/// <summary>
/// 根据ContentTypeKey，得到Response的ContentType
/// </summary>
/// <param name="key">ContentTypeKey</param>
/// <returns>ContentType</returns>
/// <remarks>根据ContentTypeKey，得到Response的ContentType</remarks>
public static string GetContentTypeByKey(string key)
{
ContentTypesSection section = WebConfigFactory.GetContentTypesSection();
key = key.ToLower();
ContentTypeConfigElement elt = section.ContentTypes[key];
string contentType = elt != null ? elt.ContentType : string.Empty;
return(contentType);
}
/// <summary>
/// 根据文件扩展名，得到Response的ContentType
/// </summary>
/// <param name="fileExtesionName">文件扩展名</param>
/// <returns>ContentType</returns>
/// <remarks>根据文件扩展名，得到Response的ContentType</remarks>
public static string GetContentTypeByFileExtesionName(string fileExtesionName)
{
ContentTypesSection section = WebConfigFactory.GetContentTypesSection();
foreach (ContentTypeConfigElement elt in section.ContentTypes)
{
if (StringInCollection(fileExtesionName, elt.FileExtensionNames, true))
{
return(elt.ContentType);
}
}
return(string.Empty);
}