/// <summary>
/// 根据文件扩展名获得预览图片路径
/// </summary>
private static string GetContentTypeThumbnail(string fileExtension, ContentTypeThumbnailSize size)
{
if (string.IsNullOrEmpty(fileExtension))
{
return(string.Empty);
}
if (fileExtension.Length > 1 && fileExtension.StartsWith("."))
{
fileExtension = fileExtension.Substring(1).ToLower();
}
TagBuilder span = new TagBuilder("span");
if (!MimeTypeConfiguration.Extensions.Contains(fileExtension))
{
fileExtension = "unknow";
}
switch (size)
{
case ContentTypeThumbnailSize.Large:
span.AddCssClass(string.Format("tn-mime-big tn-mime-{0}-big tn-icon-inline", fileExtension));
break;
case ContentTypeThumbnailSize.Small:
default:
span.AddCssClass(string.Format("tn-mime tn-mime-{0} tn-icon-inline", fileExtension));
break;
}
return(span.ToString());
}
/// <summary>
/// 根据文件类型显示缩略图
/// </summary>
/// <param name="htmlHelper"></param>
/// <param name="fileName">文件名称</param>
/// <param name="thumbnailSize">缩略图大小</param>
/// <param name="navigateUrl">缩略图链接地址</param>
/// <param name="navigateTarget">链接目标</param>
/// <returns></returns>
public static MvcHtmlString ContentTypeThumbnail(this HtmlHelper htmlHelper, string fileName, ContentTypeThumbnailSize thumbnailSize, string navigateUrl = null, HyperLinkTarget navigateTarget = HyperLinkTarget._self)
{
string fileExtension = Path.GetExtension(fileName);
string thumbnail = GetContentTypeThumbnail(fileExtension, thumbnailSize);
if (!string.IsNullOrEmpty(navigateUrl))
{
TagBuilder a = new TagBuilder("a");
a.MergeAttribute("href", navigateUrl);
if (navigateTarget != HyperLinkTarget._self)
a.MergeAttribute("target", navigateTarget.ToString());
a.InnerHtml = thumbnail;
return MvcHtmlString.Create(a.ToString());
}
else
return MvcHtmlString.Create(thumbnail);
}
/// <summary>
/// 根据文件扩展名获得预览图片路径
/// </summary>
private static string GetContentTypeThumbnail(string fileExtension, ContentTypeThumbnailSize size)
{
if (string.IsNullOrEmpty(fileExtension))
return string.Empty;
if (fileExtension.Length > 1 && fileExtension.StartsWith("."))
fileExtension = fileExtension.Substring(1).ToLower();
TagBuilder span = new TagBuilder("span");
if (!MimeTypeConfiguration.Extensions.Contains(fileExtension))
{
fileExtension = "unknow";
}
switch (size)
{
case ContentTypeThumbnailSize.Large:
span.AddCssClass(string.Format("tn-mime-big tn-mime-{0}-big tn-icon-inline", fileExtension));
break;
case ContentTypeThumbnailSize.Small:
default:
span.AddCssClass(string.Format("tn-mime tn-mime-{0} tn-icon-inline", fileExtension));
break;
}
return span.ToString();
}
/// <summary>
/// 根据文件类型显示缩略图
/// </summary>
/// <param name="htmlHelper"></param>
/// <param name="fileName">文件名称</param>
/// <param name="thumbnailSize">缩略图大小</param>
/// <param name="navigateUrl">缩略图链接地址</param>
/// <param name="navigateTarget">链接目标</param>
/// <returns></returns>
public static MvcHtmlString ContentTypeThumbnail(this HtmlHelper htmlHelper, string fileName, ContentTypeThumbnailSize thumbnailSize, string navigateUrl = null, HyperLinkTarget navigateTarget = HyperLinkTarget._self)
{
string fileExtension = Path.GetExtension(fileName);
string thumbnail = GetContentTypeThumbnail(fileExtension, thumbnailSize);
if (!string.IsNullOrEmpty(navigateUrl))
{
TagBuilder a = new TagBuilder("a");
a.MergeAttribute("href", navigateUrl);
if (navigateTarget != HyperLinkTarget._self)
{
a.MergeAttribute("target", navigateTarget.ToString());
}
a.InnerHtml = thumbnail;
return(MvcHtmlString.Create(a.ToString()));
}
else
{
return(MvcHtmlString.Create(thumbnail));
}
}
