上传图片文件,生成缩略图,并写上版权信息
发表于:2007-06-30来源:作者:点击数:
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private void Button1_Click(object sender, System.EventArgs e) { if(File1.PostedFile.FileName!=null) { string namestr = Path.GetFileName(File1.PostedFile.FileName);//提取文件名 File1.PostedFile.SaveAs(Server.MapPath(.)+@+namestr); Image2.Vis
private void Button1_Click(object sender, System.EventArgs e)
{
if(File1.PostedFile.FileName!=null)
{
string namestr = Path.GetFileName(File1.PostedFile.FileName);//提取文件名
File1.PostedFile.SaveAs(Server.MapPath(".")+@""+namestr);
Image2.Visible=true;
Image2.ImageUrl=Server.MapPath(".")+@""+namestr;
System.Drawing.Image image,aNewImage;
image=System.Drawing.Image.FromStream(File1.PostedFile.InputStream);
decimal width=image.Width;
decimal height=image.Height;
int newwidth,newheight;
if(width>height)
{
newwidth=150;
newheight=(int)(height/width*150);
}
else
{
newheight=150;
newwidth=(int)(width/height*150);
}
aNewImage=image.GetThumbnailImage(newwidth,newheight,null,IntPtr.Zero);
Bitmap output=new Bitmap(aNewImage);
Graphics g=Graphics.FromImage(output);
g.DrawString(TextBox1.Text.Trim(),new Font("Courier New", 9),new SolidBrush(Color.Red),60,60);//写版权信息及文本格式及位置
output.Save(Server.MapPath(".")+@"s_"+namestr,System.Drawing.Imaging.ImageFormat.Jpeg);
Image1.Visible=true;
Image1.ImageUrl=Server.MapPath(".")+@"s_"+namestr;
}
}
原文转自:http://www.ltesting.net