.NET (Core and Framework)

Private Sub importpupils_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnimportbob.Click
        Dim t As New Thread(AddressOf importbob)
        t.Name = "Import Bob"
        importPupilsThread = True
        t.SetApartmentState(ApartmentState.STA)
        t.Start()
End Sub

H.Hemdan wrote:

am just beginner and dont know how to write a class

Surya Ayyagari wrote:

But I have set DockStyle.Fill for the treeviews

using System;
using System.ComponentModel;
using System.Drawing;
using System.Windows.Forms;

public class MyPictureBox : PictureBox
{
    [Browsable(false)]
    [EditorBrowsable(EditorBrowsableState.Never)]
    [Obsolete("This property is obselete", true)]
    public new Color BackColor
    {
        get { return base.BackColor; }
        set { base.BackColor = value; }
    }
}

Imports System
Imports System.ComponentModel
Imports System.Drawing
Imports System.System.Windows.Forms

Public Class MyPictureBox
        Inherits PictureBox

    <Browsable(False)> _
    <EditorBrowsable(EditorBrowsableState.Never)> _
    <Obsolete("This property is obselete", true)> _
    Public Property BackColor() As Color
        Get
            Return MyBase.BackColor
        End Get
        Set(ByVal value As Color)
            MyBase.BackColor = value
        End Set
    End Property

End Class

public class MyPictureBox : PictureBox
{
    // This attribute hides the property from the Property Grid
    [Browsable(false),
    // This attribute hides the property from the code editor
    EditorBrowsable(EditorBrowsableState.Never),
    // This attribute marks the property as depreciated.
    // The compiler generates an error if there is an attempt to use it.
    Obsolete("This property is obselete", true)]
    public new int Width
    {
        get { return base.Width; }
        set { base.Width = value; }
    }

    // This attribute hides the property from the Property Grid
    [Browsable(false),
    // This attribute hides the property from the code editor
    EditorBrowsable(EditorBrowsableState.Never),
    // This attribute marks the property as depreciated.
    // The compiler generates a warning if there is an attempt to use it.
    Obsolete("This property is obselete")]
    public new int Height
    {
        get { return base.Height; }
        set { base.Height = value; }
    }

    // This property is fully visible, but uses the base class' property.
    public int MyWidth
    {
        get { return base.Width; }
        set { base.Width = value; }
    }

    // This property is fully visible, but uses the inherited property.
    public int MyHeight
    {
        get { return Height; }
        set { Height = value; }
    }
}