C#

private Font boldFont;

private void tabControl1_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
{
	if( this.boldFont == null )
		this.boldFont = new Font( this.tabControl1.Font, FontStyle.Bold );

	TabPage page = this.tabControl1.TabPages[e.Index];
	bool selected = page == this.tabControl1.SelectedTab;
	StringFormat frmt = new StringFormat();
	frmt.LineAlignment = StringAlignment.Center;

	using( Brush brush = new SolidBrush( page.BackColor ) )
		e.Graphics.FillRectangle( brush, e.Bounds );

	e.Graphics.DrawString( page.Text, selected ? this.boldFont : this.tabControl1.Font, SystemBrushes.ControlText, e.Bounds, frmt );
}

using System;
using System.Diagnostics;
using System.ComponentModel;
using System.Runtime.InteropServices;
using BoneSoft.LinksLibrary;

namespace LinksLibrarian2 {
    public class ProcessCapturer {
        static ProcessCapturer() {}

        public static ShortCuts CaptureWindows() {
            ShortCuts scs = new ShortCuts();
            scs.AddRange(CaptureFolders());
            scs.AddRange(CaptureIEs());
            Process[] localAll = Process.GetProcesses();
            foreach (Process p in localAll) {
                try {
                    if (p.MainWindowTitle.Equals(string.Empty)) { continue; }
                    ShortCut esc = null;
                    esc = new ExeShortCut(p.MainWindowTitle, p.MainModule.FileName);
                    if (esc == null) { continue; }
                    esc.Description = p.ProcessName;
                    scs.Add(esc);
                } catch {}
            }
            return scs;
        }

        public static ShortCuts CaptureWindowless() {
            ShortCuts scs = new ShortCuts();
            Process[] localAll = Process.GetProcesses();
            foreach (Process p in localAll) {
                try {
                    if (!p.MainWindowTitle.Equals(string.Empty)) { continue; }
                    ShortCut esc = null;
                    esc = new ExeShortCut(p.ProcessName, p.MainModule.FileName);
                    if (esc == null) { continue; }
                    esc.Description = p.ProcessName;
                    scs.Add(esc);
                } catch {}
            }
            return scs;
        }
    }
}

try
{
   Interaction.AppActivate(id);
}
catch (ArgumentException)
{
   uint hwndInstance = FindWindow(null, p.ProcessName);
}

public enum MyDocFields {
   FirstField = 0,
   SecondField = 1,
   ...
}

Dictionary<string, int> dictDocFields = new Dictionary<string, int>();
dictDocFields.Add("FirstField", 1);
...

char endChar = cb.Name[cb.Name.Length - 1];
FieldInfo fiNumL = this.GetType().GetField("numericUpDown" + endChar + "L");
FieldInfo fiNumR = this.GetType().GetField("numericUpDown" + endChar + "R");
FieldInfo fiMath = this.GetType().GetField("cbMath" + endChar);
Control cNumL = fiNumL.GetValue(this) as Control;
Control cNumR = fiNumR.GetValue(this) as Control;
Control cMath = fiMath.GetValue(this) as Control;
cNumR.Visible = (cNumL.Visible && cMath.Text == "Range");

this.numericUpDownGR.Visible = this.numericUpDownGL.Visible && this.cbMathG.Text == "Range";

private void do(Contol upDown, Control upDown2, string math, Control picker, Control picker2) {
	upDown2.Visible = (upDown.Visible && math == "Range");
	picker2.Visible = (picker.Visible && math == "Range")
}

private void cbMath_IndexChanged(object sender, System.EventArgs e) {
	switch (((ComboBox)sender).Name) {
	case "cbMathA":
		do(this.numericUpDownAL, this.numericUpDownAR, this.cbMathA.Text, this.dateTimePickerAL, this.dateTimePickerAR);
		break;
	case "cbMathB":
		do(this.numericUpDownBL, this.numericUpDownBR, this.cbMathB.Text, this.dateTimePickerBL, this.dateTimePickerBR);
 		break;
	case "cbMathC":
		do(this.numericUpDownCL, this.numericUpDownCR, this.cbMathC.Text, this.dateTimePickerCL, this.dateTimePickerCR);
		break;
	case "cbMathD":
		do(this.numericUpDownDL, this.numericUpDownDR, this.cbMathD.Text, this.dateTimePickerDL, this.dateTimePickerDR);
		break;
	case "cbMathE":
		do(this.numericUpDownEL, this.numericUpDownER, this.cbMathE.Text, this.dateTimePickerEL, this.dateTimePickerER);
		break;
	case "cbMathF":
		do (this.numericUpDownFL, this.numericUpDownFR, this.cbMathF.Text, this.dateTimePickerFL, this.dateTimePickerFR);
		break;
	case "cbMathG":
		do (this.numericUpDownGL, this.numericUpDownGR, this.cbMathG.Text, this.dateTimePickerGL, this.dateTimePickerGR);
		break;
	}
}