checkpasswordframe.cs

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#region 命名空间
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
#endregion
namespace WindowsApplication
{
	#region 检查密码类CheckPassword
	/// <summary>
	/// CheckPasswordFrame 的摘要说明。
	/// </summary>
	public class CheckPasswordFrame : System.Windows.Forms.Form
	{
		#region 控件集合...
		private System.Windows.Forms.Label label1;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.Button button2;
		private System.Windows.Forms.Button btnOK;
		private System.Windows.Forms.TextBox textUserName;
		private System.Windows.Forms.TextBox textPassword;
		#endregion
		#region 变量定义...
		public static bool blpassword=false;
		private ConnectionData conn=new ConnectionData();
		private string searchStr="select 用户名称,密码 from System_UserTable";
		private DataTable tempTable=new DataTable();
		#endregion
		#region 类构造函数
		public CheckPasswordFrame()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}
		#endregion
		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(CheckPasswordFrame));
			this.label1 = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.textUserName = new System.Windows.Forms.TextBox();
			this.textPassword = new System.Windows.Forms.TextBox();
			this.label3 = new System.Windows.Forms.Label();
			this.btnOK = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.label1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(128)), ((System.Byte)(128)), ((System.Byte)(255)));
			this.label1.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
			this.label1.Font = new System.Drawing.Font("宋体", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
			this.label1.Location = new System.Drawing.Point(0, 0);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(278, 32);
			this.label1.TabIndex = 0;
			this.label1.Text = "检查密码";
			this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			// 
			// label2
			// 
			this.label2.ForeColor = System.Drawing.SystemColors.ControlText;
			this.label2.Location = new System.Drawing.Point(24, 56);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(64, 24);
			this.label2.TabIndex = 1;
			this.label2.Text = "用户名称:";
			this.label2.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			// 
			// textUserName
			// 
			this.textUserName.Location = new System.Drawing.Point(104, 56);
			this.textUserName.Name = "textUserName";
			this.textUserName.Size = new System.Drawing.Size(144, 21);
			this.textUserName.TabIndex = 2;
			this.textUserName.Text = "";
			// 
			// textPassword
			// 
			this.textPassword.Location = new System.Drawing.Point(104, 96);
			this.textPassword.Name = "textPassword";
			this.textPassword.PasswordChar = '%';
			this.textPassword.Size = new System.Drawing.Size(144, 21);
			this.textPassword.TabIndex = 4;
			this.textPassword.Text = "";
			// 
			// label3
			// 
			this.label3.ForeColor = System.Drawing.SystemColors.ControlText;
			this.label3.Location = new System.Drawing.Point(24, 96);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(64, 24);
			this.label3.TabIndex = 3;
			this.label3.Text = "密码:";
			this.label3.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			// 
			// btnOK
			// 
			this.btnOK.Cursor = System.Windows.Forms.Cursors.Hand;
			this.btnOK.DialogResult = System.Windows.Forms.DialogResult.OK;
			this.btnOK.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
			this.btnOK.ForeColor = System.Drawing.SystemColors.ControlText;
			this.btnOK.Location = new System.Drawing.Point(64, 144);
			this.btnOK.Name = "btnOK";
			this.btnOK.TabIndex = 5;
			this.btnOK.Text = "确定(&C)";
			this.btnOK.Click += new System.EventHandler(this.btnOK_Click);
			// 
			// button2
			// 
			this.button2.Cursor = System.Windows.Forms.Cursors.Hand;
			this.button2.DialogResult = System.Windows.Forms.DialogResult.Cancel;
			this.button2.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
			this.button2.ForeColor = System.Drawing.SystemColors.ControlText;
			this.button2.Location = new System.Drawing.Point(168, 144);
			this.button2.Name = "button2";
			this.button2.TabIndex = 6;
			this.button2.Text = "取消(&C)";
			// 
			// CheckPasswordFrame
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.BackColor = System.Drawing.SystemColors.ActiveCaptionText;
			this.CancelButton = this.button2;
			this.ClientSize = new System.Drawing.Size(274, 191);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.btnOK);
			this.Controls.Add(this.textPassword);
			this.Controls.Add(this.textUserName);
			this.Controls.Add(this.label3);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.label1);
			this.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
			this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
			this.MaximizeBox = false;
			this.MinimizeBox = false;
			this.Name = "CheckPasswordFrame";
			this.ShowInTaskbar = false;
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "CheckPasswordFrame";
			this.Load += new System.EventHandler(this.CheckPasswordFrame_Load);
			this.ResumeLayout(false);

		}
		#endregion
		#region 初始化事件...
