form1.cs

C#150例

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

namespace Example139_更新相关表
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Data.OleDb.OleDbDataAdapter oleDbDataAdapter1;
		private System.Data.OleDb.OleDbCommand oleDbSelectCommand1;
		private System.Data.OleDb.OleDbCommand oleDbInsertCommand1;
		private System.Data.OleDb.OleDbCommand oleDbUpdateCommand1;
		private System.Data.OleDb.OleDbCommand oleDbDeleteCommand1;
		private System.Data.OleDb.OleDbConnection oleDbConnection1;
		private System.Data.OleDb.OleDbDataAdapter oleDbDataAdapter2;
		private System.Data.OleDb.OleDbCommand oleDbSelectCommand2;
		private System.Data.OleDb.OleDbCommand oleDbInsertCommand2;
		private System.Data.OleDb.OleDbCommand oleDbUpdateCommand2;
		private System.Data.OleDb.OleDbCommand oleDbDeleteCommand2;
		private Example139_更新相关表.dsPublishersTitles dsPublishersTitles1;
		private System.Windows.Forms.DataGrid dataGrid1;
		private System.Windows.Forms.DataGrid dataGrid2;
		private System.Windows.Forms.Button btnUp;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			//
			// 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 Form Designer generated code
		/// <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.oleDbDataAdapter1 = new System.Data.OleDb.OleDbDataAdapter();
			this.oleDbDeleteCommand1 = new System.Data.OleDb.OleDbCommand();
			this.oleDbConnection1 = new System.Data.OleDb.OleDbConnection();
			this.oleDbInsertCommand1 = new System.Data.OleDb.OleDbCommand();
			this.oleDbSelectCommand1 = new System.Data.OleDb.OleDbCommand();
			this.oleDbUpdateCommand1 = new System.Data.OleDb.OleDbCommand();
			this.oleDbDataAdapter2 = new System.Data.OleDb.OleDbDataAdapter();
			this.oleDbDeleteCommand2 = new System.Data.OleDb.OleDbCommand();
			this.oleDbInsertCommand2 = new System.Data.OleDb.OleDbCommand();
			this.oleDbSelectCommand2 = new System.Data.OleDb.OleDbCommand();
			this.oleDbUpdateCommand2 = new System.Data.OleDb.OleDbCommand();
			this.dsPublishersTitles1 = new Example139_更新相关表.dsPublishersTitles();
			this.dataGrid1 = new System.Windows.Forms.DataGrid();
			this.dataGrid2 = new System.Windows.Forms.DataGrid();
			this.btnUp = new System.Windows.Forms.Button();
			((System.ComponentModel.ISupportInitialize)(this.dsPublishersTitles1)).BeginInit();
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
			((System.ComponentModel.ISupportInitialize)(this.dataGrid2)).BeginInit();
			this.SuspendLayout();
			// 
			// oleDbDataAdapter1
			// 
			this.oleDbDataAdapter1.DeleteCommand = this.oleDbDeleteCommand1;
			this.oleDbDataAdapter1.InsertCommand = this.oleDbInsertCommand1;
			this.oleDbDataAdapter1.SelectCommand = this.oleDbSelectCommand1;
			this.oleDbDataAdapter1.TableMappings.AddRange(new System.Data.Common.DataTableMapping[] {
																										new System.Data.Common.DataTableMapping("Table", "publishers", new System.Data.Common.DataColumnMapping[] {
																																																					  new System.Data.Common.DataColumnMapping("pub_id", "pub_id"),
																																																					  new System.Data.Common.DataColumnMapping("pub_name", "pub_name")})});
			this.oleDbDataAdapter1.UpdateCommand = this.oleDbUpdateCommand1;
			// 
			// oleDbDeleteCommand1
			// 
			this.oleDbDeleteCommand1.CommandText = "DELETE FROM publishers WHERE (pub_id = ?) AND (pub_name = ? OR ? IS NULL AND pub_" +
				"name IS NULL)";
			this.oleDbDeleteCommand1.Connection = this.oleDbConnection1;
			this.oleDbDeleteCommand1.Parameters.Add(new System.Data.OleDb.OleDbParameter("Original_pub_id", System.Data.OleDb.OleDbType.VarChar, 4, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "pub_id", System.Data.DataRowVersion.Original, null));
			this.oleDbDeleteCommand1.Parameters.Add(new System.Data.OleDb.OleDbParameter("Original_pub_name", System.Data.OleDb.OleDbType.VarChar, 40, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "pub_name", System.Data.DataRowVersion.Original, null));
