ASP.Net SQLDataSource Error: Value of byte can not be connverted to string

I have datalist bind with sql datasource I have update command

Protected Sub DataList1_UpdateCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataListCommandEventArgs)
        Dim ID As String = DataList1.DataKeys(e.Item.ItemIndex).ToString()
        Dim title As TextBox = CType(e.Item.FindControl("textCategoryName"), TextBox)
      
        Dim image As FileUpload = CType(e.Item.FindControl("FileUpload1"), FileUpload)


        SqlDataSource1.UpdateParameters("ID").DefaultValue = ID
        SqlDataSource1.UpdateParameters("title").DefaultValue = title.Text
      
        SqlDataSource1.UpdateParameters("image").DefaultValue = image.FileBytes
        SqlDataSource1.Update()
        DataList1.EditItemIndex = -1
        DataList1.DataBind()
    End Sub

It shows the error in the line

SqlDataSource1.UpdateParameters("image").DefaultValue = image.FileBytes

Value of byte can not be connverted to string

I also change the sql datasource parameters for image from object to byte

<UpdateParameters>
                    <asp:Parameter Name="title" Type="String" />
                   
                    <asp:Parameter Name="image" Type="byte" />
                    <asp:Parameter Name="ID" Type="Int32" />
                </UpdateParameters>