frmmain.cs

稿件名称：基于Visual C# 2005的自定义登录验证框的实现 源代码名称：source code 调试环境：Win XP；.Net

//Copyright (C) 2002 Microsoft Corporation
//All rights reserved.
//THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER 
//EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF 
//MERCHANTIBILITY AND/OR FITNESS FOR A PARTICULAR PURPOSE.
//Requires the Trial or Release version of Visual Studio .NET Professional (or greater).

using System;
using System.Windows.Forms;
using System.Threading;
using System.Data;

public class frmMain: System.Windows.Forms.Form {

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


#region " Windows Form Designer generated code "

	public frmMain() 
	{
		//This call is required by the Windows Form Designer.

		InitializeComponent();

		//Add any initialization after the InitializeComponent() call
		// So that we only need to set the title of the application once,
		// we use the AssemblyInfo class (defined in the AssemblyInfo.cs file)
		// to read the AssemblyTitle attribute.

		AssemblyInfo ainfo = new AssemblyInfo();

		this.Text = ainfo.Title;

		this.mnuAbout.Text = string.Format("&About {0} ...", ainfo.Title);

	}

	//Form overrides dispose to clean up the component list.

	protected override void Dispose(bool disposing) {

		if (disposing) {

			if (components != null) {

				components.Dispose();

			}

		}

		base.Dispose(disposing);

	}

	//Required by the Windows Form Designer

	private System.ComponentModel.IContainer components = null;

	//NOTE: The following procedure is required by the Windows Form Designer

	//It can be modified using the Windows Form Designer.  

	//Do not modify it using the code editor.

	private System.Windows.Forms.MainMenu mnuMain;

	private System.Windows.Forms.MenuItem mnuFile;

	private System.Windows.Forms.MenuItem mnuExit;

	private System.Windows.Forms.MenuItem mnuHelp;

	private System.Windows.Forms.MenuItem mnuAbout;

    private System.Windows.Forms.DataGrid dgUsers;

    private System.Windows.Forms.Label Label1;

    private void InitializeComponent() {
        this.components = new System.ComponentModel.Container();
        System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(frmMain));
        this.mnuMain = new System.Windows.Forms.MainMenu(this.components);
        this.mnuFile = new System.Windows.Forms.MenuItem();
        this.mnuExit = new System.Windows.Forms.MenuItem();
        this.mnuHelp = new System.Windows.Forms.MenuItem();
        this.mnuAbout = new System.Windows.Forms.MenuItem();
        this.dgUsers = new System.Windows.Forms.DataGrid();
        this.Label1 = new System.Windows.Forms.Label();
        ((System.ComponentModel.ISupportInitialize)(this.dgUsers)).BeginInit();
        this.SuspendLayout();
        // 
        // mnuMain
        // 
        this.mnuMain.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.mnuFile,
            this.mnuHelp});
        // 
        // mnuFile
        // 
        this.mnuFile.Index = 0;
        this.mnuFile.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.mnuExit});
        resources.ApplyResources(this.mnuFile, "mnuFile");
        // 
        // mnuExit
        // 
        this.mnuExit.Index = 0;
        resources.ApplyResources(this.mnuExit, "mnuExit");
        this.mnuExit.Click += new System.EventHandler(this.mnuExit_Click);
        // 
        // mnuHelp
        // 
        this.mnuHelp.Index = 1;
        this.mnuHelp.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.mnuAbout});
        resources.ApplyResources(this.mnuHelp, "mnuHelp");
        // 
        // mnuAbout
        // 
        this.mnuAbout.Index = 0;
        resources.ApplyResources(this.mnuAbout, "mnuAbout");
        this.mnuAbout.Click += new System.EventHandler(this.mnuAbout_Click);
        // 
        // dgUsers
        // 
        resources.ApplyResources(this.dgUsers, "dgUsers");
        this.dgUsers.DataMember = "";
        this.dgUsers.HeaderForeColor = System.Drawing.SystemColors.ControlText;
        this.dgUsers.Name = "dgUsers";
        // 
        // Label1
        // 
        resources.ApplyResources(this.Label1, "Label1");
        this.Label1.Name = "Label1";
        // 
        // frmMain
        // 
        resources.ApplyResources(this, "$this");
        this.Controls.Add(this.Label1);
        this.Controls.Add(this.dgUsers);
        this.MaximizeBox = false;
        this.Menu = this.mnuMain;
        this.Name = "frmMain";
        this.Load += new System.EventHandler(this.frmMain_Load);
        ((System.ComponentModel.ISupportInitialize)(this.dgUsers)).EndInit();
        this.ResumeLayout(false);

    }

#endregion

#region " Standard Menu Code "

	

	

	// This code simply shows the About form.

	private void mnuAbout_Click(object sender, System.EventArgs e) {

		// Open the About form in Dialog Mode

		frmAbout frm = new frmAbout();

		frm.ShowDialog(this);

		frm.Dispose();

	}

	// This code will close the form.

	private void mnuExit_Click(object sender, System.EventArgs e) {

		// Close the current form

		this.Close();

	}

#endregion

    private void frmMain_Load(object sender, System.EventArgs e) {

 		if ((Thread.CurrentPrincipal.IsInRole("Teacher")) || 
			(Thread.CurrentPrincipal.IsInRole(@"BuiltIn\Administrators"))) 
		{
				DataSet dsUsers = new DataSet();
			dsUsers.ReadXml(@"..\..\users.xml");

            dgUsers.CaptionText = "用户账号";
			dgUsers.DataSource = dsUsers.Tables[0];
		}
		else 
		{
            MessageBox.Show("您必须是老师或本地管理员账户" +
                    "查看后台账户数据", "权限不够！",
                    MessageBoxButtons.OK, MessageBoxIcon.Exclamation);

		}

    }

}