无法将类型为“ System.String”的对象转换为类型为“ System.Byte []”的对象。 发布后发生错误

Question

I am saving Image in a database. It works great when I Debug it. , but after publish it and I try to load or try to save the picture it gives me type cast error. I am using following code to save image:

MemoryStream ms = new MemoryStream();
kephelye.Image.Save(ms, kephelye.Image.RawFormat);
byte[] img = ms.ToArray();

and load image:

DataSet ds = new DataSet();
da.Fill(ds);
byte[] ap = (byte[])(ds.Tables[0].Rows[0]["kepcim"]);
MemoryStream ms = new MemoryStream(ap);
if (ms.Length != 0) {
 kephelye2.Image = Image.FromStream(ms);
}

ms.Close();

Answer 1

Simply get the image from the memory stream into a new bitmap, and close the stream.

public static Image GetImage(byte[] buffer, int offset, int count)
{
    var memoryStream = new MemoryStream(buffer, offset, count);
    Bitmap bm = new Bitmap(Image.FromStream(memoryStream));
    // Close the stream here, won't affect the bitmap.
    return bm;
}