bminfo.cs

此为本人和同学所开发的酒店管理系统.C#.net.也是软件工程课程的作业.

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

namespace RoomManage
{
	/// <summary>
	/// bminfo 的摘要说明。
	/// </summary>
	public class bminfo : System.Windows.Forms.Form
	{
		private System.Windows.Forms.GroupBox groupBox1;
		private System.Windows.Forms.DataGrid dataGrid1;
		private System.Windows.Forms.GroupBox groupBox2;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Button button2;
		private System.Windows.Forms.Button button3;
		private System.Windows.Forms.Button button4;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		DataConn dc=new DataConn ();
		protected SqlDataAdapter adapter;
		protected DataSet dataset;
		protected DataTable table;
		protected string selectString;

		public bminfo()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();
			BindData();
			//
			// 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()
		{
			this.groupBox1 = new System.Windows.Forms.GroupBox();
			this.dataGrid1 = new System.Windows.Forms.DataGrid();
			this.groupBox2 = new System.Windows.Forms.GroupBox();
			this.button1 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.button3 = new System.Windows.Forms.Button();
			this.button4 = new System.Windows.Forms.Button();
			this.groupBox1.SuspendLayout();
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
			this.groupBox2.SuspendLayout();
			this.SuspendLayout();
			// 
			// groupBox1
			// 
			this.groupBox1.Controls.Add(this.dataGrid1);
			this.groupBox1.Location = new System.Drawing.Point(0, 0);
			this.groupBox1.Name = "groupBox1";
			this.groupBox1.Size = new System.Drawing.Size(352, 216);
			this.groupBox1.TabIndex = 4;
			this.groupBox1.TabStop = false;
			this.groupBox1.Text = "部门信息";
			// 
			// dataGrid1
			// 
			this.dataGrid1.DataMember = "";
			this.dataGrid1.Dock = System.Windows.Forms.DockStyle.Fill;
			this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
			this.dataGrid1.Location = new System.Drawing.Point(3, 17);
			this.dataGrid1.Name = "dataGrid1";
			this.dataGrid1.Size = new System.Drawing.Size(346, 196);
			this.dataGrid1.TabIndex = 0;
			// 
			// groupBox2
			// 
			this.groupBox2.Controls.Add(this.button1);
			this.groupBox2.Controls.Add(this.button2);
			this.groupBox2.Controls.Add(this.button3);
			this.groupBox2.Controls.Add(this.button4);
			this.groupBox2.Location = new System.Drawing.Point(0, 216);
			this.groupBox2.Name = "groupBox2";
			this.groupBox2.Size = new System.Drawing.Size(352, 48);
			this.groupBox2.TabIndex = 5;
			this.groupBox2.TabStop = false;
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(8, 16);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(48, 23);
			this.button1.TabIndex = 2;
			this.button1.Text = "添加";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(64, 16);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(48, 23);
			this.button2.TabIndex = 2;
			this.button2.Text = "删除";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// button3
			// 
			this.button3.Location = new System.Drawing.Point(232, 16);
			this.button3.Name = "button3";
			this.button3.Size = new System.Drawing.Size(48, 23);
			this.button3.TabIndex = 2;
			this.button3.Text = "保存";
			this.button3.Click += new System.EventHandler(this.button3_Click);
			// 
			// button4
			// 
			this.button4.Location = new System.Drawing.Point(288, 16);
			this.button4.Name = "button4";
			this.button4.Size = new System.Drawing.Size(48, 23);
			this.button4.TabIndex = 2;
			this.button4.Text = "退出";
			this.button4.Click += new System.EventHandler(this.button4_Click);
			// 
			// bminfo
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(352, 269);
			this.ControlBox = false;
			this.Controls.Add(this.groupBox1);
			this.Controls.Add(this.groupBox2);
			this.MaximizeBox = false;
			this.MinimizeBox = false;
			this.Name = "bminfo";
			this.ShowInTaskbar = false;
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
			this.Text = "部门信息维护";
			this.TopMost = true;
			this.Closing += new System.ComponentModel.CancelEventHandler(this.bminfo_Closing);
			this.groupBox1.ResumeLayout(false);
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
			this.groupBox2.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion
		private void BindData()
		{
			string connString=dc.connstr ;
			SqlConnection conn=new SqlConnection(connString);
			selectString="select * from tabbmdy order by 部门编号";
			adapter=new SqlDataAdapter(selectString,conn);
			SqlCommandBuilder builder=new SqlCommandBuilder(adapter);
			adapter.DeleteCommand=builder.GetDeleteCommand();
			adapter.InsertCommand=builder.GetInsertCommand();
			adapter.UpdateCommand=builder.GetUpdateCommand();
			dataset=new DataSet();
			adapter.Fill(dataset,"tabbmdy");
			table=dataset.Tables["tabbmdy"];
			
			//创建惟一性约束
			UniqueConstraint constraint = new UniqueConstraint
				(new DataColumn[]{table.Columns[0]});
			table.Constraints.Add(constraint);
			this.dataGrid1.SetDataBinding(dataset,"tabbmdy");
		}

		public virtual void AddNewRow()
		{
			int num=table.Rows.Count+1;
			DataRow newRow=table.NewRow();
			while(true)
			{
				try
				{
					newRow["部门编号"]="BM"+num.ToString ("d5");
					table.Rows.Add(newRow);
					break;
				}
				catch
				{
					num++;
					continue;
				}
			}
		}

		private void button4_Click(object sender, System.EventArgs e)
		{
			if(MessageBox.Show("真的要退出吗？","注意",MessageBoxButtons.OKCancel,MessageBoxIcon.Question)==DialogResult.OK)
				this.Close ();
		}

		private void button3_Click(object sender, System.EventArgs e)
		{
			try
			{
				adapter.Update(dataset,"tabbmdy");
				MessageBox.Show("保存成功。","恭喜");
			}
			catch(Exception err)
			{
				MessageBox.Show(err.Message,"保存信息出错！",MessageBoxButtons.OK,MessageBoxIcon.Exclamation);
			}
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			AddNewRow();
		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			int num=table.Rows.Count-1;
			if(num>0)
			{
				ArrayList ar=new ArrayList();
				for(int i=num;i>=0;i--)
				{
					if(this.dataGrid1.IsSelected(i))
					{
						ar.Add(i);
					}
				}
				if(ar.Count>0)
				{
					//捕获错误信息
					if(MessageBox.Show("确实要删除选中的"+ar.Count.ToString()+"行吗？ 注意：删除后就无法恢复了！","警告",MessageBoxButtons.YesNo,MessageBoxIcon.Question)==DialogResult.Yes)
					{
						foreach(int i in ar)
						{
							table.Rows[i].Delete();
						}
					}
				}
				else
				{
					MessageBox.Show("请先用鼠标点击左边灰色部分选择要删除的行(可以按住Ctrl键或者Shift键同时用鼠标选中多行)，然后再删除。","提示");
				}
			}
		}

		private void bminfo_Closing(object sender, System.ComponentModel.CancelEventArgs e)
		{
			if(dataset.HasChanges())
			{
				if(MessageBox.Show("数据尚未保存，放弃所作的修改吗？","小心",MessageBoxButtons.YesNo,MessageBoxIcon.Question)==DialogResult.Yes)
				{
					this.Close();
					e.Cancel=false;  //退出
				}
				else
				{
					e.Cancel=true;  //放弃退出
				}
			}
		}
		
	}
}