlType);       //貌似这个控件必须要加到Controls中，不然就会引发异常。
        }

        private void butconn_Click(object sender, EventArgs e)
        {
            try
            {
                int iStation = Convert.ToInt32(this.txtStationNo.Text.Trim());
                this.axActUtlType.ActLogicalStationNumber = iStation;
                this.axActUtlType.ActPassword = this.txtPassword.Text.Trim();
                int rtn = this.axActUtlType.Open();
                if (rtn == 0)
                {
                   MessageBox.Show("连接成功！");
                  
                }
                else
                {
                    MessageBox.Show("连接失败");
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("未知错误");
            }


也不知道那错了请师傅们指点

using引入相关dll？