【C#】URLパーセントエンコード・デコードツール

using System;
using System.Net;
using System.Windows.Forms;

namespace UrlCoder
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnEncode_Click(object sender, EventArgs e)
        {
            string encoded = PercentEncode(rtbEncodeFrom.Text);
            rtbEncodeTo.Text = encoded;
        }

        private void btnDecode_Click(object sender, EventArgs e)
        {
            string decoded = PercentDecode(rtbDecodeFrom.Text);
            rtbDecodeTo.Text = decoded;
        }

        // エンコード
        private static string PercentEncode(string input)
        {
            return WebUtility.UrlEncode(input);
        }

        // デコード
        private static string PercentDecode(string encoded)
        {
            return WebUtility.UrlDecode(encoded);
        }
    }
}

namespace UrlCoder
{
    partial class Form1
    {
        /// <summary>
        /// 必要なデザイナー変数です。
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// 使用中のリソースをすべてクリーンアップします。
        /// </summary>
        /// <param name="disposing">マネージド リソースを破棄する場合は true を指定し、その他の場合は false を指定します。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows フォーム デザイナーで生成されたコード

        /// <summary>
        /// デザイナー サポートに必要なメソッドです。このメソッドの内容を
        /// コード エディターで変更しないでください。
        /// </summary>
        private void InitializeComponent()
        {
            this.rtbEncodeFrom = new System.Windows.Forms.RichTextBox();
            this.label1 = new System.Windows.Forms.Label();
            this.rtbEncodeTo = new System.Windows.Forms.RichTextBox();
            this.rtbDecodeFrom = new System.Windows.Forms.RichTextBox();
            this.label2 = new System.Windows.Forms.Label();
            this.rtbDecodeTo = new System.Windows.Forms.RichTextBox();
            this.btnEncode = new System.Windows.Forms.Button();
            this.btnDecode = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // rtbEncodeFrom
            // 
            this.rtbEncodeFrom.Font = new System.Drawing.Font("ＭＳ ゴシック", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
            this.rtbEncodeFrom.Location = new System.Drawing.Point(16, 36);
            this.rtbEncodeFrom.Name = "rtbEncodeFrom";
            this.rtbEncodeFrom.Size = new System.Drawing.Size(245, 139);
            this.rtbEncodeFrom.TabIndex = 0;
            this.rtbEncodeFrom.Text = "";
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.Font = new System.Drawing.Font("UD デジタル 教科書体 NP-B", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
            this.label1.Location = new System.Drawing.Point(12, 9);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(167, 24);
            this.label1.TabIndex = 1;
            this.label1.Text = "URL エンコード";
            // 
            // rtbEncodeTo
            // 
            this.rtbEncodeTo.Font = new System.Drawing.Font("ＭＳ ゴシック", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
            this.rtbEncodeTo.Location = new System.Drawing.Point(306, 36);
            this.rtbEncodeTo.Name = "rtbEncodeTo";
            this.rtbEncodeTo.Size = new System.Drawing.Size(245, 139);
            this.rtbEncodeTo.TabIndex = 2;
            this.rtbEncodeTo.Text = "";
            // 
            // rtbDecodeFrom
            // 
            this.rtbDecodeFrom.Font = new System.Drawing.Font("ＭＳ ゴシック", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
            this.rtbDecodeFrom.Location = new System.Drawing.Point(16, 222);
            this.rtbDecodeFrom.Name = "rtbDecodeFrom";
            this.rtbDecodeFrom.Size = new System.Drawing.Size(245, 139);
            this.rtbDecodeFrom.TabIndex = 3;
            this.rtbDecodeFrom.Text = "";
            // 
            // label2
            // 
            this.label2.AutoSize = true;
            this.label2.Font = new System.Drawing.Font("UD デジタル 教科書体 NP-B", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
            this.label2.Location = new System.Drawing.Point(12, 190);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(146, 24);
            this.label2.TabIndex = 4;
            this.label2.Text = "URL デコード";
            // 
            // rtbDecodeTo
            // 
            this.rtbDecodeTo.Font = new System.Drawing.Font("ＭＳ ゴシック", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(128)));
            this.rtbDecodeTo.Location = new System.Drawing.Point(306, 222);
            this.rtbDecodeTo.Name = "rtbDecodeTo";
            this.rtbDecodeTo.Size = new System.Drawing.Size(245, 139);
            this.rtbDecodeTo.TabIndex = 5;
            this.rtbDecodeTo.Text = "";
            // 
            // btnEncode
            // 
            this.btnEncode.Font = new System.Drawing.Font("UD デジタル 教科書体 NP-B", 15.75F, System.Drawing.FontStyle.Bold);
            this.btnEncode.Location = new System.Drawing.Point(267, 36);
            this.btnEncode.Name = "btnEncode";
            this.btnEncode.Size = new System.Drawing.Size(33, 139);
            this.btnEncode.TabIndex = 6;
            this.btnEncode.Text = "→";
            this.btnEncode.UseVisualStyleBackColor = true;
            this.btnEncode.Click += new System.EventHandler(this.btnEncode_Click);
            // 
            // btnDecode
            // 
            this.btnDecode.Font = new System.Drawing.Font("UD デジタル 教科書体 NP-B", 15.75F, System.Drawing.FontStyle.Bold);
            this.btnDecode.Location = new System.Drawing.Point(267, 222);
            this.btnDecode.Name = "btnDecode";
            this.btnDecode.Size = new System.Drawing.Size(33, 139);
            this.btnDecode.TabIndex = 7;
            this.btnDecode.Text = "→";
            this.btnDecode.UseVisualStyleBackColor = true;
            this.btnDecode.Click += new System.EventHandler(this.btnDecode_Click);
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(563, 373);
            this.Controls.Add(this.btnDecode);
            this.Controls.Add(this.btnEncode);
            this.Controls.Add(this.rtbDecodeTo);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.rtbDecodeFrom);
            this.Controls.Add(this.rtbEncodeTo);
            this.Controls.Add(this.label1);
            this.Controls.Add(this.rtbEncodeFrom);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
            this.MaximizeBox = false;
            this.Name = "Form1";
            this.Text = "URL Coder";
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.RichTextBox rtbEncodeFrom;
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.RichTextBox rtbEncodeTo;
        private System.Windows.Forms.RichTextBox rtbDecodeFrom;
        private System.Windows.Forms.Label label2;
        private System.Windows.Forms.RichTextBox rtbDecodeTo;
        private System.Windows.Forms.Button btnEncode;
        private System.Windows.Forms.Button btnDecode;
    }
}