UNITY3D中設(shè)置文件選擇框的范例：

using OpenWinForm = System.Windows.Forms;
在unity3d中，使用FileDialog應(yīng)該把System.Windows.Forms.dll拷貝到unity工程的plugins目錄，
并且把Player Setting中Other Settings下的api compatibility Level改為.NET2.0。要不無法編譯通過。
//比如unity3d要讓用戶選擇某個(gè)音樂文件播放;
private void SelectMusic(){
        OpenWinForm.OpenFileDialog op = new OpenWinForm.OpenFileDialog();
        op.Title = "音樂";
        op.Filter = "音頻文件(*.wiseglove;*.ogg)|*.wiseglove;*.ogg";
        if (op.ShowDialog() == OpenWinForm.DialogResult.OK || op.ShowDialog() == OpenWinForm.DialogResult.Yes)
        {
            string selectName = op.FileName;
            customBgmPath.text = selectName;

            string path = customBgmPath.text;      
            WWW www = new WWW("file://"+path);
            if(www.audioClip){
                AudioClip clip = www.audioClip;
                AudioPlayCtr.instance.ChangeBgMusic(clip);
            }
        }
        else {
            return;
        }
    }
    //自定義文件保存文件夾;
    private void SaveCutScreenPath()
    {
        OpenWinForm.FolderBrowserDialog fb = new OpenWinForm.FolderBrowserDialog();
        fb.ShowNewFolderButton = true;
        fb.RootFolder = Environment.SpecialFolder.MyDocuments;
        fb.SelectedPath = "C:";
        fb.Description = "請選擇截圖保存目錄";
        fb.RootFolder = Environment.SpecialFolder.MyDocuments;
        if (fb.ShowDialog() == OpenWinForm.DialogResult.OK || fb.ShowDialog() == OpenWinForm.DialogResult.Yes)
        {
            string selectName = fb.SelectedPath;
            customCutScreenPath.text = selectName;
        }
        else {
            return;
        }
    }

//比如unity3d截圖后，彈出對話框用戶選擇保存路徑;
public IEnumerator CutScreent() {
        int width = Screen.width;
        int height = Screen.height;
        yield return new WaitForEndOfFrame(); 
        Texture2D tex = new Texture2D(width, height, TextureFormat.RGB24, false);//設(shè)置Texture2D
        tex.ReadPixels(new Rect(0, 0, width, height), 0, 0);//獲取Pixels           
        tex.Apply();//應(yīng)用改變
        byte[] bytes = tex.EncodeToPNG();//轉(zhuǎn)換為byte[]
        Destroy(tex);

        OpenWinForm.SaveFileDialog saveFileDialog = new OpenWinForm.SaveFileDialog();
        saveFileDialog.Filter = "圖像文件(*.png)|*.png";
        saveFileDialog.FilterIndex = 2;
        saveFileDialog.RestoreDirectory = true;
        if (saveFileDialog.ShowDialog() == OpenWinForm.DialogResult.OK)
        {
            string fName = saveFileDialog.FileName;
            Stream flstr = new FileStream(fName, FileMode.Create);//文件操作
            BinaryWriter sw = new BinaryWriter(flstr, System.Text.Encoding.Unicode);
            sw.Write(bytes);
            sw.Close();
            flstr.Close();
        }
    }

不忙啊， 調(diào)用winform還有個(gè)坑， 得注冊組件才不會(huì)出現(xiàn) oop, could not register... 等等文字

    /* 注冊winform對話框*/
    #region winform
    private System.Threading.Thread CloseOops;
    private bool ThreadRunning = true;
    private void OopsWindowsThreadStart()
    {
        CloseOops = new System.Threading.Thread(ClearOopsWindows) { IsBackground = true };
        ThreadRunning = true;
        CloseOops.Start();
    }
    private void ClearOopsWindows()
    {
        while (ThreadRunning)
        {
            FindAndCloseWindow();
        }
    }

    [System.Runtime.InteropServices.DllImport("user32.dll")]
    public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
    [System.Runtime.InteropServices.DllImport("user32.dll")]
    public static extern int SendMessage(IntPtr hWnd, uint Msg, int wParam, int lParam);

    public const int WM_SYSCOMMAND = 0x0112;
    public const int SC_CLOSE = 0xF060;

    public static void FindAndCloseWindow()
    {
        IntPtr lHwnd = FindWindow(null, "Oops");
        if (lHwnd != IntPtr.Zero)
        {
            SendMessage(lHwnd, WM_SYSCOMMAND, SC_CLOSE, 0);
        }
    }
    #endregion

記得在腳本程序的 start()函數(shù)里調(diào)用下  OopsWindowsThreadStart（）， 到此較好呈現(xiàn)winform對話框。