private static string ExcelFilter = "Excel(*.xls)|*.xls|All File(*.*)|*.*"; private static string ImageFilter = "Image Files(*.BMP;*.bmp;*.JPG;*.jpg;*.GIF;*.gif;*.png)|(*.BMP;*.bmp;*.JPG;*.jpg;*.GIF;*.gif;*.png)|All File(*.*)|*.*"; private static string HtmlFilter = "HTML files (*.html;*.htm)|*.html;*.htm|All files (*.*)|*.*"; private static string AccessFilter = "Access(*.mdb)|*.mdb|All File(*.*)|*.*"; private static string ZipFillter = "Zip(*.zip)|*.zip|All files (*.*)|*.*"; private const string ConfigFilter = "配置文件(*.cfg)|*.cfg|All File(*.*)|*.*"; private static string TxtFilter = "(*.txt)|*.txt|All files (*.*)|*.*";