ASP.net在后台获取FileUpload上传后的Flash文件的宽高??我的问题最牛逼，你们说是不！

[lunar2008]

如提，我用fileupload控件上传了一个flash格式的a.swf文件，这时在后台（.cs文件中）请问如何得到它的宽度和高度，它和图片文件好像有很大区别~。。。

[i0876]

这个还真没有研究过。

[cherish024]

你这个问题本身和fieupload控件没有关系

只要考虑如何获取path上的文件宽高问题～～还有flash本来就是矢量，也没有个界限的高度和宽度～。。。

[LikeCode]

对flash知道的不多,但flash不是矢量的吗,这个应该没有象位图一样有宽高概念的吧,是不是?!

[Thie]

获得Flash舞台的大小？
没研究过。

[Animatrix]

确实是牛逼问题
这个没研究过。。。

[kiyeer]

可以用以下方法实现：
http://test.0579fw.com/mypane.aspx?down=ok&filepath=kiyeer%2f%bf%cd%bb%a7%c9%cf%b4%ab%2fManagedZLib.rar
下载上面的dll文件，放在项目的BIN文件中，并引用。
然后建立一个类flashinfo.cs：
内容如下:

using System;
using System.Collections;
using System.IO;
using System.Text;

namespace FW0579.CService
{
	public class FlashInfo 
	{
		private int width, height, version, frameCount, fileLength;
		private float frameRate;
		private bool isCompressed;
		public bool founderr;
		public string errmeg;

		public FlashInfo(string filename) 
		{
			if(!File.Exists(filename))
				throw new FileNotFoundException(filename);
			FileStream stream = new FileStream(filename, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
			BinaryReader reader = new BinaryReader(stream);
			try 
			{
				if(stream.Length < 8){
					throw new ArgumentNullException();}
				string flashMark = new string(reader.ReadChars(3));
				if(flashMark != "FWS" && flashMark != "CWS"){
					throw new ArgumentNullException();}
				isCompressed = flashMark == "CWS";
				version = Convert.ToInt32(reader.ReadByte());
				fileLength = reader.ReadInt32();
				byte[] dataPart = new byte[stream.Length - 8];
				reader.Read(dataPart, 0, dataPart.Length);
				MemoryStream dataStream = new MemoryStream(dataPart);
				try 
				{
					if(isCompressed) 
					{
						ManagedZLib.ManagedZLib.Initialize();
						ManagedZLib.CompressionStream zlibStream = new ManagedZLib.CompressionStream(dataStream, ManagedZLib.CompressionOptions.Decompress);
						BinaryReader zlibReader = new BinaryReader(zlibStream);
						MemoryStream memoryStreamDecompressed = null;
						try 
						{
							byte[] decompressedPart = new byte[fileLength - 8];
							zlibReader.Read(decompressedPart, 0, decompressedPart.Length);
							memoryStreamDecompressed = new MemoryStream(decompressedPart);
							ProcessCompressedPart(memoryStreamDecompressed);
						} 
						finally 
						{
							if(memoryStreamDecompressed != null)
								memoryStreamDecompressed.Close();
							zlibReader.Close();
							zlibStream.Close();
							ManagedZLib.ManagedZLib.Terminate();
						}
					} 
					else
						ProcessCompressedPart(dataStream);
				} 
				finally 
				{
					dataStream.Close();
				}
			} 
			finally 
			{
				reader.Close();
				stream.Close();
			}
		}

		private void ProcessCompressedPart(MemoryStream stream) 
		{
			BinaryReader reader = new BinaryReader(stream);
			try 
			{
				byte[] rect;
				int nbits, totalBits, totalBytes;
				nbits = reader.ReadByte() >> 3;
				totalBits = nbits * 4 + 5;
				totalBytes = totalBits / 8;
				if(totalBits % 8 != 0)
					totalBytes++;
				reader.BaseStream.Seek(-1, SeekOrigin.Current);
				rect = reader.ReadBytes(totalBytes);
				frameRate = float.Parse(string.Format("{1}.{0}", reader.ReadByte(), reader.ReadByte()));
				frameCount = Convert.ToInt32(reader.ReadInt16());
				BitArray bits = new BitArray(rect);
				bool[] reversedBits = new bool[bits.Length];
				for(int i = 0 ; i < totalBytes ; i++) 
				{
					int count = 7;
					for(int j = 8 * i ; j < 8 * (i + 1) ; j++) 
					{
						reversedBits[j + count] = bits[j];
						count -= 2;
					}
				}
				bits = new BitArray(reversedBits);
				StringBuilder sbField = new StringBuilder(bits.Length);
				for(int i = 0 ; i < bits.Length ; i++)
					sbField.Append(bits[i] ? "1" : "0");
				string result = sbField.ToString();
				string widthBinary = result.Substring(nbits + 5, nbits);
				string heightBinary = result.Substring(3 * nbits + 5, nbits);
				width = Convert.ToInt32(FlashInfo.BinaryToInt64(widthBinary) / 20);
				height = Convert.ToInt32(FlashInfo.BinaryToInt64(heightBinary) / 20);
			} 
			finally 
			{
				reader.Close();
			}
		}

		private static long BinaryToInt64(string binaryString) 
		{
			if(binaryString == null)
				throw new ArgumentNullException();
			long result = 0;
			for(int i = 0 ; i < binaryString.Length ; i++) 
			{
				result = result * 2;
				if(binaryString[i] == '1')
					result++;
			}
			return result;
		}

		public int Width 
		{
			get 
			{
				return this.width;
			}
		}

		public int Height 
		{
			get 
			{
				return this.height;
			}
		}

		public int FileLength 
		{
			get 
			{
				return this.fileLength;
			}
		}

		public int Version 
		{
			get 
			{
				return this.version;
			}
		}

		public float FrameRate 
		{
			get 
			{
				return this.frameRate;
			}
		}

		public int FrameCount 
		{
			get 
			{
				return this.frameCount;
			}
		}

		public bool IsCompressed 
		{
			get 
			{
				return this.isCompressed;
			}
		}
	}
}

然后调用：
FlashInfo strFlash = New FlashInfo(strPath);
int flashWidth, flashHeight;
flashWidth = strFlash.Width;
flashHeight = strFlash.Height;

[lunar2008]

OK谢谢楼上的朋友啦，我找到过这方面的函数了，其实目的就是要获取上传flash文件的宽高，比如你放在网页上时它显示时不是距形的一个动画么，就是这个距形的宽高，我说的应该很好理解呀！

[kiyeer]

我就是用这个可以获得flash文件的高度和宽度啊。有什么问题？

[rxdlovewy]

有没有在后台上传Flash格式的代码 有的话请发到我的邮箱里 [e-mail]谢谢了。

[茻鄷]

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