C#

using System;
using System.Runtime.Serialization.Formatter.Binary;
using System.IO;

[Serializable()]
public class MyClass
{
  public int MyInt;
  private int privateInt;
 
  public MyClass(int pub, int pri)
  {
    MyInt = pub;
    privateInt = pri;
  }
  
  public void PrintOut()
  {
    Console.WriteLine("MyInt = {0}, privateInt = {1}", MyInt.ToString(), privateInt.ToString());
  }
}
 
public class Driver
{
  public static void Main()
  {
    MyClass myClass = new MyClass(4, 2);

    // Save the instance to a file
    FileStream stream = new FileStream("C:\\myclass.bin", FileMode.CreateNew, FileAccess.Write);
    IFormatter formatter = new BinaryFormatter();
  
    // Actually does the saving
    formatter.Serialize(myClass);
    // Close the file
    stream.Close();
 
    // Set MyClass to null so that there are no handles to it anymore
    myClass = null;
 
 
    // Read the instance from the file
    stream = new FileStream("C:\\myclass.bin", FileMode.Open, FileAccess.Read);
  
    // Actually create the class instance from the file
    myClass = (MyClass) formatter.Deserialize(stream);
 
    // Close the stream
    stream.Close();

    // Show that all data was saved, public AND private
    myClass.PrintOut();
  }
}

class Form1 : System.Windows.Forms.Form
{

  bool shown = false;

  ...

  private void Form1_Activated(object sender, System.EventArgs e)
  {
    if (!shown)
    {
      shown = true;
      MessageBox.Show("I'm here.");
    }
  }
}

class Form1 : System.Windows.Forms.Form
{
  public Form1()
  {
    InitializeComponent();
  
    this.Activated += new EventHandler(Activated_PerformOnce);
  }

  private void Activated_PerformOnce(object sender, System.EventArgs e)
  {
    this.Activated -= new EventHandler(Activated_PerformOnce);
 
    // Do your on form show stuff
  }
}

// columnIndex must be set to a number.
int columnIndex = 1;
// remove the second column
GridColumnStylesCollection myGridColumns;
myGridColumns = dataGrid1.TableStyles[0].GridColumnStyles;
myGridColumns.RemoveAt( columnIndex );

GridColumnStylesCollection myGridColumns;
myGridColumns = dataGrid.TableStyles[0].GridColumnStyles;
 
foreach(DataGridColumnStyle style in myGridColumns)
{
  // GetColumnWidth takes the header name and returns the width the column should be
  style.Width = GetColumnWidth(style.HeaderName);
}