文件、文件夹、颜色对话框

  string defaultPath = @"C:\Users\Administrator\Desktop\";
        public string GetDirPath()
        {
            FolderBrowserDialog dialog = new FolderBrowserDialog();
            dialog.Description = "请选择小图片的文件夹";
            dialog.SelectedPath = defaultPath;
            if (dialog.ShowDialog() == DialogResult.OK)
            {
                defaultPath = dialog.SelectedPath;
                return dialog.SelectedPath;
            }
            return "";
        }

        public string GetFilePath()
        {
            OpenFileDialog ofd = new OpenFileDialog();
            ofd.Filter = "图片文件(*.jpg,*.gif,*.bmp)|*.jpg;*.gif;*.bmp";
            ofd.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Templates);
            if (ofd.ShowDialog() == DialogResult.OK)
            {
                return ofd.FileName;
            }
            return "";

        }

        public Color GetBgColor()
        {
            ColorDialog cd = new ColorDialog();
            cd.AllowFullOpen = true;
            cd.FullOpen = true;
            cd.ShowHelp = true;
            if (cd.ShowDialog() == DialogResult.OK)
            {
                return cd.Color;
            }
            return Color.White;
        }