Microsoft访问c＃picturebox

Question

当我连接到C＃表单时，一切正常，但我无法将附件文件连接到图片框。我收到了一条包含此文字的错误消息框：Index was outside the bounds of the array.

byte[] imageBytes = (byte[])reader.GetValue(6);
MemoryStream ms = new MemoryStream();
ms.Write(imageBytes, 0, imageBytes.Length);
Bitmap p = new Bitmap(Image.FromStream(ms));
poto.Image = p;

Answer 1

尝试直接从流

分配图像

byte[] imageBytes = (byte[])reader.GetValue(6); 
comm = new OleDbCommand(sqlCommand, sqlConnection);
ImageByte = comm.ExecuteScalar();
MemoryStream ms = new MemoryStream(ImageByte);
poto.Image = Image.FromStream(ms);

如果您仍然收到错误：

  

无法转换类型为＆＃39; system.string＆＃39;的对象输入＆＃39; system.byte []＆＃39;

也许你的SQL查询有问题。调试并检查输出

MessageBox.Show(reader.GetValue(6).ToString());