		private void CheckPasswordFrame_Load(object sender, System.EventArgs e)
		{
			#region 初始化变量
			this.textPassword.Focus();
			try
			{
                this.textUserName.Text=landFrame.strUserName;
				tempTable=this.ExcuteSql(searchStr,"System_UserTable");
			}
			catch(Exception ele)
			{
				MessageBox.Show(this,ele.ToString(),"提示信息",MessageBoxButtons.OK,MessageBoxIcon.Question);
			}
			#endregion
		}
		#endregion
		#region 检查非空函数
		private bool CheckNull()
		{
			if(this.textUserName.Text.Equals(""))
			{
				MessageBox.Show(this,"用户名称不能为空!!!","提示信息",MessageBoxButtons.OK,MessageBoxIcon.Information);
				this.textUserName.Focus();
				return false;
			}
			else if(this.textPassword.Text.Equals(""))
			{
				MessageBox.Show(this,"密码不能为空!!!","提示信息",MessageBoxButtons.OK,MessageBoxIcon.Information);
				this.textPassword.Focus();
				return false;
			}
			return true;
		}
		#endregion
		#region 清空函数
		private void ClearText()
		{
			this.textPassword.Text="";
			this.textUserName.Text="";
		}
		#endregion
		#region 数据库处理函数
		private DataTable ExcuteSql(string strSql,string tableName)
		{
			DataSet dsSet=new DataSet();
			DataTable dsTable=new DataTable();
			try
			{
				dsSet=conn.ExcuteDataSetResult(strSql,tableName);
				dsTable=dsSet.Tables[0];
			}
			catch(Exception eles)
			{
				MessageBox.Show(this,eles.ToString(),"提示信息",MessageBoxButtons.OK,MessageBoxIcon.Information);
			}
			return dsTable;
		}
		#endregion
		#region 确定事件...
		private void btnOK_Click(object sender, System.EventArgs e)
		{
			try
			{
				if(this.CheckNull().Equals(false))
				{
					return;
				}
				CheckPasswordFrame.blpassword=ConfireFunction(tempTable);
			}
			catch(Exception ele)
			{
				MessageBox.Show(this,ele.ToString(),"提示信息",MessageBoxButtons.OK,MessageBoxIcon.Question);
			}
		}
		#endregion
		#region 确定函数...
		private bool ConfireFunction(DataTable tableName)
		{
			bool f=false;
			try
			{
				for(int i=0;i<tableName.Rows.Count;i++)
				{
					if(tableName.Rows[i][0].ToString().Equals(this.textUserName.Text.ToString()) && tableName.Rows[i][1].ToString().Equals(MD4.EncryptString(this.textPassword.Text.ToString())))
					{
						MessageBox.Show(this,"密码正确啦!!!","提示信息",MessageBoxButtons.OK,MessageBoxIcon.Information);
						f=true;
						return f;
					}
					f=false;
				}
				if(f.Equals(false))
				{
					MessageBox.Show(this,"密码不正确啦!!!","提示信息",MessageBoxButtons.OK,MessageBoxIcon.Information);
					this.textPassword.Text="";
					this.textPassword.Focus();
					return f ;
				}
			}
			catch(Exception ese)
			{
				MessageBox.Show(this,ese.ToString(),"提示信息",MessageBoxButtons.OK,MessageBoxIcon.Information);
			}
			return f;
		}
		#endregion
	}
	#endregion
}