admin.cs

这是用SQL数据库做的学生信息管理系统。简明

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

namespace 学生与成绩
{
	/// <summary>
	/// admin 的摘要说明。
	/// </summary>
	public class admin : System.Windows.Forms.Form
	{
		private DataSet ds=new DataSet();
		private string sendStrSQL="select * from 用户";
		private DataTable myTable;
		private DataRow myRow;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.Button btnConfirm;
		private System.Windows.Forms.Button btnCancel;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public admin()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();
			LinkDataBase link=new LinkDataBase();
			string sendTableName="用户";
			this.ds=link.SelectDataBase(sendStrSQL,sendTableName);
			myTable=ds.Tables[0];

			

			//
			// 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 );
		}

		#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()
		{
			this.label1 = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.textBox2 = new System.Windows.Forms.TextBox();
			this.btnConfirm = new System.Windows.Forms.Button();
			this.btnCancel = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(26, 40);
			this.label1.Name = "label1";
			this.label1.TabIndex = 0;
			this.label1.Text = "用户名";
			this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(26, 80);
			this.label2.Name = "label2";
			this.label2.TabIndex = 1;
			this.label2.Text = "密码";
			this.label2.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(130, 42);
			this.textBox1.Name = "textBox1";
			this.textBox1.ReadOnly = true;
			this.textBox1.TabIndex = 2;
			this.textBox1.Text = "管理员";
			// 
			// textBox2
			// 
			this.textBox2.Location = new System.Drawing.Point(130, 80);
			this.textBox2.Name = "textBox2";
			this.textBox2.PasswordChar = '*';
			this.textBox2.TabIndex = 0;
			this.textBox2.Text = "";
			// 
			// btnConfirm
			// 
			this.btnConfirm.Location = new System.Drawing.Point(40, 136);
			this.btnConfirm.Name = "btnConfirm";
			this.btnConfirm.TabIndex = 3;
			this.btnConfirm.Text = "确定";
			this.btnConfirm.Click += new System.EventHandler(this.btnConfirm_Click);
			// 
			// btnCancel
			// 
			this.btnCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
			this.btnCancel.Location = new System.Drawing.Point(143, 136);
			this.btnCancel.Name = "btnCancel";
			this.btnCancel.TabIndex = 4;
			this.btnCancel.Text = "取消";
			this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
			// 
			// admin
			// 
			this.AcceptButton = this.btnConfirm;
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.CancelButton = this.btnCancel;
			this.ClientSize = new System.Drawing.Size(256, 182);
			this.Controls.Add(this.btnCancel);
			this.Controls.Add(this.btnConfirm);
			this.Controls.Add(this.textBox2);
			this.Controls.Add(this.textBox1);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.label1);
			this.Name = "admin";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "添加用户登录";
			this.ResumeLayout(false);

		}
		#endregion

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

			for(int i=0;i<myTable.Rows.Count;i++)
			{
				myRow=myTable.Rows[i];
				if(this.textBox2.Text.Trim()==myRow[2].ToString().Trim()&&this.textBox1.Text.Trim()=="管理员")
				{
					MainFrm.lg=true;
					this.Close();
					return;
				}
				else
				{
					MessageBox.Show("密码输入不正确","信息");
					return;
				}
			}
		}

		private void btnCancel_Click(object sender, System.EventArgs e)
		{
			MainFrm.lg=false;
			this.Close();
		}
	}
}