51:
The sample displays the value in years, months, weeks, days, hours, minutes and secons

axExpression1.Expression = "trim((1:=int((0:=value)/365) ? =:1 + ` year(s) ` : ``)  + (1:=int((0:=(=:0 - (=:1*365)))/31) ? =:1 + ` month(s) ` : ``) + (1:=i" +
"nt((0:=(=:0 - (=:1*31)))/7) ? =:1 + ` week(s) ` : ``) + (1:=int((0:=(=:0 - (=:1*7)))/1) ? =:1 + ` day(s) ` : ``) + (1:=int((0:=(" +
"=:0 - =:1 + 1/24/60/60/2))*24) ? =:1 + ` hour(s) ` : ``) + (1:=int((0:=(=:0*24 - =:1))*60) ? =:1 + ` min(s) ` : ``) + (1:=int((0" +
":=(=:0*60 - =:1))*60) ? =:1 + ` sec(s)` : ``))";
axExpression1.EvaluationText = "value = 1\\r\\nvalue=2 + 1/24/60\\r\\nvalue=365 + 12 * 1/24\\r\\nvalue=1212.25\\r\\nvalue=366.02512";
axExpression1.SplitPaneWidth = 464;

50:
The sample displays the value in seconds

axExpression1.Expression = "(1:=(int(0:=(value*24*60*60 + 1/24/60/60/2))) ? =: 1 + ` sec(s)` : ``)";
axExpression1.EvaluationText = "value = 1\\r\\nvalue=2 + 1/24/60\\r\\nvalue=365 + 12 * 1/24\\r\\nvalue=1212.25\\r\\nvalue=366.02512";
axExpression1.SplitPaneWidth = 256;

49:
The sample displays the value in minutes and seconds

axExpression1.Expression = "trim((1:=(int(0:=(value*24*60 + 1/24/60/60/2))) ? =: 1 + ` min(s)` : ``) + ` ` + (2:=int((=:0 - =:1)*60) ? =:2 + ` sec(s)` : ``" +
"))";
axExpression1.EvaluationText = "value = 1\\r\\nvalue=2 + 1/24/60\\r\\nvalue=365 + 12 * 1/24\\r\\nvalue=1212.25\\r\\nvalue=366.02512";
axExpression1.SplitPaneWidth = 256;

48:
The sample displays the value in hours and minutes

axExpression1.Expression = "((1:=int(0:=( 24*int(value) + (value - int(value) + 1/24/60/60/2)*24))) != 0 ? =:1 + ' hour(s)' : '' ) + (=:1 ? ' ' : '' ) + ((" +
"1:=round((=:0 - =:1)*60)) != 0 ? =:1 + ' min(s)' : '')";
axExpression1.EvaluationText = "value = 1\\r\\nvalue=2 + 1/24/60\\r\\nvalue=365 + 12 * 1/24\\r\\nvalue=1212.25\\r\\nvalue=366.02512";
axExpression1.SplitPaneWidth = 256;

47:
How can I check for a blank-date (sample 3) Expression

axExpression1.Expression = "type(value) case ( default : `<fgcolor=000000><s>invalid</s></fgcolor>`; 0 : `<fgcolor=FF0000>null</fgcolor>`; 1 : `null` ; 7 :" +
" longdate(value) )";
axExpression1.SplitPaneWidth = 256;

46:
How can I check for a blank-date (sample 2) Expression

axExpression1.Expression = "len(value) ? longdate(value) : ``";
axExpression1.SplitPaneWidth = 256;

45:
How can I check for a blank-date (sample 1) Expression

axExpression1.Expression = "type(value) = 7 ? longdate(value) : ``";
axExpression1.SplitPaneWidth = 256;

44:
Easter Sunday

axExpression1.Expression = "date(dateS('3/1/' + year(value)) + ((1:=(((255 - 11 * (year(value) mod 19)) - 21) mod 30) + 21) + (=:1 > 48 ? -1 : 0) + 6 - ((y" +
"ear(value) + int(year(value) / 4)) + =:1 + (=:1 > 48 ? -1 : 0) + 1) mod 7))";
axExpression1.SplitPaneWidth = 256;

