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Lesson 21.3 - Add a button and create its eventhandler in code, without the UI design screen
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;
using Engine;
namespace SuperAdventure
{
public partial class SuperAdventure : Form
{
private const string PLAYER_DATA_FILE_NAME = "PlayerData.xml";
private Player _player;
public SuperAdventure()
{
InitializeComponent();
if(File.Exists(PLAYER_DATA_FILE_NAME))
{
_player = Player.CreatePlayerFromXmlString(File.ReadAllText(PLAYER_DATA_FILE_NAME));
}
else
{
_player = Player.CreateDefaultPlayer();
}
lblHitPoints.DataBindings.Add("Text", _player, "CurrentHitPoints");
lblGold.DataBindings.Add("Text", _player, "Gold");
lblExperience.DataBindings.Add("Text", _player, "ExperiencePoints");
lblLevel.DataBindings.Add("Text", _player, "Level");
dgvInventory.RowHeadersVisible = false;
dgvInventory.AutoGenerateColumns = false;
dgvInventory.DataSource = _player.Inventory;
dgvInventory.Columns.Add(new DataGridViewTextBoxColumn
{
HeaderText = "Name",
Width = 197,
DataPropertyName = "Description"
});
dgvInventory.Columns.Add(new DataGridViewTextBoxColumn
{
HeaderText = "Quantity",
DataPropertyName = "Quantity"
});
dgvQuests.RowHeadersVisible = false;
dgvQuests.AutoGenerateColumns = false;
dgvQuests.DataSource = _player.Quests;
dgvQuests.Columns.Add(new DataGridViewTextBoxColumn
{
HeaderText = "Name",
Width = 197,
DataPropertyName = "Name"
});
dgvQuests.Columns.Add(new DataGridViewTextBoxColumn
{
HeaderText = "Done?",
DataPropertyName = "IsCompleted"
});
cboWeapons.DataSource = _player.Weapons;
cboWeapons.DisplayMember = "Name";
cboWeapons.ValueMember = "Id";
if(_player.CurrentWeapon != null)
{
cboWeapons.SelectedItem = _player.CurrentWeapon;
}
cboWeapons.SelectedIndexChanged += cboWeapons_SelectedIndexChanged;
cboPotions.DataSource = _player.Potions;
cboPotions.DisplayMember = "Name";
cboPotions.ValueMember = "Id";
_player.PropertyChanged += PlayerOnPropertyChanged;
_player.OnMessage += DisplayMessage;
_player.MoveTo(_player.CurrentLocation);
}
private void DisplayMessage(object sender, MessageEventArgs messageEventArgs)
{
rtbMessages.Text += messageEventArgs.Message + Environment.NewLine;
if(messageEventArgs.AddExtraNewLine)
{
rtbMessages.Text += Environment.NewLine;
}
rtbMessages.SelectionStart = rtbMessages.Text.Length;
rtbMessages.ScrollToCaret();
}
private void PlayerOnPropertyChanged(object sender, PropertyChangedEventArgs propertyChangedEventArgs)
{
if(propertyChangedEventArgs.PropertyName == "Weapons")
{
cboWeapons.DataSource = _player.Weapons;
if(!_player.Weapons.Any())
{
cboWeapons.Visible = false;
btnUseWeapon.Visible = false;
}
}
if(propertyChangedEventArgs.PropertyName == "Potions")
{
cboPotions.DataSource = _player.Potions;
if(!_player.Potions.Any())
{
cboPotions.Visible = false;
btnUsePotion.Visible = false;
}
}
if(propertyChangedEventArgs.PropertyName == "CurrentLocation")
{
// Show/hide available movement buttons
btnNorth.Visible = (_player.CurrentLocation.LocationToNorth != null);
btnEast.Visible = (_player.CurrentLocation.LocationToEast != null);
btnSouth.Visible = (_player.CurrentLocation.LocationToSouth != null);
btnWest.Visible = (_player.CurrentLocation.LocationToWest != null);
// Display current location name and description
rtbLocation.Text = _player.CurrentLocation.Name + Environment.NewLine;
rtbLocation.Text += _player.CurrentLocation.Description + Environment.NewLine;
if(_player.CurrentLocation.MonsterLivingHere == null)
{
cboWeapons.Visible = false;
cboPotions.Visible = false;
btnUseWeapon.Visible = false;
btnUsePotion.Visible = false;
}
else
{
cboWeapons.Visible = _player.Weapons.Any();
cboPotions.Visible = _player.Potions.Any();
btnUseWeapon.Visible = _player.Weapons.Any();
btnUsePotion.Visible = _player.Potions.Any();
}
}
}
