Insert image into datagridview using byte

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Hi,

I'm having a problem inserting a byte image into my datagridview;

Firstly Form Class:

Dim imgbyte As Byte() = Nothing

Form Load:

table.Columns.Add("Image", GetType(Byte()))

Button to generate data to datagridview;

table.Rows.Add(GetType(Byte)

Button2 to add image to picturebox1 as byte;

If OpenFileDialog1.ShowDialog = vbOK Then

        End If

        Dim myimage As Image = Image.FromFile(OpenFileDialog1.FileName)

        Dim imagestream As System.IO.MemoryStream = New System.IO.MemoryStream

        myimage.Save(imagestream, System.Drawing.Imaging.ImageFormat.Jpeg)
        imgbyte = imagestream.GetBuffer

        PictureBox1.Image = Drawing.Image.FromStream(imagestream)

I then get the following error:

An unhandled exception of type 'System.ArgumentException' occurred in System.Data.dll

Additional information: Type of value has a mismatch with column typeCouldn't store <System.Byte> in Image Column.  Expected type is Byte[].

Which flags the following line;

table.Rows.Add(GetType(Byte)

Anyone able to advise?

What I have tried:

Researching forums using search button.

Posted 20-Apr-17 9:50am

caf20012

Updated 20-Apr-17 11:06am

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Comments

[no name] 20-Apr-17 15:52pm

So what is in imgbyte and why aren't you using it?

caf20012 20-Apr-17 16:04pm

What should i be using, as i'm fairly new to Visual Studios. Sorry for the incompetence.

I can't use picturebox1

ongilito 20-Apr-17 16:50pm

Where are you getting your image from?

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ongilito · Answer 1 · 2017-04-20T11:06:00

VB

Imports System.IO
Imports System.Drawing.Imaging
Imports System.Drawing

Public Class Form1
    Dim ms As MemoryStream
    Dim imgData() As Byte
    Dim sqlSTR As String

    'This code saves the image in form of byte into SQl Server

    Sub saveImage()
        Dim p As New SqlParameter
        Try
          dim  sqlSTR As String= "UPDATE tableName SET imageField = @imageParameter"
            Using sqlCmmnd As New SqlClient.SqlCommand(sqlSTR, con)
                If Not PictureBox1.Image Is Nothing Then
                    ms = New MemoryStream
                    PictureBox1.Image.Save(ms, ImageFormat.Jpeg)
                    imgData = New Byte(ms.Length) {}
                    ms.Position = 0
                    ms.Read(imgData, 0, imgData.Length)
                    sqlCmmnd.Parameters.AddWithValue("@logo", imgData)
                Else
                    With p
                        .ParameterName = "@imageParameter"
                        .DbType = DbType.Binary
                        .Value = System.DBNull.Value
                    End With
                    sqlCmmnd.Parameters.Add(p)
                End If
                con.Open()
                sqlCmmnd.ExecuteNonQuery()
            End Using
            con.Close()           
        Catch ex As Exception
            MsgBox(ex.Message.ToString, MsgBoxStyle.Exclamation, "Error")
        End Try
    End Sub


   'This sub gets the byte image and converts it then displays on the picturebox, you can also add it to datagriedview

   Sub loadImage()
        Try
            Dim sqlDA As New SqlDataAdapter("SELECT imageField FROM tableName WHERE uniqueField ='" & Replace(TextBox1.Text.Trim, "'", "''") & "'",.con)
            Dim sqlCB As New SqlCommandBuilder(sqlDA)
            sqlDT.Reset()
            sqlDA.Fill(sqlDT)
            If Not IsDBNull(sqlDT.Rows(0)("imageField ")) Then
                imgData = sqlDT.Rows(0)("imageField ")
                Dim ms As MemoryStream = New MemoryStream(imgData)
                PictureBox1.Image = Image.FromStream(ms)
                ' for DataGridview DataGridView1.Rows(index).Add(Image.FromStream(ms))
            Else
                PictureBox1.Image = Nothing
            End If
        Catch ex As Exception
            MsgBox(ex.Message.ToString, MsgBoxStyle.Exclamation, "Error")
        End Try

    End Sub
End Class