43:
The sample displays the value in days, hours and minutes

axExpression1.Expression = "((1:=int(0:= (value))) != 0 ? (=:1 + ' day(s)') : '') + (=:1 ? ' ' : '' ) + ((1:=int(0:=((=:0 - =:1 + 1/24/60/60/2)*24))) != 0 " +
"? =:1 + ' hour(s)' : '' ) + (=:1 ? ' ' : '' ) + ((1:=round((=:0 - =:1)*60)) != 0 ? =:1 + ' min(s)' : '')";
axExpression1.SplitPaneWidth = 256;

42:
How can I display the date in short format

axExpression1.Expression = "shortdate(date(value))";
axExpression1.SplitPaneWidth = 256;

41:
How can I display the date in long format

axExpression1.Expression = "longdate(date(value))";
axExpression1.SplitPaneWidth = 256;

40:
The sample displays the positive values in blue, being preceded by + sign, negative values in red preceded by - sign, 0 as 0.00 while for null values is displays null. The numbers are displayed using 2 digits, . as decimal separator and grouping by 3 digits by , separator

axExpression1.Expression = "type(value) in (0,1) ? 'null' : ( dbl(value)<0 ? '<fgcolor=FF0000>'+ (value format '2|.|3,' ) : (dbl(value)>0 ? '<fgcolor=0000F" +
"F>+'+(value format '2|.|3,' ): '0.00') ) ";
axExpression1.SplitPaneWidth = 256;

39:
How can I format a numeric value so it display as a currency

axExpression1.Expression = "currency(dbl(value))";
axExpression1.SplitPaneWidth = 256;

38:
How can I format a numeric value to with grouping

axExpression1.Expression = "dbl(value) format ''";
axExpression1.SplitPaneWidth = 256;

37:
How can I convert the value to a numeric ( integer ) value

axExpression1.Expression = "int(value)";
axExpression1.SplitPaneWidth = 256;

36:
How can I convert the value to a numeric ( double ) value

axExpression1.Expression = "dbl(value)";
axExpression1.SplitPaneWidth = 256;

35:
How can I format a date as YYYY-MMM-DD (sample 4)

axExpression1.Expression = "(year(value) + '-') + (month(value) array('','Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec')) + '-' + " +
"(day(value)<10 ? '0' : '') + day(value)";
axExpression1.SplitPaneWidth = 256;

34:
How can I format a date as YYYY-MMM-DD (sample 3)

axExpression1.Expression = "(2 array ( 0 := (shortdateF(value) split `/`) ) ) + `-`+ ((month(value) - 1) array `Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov" +
" Dec` split ` `) + `-`+ (1 array =: 0)";
axExpression1.SplitPaneWidth = 256;

33:
How can I format a date as YYYY-MMM-DD (sample 2)

axExpression1.Expression = "ltrim((2 array longdate(value) split `,`)) + `-` +  ((1 array (1 array longdate(value) split `,`) split ` `) left 3 ) + `-` + (" +
"`00` left (2 - len(day(value)))) + day(value)";
axExpression1.SplitPaneWidth = 256;

32:
How can I format a date as YYYY-MMM-DD (sample 1)

axExpression1.Expression = "year(value) + `-` +  (month(value)-1 array ('Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec')) + `-` + (" +
"`00` left (2 - len(day(value)))) + day(value)";
axExpression1.SplitPaneWidth = 256;

31:
How can I use my own operators only

axExpression1.AllowValueKeyword = false;
axExpression1.AllowDefaultOperators = false;
axExpression1.AddCustomOperator("+","<b>+</b>","This is a new binary-operator",2);
axExpression1.AddCustomOperator("xxx","<b>xxx</b>","This is a new keyword",0);
axExpression1.AddCustomOperator("yyy","<b>yyy</b>","This is a unary-operator",1);
axExpression1.AddCustomOperator("zzz","<b>zzz</b>","This is a binary-operator",2);
axExpression1.Text = "xxx + yyy(100 zzz 200)";

