C# 从流中读取位图

发布于 2025-01-17 23:11:53 字数 690 浏览 3 评论 0原文

我有一个网络流，它发送名称和图片。名称和图片以一个特定的单词开始和结尾例子： beginnamexxxxxxxxendnamebeginpyyyyyyyyyendpic 我将在块中收集流，并检查最后一个块是否包含图片的停止单词。

byte[] data = new byte[2048];
int numBytesRead = stream.Read(data, 0, 2048);
if (numBytesRead > 0)
{
code += Encoding.ASCII.GetString(data, 0, numBytesRead);
}

如果是，我将停止收集并将字符串分为名称部分和图片部分。原则上，我现在应该只有一个包含图片的字符串。之后，我尝试将其保存为映像，但我只在最后一个代码步骤

byte[] toEncodeAsBytes = ASCIIEncoding.ASCII.GetBytes(code);
MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length);
ms.Position = 0;
var image = Image.FromStream(ms, true);

异常中得到一个例外：system.argumentException'system.drawing.dll

有什么想法可能是什么问题？

原文

I've a network stream which sends a name and a picture. Name and picture start and end with a specific word
Example:
BeginNameXXXXXXXEndNameBeginPicYYYYYYYYYEndPic
I'll collect the stream in blocks and check if the last block contains the stop word of the picture.

byte[] data = new byte[2048];
int numBytesRead = stream.Read(data, 0, 2048);
if (numBytesRead > 0)
{
code += Encoding.ASCII.GetString(data, 0, numBytesRead);
}

If yes I'll stop collecting and divide the String into the name part and the picture part.
In principle I should have now a string only containing the picture.
Afterwards I try to save it as image but I only get an exception on the last code step

byte[] toEncodeAsBytes = ASCIIEncoding.ASCII.GetBytes(code);
MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length);
ms.Position = 0;
var image = Image.FromStream(ms, true);

Exception thrown: 'System.ArgumentException' in System.Drawing.dll

Any ideas what could be wrong?

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