private void btnNorth_Click(object sender, EventArgs e)
{
_player.MoveNorth();
}
private void btnEast_Click(object sender, EventArgs e)
{
_player.MoveEast();
}
private void btnSouth_Click(object sender, EventArgs e)
{
_player.MoveSouth();
}
private void btnWest_Click(object sender, EventArgs e)
{
_player.MoveWest();
}
private void btnUseWeapon_Click(object sender, EventArgs e)
{
// Get the currently selected weapon from the cboWeapons ComboBox
Weapon currentWeapon = (Weapon)cboWeapons.SelectedItem;
_player.UseWeapon(currentWeapon);
}
private void btnUsePotion_Click(object sender, EventArgs e)
{
// Get the currently selected potion from the combobox
HealingPotion potion = (HealingPotion)cboPotions.SelectedItem;
_player.UsePotion(potion);
}
private void SuperAdventure_FormClosing(object sender, FormClosingEventArgs e)
{
File.WriteAllText(PLAYER_DATA_FILE_NAME, _player.ToXmlString());
}
private void cboWeapons_SelectedIndexChanged(object sender, EventArgs e)
{
_player.CurrentWeapon = (Weapon)cboWeapons.SelectedItem;
}
private void btnTrade_Click(object sender, EventArgs e)
{
}
}
}
namespace SuperAdventure
{
partial class SuperAdventure
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
if(disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.label1 = new System.Windows.Forms.Label();
this.label2 = new System.Windows.Forms.Label();
this.label3 = new System.Windows.Forms.Label();
this.label4 = new System.Windows.Forms.Label();
this.lblHitPoints = new System.Windows.Forms.Label();
this.lblGold = new System.Windows.Forms.Label();
this.lblExperience = new System.Windows.Forms.Label();
this.lblLevel = new System.Windows.Forms.Label();
this.label5 = new System.Windows.Forms.Label();
this.cboWeapons = new System.Windows.Forms.ComboBox();
this.cboPotions = new System.Windows.Forms.ComboBox();
this.btnUseWeapon = new System.Windows.Forms.Button();
this.btnUsePotion = new System.Windows.Forms.Button();
this.btnNorth = new System.Windows.Forms.Button();
this.btnEast = new System.Windows.Forms.Button();
this.btnSouth = new System.Windows.Forms.Button();
this.btnWest = new System.Windows.Forms.Button();
this.rtbLocation = new System.Windows.Forms.RichTextBox();
this.rtbMessages = new System.Windows.Forms.RichTextBox();
this.dgvInventory = new System.Windows.Forms.DataGridView();
this.dgvQuests = new System.Windows.Forms.DataGridView();
this.btnTrade = new System.Windows.Forms.Button();
((System.ComponentModel.ISupportInitialize)(this.dgvInventory)).BeginInit();
((System.ComponentModel.ISupportInitialize)(this.dgvQuests)).BeginInit();
this.SuspendLayout();
//
// label1
//
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(18, 20);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(55, 13);
this.label1.TabIndex = 0;
this.label1.Text = "Hit Points:";
//
// label2
//
this.label2.AutoSize = true;
this.label2.Location = new System.Drawing.Point(18, 46);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(32, 13);
this.label2.TabIndex = 1;
this.label2.Text = "Gold:";
//
// label3
//
this.label3.AutoSize = true;
this.label3.Location = new System.Drawing.Point(18, 74);
this.label3.Name = "label3";
this.label3.Size = new System.Drawing.Size(63, 13);
this.label3.TabIndex = 2;
this.label3.Text = "Experience:";
//
// label4
//
this.label4.AutoSize = true;
this.label4.Location = new System.Drawing.Point(18, 100);
this.label4.Name = "label4";
this.label4.Size = new System.Drawing.Size(36, 13);
this.label4.TabIndex = 3;
this.label4.Text = "Level:";
//
// lblHitPoints
//
this.lblHitPoints.AutoSize = true;
this.lblHitPoints.Location = new System.Drawing.Point(110, 19);
this.lblHitPoints.Name = "lblHitPoints";
this.lblHitPoints.Size = new System.Drawing.Size(0, 13);
this.lblHitPoints.TabIndex = 4;
//
// lblGold
//
this.lblGold.AutoSize = true;
this.lblGold.Location = new System.Drawing.Point(110, 45);
