Al Programming

Wednesday, April 9, 2014

DateTime Compare C# Example

C# > System Namespace > DateTime > Compare

Compares two dates of type DateTime.

Example

DateTime date1 = new DateTime(2014, 4, 1, 0, 0, 0);

DateTime date2 = new DateTime(2014, 5, 1, 0, 0, 0);

int cmp = DateTime.Compare(date1, date2);

if (cmp < 0)

MessageBox.Show("date1 is earlier than date2");

else if (cmp == 0)

MessageBox.Show("date1 is equal to date2");

else

MessageBox.Show("date1 is later than date2");

Tuesday, April 8, 2014

Check if a date is weekend day C#

C# > System Namespace > DateTime > DayOfWeek

The DayOfWeek enumeration represents the day of the week.
Its value ranges from zero (DayOfWeek.Sunday) to six (DayOfWeek.Saturday).

Example: Check if a date is weekend day

DateTime date1 = DateTime.Now;

if ((date1.DayOfWeek == DayOfWeek.Saturday || date1.DayOfWeek == DayOfWeek.Sunday ))

{

// action

}

DateTime Structure C#

C# > System Namespace > DateTime

DateTime structure represents an instant in time.

Example

DateTime dt= DateTime.Now;

Days In Month C# Example

C# > System Namespace > DateTime > DaysInMonth

Returns the number of days in the specified year and month.

Example

int daysInMonth = System.DateTime.DaysInMonth(2014, 4);

Friday, March 28, 2014

ASP.NET System Web UI HtmlControls

ASP.NET > System.Web.UI.HtmlControls

Contains classes that allow you to create HTML server controls on a Web Forms page, so it allows you to programmatically control the HTML elements on a Web Forms page.

HTMLTABLE

Create dynamic table runtime ASP.NET

ASP.NET > System.Web.UI.HtmlControls > HtmlTable

HtmlTable allows programmatic access on the server to the HTML

element.

Example: Create dynamic table runtime ASP.NET

HTML:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebApplication2.WebForm1" %>

<!DOCTYPE html>

</head>

<body>

<div>

<asp:Panel ID="Panel1" runat="server">

</asp:Panel>

</div>

</form>

</body>

</html>

Code:

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.HtmlControls;

using System.Web.UI.WebControls;

namespace WebApplication2

{

public partial class WebForm1 : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

HtmlTable dTable = new HtmlTable();

dTable.Border = 1;

int tRow;

int tCell;

for (tRow = 0; tRow < 10; tRow++)

{

HtmlTableRow dTRow = new HtmlTableRow();

for (tCell = 0; tCell < 5; tCell++)

{

HtmlTableCell dTCell = new HtmlTableCell();

dTCell.InnerText = "Row: " + Convert.ToString(tRow + 1) + " Col: " + Convert.ToString(tCell + 1);

dTRow.Controls.Add(dTCell);

}

dTable.Controls.Add(dTRow);

}

Panel1.Controls.Add(dTable);

}

C# Keywords

C# > Keywords

Keywords are reserved identifiers used by compiler.

cannot be used as identifiers in your program unless they include @ as a prefix (@then is a valid identifier)
contextual keywords have special meaning only in a limited program context and can be used as identifiers outside that context

Literal keywords