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C# 入門指南 - encryptgui.cs




encryptgui.cs 的程式原始碼如下

using System;
using System.Windows.Forms;
using System.Drawing;
using System.IO;
using System.Text;

using Encryptor;

class EncryptGUI : Form {
    private Label inputLabel;
    private Label outputLabel;
    private TextBox inputField;
    private TextBox outputField;
    private Button newButton;
    private Button loadButton;
    private Button saveButton;
    private Button encodeButton;
    private Button decodeButton;
    private Button clearButton;
    private Button copyButton;
    private Label displayLabel;
    
    private string inputText;
    private string outputText;
    private Encrypt e;

    public EncryptGUI() {
        this.inputLabel = new Label();
        this.outputLabel = new Label();
        this.inputField = new TextBox();
        this.outputField = new TextBox();
        this.newButton = new Button();
        this.loadButton = new Button();
        this.saveButton = new Button();
        this.encodeButton = new Button();
        this.decodeButton = new Button();
        this.clearButton = new Button();
        this.copyButton = new Button();
        this.displayLabel = new Label();
        this.SuspendLayout();

        this.inputLabel.Location = new Point(10, 10);
        this.inputLabel.Font = new Font("Helvetica", 12F);
        this.inputLabel.Name = "inputlabel";
        this.inputLabel.Size = new Size(60, 20);
        this.inputLabel.Text = "Input:"; 
         
        this.outputLabel.Location = new Point(10, 40);
        this.outputLabel.Font = new Font("Helvetica", 12F);
        this.outputLabel.Name = "outputlabel";
        this.outputLabel.Size = new Size(60, 20);
        this.outputLabel.Text = "Output:"; 
         
        this.inputField.Location = new Point(80, 10);
        this.inputField.Name = "inputField";
        this.inputField.Size = new Size(480, 20);
        this.inputField.TabIndex = 0;
        this.inputField.Text = "";
        this.inputField.KeyPress += new KeyPressEventHandler(this.inputField_KeyPress);
         
        this.outputField.Location = new Point(80, 40);
        this.outputField.Name = "outputField";
        this.outputField.Size = new Size(480, 20);
        this.outputField.Enabled = false;
        this.outputField.Text = "";

        this.newButton.Location = new Point(10, 70);
        this.newButton.Name = "newButton";
        this.newButton.TabIndex = 1;
        this.newButton.Text = "New";
        this.newButton.Click += new EventHandler(this.newButton_Click);
         
        this.loadButton.Location = new Point(90, 70);
        this.loadButton.Name = "loadButton";
        this.loadButton.TabIndex = 2;
        this.loadButton.Text = "Load";
        this.loadButton.Click += new EventHandler(this.loadButton_Click);
         
        this.saveButton.Location = new Point(170, 70);
        this.saveButton.Name = "saveButton";
        this.saveButton.TabIndex = 3;
        this.saveButton.Text = "Save";
        this.saveButton.Click += new EventHandler(this.saveButton_Click);
         
        this.encodeButton.Location = new Point(250, 70);
        this.encodeButton.Name = "encodeButton";
        this.encodeButton.TabIndex = 4;
        this.encodeButton.Text = "Encode";
        this.encodeButton.Click += new EventHandler(this.encodeButton_Click);
         
        this.decodeButton.Location = new Point(330, 70);
        this.decodeButton.Name = "decodeButton";
        this.decodeButton.TabIndex = 5;
        this.decodeButton.Text = "Decode";
        this.decodeButton.Click += new EventHandler(this.decodeButton_Click);
         
        this.clearButton.Location = new Point(410, 70);
        this.clearButton.Name = "clearButton";
        this.clearButton.TabIndex = 6;
        this.clearButton.Text = "Clear";
        this.clearButton.Click += new EventHandler(this.clearButton_Click);
         
        this.copyButton.Location = new Point(490, 70);
        this.copyButton.Name = "copyButton";
        this.copyButton.TabIndex = 7;
        this.copyButton.Text = "Copy";
        this.copyButton.Click += new EventHandler(this.copyButton_Click);
         
        this.displayLabel.Location = new Point(10, 100);
        this.displayLabel.Font = new Font("Courier", 12F);
        this.displayLabel.Name = "displaylabel";
        this.displayLabel.Size = new Size(500, 20);
        this.displayLabel.Text = "something happened..."; 