30:
How can I add a new binary-operator

axExpression1.AddCustomOperator("xxx","<b>xxx</b>","This is a new binary-operator",2);
axExpression1.Text = "value + 100 xxx 200";

29:
How can I add a new unary-operator

axExpression1.AddCustomOperator("xxx","<b>xxx</b>","This is a new unary-operator",1);
axExpression1.Text = "value + xxx(100)";

28:
How can I add a new keyword

axExpression1.AddCustomOperator("xxx","<b>xxx</b>","This is a new keyword",0);
axExpression1.Text = "value + xxx";

27:
How can I disable all operators
axExpression1.AllowValueKeyword = false;
axExpression1.AllowDefaultOperators = false;

26:
How can I disable the value keyword
axExpression1.AllowValueKeyword = false;

25:
Usage of and ( and operator )

axExpression1.SplitPaneWidth = 196;
axExpression1.Expression = "(value contains 1) and (value != 1)";

24:
Usage of or ( or operator )

axExpression1.SplitPaneWidth = 196;
axExpression1.Expression = "(value=1) or value=`string`";

23:
Usage of not ( not operator )

axExpression1.SplitPaneWidth = 196;
axExpression1.Expression = "not(value=1)";

22:
Usage of - ( subtraction operator )

axExpression1.SplitPaneWidth = 196;
axExpression1.Expression = "value - 2";

21:
Usage of + ( addition operator )

axExpression1.SplitPaneWidth = 196;
axExpression1.Expression = "value + 2";

20:
Usage of mod ( reminder operator )

axExpression1.SplitPaneWidth = 196;
axExpression1.Expression = "value mod 2";

19:
Usage of / (divide operator)

axExpression1.SplitPaneWidth = 196;
axExpression1.Expression = "value / 2";

18:
Usage of * (multiplicity operator)

axExpression1.SplitPaneWidth = 196;
axExpression1.Expression = "2 * value";

17:
How can I get the word from cursor when user double clicks the control
// DblClick event - Occurs when the user double clicks the left mouse button over an object.
private void axExpression1_DblClick(object sender, AxEXPRESSIONLib._IExpressionEvents_DblClickEvent e)
{
	System.Diagnostics.Debug.Print( "Word: " );
	System.Diagnostics.Debug.Print( axExpression1.get_WordFromPoint(-1,-1,null) );
}
//this.axExpression1.DblClick += new AxEXPRESSIONLib._IExpressionEvents_DblClickEventHandler(this.axExpression1_DblClick);

axExpression1.Expression = "value";
axExpression1.AllowSplitter = EXPRESSIONLib.SplitterEnum.exVSplitter;
axExpression1.SplitPaneHeight = 196;

16:
How do I determine the word from the cursor
// Click event - Occurs when the user presses and then releases the left mouse button over the list control.
private void axExpression1_ClickEvent(object sender, EventArgs e)
{
	System.Diagnostics.Debug.Print( "Word: " );
	System.Diagnostics.Debug.Print( axExpression1.get_WordFromPoint(-1,-1,null) );
}
//this.axExpression1.ClickEvent += new EventHandler(this.axExpression1_ClickEvent);

axExpression1.Expression = "value";
axExpression1.SplitPaneHeight = 196;
axExpression1.set_Background(EXPRESSIONLib.BackgroundPartEnum.exVSplitterApp,(uint)ColorTranslator.ToWin32(Color.FromArgb(240,240,240)));
axExpression1.AllowSplitter = EXPRESSIONLib.SplitterEnum.exVSplitter;

15:
How can I check if the expression is valid/syntactically correct
// Change event - Indicates that the control's text has changed.
private void axExpression1_Change(object sender, EventArgs e)
{
	System.Diagnostics.Debug.Print( "Valid: " );
	System.Diagnostics.Debug.Print( axExpression1.IsValid.ToString() );
}
//this.axExpression1.Change += new EventHandler(this.axExpression1_Change);

axExpression1.Expression = "value";
axExpression1.SplitPaneHeight = 196;
axExpression1.set_Background(EXPRESSIONLib.BackgroundPartEnum.exVSplitterApp,(uint)ColorTranslator.ToWin32(Color.FromArgb(240,240,240)));
axExpression1.AllowSplitter = EXPRESSIONLib.SplitterEnum.exVSplitter;

