类似windows explorer的图片浏览器

windows explore在查看文件中有查看缩略图这一选项,他的实质就是从thumbs文件中读取出已经生成的缩略图文件
然后做为image显示出来

在网上有如何读出thumbs文件的类库,今天使用这个类库模仿一下window explorer
类库的源地址
http://www.petedavis.net/MySite/DynPageView.aspx?pageid=31

原理读出thumbs文件中的图像并生成一个picturebox数组,显示图像并放置到窗体上,在picturebox被单击时,击发一个事件
将原图显示出来


private string[] allfilename;


ThumbDBLib.ThumbDB test;


private PictureBox[] allimage;




private void button1_Click(object sender, System.EventArgs e)




...{


this.Invalidate();




test=new ThumbDB(this.textBox1.Text);


allfilename=test.GetThumbfiles();


allimage=new PictureBox[allfilename.Length];




int x=0,y=50;




int i=0;


foreach(string bb in allfilename)




...{


allimage[i]=new PictureBox();


allimage[i].Location=new Point(x,y);


Image gotimg=test.GetThumbnailImage(bb);






x+=80;


if(x>this.Width)




...{


x=0;


y+=80;


}


allimage[i].Image=gotimg;




allimage[i].Size=new Size(75,75);


allimage[i].SizeMode=PictureBoxSizeMode.StretchImage;


allimage[i].Click+=new EventHandler(ImageControl_Click);


allimage[i].Tag=bb;






this.Controls.Add(allimage[i]);


//this.Refresh();




i++;


}




}








/**//// <summary>


/// 当用户单击时显示大图片


/// </summary>


/// <param name="sender"></param>


/// <param name="e"></param>


private void ImageControl_Click(object sender, EventArgs e)




...{


Form showbig=new Form();






string filename=Utitlity.GetDirFromFileName(textBox1.Text)+"/"+(sender as PictureBox).Tag;


PictureBox pb=new PictureBox();


Bitmap showmap=new Bitmap(filename);


pb.Image=showmap;




pb.Size=new Size(showmap.Width,showmap.Height);


showbig.Size=new Size(showmap.Width,showmap.Height);


pb.Location=new Point(0,0);




showbig.Controls.Add(pb);


if(showbig.ShowDialog()==DialogResult.OK)




...{


showbig.Dispose();


}




}






public class Utitlity




...{




/**//// <summary>


/// 从文件名中取出文件路径


/// </summary>


/// <param name="filename">文件名</param>


/// <returns>文件所在的路径</returns>


public static string GetDirFromFileName(string filename)




...{


string[] allpart=filename.Split('/');


return filename.Replace(allpart[allpart.Length-1],string.Empty);


}


}