求助：用 C#调用第三方控件 ocx，报错！

平常用 python。因为需要调用第三方控件的方法，摸索着使用 c#，网上关于 ocx 控件的教程很少，举步维艰。希望各位大佬能指点下问题。 C#小白，轻喷谢谢！！！

代码：

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using AxXX;

namespace WindowsFormsControlLibrary2
{
    public partial class UserControl1: UserControl
    {
        public UserControl1()
        {
            InitializeComponent();

        }

        private void UserControl1_Load(object sender, EventArgs e)
        {
            AxXX xx = new AxXX();
            ((System.ComponentModel.ISupportInitialize)(xx)).BeginInit();
            this.Controls.Add(xx);
            ((System.ComponentModel.ISupportInitialize)(xx)).EndInit();
            xx.AddImage("168", "123", 1, 90);            
        }
    }
}

异常：

System.BadImageFormatException
  HResult=0x8007000B
  Message=未能加载文件或程序集“file:///C:\Users\aaronhua\Desktop\dllproject\WindowsFormsControlLibrary2\WindowsFormsControlLibrary2\obj\x86\Debug\WindowsFormsControlLibrary2.dll”或它的某一个依赖项。试图加载格式不正确的程序。
  Source=mscorlib
  StackTrace:
   at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks)