如何在不破壞圖片的情況下將圖像保存到數據庫中？

Question

我有一個關於使用BLOB數據類型在數據庫上保存圖像的問題，它成功保存圖像，但是當我使用我的圖片框檢索它時，它會將我的圖像毀壞。生病告訴你我的應用程序的截圖。我正在使用vb.net。

這是我在代碼保存在BLOB數據類型的圖像文件。

Dim filename As String = Me.OpenFileDialog1.FileName 
    Dim FileSize As UInt32 

    Dim conn As New MySqlConnection 
    conn = New MySqlConnection("server=localhost;user=root;password=;database=ticketing_system;") 
    conn.Open() 

    Dim mstream As New System.IO.MemoryStream() 
    Me.PbPicture.Image = Image.FromFile(Me.OpenFileDialog1.FileName) 
    Me.PbPicture.Image.Save(mstream, System.Drawing.Imaging.ImageFormat.Jpeg) 

    Dim arrImage() As Byte = mstream.GetBuffer() 


    FileSize = mstream.Length 
    Dim sqlcmd As New MySql.Data.MySqlClient.MySqlCommand 
    Dim sql As String 
    mstream.Close() 

    ' DBconn.Close() 

    sql = "INSERT INTO clientreports(img)VALUES(@File)" 
    Try 
     ' DBconn.Open() 
     With sqlcmd 
      .CommandText = sql 

      .Connection = conn 
      .Parameters.AddWithValue("@File", arrImage) 
      .ExecuteNonQuery() 
     End With 

    Catch ex As Exception 

     MsgBox(ex.Message) 

    Finally 

     conn.Close() 

    End Try 

這裏是我的代碼在圖片框上顯示我的圖像。

Dim strSQL As String 
    Dim conn As New MySqlConnection 
    Dim cmd As New MySqlCommand 
    Dim dr As MySqlDataReader 
    conn = New MySqlConnection("server=localhost;user=root;password=;database=ticketing_system;") 


    Dim SQLConnection As MySqlConnection = New MySqlConnection 
    'Dim connection As New SqlConnection("connection string here") 
    Dim command As New MySqlCommand("SELECT img FROM errdeschis where err_id='31'", conn) 

    conn.Open() 

    Dim pictureData As Byte() = DirectCast(command.ExecuteScalar(), Byte()) 
    conn.Close() 

    Dim picture As Image = Nothing 
    'Create a stream in memory containing the bytes that comprise the image. 
    Using stream As New IO.MemoryStream(pictureData) 

     'Read the stream and create an Image object from the data.  
     PictureBox1.Image = Image.FromStream(stream) 
    End Using 

請大家幫幫我。

Answer 1

OKAY.Use MEDIUMBLOB or LONGBLOB for the field。

Answer 2

你試過psren的回答嗎？

改變BLOB LONGBLOB到

這對我的作品！