C# 使用ashx动态调整图像大小
我想在使用ashx处理程序时调整图像大小。我从Android应用程序中获取图像,所有代码都运行良好(图像存储在服务器目录中),但图像非常大。在ashx处理程序中是否有调整图像大小的方法C# 使用ashx动态调整图像大小,c#,ashx,C#,Ashx,我想在使用ashx处理程序时调整图像大小。我从Android应用程序中获取图像,所有代码都运行良好(图像存储在服务器目录中),但图像非常大。在ashx处理程序中是否有调整图像大小的方法 HttpPostedFile hpf = context.Request.Files[0] as HttpPostedFile; if (hpf.ContentLength != 0) { savedFileName = context.Server.MapPath("~/Uplo
HttpPostedFile hpf = context.Request.Files[0] as HttpPostedFile;
if (hpf.ContentLength != 0)
{
savedFileName = context.Server.MapPath("~/Uploads/" + Path.GetFileName(hpf.FileName));
hpf.SaveAs(savedFileName);
}
好吧,我想起来了
HttpPostedFile hpf = context.Request.Files[0] as HttpPostedFile;
if (hpf.ContentLength != 0)
{
var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
var random = new Random();
var result = new string(
Enumerable.Repeat(chars, 8)
.Select(s => s[random.Next(s.Length)])
.ToArray());
savedFileName = context.Server.MapPath("~/Uploads/" + Path.GetFileName(hpf.FileName));
hpf.SaveAs(savedFileName);
string File1 = Path.GetFileName(hpf.FileName);
imageNewval = result + "_ReemEyalLia_" + DateTime.Now.ToString("ddMMyyyhhmmss");
Bitmap originalBMP = new Bitmap(hpf.InputStream);
decimal origWidth = originalBMP.Width;
decimal origHeight = originalBMP.Height;
decimal sngRatio = origHeight / origWidth;
int newHeight = 200;
decimal newWidth_temp = newHeight / sngRatio;
int newWidth = Convert.ToInt16(newWidth_temp);
Bitmap newBMP = new Bitmap(originalBMP, newWidth, newHeight);
Graphics oGraphics = Graphics.FromImage(newBMP);
oGraphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; oGraphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Default;
oGraphics.DrawImage(originalBMP, 0, 0, newWidth, newHeight);
newBMP.Save(context.Server.MapPath("~/Uploads/" + imageNewval + Path.GetExtension(File1)));
originalBMP.Dispose();
newBMP.Dispose();
oGraphics.Dispose();
}
好吧,我想起来了
HttpPostedFile hpf = context.Request.Files[0] as HttpPostedFile;
if (hpf.ContentLength != 0)
{
var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
var random = new Random();
var result = new string(
Enumerable.Repeat(chars, 8)
.Select(s => s[random.Next(s.Length)])
.ToArray());
savedFileName = context.Server.MapPath("~/Uploads/" + Path.GetFileName(hpf.FileName));
hpf.SaveAs(savedFileName);
string File1 = Path.GetFileName(hpf.FileName);
imageNewval = result + "_ReemEyalLia_" + DateTime.Now.ToString("ddMMyyyhhmmss");
Bitmap originalBMP = new Bitmap(hpf.InputStream);
decimal origWidth = originalBMP.Width;
decimal origHeight = originalBMP.Height;
decimal sngRatio = origHeight / origWidth;
int newHeight = 200;
decimal newWidth_temp = newHeight / sngRatio;
int newWidth = Convert.ToInt16(newWidth_temp);
Bitmap newBMP = new Bitmap(originalBMP, newWidth, newHeight);
Graphics oGraphics = Graphics.FromImage(newBMP);
oGraphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias; oGraphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Default;
oGraphics.DrawImage(originalBMP, 0, 0, newWidth, newHeight);
newBMP.Save(context.Server.MapPath("~/Uploads/" + imageNewval + Path.GetExtension(File1)));
originalBMP.Dispose();
newBMP.Dispose();
oGraphics.Dispose();
}