deleteinfo.cs

排课系统

using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
using System.Data.SqlClient;
namespace PK
{
	/// <summary>
	/// deleteInfo 的摘要说明。
	/// </summary>
	public class deleteInfo : System.Windows.Forms.UserControl
	{
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.Button button2;
		private System.Windows.Forms.Label label4;
		private System.Windows.Forms.TextBox textBox3;
		private System.Windows.Forms.Button button3;
		private System.Windows.Forms.Label label5;
		private System.Windows.Forms.Label label6;
		private System.Windows.Forms.Label label7;
		/// <summary> 
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public deleteInfo()
		{
			// 该调用是 Windows.Forms 窗体设计器所必需的。
			InitializeComponent();

			// TODO: 在 InitializeComponent 调用后添加任何初始化

		}

		/// <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 组件设计器生成的代码
		/// <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.textBox1 = new System.Windows.Forms.TextBox();
			this.label2 = new System.Windows.Forms.Label();
			this.button1 = new System.Windows.Forms.Button();
			this.label3 = new System.Windows.Forms.Label();
			this.textBox2 = new System.Windows.Forms.TextBox();
			this.button2 = new System.Windows.Forms.Button();
			this.label4 = new System.Windows.Forms.Label();
			this.textBox3 = new System.Windows.Forms.TextBox();
			this.button3 = new System.Windows.Forms.Button();
			this.label5 = new System.Windows.Forms.Label();
			this.label6 = new System.Windows.Forms.Label();
			this.label7 = new System.Windows.Forms.Label();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(24, 80);
			this.label1.Name = "label1";
			this.label1.TabIndex = 0;
			this.label1.Text = "输入教师号";
			this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(168, 80);
			this.textBox1.Name = "textBox1";
			this.textBox1.TabIndex = 1;
			this.textBox1.Text = "textBox1";
			this.textBox1.TextChanged += new System.EventHandler(this.textBox1_TextChanged);
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(112, 16);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(176, 24);
			this.label2.TabIndex = 2;
			this.label2.Text = "删除课程、教师、教室信息";
			this.label2.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(304, 136);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(88, 23);
			this.button1.TabIndex = 3;
			this.button1.Text = "删除教师信息";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(24, 176);
			this.label3.Name = "label3";
			this.label3.TabIndex = 4;
			this.label3.Text = "输入课程号";
			this.label3.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			// 
			// textBox2
			// 
			this.textBox2.Location = new System.Drawing.Point(168, 176);
			this.textBox2.Name = "textBox2";
			this.textBox2.TabIndex = 5;
			this.textBox2.Text = "textBox2";
			this.textBox2.TextChanged += new System.EventHandler(this.textBox2_TextChanged);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(304, 232);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(88, 23);
			this.button2.TabIndex = 6;
			this.button2.Text = "删除课程信息";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// label4
			// 
			this.label4.Location = new System.Drawing.Point(24, 280);
			this.label4.Name = "label4";
			this.label4.TabIndex = 7;
			this.label4.Text = "输入教室号";
			this.label4.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			// 
			// textBox3
			// 
			this.textBox3.Location = new System.Drawing.Point(168, 280);
			this.textBox3.Name = "textBox3";
			this.textBox3.TabIndex = 8;
			this.textBox3.Text = "textBox3";
			// 
			// button3
			// 
			this.button3.Location = new System.Drawing.Point(304, 328);
			this.button3.Name = "button3";
			this.button3.Size = new System.Drawing.Size(88, 23);
			this.button3.TabIndex = 9;
			this.button3.Text = "删除教室信息";
			// 
			// label5
			// 
			this.label5.Location = new System.Drawing.Point(304, 80);
			this.label5.Name = "label5";
			this.label5.TabIndex = 10;
			this.label5.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
			// 
			// label6
			// 
			this.label6.Location = new System.Drawing.Point(304, 176);
			this.label6.Name = "label6";
			this.label6.TabIndex = 11;
			// 
			// label7
			// 
			this.label7.Location = new System.Drawing.Point(296, 280);
			this.label7.Name = "label7";
			this.label7.TabIndex = 12;
			// 
			// deleteInfo
			// 
			this.Controls.Add(this.label7);
			this.Controls.Add(this.label6);
			this.Controls.Add(this.label5);
			this.Controls.Add(this.button3);
			this.Controls.Add(this.textBox3);
			this.Controls.Add(this.label4);
			this.Controls.Add(this.button2);
			this.Controls.Add(this.textBox2);
			this.Controls.Add(this.label3);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.textBox1);
			this.Controls.Add(this.label1);
			this.Name = "deleteInfo";
			this.Size = new System.Drawing.Size(432, 416);
			this.Load += new System.EventHandler(this.deleteInfo_Load);
			this.ResumeLayout(false);

