public string ShowPreview(string strFileName, string strThumb) { string result; if (ValidateUtils.IsImage(strFileName)) { result = string.Concat(new string[] { "<img class='thumb' data-original='", strFileName, "' src='", strThumb, "' alt='' />" }); } else { string text = System.IO.Path.GetExtension(strFileName).ToLower(); string text2 = text; if (text2 != null) { if (text2 == ".doc") { result = "<img class='thumb' data-original='../images/imgico/doc.png' src='../images/imgico/doc.png' alt='' />"; return(result); } if (text2 == ".pdf") { result = "<img class='thumb' data-original='../images/imgico/pdf.png' src='../images/imgico/pdf.png' alt='' />"; return(result); } if (text2 == ".rar") { result = "<img class='thumb' data-original='../images/imgico/rar.png' src='../images/imgico/rar.png' alt='' />"; return(result); } if (text2 == ".zip") { result = "<img class='thumb' data-original='../images/imgico/zip.png' src='../images/imgico/zip.png' alt='' />"; return(result); } if (text2 == ".txt") { result = "<img class='thumb' data-original='../images/imgico/txt.png' src='../images/imgico/txt.png' alt='' />"; return(result); } } result = "<img class='thumb' data-original='../images/imgico/file.png' src='../images/imgico/file.png' alt='' />"; } return(result); }