			this.oleDbDeleteCommand1.Parameters.Add(new System.Data.OleDb.OleDbParameter("Original_pub_name1", System.Data.OleDb.OleDbType.VarChar, 40, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "pub_name", System.Data.DataRowVersion.Original, null));
			// 
			// oleDbConnection1
			// 
			this.oleDbConnection1.ConnectionString = @"Provider=SQLOLEDB.1;Integrated Security=SSPI;Persist Security Info=False;Initial Catalog=pubs;Data Source=yinlimin;Use Procedure for Prepare=1;Auto Translate=True;Packet Size=4096;Workstation ID=YINLIMIN;Use Encryption for Data=False;Tag with column collation when possible=False";
			// 
			// oleDbInsertCommand1
			// 
			this.oleDbInsertCommand1.CommandText = "INSERT INTO publishers(pub_id, pub_name) VALUES (?, ?); SELECT pub_id, pub_name F" +
				"ROM publishers WHERE (pub_id = ?)";
			this.oleDbInsertCommand1.Connection = this.oleDbConnection1;
			this.oleDbInsertCommand1.Parameters.Add(new System.Data.OleDb.OleDbParameter("pub_id", System.Data.OleDb.OleDbType.VarChar, 4, "pub_id"));
			this.oleDbInsertCommand1.Parameters.Add(new System.Data.OleDb.OleDbParameter("pub_name", System.Data.OleDb.OleDbType.VarChar, 40, "pub_name"));
			this.oleDbInsertCommand1.Parameters.Add(new System.Data.OleDb.OleDbParameter("Select_pub_id", System.Data.OleDb.OleDbType.VarChar, 4, "pub_id"));
			// 
			// oleDbSelectCommand1
			// 
			this.oleDbSelectCommand1.CommandText = "SELECT pub_id, pub_name FROM publishers";
			this.oleDbSelectCommand1.Connection = this.oleDbConnection1;
			// 
			// oleDbUpdateCommand1
			// 
			this.oleDbUpdateCommand1.CommandText = "UPDATE publishers SET pub_id = ?, pub_name = ? WHERE (pub_id = ?) AND (pub_name =" +
				" ? OR ? IS NULL AND pub_name IS NULL); SELECT pub_id, pub_name FROM publishers W" +
				"HERE (pub_id = ?)";
			this.oleDbUpdateCommand1.Connection = this.oleDbConnection1;
			this.oleDbUpdateCommand1.Parameters.Add(new System.Data.OleDb.OleDbParameter("pub_id", System.Data.OleDb.OleDbType.VarChar, 4, "pub_id"));
			this.oleDbUpdateCommand1.Parameters.Add(new System.Data.OleDb.OleDbParameter("pub_name", System.Data.OleDb.OleDbType.VarChar, 40, "pub_name"));
			this.oleDbUpdateCommand1.Parameters.Add(new System.Data.OleDb.OleDbParameter("Original_pub_id", System.Data.OleDb.OleDbType.VarChar, 4, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "pub_id", System.Data.DataRowVersion.Original, null));
			this.oleDbUpdateCommand1.Parameters.Add(new System.Data.OleDb.OleDbParameter("Original_pub_name", System.Data.OleDb.OleDbType.VarChar, 40, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "pub_name", System.Data.DataRowVersion.Original, null));
			this.oleDbUpdateCommand1.Parameters.Add(new System.Data.OleDb.OleDbParameter("Original_pub_name1", System.Data.OleDb.OleDbType.VarChar, 40, System.Data.ParameterDirection.Input, false, ((System.Byte)(0)), ((System.Byte)(0)), "pub_name", System.Data.DataRowVersion.Original, null));
			this.oleDbUpdateCommand1.Parameters.Add(new System.Data.OleDb.OleDbParameter("Select_pub_id", System.Data.OleDb.OleDbType.VarChar, 4, "pub_id"));
			// 
			// oleDbDataAdapter2
			// 
			this.oleDbDataAdapter2.DeleteCommand = this.oleDbDeleteCommand2;
			this.oleDbDataAdapter2.InsertCommand = this.oleDbInsertCommand2;
			this.oleDbDataAdapter2.SelectCommand = this.oleDbSelectCommand2;
			this.oleDbDataAdapter2.TableMappings.AddRange(new System.Data.Common.DataTableMapping[] {
																										new System.Data.Common.DataTableMapping("Table", "titles", new System.Data.Common.DataColumnMapping[] {
																																																				  new System.Data.Common.DataColumnMapping("title_id", "title_id"),
																																																				  new System.Data.Common.DataColumnMapping("title", "title"),
																																																				  new System.Data.Common.DataColumnMapping("pub_id", "pub_id"),
																																																				  new System.Data.Common.DataColumnMapping("price", "price")})});