this.lblGold.Name = "lblGold";
this.lblGold.Size = new System.Drawing.Size(0, 13);
this.lblGold.TabIndex = 5;
//
// lblExperience
//
this.lblExperience.AutoSize = true;
this.lblExperience.Location = new System.Drawing.Point(110, 73);
this.lblExperience.Name = "lblExperience";
this.lblExperience.Size = new System.Drawing.Size(0, 13);
this.lblExperience.TabIndex = 6;
//
// lblLevel
//
this.lblLevel.AutoSize = true;
this.lblLevel.Location = new System.Drawing.Point(110, 99);
this.lblLevel.Name = "lblLevel";
this.lblLevel.Size = new System.Drawing.Size(0, 13);
this.lblLevel.TabIndex = 7;
//
// label5
//
this.label5.AutoSize = true;
this.label5.Location = new System.Drawing.Point(617, 531);
this.label5.Name = "label5";
this.label5.Size = new System.Drawing.Size(69, 13);
this.label5.TabIndex = 8;
this.label5.Text = "Select action";
//
// cboWeapons
//
this.cboWeapons.FormattingEnabled = true;
this.cboWeapons.Location = new System.Drawing.Point(369, 559);
this.cboWeapons.Name = "cboWeapons";
this.cboWeapons.Size = new System.Drawing.Size(121, 21);
this.cboWeapons.TabIndex = 9;
//
// cboPotions
//
this.cboPotions.FormattingEnabled = true;
this.cboPotions.Location = new System.Drawing.Point(369, 593);
this.cboPotions.Name = "cboPotions";
this.cboPotions.Size = new System.Drawing.Size(121, 21);
this.cboPotions.TabIndex = 10;
//
// btnUseWeapon
//
this.btnUseWeapon.Location = new System.Drawing.Point(620, 559);
this.btnUseWeapon.Name = "btnUseWeapon";
this.btnUseWeapon.Size = new System.Drawing.Size(75, 23);
this.btnUseWeapon.TabIndex = 11;
this.btnUseWeapon.Text = "Use";
this.btnUseWeapon.UseVisualStyleBackColor = true;
this.btnUseWeapon.Click += new System.EventHandler(this.btnUseWeapon_Click);
//
// btnUsePotion
//
this.btnUsePotion.Location = new System.Drawing.Point(620, 593);
this.btnUsePotion.Name = "btnUsePotion";
this.btnUsePotion.Size = new System.Drawing.Size(75, 23);
this.btnUsePotion.TabIndex = 12;
this.btnUsePotion.Text = "Use";
this.btnUsePotion.UseVisualStyleBackColor = true;
this.btnUsePotion.Click += new System.EventHandler(this.btnUsePotion_Click);
//
// btnNorth
//
this.btnNorth.Location = new System.Drawing.Point(493, 433);
this.btnNorth.Name = "btnNorth";
this.btnNorth.Size = new System.Drawing.Size(75, 23);
this.btnNorth.TabIndex = 13;
this.btnNorth.Text = "North";
this.btnNorth.UseVisualStyleBackColor = true;
this.btnNorth.Click += new System.EventHandler(this.btnNorth_Click);
//
// btnEast
//
this.btnEast.Location = new System.Drawing.Point(573, 457);
this.btnEast.Name = "btnEast";
this.btnEast.Size = new System.Drawing.Size(75, 23);
this.btnEast.TabIndex = 14;
this.btnEast.Text = "East";
this.btnEast.UseVisualStyleBackColor = true;
this.btnEast.Click += new System.EventHandler(this.btnEast_Click);
//
// btnSouth
//
this.btnSouth.Location = new System.Drawing.Point(493, 487);
this.btnSouth.Name = "btnSouth";
this.btnSouth.Size = new System.Drawing.Size(75, 23);
this.btnSouth.TabIndex = 15;
this.btnSouth.Text = "South";
this.btnSouth.UseVisualStyleBackColor = true;
this.btnSouth.Click += new System.EventHandler(this.btnSouth_Click);
//
// btnWest
//
this.btnWest.Location = new System.Drawing.Point(412, 457);
this.btnWest.Name = "btnWest";
this.btnWest.Size = new System.Drawing.Size(75, 23);
this.btnWest.TabIndex = 16;
this.btnWest.Text = "West";
this.btnWest.UseVisualStyleBackColor = true;
this.btnWest.Click += new System.EventHandler(this.btnWest_Click);
//
// rtbLocation
//
this.rtbLocation.Location = new System.Drawing.Point(347, 19);
this.rtbLocation.Name = "rtbLocation";
this.rtbLocation.ReadOnly = true;
this.rtbLocation.Size = new System.Drawing.Size(360, 105);
this.rtbLocation.TabIndex = 17;
this.rtbLocation.Text = "";
//
// rtbMessages
//
this.rtbMessages.Location = new System.Drawing.Point(347, 130);
