System.Drawing.Image.FromStream（）在Windows XP上的「參數無效」

以下在我的Windows 7開發機器上工作正常，但是在Windows XP上運行時出現異常並聲明「Parameter is not valid」最後一行？System.Drawing.Image.FromStream（）在Windows XP上的「參數無效」

private string base64String = 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

byte[] bytes = Convert.FromBase64String(base64String); 
System.IO.MemoryStream ms = new System.IO.MemoryStream(bytes); 
System.Drawing.Image b = System.Drawing.Image.FromStream(ms, false, false);

這個base64字符串字符串在兩個操作系統上都能正常工作。它也是一個圖標，但尺寸較小：

"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"

來源

2013-03-18 PhatBuck

什麼格式是字節[]的數據？它是直接從光盤讀取的圖像文件還是現有的圖像對象？另外，您是否在兩臺機器上都使用相同版本的.NET？問題可能是您的圖像格式在一種情況下受支持，但不是兩種情況。也許可以嘗試用更安全的格式（比如位圖）重複測試，看看它是否以這種方式工作。 – Fopedush 2013-03-18 14:32:11

要驗證您的字節數組是否有效，可以嘗試將其寫入文件，然後查看是否可以將該文件作爲有效圖像打開。 – mbeckish 2013-03-18 14:35:12

您也可以嘗試在創建圖像之前將流重置爲開始： ms.Seek（0，SeekOrigin.Begin）; – mbeckish 2013-03-18 14:47:37

XP真的在牙齒上變長。它缺少的一點是gdiplus.dll的版本1.10，這是GDI +的更新，它隨Vista首次發佈。在該版本中有很多修復，對於一個它現在實際上支持ImageFormat.Icon。

您的圖像數據代表.ico文件。改爲使用Icon（Stream）構造函數。您可能仍然有24bpp圖標的問題，我無法再檢查。

來源

2013-03-18 18:18:04

非常感謝漢斯，這解決了我的問題。 – PhatBuck 2013-03-19 08:40:42

幹得不錯，漢斯。還有其他幾個關於這個錯誤的問題，並沒有真正解決。正如你可能從我刪除的答案中看到的那樣，我越來越接近了，但在刪除之後，我突然不再在意了。 – 2013-03-20 03:26:46

using (MemoryStream ms = new MemoryStream()) 
    { 
     image.Save(ms,System.Drawing.Imaging.ImageFormat.Jpeg); 
     ms.Seek(0,0); 
     byte[] data = new byte[0]; 
     data = ms.ToArray();   
    }

我要訪問的bracket.how之外的數據做

來源

2014-05-01 15:20:39 sagivasan

嗨，sagivasan，歡迎來到StackExchange。你已經把你的問題作爲對別人問題的答案;最好是開始一個新的問題。（提示：你需要做的只是在'using'塊之外聲明'data'，順便說一句，當你聲明它時，你也不需要分配'new byte [0]'）。 – 2015-01-07 17:40:25

System.Drawing.Image.FromStream（）在Windows XP上的「參數無效」

回答

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