asp.net 调用C#写的dll中的方法

<object id="InvokeControl" style="WIDTH: 32px; HEIGHT: 32px;" data="data:application/x-oleobject;"
classid="http://192.168.1.101：80/misumi/MisumiBaseForm.dll#MisumiBaseForm.CSshow">
</object>脚本中调用
 function showDialogMaster()
{
    document.InvokeControl.sUrlHost=document.getElementById("hdUrlHost").value;
    document.InvokeControl.InvokeObject(); --这一行报找不到该属性或方法}这个是C#中MisumiBaseForm.CSshow类中的方法
public string sUrlHost;
public virtual void InvokeObject()
        {
            string str = string.Empty;            try
            {
                try
                {
                    // Dll所在的URL
                    if (assemblyUrl.Equals(string.Empty))
                        return;                }
                catch (Exception exception)
                {
                    MessageBox.Show(exception.Message + ":" + exception.StackTrace);
                }
            }
            catch (Exception exception2)
            {
                throw new Exception(exception2.ToString());
            }
            finally
            {
            }
        }