form1.cs

c#网络编程及应用-刘瑞新

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


namespace EX7_22
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.ComboBox comboBox1;
		/// <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
			//
			FillComboBox(ref this.comboBox1,"pubs","stores");
			if(this.comboBox1.Items.Count>0)
			{
				this.comboBox1.SelectedIndex=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.comboBox1 = new System.Windows.Forms.ComboBox();
			this.SuspendLayout();
			// 
			// comboBox1
			// 
			this.comboBox1.Location = new System.Drawing.Point(40, 24);
			this.comboBox1.Name = "comboBox1";
			this.comboBox1.Size = new System.Drawing.Size(280, 20);
			this.comboBox1.TabIndex = 0;
			this.comboBox1.Text = "comboBox1";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(456, 273);
			this.Controls.Add(this.comboBox1);
			this.Name = "Form1";
			this.Text = "Form1";
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}
		private void FillComboBox(ref ComboBox combobox,string database,string tableName)
		{
			string sqlstr="select * from "+tableName;
			string  connString="server=localhost; Integrated Security=SSPI;database="+database;
			SqlConnection conn=new SqlConnection(connString);
			conn.Open();
			SqlCommand command=new SqlCommand(sqlstr,conn);
			SqlDataReader r=command.ExecuteReader();
			while(r.Read())
			{
				// r[0]、r[1]为第1列和第2列，也可以用对应列的字段名，如r[“stor_id”]
				combobox.Items.Add("["+r[0]+"]"+r[1]);
			}
			conn.Close();
		}

	}
}