WELOA.BLL/WEL/LS_Public.cs

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing.Imaging;

namespace LSBLL
{
public class LS_Public
{
    
    public ImageFormat getImageFormat(string suffix)
    {
        switch (suffix.ToLower())
        {
            case ".bmp":
                return ImageFormat.Bmp;

            case ".emf":
                return ImageFormat.Emf;

            case ".exif":
                return ImageFormat.Exif;

            case ".gif":
                return ImageFormat.Gif;

            case ".icon":
                return ImageFormat.Icon;

            case ".jpeg":
            case ".jpg":
                return ImageFormat.Jpeg;

            case ".png":
                return ImageFormat.Png;

            case ".tiff":
                return ImageFormat.Tiff;

            case ".wmf":
                return ImageFormat.Wmf;
        }
        return ImageFormat.MemoryBmp;
    }
}

}