        this.ClientSize = new Size(580, 125);
        this.Controls.Add(this.inputLabel);
        this.Controls.Add(this.outputLabel);
        this.Controls.Add(this.inputField);
        this.Controls.Add(this.outputField);
        this.Controls.Add(this.newButton);
        this.Controls.Add(this.loadButton);
        this.Controls.Add(this.saveButton);
        this.Controls.Add(this.encodeButton);
        this.Controls.Add(this.decodeButton);
        this.Controls.Add(this.clearButton);
        this.Controls.Add(this.copyButton);
        this.Controls.Add(this.displayLabel);
        this.BackColor = Color.LightGray;
        this.Name = "demoguiname";
        this.Text = "demogui";
        
        this.inputText = "";
        this.outputText ="";
        this.e = null;

        this.ResumeLayout(false);
    }
     
    private void inputField_KeyPress(object sender, EventArgs e) {
        this.inputText = this.inputField.Text;
        this.displayLabel.Text = "Your input is \"" + this.inputText + "\".";
    }
     
    private void newButton_Click(object sender, EventArgs e) {
        this.e = new Encrypt();
        this.displayLabel.Text = this.e.Code;
    }
    
    private void loadButton_Click(object sender, EventArgs e) {
        string path = @"data.txt";
        
        if (File.Exists(path)) {
            try {
                string code = File.ReadAllText(path, Encoding.UTF8);
                this.e.Code = code;
                this.displayLabel.Text = "This is Load button. Encrypt object is loaded.";
            }
            catch (NullReferenceException nre) {
                this.displayLabel.Text = "This is Load button. Encrypt object is not loaded.";
            }
        }
        else {
            this.displayLabel.Text = "This is Load button. There is no file.";
        }
        
    }
    
    private void saveButton_Click(object sender, EventArgs e) {
        string path = @"data.txt";
        
        try {
            File.WriteAllText(path, this.e.Code);
            this.displayLabel.Text = "This is Save button. Encrypt object is saved.";
        }
        catch (NullReferenceException nre) {
            this.displayLabel.Text = "This is Save button. There is no Encrypt Object.";
        }
    }
    
    private void encodeButton_Click(object sender, EventArgs e) {
        if (this.inputText == "") {
            this.displayLabel.Text = "This is Encode button. No input string!!";
        }
        else {
            try {
                this.outputText = this.e.toEncode(this.inputText);
                this.outputField.Text = this.outputText;
                this.displayLabel.Text = "This is Encode button. The result is above.";
            }
            catch (NullReferenceException nre) {
                this.displayLabel.Text = "This is Encode button. No Encrypt object!!";
            }
        }
    }
    
    private void decodeButton_Click(object sender, EventArgs e) {
        if (this.inputText == "") {
            this.displayLabel.Text = "This is Decode button. No input string!!";
        }
        else {
            try {
                this.outputText = this.e.toDecode(this.inputText);
                this.outputField.Text = this.outputText;
                this.displayLabel.Text = "This is Decode button. The result is above.";
            }
            catch (NullReferenceException nre) {
                this.displayLabel.Text = "This is Decode button. No Encrypt object!!";
            }
        }
    }
    
    private void clearButton_Click(object sender, EventArgs e) {
        this.inputText = "";
        this.outputText = "";
        this.inputField.Text = "";
        this.outputField.Text = "";
        this.displayLabel.Text = "This is Clear button. Everything is clear.";
    }
    
    private void copyButton_Click(object sender, EventArgs e) {
        if (this.outputText != "") {
            Clipboard.SetText(this.outputText);  
            this.displayLabel.Text = "This is Copy button. Result is copied.";
        }
        else {
            this.displayLabel.Text = "This is Copy button. Result is not copied.";
        }
    }

    [STAThread]
    public static void Main() {
        Application.EnableVisualStyles();
        Application.Run(new EncryptGUI());
    }
}

/* 《程式語言教學誌》的範例程式
    http://pydoing.blogspot.com/
    檔名:encryptgui.cs
    功能:示範 C# 程式 
    作者:張凱慶
    時間:西元 2012 年 10 月 */


您可以繼續參考
範例程式碼


相關目錄
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參考資料
C# 程式設計手冊
C# Programming
Start - mono
Mono Documentation

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