Windows编程

开发平台：
C/C++

lpgl.cs：源码内容
							using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.OleDb;
namespace WindowsApplication1
{
	/// <summary>
	/// lpgl 的摘要说明。
	/// </summary>
	public class lpgl : System.Windows.Forms.Form
	{
		private System.Windows.Forms.DataGrid dataGrid1;
		private System.Windows.Forms.Button button3;
		private System.Windows.Forms.Button button4;
		private System.Windows.Forms.Button button5;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.ComboBox comboBox1;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Button button1;
		//private System.Windows.Forms.Button button1;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;
		public lpgl()
		{
			//
			// 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 );
		}
		#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(lpgl));
			this.dataGrid1 = new System.Windows.Forms.DataGrid();
			this.button3 = new System.Windows.Forms.Button();
			this.button4 = new System.Windows.Forms.Button();
			this.button5 = new System.Windows.Forms.Button();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.label2 = new System.Windows.Forms.Label();
			this.comboBox1 = new System.Windows.Forms.ComboBox();
			this.label1 = new System.Windows.Forms.Label();
			this.button1 = new System.Windows.Forms.Button();
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
			this.SuspendLayout();
			// 
			// dataGrid1
			// 
			this.dataGrid1.DataMember = "";
			this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
			this.dataGrid1.Location = new System.Drawing.Point(32, 64);
			this.dataGrid1.Name = "dataGrid1";
			this.dataGrid1.Size = new System.Drawing.Size(648, 272);
			this.dataGrid1.TabIndex = 4;
			// 
			// button3
			// 
			this.button3.BackColor = System.Drawing.Color.Transparent;
			this.button3.Location = new System.Drawing.Point(192, 344);
			this.button3.Name = "button3";
			this.button3.Size = new System.Drawing.Size(88, 28);
			this.button3.TabIndex = 5;
			this.button3.Text = "添加";
			this.button3.Click += new System.EventHandler(this.button3_Click);
			// 
			// button4
			// 
			this.button4.BackColor = System.Drawing.Color.Transparent;
			this.button4.Location = new System.Drawing.Point(320, 344);
			this.button4.Name = "button4";
			this.button4.Size = new System.Drawing.Size(88, 28);
			this.button4.TabIndex = 6;
			this.button4.Text = "修改";
			this.button4.Click += new System.EventHandler(this.button4_Click);
			// 
			// button5
			// 
			this.button5.BackColor = System.Drawing.Color.Transparent;
			this.button5.Location = new System.Drawing.Point(440, 344);
			this.button5.Name = "button5";
			this.button5.Size = new System.Drawing.Size(88, 28);
			this.button5.TabIndex = 7;
			this.button5.Text = "删除";
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(416, 24);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(104, 21);
			this.textBox1.TabIndex = 12;
			this.textBox1.Text = "";
			// 
			// label2
			// 
			this.label2.BackColor = System.Drawing.Color.Transparent;
			this.label2.Location = new System.Drawing.Point(344, 31);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(80, 16);
			this.label2.TabIndex = 11;
			this.label2.Text = "设置查询值：";
			// 
			// comboBox1
			// 
			this.comboBox1.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList;
			this.comboBox1.Items.AddRange(new object[] {
														   "Mph",
														   "Hz"});
			this.comboBox1.Location = new System.Drawing.Point(232, 24);
			this.comboBox1.Name = "comboBox1";
			this.comboBox1.Size = new System.Drawing.Size(104, 20);
			this.comboBox1.TabIndex = 10;
			// 
			// label1
			// 
			this.label1.BackColor = System.Drawing.Color.Transparent;
			this.label1.Location = new System.Drawing.Point(138, 30);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(96, 16);
			this.label1.TabIndex = 9;
			this.label1.Text = "选择查询条件：";
			// 
			// button1
			// 
			this.button1.BackColor = System.Drawing.Color.Transparent;
			this.button1.Location = new System.Drawing.Point(552, 24);
			this.button1.Name = "button1";
			this.button1.TabIndex = 13;
			this.button1.Text = "开始查询";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// lpgl
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.BackColor = System.Drawing.SystemColors.Control;
			this.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("$this.BackgroundImage")));
			this.ClientSize = new System.Drawing.Size(768, 376);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.textBox1);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.comboBox1);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.button5);
			this.Controls.Add(this.button4);
			this.Controls.Add(this.button3);
			this.Controls.Add(this.dataGrid1);
			this.Name = "lpgl";
			this.Text = "楼盘管理";
			this.Load += new System.EventHandler(this.lpgl_Load);
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
			this.ResumeLayout(false);
		}
		#endregion
		private void lpgl_Load(object sender, System.EventArgs e)
		{
			string connstr,selectcmd;
			connstr="Provider=Microsoft.jet.oledb.4.0;data source="+Application.StartupPath+"\xqwy.mdb";
			selectcmd="select * from lpb";
			OleDbConnection conn=new OleDbConnection(connstr);
			conn.Open();
			OleDbDataAdapter da=new OleDbDataAdapter(selectcmd,conn);
			DataSet ds=new DataSet();
			da.Fill(ds);
			DataTable mytable=new DataTable();
			mytable=ds.Tables[0];
			this.dataGrid1.DataSource=mytable;
		}
	
		private void button1_Click(object sender, System.EventArgs e)
		{
			//查询记录
			try
			{
				string connstr,StrSQL;
				connstr="Provider=Microsoft.jet.oledb.4.0;data source="+Application.StartupPath+"\xqwy.mdb";
				if(this.comboBox1.Text=="所有记录")
					StrSQL="SELECT * FROM lpb";
				StrSQL="SELECT * FROM lpb WHERE ";
				StrSQL+=this.comboBox1.Text+" LIKE  '";
				StrSQL+=this.textBox1.Text+"'";
				OleDbConnection conn=new OleDbConnection(connstr);
				conn.Open();
				OleDbDataAdapter da=new OleDbDataAdapter(StrSQL,conn);
				DataSet ds=new DataSet();
				da.Fill(ds);
				DataTable mytable=new DataTable();
				mytable=ds.Tables[0];
				this.dataGrid1.DataSource=mytable;
				OleDbCommandBuilder cmdbld=new OleDbCommandBuilder(da);
				da.Update(mytable);
			}
			catch(Exception Err)
			{
				MessageBox.Show("查询数据集记录操作失败："+Err.Message,"信息提示",
					MessageBoxButtons.OK,MessageBoxIcon.Information);
			
			}				
		
		}
		private void button3_Click(object sender, System.EventArgs e)
		{
			modilp mymodilp=new modilp();
			mymodilp.Show();
		}
		private void button4_Click(object sender, System.EventArgs e)
		{
			modilp mymodilp=new modilp();
			mymodilp.Show();
		
		}
		
			
	}
}

						