14:
How can I change the visual appearance of the horizontal splitter

axExpression1.Expression = "value";
axExpression1.SplitPaneHeight = 196;
axExpression1.set_Background(EXPRESSIONLib.BackgroundPartEnum.exVSplitterApp,(uint)ColorTranslator.ToWin32(Color.FromArgb(240,240,240)));
axExpression1.AllowSplitter = EXPRESSIONLib.SplitterEnum.exVSplitter;

13:
How can I change the visual appearance of the vertical splitter

axExpression1.Expression = "value";
axExpression1.SplitPaneWidth = 196;
axExpression1.set_Background(EXPRESSIONLib.BackgroundPartEnum.exHSplitterApp,(uint)ColorTranslator.ToWin32(Color.FromArgb(240,240,240)));

12:
How can I add a new menu-item to control's context menu
// ExecuteContextMenu event - Occurs when the user selects an user item from the control's context menu.
private void axExpression1_ExecuteContextMenu(object sender, AxEXPRESSIONLib._IExpressionEvents_ExecuteContextMenuEvent e)
{
	System.Diagnostics.Debug.Print( "ExecuteContextMenu: " );
	System.Diagnostics.Debug.Print( e.item.ToString() );
}
//this.axExpression1.ExecuteContextMenu += new AxEXPRESSIONLib._IExpressionEvents_ExecuteContextMenuEventHandler(this.axExpression1_ExecuteContextMenu);

axExpression1.Expression = "value + 100";
axExpression1.ContextMenuItems = "Test";

11:
How can I change the tooltip that shows when cursor hovers a keyword

axExpression1.Expression = "value";
axExpression1.set_Description(EXPRESSIONLib.KeywordEnum.exKeywordValue,"This is a bit of text to be shown when cursor hovers the <b>value</b> keyword.");
axExpression1.Refresh();

10:
How do I check if the expression is correct
axExpression1.Expression = "currency(value)";
System.Diagnostics.Debug.Print( axExpression1.IsValid.ToString() );

9:
How do I programmatically evaluate the expression
axExpression1.Expression = "currency(value)";
System.Diagnostics.Debug.Print( axExpression1.get_Evaluate("value=100").ToString() );

8:
How can I assign multiple values for variables %1, %2, ...

axExpression1.SplitPaneWidth = 196;
axExpression1.Expression = "currency(%1 + %2)";
axExpression1.EvaluationText = "%1 = 100;%2 = 200";

7:
How can I change the values to show the result
axExpression1.SplitPaneWidth = 196;
axExpression1.Expression = "currency(value)";
axExpression1.EvaluationText = "value = 100";

6:
How can I prevent changing the color when expression is invalid
axExpression1.SplitPaneWidth = 196;
axExpression1.Expression = "value 2";
axExpression1.ForeColorInvalid = Color.FromArgb(0,0,0);

5:
How can I change the color when expression is invalid
axExpression1.SplitPaneWidth = 196;
axExpression1.Expression = "value 2";
axExpression1.ForeColorInvalid = Color.FromArgb(255,0,0);

4:
How can I prevent evaluation the selection

axExpression1.SplitPaneWidth = 196;
axExpression1.Expression = "value + 1";
axExpression1.EvaluateSelection = false;
axExpression1.HideSelection = false;
axExpression1.SelLength = 1;

3:
How can I programatically show the result
axExpression1.SplitPaneWidth = 196;
axExpression1.Expression = "value";

2:
How can I get ride of the right-vertical line/split
axExpression1.AllowSplitter = EXPRESSIONLib.SplitterEnum.exNoSplitter;
axExpression1.Expression = "value + 1";

1:
How can I change the control's background
axExpression1.Expression = "value";
axExpression1.BackColor = Color.FromArgb(240,240,240);