如何从mysql检索数据到包含image列的datagridview？

Question

I tried retrieving data from MySQL to datagridview. The table contains an image column. When I remove the image column, the code works fine but it doesn't seem to work with the image column included.

Here's my code.

Mda= new mysldataadapter ("select * from user_info", con)
Dt = new datatable
Mda.fill(dt)

With datagridview1
. Datasource =dt
End with

I get this error msg

Datagridview default error dialog
System.argumentexception: parameter is not valid at
system.drawing.image.fromstream(....

Answer 1

Try using MemoryStream to store the image then show it... something like this :

Dim command As New MySqlCommand("SELECT `id`, `pic` FROM `mytb` WHERE `id` = @ID", connection)

command.Parameters.Add("@ID", MySqlDbType.UInt64).Value = TextBoxID.Text

Dim Adapter As New MySqlDataAdapter(command)
Dim DBTable As New DataTable()

Try
    Adapter.Fill(DBTable)

    Dim imgByte() As Byte

    If DBTable.Rows.Count = 1 Then
        imgByte = DBTable(0)(1)

        Dim MS As New MemoryStream(imgByte)
        PictureBox1.Image = Image.FromStream(MS)
    End If
Catch ex As Exception
    MessageBox.Show("ERROR")
    PictureBox1.Image = Nothing
End Try

NOTE : The data type for the column must be BLOB .

Feel free to ask about anything you don't understand.

Hope that was helpful.