login.cs

进销存管理系统软件

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


namespace my进销售
{
	/// <summary>
	/// login 的摘要说明。
	/// </summary>
	public class login : System.Windows.Forms.Form
	{
		public static bool bllogin=false;
		public static string strdepartment="";
		private DataSet dss=new DataSet();
		private DataTable myTable;
		public static string struser;
		private DataRow myRow;
		string sql="select * from 用户清单";
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.TextBox name;
		private System.Windows.Forms.TextBox pass;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Button button2;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public login()
		{
			//
			// 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
			//
			Database ds=new Database();
			string  SQlname="用户清单";
			this.dss=ds.selectdata(SQlname,sql);
			this.myTable=dss.Tables[0];
		}

		/// <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.name = new System.Windows.Forms.TextBox();
			this.pass = new System.Windows.Forms.TextBox();
			this.button1 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(56, 24);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(56, 23);
			this.label1.TabIndex = 0;
			this.label1.Text = "用户名";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(56, 64);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(48, 23);
			this.label2.TabIndex = 1;
			this.label2.Text = "密 码";
			// 
			// name
			// 
			this.name.Location = new System.Drawing.Point(112, 24);
			this.name.Name = "name";
			this.name.TabIndex = 2;
			this.name.Text = "";
			// 
			// pass
			// 
			this.pass.Location = new System.Drawing.Point(112, 64);
			this.pass.Name = "pass";
			this.pass.TabIndex = 3;
			this.pass.Text = "";
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(56, 104);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(60, 23);
			this.button1.TabIndex = 4;
			this.button1.Text = "提 交";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(144, 104);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(60, 23);
			this.button2.TabIndex = 5;
			this.button2.Text = "取 消";
			// 
			// login
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(292, 166);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.pass);
			this.Controls.Add(this.name);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.label1);
			this.Name = "login";
			this.Text = "login";
			this.ResumeLayout(false);

		}
		#endregion

		private void button1_Click(object sender, System.EventArgs e)
		{
			for(int i=0;i<myTable.Rows.Count;i++)
			{
				this.myRow=myTable.Rows[i];
				if (myRow[0].ToString().Trim()==this.name.Text.ToString().Trim() && myRow[4].ToString().Trim()==this.pass.Text.ToString().Trim())
				{
					bllogin=true;
					struser=this.name.Text.ToString().Trim();
					strdepartment=myRow[3].ToString().Trim();
					this.Close();
					return;

				}
				



			}
			MessageBox.Show("您输入的用户名和密码有错误");


		
		}


	}
}