本文为frank的学习笔记，转载请注明原文链接
C#中结合Post发送的Stream与Byte Array的操作似乎资料很少.下面是我这几天的研究成果.功能是将同文件夹下的a.jpg复制生成b.jpg.代码如下:
byteArray.aspx.cs
using System;
using System.IO;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.Net;
/*@
Author:frank
Site:www.2solo.cn
Date:2008.02.20
Info:C#复制图片,流与byteArray的应用,生成图片部分
*/
namespace bArray {
public partial class imgHandler : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
try
{
Stream sin = Page.Request.InputStream;
System.Drawing.Image img = System.Drawing.Bitmap.FromStream(sin);
Bitmap bmp = new Bitmap(img);
MemoryStream bmpStream = new MemoryStream();
bmp.Save(bmpStream, System.Drawing.Imaging.ImageFormat.Jpeg);
FileStream fs = new FileStream(System.Web.HttpContext.Current.Server.MapPath("b.jpg"), FileMode.Create);
bmpStream.WriteTo(fs);
bmpStream.Close();
fs.Close();
bmpStream.Dispose();
fs.Dispose();
Response.Write("成功");
}
catch
{
Response.Write("失败");
}
}
}
}
gopost.aspx.cs
using System;
using System.IO;
using System.Drawing;
using System.Drawing.Imaging;
using System.Net;
using System.Text;
/*@
Author:frank
Site:www.2solo.cn
Date:2008.02.20
info:C#复制图片,流与byteArray的应用,提交图片部分
*/
namespace gopost
{
public partial class postHandler : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
postImage();
}
private void postImage()
{
try
{
HttpWebRequest request;
string imgUrl = System.Web.HttpContext.Current.Server.MapPath("a.jpg");
request = (HttpWebRequest)HttpWebRequest.Create(http://localhost/byteArray/byteArray.aspx);
request.KeepAlive = true;
request.Method = "POST";
byte[] byteArray = CvtImgBArr((System.Drawing.Image)new Bitmap(@imgUrl), ImageFormat.Jpeg);
request.ContentType = "image/JPEG";
request.ContentLength = byteArray.Length;
Stream newStream = request.GetRequestStream();
newStream.Write(byteArray, 0, byteArray.Length);
newStream.Close();
Response.Write("复制图片成功");
}
catch
{
Response.Write("复制图片失败");
}
}
private static byte[] CvtImgBArr(System.Drawing.Image imageToConvert, ImageFormat formatOfImage)
{
byte[] imArr;
try
{
using (MemoryStream myms = new MemoryStream())
{
imageToConvert.Save(myms, formatOfImage);
imArr = myms.ToArray();
}
}
catch (Exception) { throw; }
return imArr;
}
}
}
相对来说，byte Array在Html表单中的应用可能一直被忽视,但是正确的应用byte Array可以大大的优化程序,并做出一些意想不到的效果来。当然，我研究byte Array主要还是为了最近的Flash研究.
附上范例文件:http://www.2solo.cn/upload/cbyteArray_2soloDOTcn.zip
