public static string ReadFile(string filePath)
{
string fileContent = string.Empty;
OfficeUtil util = null;
FileInfo fi = new FileInfo(filePath);
switch (fi.Extension.ToLower())
{
case ".xml":
case ".txt":
case ".cs":
case ".csv":
fileContent = ReadTxtFile(filePath);
break;
//case ".doc":
case ".docx":
util = new WordUtil();
fileContent = util.Read(filePath);
break;
case ".xls":
case ".xlsx":
util = new ExcelUtil();
fileContent = util.Read(filePath);
break;
case ".ppt":
case ".pptx":
util = new PptUtil();
fileContent = util.Read(filePath);
break;
default:
break;
}
return(fileContent);
}