使用c將字節轉換爲圖像＆圖像到字節＃

Question

當前我正在使用asp.net and c#將圖像存儲到MySql（使用blob數據類型）。我成功地將其存儲到數據庫中，但現在的問題是how can i retrieve that byte[] to image format ?

功能：code to convert byte[] to image

public Image byteArrayToImage(byte[] byteArrayIn) 
    { 
     MemoryStream ms = new MemoryStream(byteArrayIn); 
     Image returnImage = Image.FromStream(ms); --> here gives me error as `parameter is not valid` 
     return returnImage; 

    } 

retieved如數據表...

if (dt1.Rows.Count > 0) 
     { 
      byteArrayToImage((byte[]) dt1.Rows[0]["PortfolioSlideImages"]); 
      //MemoryStream ms = new MemoryStream((byte[])dt1.Rows[0]["PortfolioSlideImages"]); 
      //Image returnImage = Image.FromStream(ms); 
      //return returnImage; 
     } 

Answer 1

試試這個功能，

public Image byteArrayToImage(byte[] byteArrayIn) 
{ 
    Image returnImage = null; 
    using (MemoryStream ms = new MemoryStream(byteArrayIn)) 
    { 
     returnImage = Image.FromStream(ms); 
    } 
    return returnImage; 
} 

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