querymaintenance.cs

本系统为资产管理系统

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Data.SqlClient;
namespace AssetManagement
{
	/// <summary>
	/// querymaintenance 的摘要说明。
	/// </summary>
	public class querymaintenance : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.ComboBox comboBox1;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Button button2;
		public delegate void ClickHandler();
		public event ClickHandler click1;
		private string assetCategory;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public querymaintenance()
		{
			//
			// 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
			//
		}
		public string getAssetCategory
		{
			get
			{
				return assetCategory;
			}
			set
			{
				assetCategory = value;
			}
		}

		/// <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.comboBox1 = new System.Windows.Forms.ComboBox();
			this.button1 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(88, 48);
			this.label1.Name = "label1";
			this.label1.TabIndex = 0;
			this.label1.Text = "请选择资产种类";
			this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			// 
			// comboBox1
			// 
			this.comboBox1.Location = new System.Drawing.Point(216, 48);
			this.comboBox1.Name = "comboBox1";
			this.comboBox1.Size = new System.Drawing.Size(121, 20);
			this.comboBox1.TabIndex = 1;
			this.comboBox1.TextChanged += new System.EventHandler(this.comboBox1_TextChanged);
			this.comboBox1.SelectedIndexChanged += new System.EventHandler(this.comboBox1_SelectedIndexChanged);
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(128, 128);
			this.button1.Name = "button1";
			this.button1.TabIndex = 2;
			this.button1.Text = "确定";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(248, 128);
			this.button2.Name = "button2";
			this.button2.TabIndex = 3;
			this.button2.Text = "取消";
			// 
			// querymaintenance
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(416, 174);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.comboBox1);
			this.Controls.Add(this.label1);
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
			this.MaximizeBox = false;
			this.Name = "querymaintenance";
			this.Text = "querymaintenance";
			this.Load += new System.EventHandler(this.querymaintenance_Load);
			this.ResumeLayout(false);

		}
		#endregion

		private void comboBox1_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			if (this.comboBox1.Text.Trim() != "")
			{
				this.button1.Enabled = true;
			}
		}

		private void querymaintenance_Load(object sender, System.EventArgs e)
		{
			Connection s = new Connection();
			SqlConnection conn = new SqlConnection(s.getConnectionString);
			conn.Open();
			string str = "select * from assetCategory";
			SqlCommand cmd = new SqlCommand(str,conn);
			SqlDataReader dr = cmd.ExecuteReader();
			while (dr.Read())
			{
				this.comboBox1.Items.Add(Convert.ToString(dr["assetCategoryDescription"]));
			}
			dr.Close();
			conn.Close();
			this.button1.Enabled = false;
		}

		private void comboBox1_TextChanged(object sender, System.EventArgs e)
		{
			this.comboBox1.Text = "";
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			this.getAssetCategory = this.comboBox1.Text.Trim();
			if (click1 != null)
			{
				click1();
			}
		}
	}
}