真有意思

protected override CreateParams CreateParams
{
    get
    {
        base.Visible = false;
        return base.CreateParams;
    }
}

    /// <summary>
    /// 作者： 三角猫
    /// 网址： http://www.zu14.cn/
    /// 声明： 转载请务必保留原作者信息
    /// </summary>

const uint LVM_FIRST = 0x1000;
const uint HDM_FIRST = 0x1200;
const uint LVM_GETITEMCOUNT = LVM_FIRST + 4;
const uint LVM_GETITEMW = LVM_FIRST + 75;
const uint LVM_GETHEADER = LVM_FIRST + 31;
const uint HDM_GETITEMCOUNT = HDM_FIRST + 0;

[DllImport("user32.DLL")]
static extern int SendMessage(IntPtr hWnd, uint Msg, int wParam, int lParam);
[DllImport("user32.DLL")]
static extern IntPtr FindWindow(string lpszClass, string lpszWindow);
[DllImport("user32.DLL")]
static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);
[DllImport("user32.dll")]
static extern uint GetWindowThreadProcessId(IntPtr hWnd, out uint dwProcessId);

const uint PROCESS_VM_OPERATION = 0x0008;
const uint PROCESS_VM_READ = 0x0010;
const uint PROCESS_VM_WRITE = 0x0020;

[DllImport("kernel32.dll")]
static extern IntPtr OpenProcess(uint dwDesiredAccess, bool bInheritHandle, uint dwProcessId);
const uint MEM_COMMIT = 0x1000;
const uint MEM_RELEASE = 0x8000;

const uint MEM_RESERVE = 0x2000;
const uint PAGE_READWRITE = 4;

[DllImport("kernel32.dll")]
static extern IntPtr VirtualAllocEx(IntPtr hProcess, IntPtr lpAddress, uint dwSize, uint flAllocationType, uint flProtect);

[DllImport("kernel32.dll")]
static extern bool VirtualFreeEx(IntPtr hProcess, IntPtr lpAddress, uint dwSize, uint dwFreeType);

[DllImport("kernel32.dll")]
static extern bool CloseHandle(IntPtr handle);

[DllImport("kernel32.dll")]
static extern bool WriteProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, IntPtr lpBuffer, int nSize, ref uint vNumberOfBytesRead);

[DllImport("kernel32.dll")]
static extern bool ReadProcessMemory(IntPtr hProcess, IntPtr lpBaseAddress, IntPtr lpBuffer, int nSize, ref uint vNumberOfBytesRead);

public struct LVITEM
{
    public int mask;
    public int iItem;
    public int iSubItem;
    public int state;
    public int stateMask;
    public IntPtr pszText;
    public int cchTextMax;
    public int iImage;
    public IntPtr lParam;
    public int iIndent;
    public int iGroupId;
    public int cColumns;
    public IntPtr puColumns;
}

int LVIF_TEXT = 0x0001;

/// <summary>
/// 获取 ListView 的行数
/// </summary>
/// <param name="hwnd"></param>
/// <returns></returns>
int ListView_GetItemCount(IntPtr hwnd)
{
    return SendMessage(hwnd, LVM_GETITEMCOUNT, 0, 0);
}

/// <summary>
/// 获取 ListView 的标题栏句柄
/// </summary>
/// <param name="hwnd"></param>
/// <returns></returns>
private IntPtr ListView_GetHeader(IntPtr hwnd)
{
    return (IntPtr)SendMessage(hwnd, LVM_GETHEADER, 0, 0);
}

/// <summary>
/// 获取 ListView 的标题栏的列数
/// </summary>
/// <param name="header"></param>
/// <returns></returns>
private int Header_GetItemCount(IntPtr header)
{
    return SendMessage(header, HDM_GETITEMCOUNT, 0, 0);
}

/// <summary>
/// 获取 ListView 的列数
/// </summary>
/// <param name="listViewHandle"></param>
/// <returns></returns>
int ListViewColumnCount(IntPtr listViewHandle)
{
    return Header_GetItemCount(ListView_GetHeader(listViewHandle));
}