this.rtbMessages.Name = "rtbMessages";
this.rtbMessages.ReadOnly = true;
this.rtbMessages.Size = new System.Drawing.Size(360, 286);
this.rtbMessages.TabIndex = 18;
this.rtbMessages.Text = "";
//
// dgvInventory
//
this.dgvInventory.AllowUserToAddRows = false;
this.dgvInventory.AllowUserToDeleteRows = false;
this.dgvInventory.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
this.dgvInventory.EditMode = System.Windows.Forms.DataGridViewEditMode.EditProgrammatically;
this.dgvInventory.Location = new System.Drawing.Point(16, 130);
this.dgvInventory.MultiSelect = false;
this.dgvInventory.Name = "dgvInventory";
this.dgvInventory.ReadOnly = true;
this.dgvInventory.Size = new System.Drawing.Size(312, 309);
this.dgvInventory.TabIndex = 19;
//
// dgvQuests
//
this.dgvQuests.AllowUserToAddRows = false;
this.dgvQuests.AllowUserToDeleteRows = false;
this.dgvQuests.AllowUserToResizeRows = false;
this.dgvQuests.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
this.dgvQuests.EditMode = System.Windows.Forms.DataGridViewEditMode.EditProgrammatically;
this.dgvQuests.Location = new System.Drawing.Point(16, 446);
this.dgvQuests.MultiSelect = false;
this.dgvQuests.Name = "dgvQuests";
this.dgvQuests.ReadOnly = true;
this.dgvQuests.Size = new System.Drawing.Size(312, 189);
this.dgvQuests.TabIndex = 20;
//
// btnTrade
//
this.btnTrade.Location = new System.Drawing.Point(493, 620);
this.btnTrade.Name = "btnTrade";
this.btnTrade.Size = new System.Drawing.Size(75, 23);
this.btnTrade.TabIndex = 21;
this.btnTrade.Text = "Trade";
this.btnTrade.UseVisualStyleBackColor = true;
this.btnTrade.Click += new System.EventHandler(this.btnTrade_Click);
//
// SuperAdventure
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(719, 651);
this.Controls.Add(this.btnTrade);
this.Controls.Add(this.dgvQuests);
this.Controls.Add(this.dgvInventory);
this.Controls.Add(this.rtbMessages);
this.Controls.Add(this.rtbLocation);
this.Controls.Add(this.btnWest);
this.Controls.Add(this.btnSouth);
this.Controls.Add(this.btnEast);
this.Controls.Add(this.btnNorth);
this.Controls.Add(this.btnUsePotion);
this.Controls.Add(this.btnUseWeapon);
this.Controls.Add(this.cboPotions);
this.Controls.Add(this.cboWeapons);
this.Controls.Add(this.label5);
this.Controls.Add(this.lblLevel);
this.Controls.Add(this.lblExperience);
this.Controls.Add(this.lblGold);
this.Controls.Add(this.lblHitPoints);
this.Controls.Add(this.label4);
this.Controls.Add(this.label3);
this.Controls.Add(this.label2);
this.Controls.Add(this.label1);
this.Name = "SuperAdventure";
this.Text = "My Game";
this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.SuperAdventure_FormClosing);
((System.ComponentModel.ISupportInitialize)(this.dgvInventory)).EndInit();
((System.ComponentModel.ISupportInitialize)(this.dgvQuests)).EndInit();
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.Label label3;
private System.Windows.Forms.Label label4;
private System.Windows.Forms.Label lblHitPoints;
private System.Windows.Forms.Label lblGold;
private System.Windows.Forms.Label lblExperience;
private System.Windows.Forms.Label lblLevel;
private System.Windows.Forms.Label label5;
private System.Windows.Forms.ComboBox cboWeapons;
private System.Windows.Forms.ComboBox cboPotions;
private System.Windows.Forms.Button btnUseWeapon;
private System.Windows.Forms.Button btnUsePotion;
private System.Windows.Forms.Button btnNorth;
private System.Windows.Forms.Button btnEast;
private System.Windows.Forms.Button btnSouth;
private System.Windows.Forms.Button btnWest;
private System.Windows.Forms.RichTextBox rtbLocation;
private System.Windows.Forms.RichTextBox rtbMessages;
private System.Windows.Forms.DataGridView dgvInventory;
private System.Windows.Forms.DataGridView dgvQuests;
private System.Windows.Forms.Button btnTrade;
}
}
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