form1.cs

C#开发教程 由浅入深 配有实例 是初学者的好帮手

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

using System.Security.Permissions;

namespace WinTestPerms
{
    /// <summary>
    /// Summary description for Form1.
    /// </summary>
    public class Form1 : System.Windows.Forms.Form
    {
        private System.Windows.Forms.Button btnTestPerms;
        private System.Windows.Forms.TextBox textBox1;
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;

        public Form1()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();

            //
            // TODO: Add any constructor code after InitializeComponent call
            //
        }

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if (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.btnTestPerms = new System.Windows.Forms.Button();
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.SuspendLayout();
            // 
            // btnTestPerms
            // 
            this.btnTestPerms.Location = new System.Drawing.Point(8, 16);
            this.btnTestPerms.Name = "btnTestPerms";
            this.btnTestPerms.TabIndex = 0;
            this.btnTestPerms.Text = "TestPerms";
            this.btnTestPerms.Click += new System.EventHandler(this.btnTestPerms_Click);
            // 
            // textBox1
            // 
            this.textBox1.Location = new System.Drawing.Point(8, 48);
            this.textBox1.Multiline = true;
            this.textBox1.Name = "textBox1";
            this.textBox1.ReadOnly = true;
            this.textBox1.ScrollBars = System.Windows.Forms.ScrollBars.Both;
            this.textBox1.Size = new System.Drawing.Size(352, 208);
            this.textBox1.TabIndex = 2;
            this.textBox1.Text = "";
            // 
            // Form1
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(6, 15);
            this.ClientSize = new System.Drawing.Size(368, 268);
            this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                          this.textBox1,
                                                                          this.btnTestPerms});
            this.Name = "Form1";
            this.Text = "WinTestPerms";
            this.ResumeLayout(false);

        }
        #endregion

        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main() 
        {
            Application.Run(new Form1());
        }

        private void btnTestPerms_Click(object sender, System.EventArgs e)
        {
            try
            {
                FileIOPermission p = new FileIOPermission(
                  FileIOPermissionAccess.Read, "C:\\WINNT");
//                  FileIOPermissionAccess.AllAccess, "C:\\");
//                    PermissionState.Unrestricted);
                p.Demand();
                textBox1.Text += "\r\nFileIOPermission OK\r\n";
            }
            catch (Exception ex)
            {
                textBox1.Text += "\r\n" +ex.Message + "\r\n";
            }
            try
            {
                EnvironmentPermission p = new EnvironmentPermission(
                    EnvironmentPermissionAccess.Read, "USERNAME");
//                    PermissionState.Unrestricted);
                p.Demand();
                textBox1.Text += "\r\nEnvironmentPermission OK\r\n";
            }
            catch (Exception ex)
            {
                textBox1.Text += "\r\n" + ex.Message + "\r\n";
            }
        }
    }
}