public ImageLabel GetImageByIndex(Topic topic, uint index)
{
#region validation
if (topic == null)
{
throw new ArgumentNullException(nameof(topic));
}
#endregion
// get all imagefile paths
IEnumerable <string> imageFilePaths = GetImagePaths(topic);
if (imageFilePaths.Count() > index)
{
// get imagefilepath for specified index
string imagePath = GetImagePaths(topic).ElementAt((int)index);
// create default imagelabel and set index
ImageLabel imageLabel = CreateImageLabel(imagePath);
imageLabel.Index = index;
imageLabel.SetImageUrl(HttpContextAccessor.HttpContext, topic);
SetImageSize(topic, imageLabel);
return(imageLabel);
}
return(null);
}
private IEnumerable <ImageLabel> GetImageLabels(Topic topic)
{
#region validation
if (topic == null)
{
throw new ArgumentNullException(nameof(topic));
}
#endregion
List <ImageLabel> imageLabelList = new List <ImageLabel>();
long index = 0L;
foreach (string imagePath in GetImagePaths(topic))
{
string imageFileName = FileNameUtil.GetFileNameFromPath(imagePath);
ImageLabel imgLabel = CreateImageLabel(imagePath);
imgLabel.Index = index++;
imgLabel.SetImageUrl(HttpContextAccessor.HttpContext, topic);
imageLabelList.Add(imgLabel);
}
return(imageLabelList);
}
public ImageLabel GetImageLabelById(Topic topic, string imageId)
{
#region validation
if (topic == null)
{
throw new ArgumentNullException(nameof(topic));
}
if (string.IsNullOrEmpty(imageId))
{
throw new ArgumentNullException(nameof(imageId));
}
#endregion
// get all imagefile paths
List <string> imageFilePaths = new List <string>(GetImagePaths(topic));
foreach (string imageFilePath in imageFilePaths)
{
if (imageId.Equals(FileNameUtil.GetFileNameFromPath(imageFilePath)))
{
//create default imagelabel and set index
ImageLabel imageLabel = CreateImageLabel(imageFilePath);
imageLabel.Index = imageFilePaths.IndexOf(imageFilePath);
imageLabel.SetImageUrl(HttpContextAccessor.HttpContext, topic);
SetImageSize(topic, imageLabel);
return(imageLabel);
}
}
return(null);
}
