/// <summary>
/// 创建一个缩略图
/// </summary>
/// <param name="photoPath">图片的路径信息</param>
/// <param name="thumbnailFolder">缩略图所在文件夹的完整路径</param>
/// <returns></returns>
public static bool CreateThumbnail(string photoPath, string thumbnailFolder)
{
bool createdThumbnail = false;
Image thumbnail;
try
{
// get full path to the thumbnail image
string thumbnailPath = Path.Combine(thumbnailFolder, GetThumbnailName(photoPath));
// see if the thumbnail already exist
if (!File.Exists(thumbnailPath))
{
// create the thumbnail image
thumbnail = PhotoHelper.GetThumbnail(photoPath, ThumbnailSize.Large);
// save thumbnail to file system
thumbnail.Save(thumbnailPath, ImageFormat.Jpeg);
createdThumbnail = true;
// clean up
if (!(thumbnail == null))
{
thumbnail.Dispose();
}
}
}
catch
{
// an error occurred, return null
}
finally
{
}
return(createdThumbnail);
}
//返回指定图片的缩略图(给定图片的路径)
public static Image GetThumbnail(string imagePath, int longestSide)
{
Image thumbnail;
Bitmap image;
try
{
//读取图片
image = new Bitmap(imagePath);
thumbnail = PhotoHelper.GetThumbnail(image, longestSide);
}
catch
{
return(null);
}
finally
{
//if (image != null)
//{
// image.Dispose();
//}
}
return(thumbnail);
}
//// public methods
//// return a list of Photo objects that are initialized from
//// metadata xml files if they exist
//public static Photo[] GetPhotos(string path, string thumbnailFolder)
//{
// string[] files = FileManager.GetPhotoFileList(path);
// if ((files == null))
// {
// return null;
// }
// Photo[] list = new Photo[files.Length];
// string thumbnailPath;
// // go through and create a new instance of each Photo
// for (int i = 0; (i
// <= (files.Length - 1)); i++)
// {
// thumbnailPath = Path.Combine(Path.Combine(Path.GetDirectoryName(files[i]), thumbnailFolder), GetThumbnailName(files[i]));
// // ReadXml returns a photo object. The Title, Description,
// // and DateTaken are set if there is an xml file. Otherwise
// // an empty object is returned.
// list[i] = Photo.ReadXml(files[i]);
// list[i].PhotoName = Path.GetFileNameWithoutExtension(files[i]);
// list[i].PhotoPath = files[i];
// list[i].ThumbnailCode = GetThumbnailCode(files[i]);
// list[i].ThumbnailPath = thumbnailPath;
// }
// return list;
//}
//获取照片对象列表
public static Photo[] GetPhotos(int FileID)
{
Photo[] list = null;
DataSet ds = DataAccess.getPhotoData(FileID);
if (ds != null && ds.Tables[0].Rows.Count > 0)
{
list = new Photo[ds.Tables[0].Rows.Count];
for (int i = 0; i < ds.Tables[0].Rows.Count; i++)
{
Photo photo = new Photo();
photo.PhotoID = Convert.ToInt32(ds.Tables[0].Rows[i]["照片ID"]);
photo.DocNumber = Convert.ToInt32(ds.Tables[0].Rows[i]["张号"]);
photo.Title = ds.Tables[0].Rows[i]["题名"].ToString();
photo.PhotoNumber = ds.Tables[0].Rows[i]["照片号"].ToString();
photo.CJNumber = ds.Tables[0].Rows[i]["参见号"].ToString();
photo.Maker = ds.Tables[0].Rows[i]["摄影者"].ToString();
photo.Description = ds.Tables[0].Rows[i]["文字说明"].ToString();
photo.PhotoName = ds.Tables[0].Rows[i]["Ftp保存名称"].ToString();
photo.PhotoPath = ds.Tables[0].Rows[i]["Ftp目录"].ToString();
photo.DateTaken = getDateTime(ds.Tables[0].Rows[i]["时间"].ToString());
object image = ds.Tables[0].Rows[i]["缩略图"];
if ((Object.Equals(image, null)) || (Object.Equals(image, System.DBNull.Value)) || (Object.Equals(image, string.Empty)))
{
Image img = PhotoControl.Properties.Resources.no_photo_s;
photo.Thumbnail = PhotoHelper.GetThumbnail(img, ThumbnailSize.Large);
}
else
{
MemoryStream ms = new MemoryStream((byte[])image);
photo.Thumbnail = Image.FromStream(ms);
}
list[i] = photo;
}
}
return(list);
}