Graphical User Interface in C Sharp

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Graphical User Interface in C Sharp
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Objectives

• Demonstrate how to generate a form in C Sharp
• Illustrate the key components of a form
• Constructor
• InitializeComponents Method
• Dispose Method
• Demonstrate some controls available
• Demonstrate the Event Handler

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Form Creation

• To create a Windows based application select a
  Windows Application rather than a Console
  Application.
• At least two cs files are created
• Program.cs (this starts the application)
• Form1.cs (contains the form design and
  code)also contains
• Form1.designer.cs - code to define controls on
  form
• Form1.resx - non visible resources on a form

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(No Transcript)
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Program.cs Contents

• using System
• using System.Collections.Generic
• using System.Windows.Forms
• namespace WindowSCalculatorDemo
• static class Program
• /// ltsummarygt
• /// The main entry point for the
  application.
• /// lt/summarygt
• STAThread
• static void Main()
• Application.EnableVisualStyles()
• Application.SetCompatibleTextRendering
  Default(false)
• Application.Run(new Form1())

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Form1.cs Contents

• using System
• using System.Collections.Generic
• using System.ComponentModel
• using System.Data
• using System.Drawing
• using System.Text
• using System.Windows.Forms
• namespace Formsdemo1
• public partial class Form1 Form
• public Form1()
• InitializeComponent()
• private void Form1_Load(object sender,
  EventArgs e)

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Form1.Designer.cs part 1

• partial class Form1
• /// ltsummarygt
• /// Required designer variable.
• /// lt/summarygt
• private System.ComponentModel.IContainer
  components null
• /// ltsummarygt
• /// Clean up any resources being used.
• /// lt/summarygt
• /// ltparam name"disposing"gttrue if managed
  resources should be disposed otherwise,
  false.lt/paramgt
• protected override void Dispose(bool disposing)
• if (disposing (components !
  null))
• components.Dispose()

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Form1.Designer.cs part 2

• region Windows Form Designer generated code
• /// ltsummarygt
• /// Required method for Designer support
  - do not modify
• /// the contents of this method with the
  code editor.
• /// lt/summarygt
• private void InitializeComponent()
• this.SuspendLayout()
• //
• // Form1
• //
• this.AutoScaleDimensions new
  System.Drawing.SizeF(6F, 13F)
• this.AutoScaleMode
  System.Windows.Forms.AutoScaleMode.Font
• this.ClientSize new
  System.Drawing.Size(292, 266)
• this.Name "Form1"
• this.Text "Form1"
• this.Load new System.EventHandler(t
  his.Form1_Load)
• this.ResumeLayout(false)

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Initialize with Button and textbox

• private void InitializeComponent()
• this.button1 new System.Windows.Form
  s.Button()
• this.textBox1 new
  System.Windows.Forms.TextBox()
• this.SuspendLayout()
• //
• // button1
• //
• this.button1.Location new
  System.Drawing.Point(116, 47)
• this.button1.Name "button1"
• this.button1.Size new
  System.Drawing.Size(75, 23)
• this.button1.TabIndex 0
• this.button1.Text "Press Me"
• this.button1.UseVisualStyleBackColor
  true
• //
• // textBox1
• //
• this.textBox1.Location new
  System.Drawing.Point(105, 152)
• this.textBox1.Name "textBox1"

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Control Class

• Size and location
• Height, Width, Top, Bottom,Left, Right
• Dock property
• Anchor
• Appearance
• BackColor, ForeColor,Font name, size, Text
• User Interaction
• KeyDown,KeyPress,KeyUp
• Enter,GotFocus,Leave,Validating,Validated,LostFocu
  s

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Listbox

• From ListControl Class
• SelectedIndex integer value to the currently
  selected item
• DisplayMember
• ValueMember
• Obj ListBox1.ItemsListBox1.SelectedIndex
• FindString, FindStringExact
• SelectedIndexChanged event
• SelectedValueChanged event

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Event Handlers

• Each control (and the form itself) generates an
  event when it is used in some way!
• Each event has to be attached to an event
  hander -
• //
• // btnAdd
• //
• this.btnAdd.Location new
  System.Drawing.Point(37, 194)
• this.btnAdd.Name "btnAdd"
• this.btnAdd.Size new
  System.Drawing.Size(75, 23)
• this.btnAdd.TabIndex 3
• this.btnAdd.Text "Add"
• this.btnAdd.UseVisualStyleBackColor
  true
• this.btnAdd.Click new
  System.EventHandler(this.btnAdd_Click)
• this.btnAdd.Click new
  System.EventHandler(this.incrementer)

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• Application Properties
• Assembly name
• Namespace
• Startup object

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Application Class