		}
		#endregion

		private void deleteInfo_Load(object sender, System.EventArgs e)
		{
			this.textBox1.Text = "";
			this.textBox2.Text = "";
			this.textBox3.Text = "";
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			bool check = false;
			Connection c = new Connection();
			AddTeacher ad = new AddTeacher();
			if (this.textBox1.Text.Trim() == "")
			{
				MessageBox.Show("教师号不能为空！");
			}
			else
			{
				SqlConnection conn = new SqlConnection(c.getConnectionString);
				conn.Open();
				string sqlstr = "select * from teacher";
				SqlCommand cmd = new SqlCommand(sqlstr,conn);
				SqlDataReader dr = cmd.ExecuteReader();
				while (dr.Read())
				{
					if (this.textBox1.Text.Trim() == Convert.ToString(dr["teacherNo"]))
					{
						check = true;
						this.label5.Text = Convert.ToString(dr["teacherName"]);
						break;
					}
				}
				dr.Close();
				conn.Close();
				if (check)
				{
					ad.Open();
					check = ad.DeleteTeacherInfo(this.textBox1.Text.Trim());
					if (check)
					{
						MessageBox.Show("删除成功！");
					}
					else
					{
						MessageBox.Show("删除失败！");
					}
					ad.Close();
				}
				else
				{
					MessageBox.Show("此教师不存在！");
				}
			}
		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			bool check = false;
			Connection c = new Connection();
			dealCourse ad = new dealCourse();
			if (this.textBox2.Text.Trim() == "")
			{
				MessageBox.Show("课程号不能为空！");
			}
			else
			{
				SqlConnection conn = new SqlConnection(c.getConnectionString);
				conn.Open();
				string sqlstr = "select * from course";
				SqlCommand cmd = new SqlCommand(sqlstr,conn);
				SqlDataReader dr = cmd.ExecuteReader();
				while (dr.Read())
				{
					if (this.textBox2.Text.Trim() == Convert.ToString(dr["courseNo"]))
					{
						check = true;
						//this.label6.Text = Convert.ToString(dr["courseName"]);
						break;
					}
				}
				dr.Close();
				conn.Close();
				if (check)
				{
					ad.Open();
					check = ad.DeleteCourseInfo(this.textBox2.Text.Trim());
					if (check)
					{
						MessageBox.Show("删除成功！");
					}
					else
					{
						MessageBox.Show("删除失败！");
					}
					ad.Close();
				}
				else
				{
					MessageBox.Show("此课程不存在！");
				}
			}
		}

		private void textBox2_TextChanged(object sender, System.EventArgs e)
		{
			bool check = false;
		    Connection c = new Connection();
			SqlConnection conn = new SqlConnection(c.getConnectionString);
			conn.Open();
			string sqlstr = "select * from course";
			SqlCommand cmd = new SqlCommand(sqlstr,conn);
			SqlDataReader dr = cmd.ExecuteReader();
			while (dr.Read())
			{
				if (this.textBox2.Text.Trim() == Convert.ToString(dr["courseNo"]))
				{
					check = true;
					this.label6.Text = Convert.ToString(dr["courseName"]);
					break;
				}
			}
			dr.Close();
			conn.Close();
			if (!check)
			{
				this.label6.Text = "";
			}
		}

		private void textBox1_TextChanged(object sender, System.EventArgs e)
		{
			Connection c = new Connection();
			bool check = false;
			SqlConnection conn = new SqlConnection(c.getConnectionString);
			conn.Open();
			string sqlstr = "select * from teacher";
			SqlCommand cmd = new SqlCommand(sqlstr,conn);
			SqlDataReader dr = cmd.ExecuteReader();
			while (dr.Read())
			{
				if (this.textBox1.Text.Trim() == Convert.ToString(dr["teacherNo"]))
				{
					check = true;
					this.label5.Text = Convert.ToString(dr["teacherName"]);
					break;
				}
			}
			dr.Close();
			conn.Close();
			if (!check)
			{
				this.label5.Text = "";
			}
		}
	}
}