//对所有没有封面且有图片的活动，找到活动中第一张图，裁剪为270*200保存为封面，并保存到本地
private void setActivityCover(VolunteerService myService)
{
IEnumerable <Activity> allActivities = myService.FindAllActivities("", "", false, 0, 0);
foreach (Activity activity in allActivities)
{
if (activity.Cover == null)
{
if (activity.Photos.Count > 0)
{
try
{
string firstPhotoPath = HttpContext.Current.Server.MapPath("~" + activity.Photos.FirstOrDefault());
Stream fileStream = new FileStream(firstPhotoPath, FileMode.Open);
string imageName = Guid.NewGuid().ToString(); //生成图像名称
string path = "/Static/Images/Activity/" + imageName + ".jpg"; //相对路径+图像名称+图像格式
string filePath = HttpContext.Current.Server.MapPath("~" + path); //绝对路径
activity.Cover = path;
//270*200
HandleImageService.CutForCustom(fileStream, filePath, 270, 200, 75);
}
catch
{
activity.Cover = "/Static/Images/Activity/default.jpg";
}
activity.Save();
}
else
{
activity.Cover = "/Static/Images/Activity/default.jpg";
activity.Save();
}
}
}
}
