addcourse.cs

c#+SQL Server 中小型信息系统开发实例精选书上代码

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

namespace StudentManagementsystem
{
	/// <summary>
	/// AddCourse 的摘要说明。
	/// </summary>
	public class AddCourse : System.Windows.Forms.Form
	{
		private System.Windows.Forms.DataGrid CourList;
		private System.Windows.Forms.Button AddCour;
		private System.Windows.Forms.Button ChgCour;
		private System.Windows.Forms.Button DelCour;
		private System.Windows.Forms.Button ExitCour;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;
		private string AddCourConnStr="workstation id=localhost;Integrated Security=SSPI;database=StuMagSys";
		private SqlConnection AddCourConn;
		private string AddCourSql;
		private SqlCommandBuilder AddCourComm;
		private SqlDataAdapter AddCourDA;
		private System.Windows.Forms.GroupBox groupBox1;
		private System.Windows.Forms.GroupBox groupBox2;
		private DataSet AddCourseset=new DataSet();


		public AddCourse()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();
			this.AddCourse_Load();
			//
			// 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.CourList = new System.Windows.Forms.DataGrid();
			this.AddCour = new System.Windows.Forms.Button();
			this.ChgCour = new System.Windows.Forms.Button();
			this.DelCour = new System.Windows.Forms.Button();
			this.ExitCour = new System.Windows.Forms.Button();
			this.groupBox1 = new System.Windows.Forms.GroupBox();
			this.groupBox2 = new System.Windows.Forms.GroupBox();
			((System.ComponentModel.ISupportInitialize)(this.CourList)).BeginInit();
			this.SuspendLayout();
			// 
			// CourList
			// 
			this.CourList.DataMember = "";
			this.CourList.HeaderForeColor = System.Drawing.SystemColors.ControlText;
			this.CourList.Location = new System.Drawing.Point(32, 24);
			this.CourList.Name = "CourList";
			this.CourList.Size = new System.Drawing.Size(368, 200);
			this.CourList.TabIndex = 0;
			// 
			// AddCour
			// 
			this.AddCour.Location = new System.Drawing.Point(56, 256);
			this.AddCour.Name = "AddCour";
			this.AddCour.Size = new System.Drawing.Size(72, 24);
			this.AddCour.TabIndex = 1;
			this.AddCour.Text = "增加课程";
			this.AddCour.Click += new System.EventHandler(this.AddCour_Click);
			// 
			// ChgCour
			// 
			this.ChgCour.Location = new System.Drawing.Point(216, 256);
			this.ChgCour.Name = "ChgCour";
			this.ChgCour.Size = new System.Drawing.Size(72, 24);
			this.ChgCour.TabIndex = 2;
			this.ChgCour.Text = "保存修改";
			this.ChgCour.Click += new System.EventHandler(this.ChgCour_Click);
			// 
			// DelCour
			// 
			this.DelCour.Location = new System.Drawing.Point(136, 256);
			this.DelCour.Name = "DelCour";
			this.DelCour.Size = new System.Drawing.Size(72, 24);
			this.DelCour.TabIndex = 3;
			this.DelCour.Text = "删除课程";
			this.DelCour.Click += new System.EventHandler(this.DelCour_Click);
			// 
			// ExitCour
			// 
			this.ExitCour.Location = new System.Drawing.Point(296, 256);
			this.ExitCour.Name = "ExitCour";
			this.ExitCour.Size = new System.Drawing.Size(72, 24);
			this.ExitCour.TabIndex = 4;
			this.ExitCour.Text = "退出";
			this.ExitCour.Click += new System.EventHandler(this.ExitCour_Click);
			// 
			// groupBox1
			// 
			this.groupBox1.Location = new System.Drawing.Point(24, 8);
			this.groupBox1.Name = "groupBox1";
			this.groupBox1.Size = new System.Drawing.Size(384, 232);
			this.groupBox1.TabIndex = 5;
			this.groupBox1.TabStop = false;
			this.groupBox1.Text = "现有课程信息";
			// 
			// groupBox2
			// 
			this.groupBox2.Location = new System.Drawing.Point(24, 240);
			this.groupBox2.Name = "groupBox2";
			this.groupBox2.Size = new System.Drawing.Size(384, 48);
			this.groupBox2.TabIndex = 6;
			this.groupBox2.TabStop = false;
			// 
			// AddCourse
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(432, 309);
			this.Controls.Add(this.ExitCour);
			this.Controls.Add(this.DelCour);
			this.Controls.Add(this.ChgCour);
			this.Controls.Add(this.AddCour);
			this.Controls.Add(this.CourList);
			this.Controls.Add(this.groupBox1);
			this.Controls.Add(this.groupBox2);
			this.Name = "AddCourse";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "课程管理";
			((System.ComponentModel.ISupportInitialize)(this.CourList)).EndInit();
			this.ResumeLayout(false);

		}
		#endregion

		private void AddCourse_Load()
		{  


			
			AddCourSql="select Course_name as 课程名,credit as 学分 from course";
			this.AddCourConn=new SqlConnection(this.AddCourConnStr);
			this.AddCourDA=new SqlDataAdapter(this.AddCourSql,this.AddCourConn);
			AddCourseset.Clear();
			this.AddCourDA.Fill(AddCourseset,"Course");
			CourList.DataSource=AddCourseset.Tables[0];
		}

		private void ChgCour_Click(object sender, System.EventArgs e)
		{
			try
			{
				int row=this.CourList.CurrentCell.RowNumber;
				this.CourList.CurrentCell=new DataGridCell(row+1,0);
				if(AddCourseset.HasChanges())
				{
					this.AddCourConn=new SqlConnection(this.AddCourConnStr);
					this.AddCourDA=new SqlDataAdapter(this.AddCourSql,this.AddCourConn);
					AddCourComm=new SqlCommandBuilder(AddCourDA);
					this.AddCourDA.Update(this.AddCourseset.GetChanges(),"Course");
					MessageBox.Show("保存修改成功!","信息");
				}
				
			}
			catch(Exception Ee)
			{
				MessageBox.Show(Ee.ToString(),"信息");
			}

		}

		private void ExitCour_Click(object sender, System.EventArgs e)
		{
			if(MessageBox.Show("您确认要退出本系统？","确认",MessageBoxButtons.YesNoCancel)==DialogResult.Yes)
				this.Close();
		}

		private void DelCour_Click(object sender, System.EventArgs e)
		{
			int rowNumber=this.CourList.CurrentCell.RowNumber;
			try
			{
				this.AddCourseset.Tables[0].Rows[rowNumber].Delete();

				this.AddCourConn=new SqlConnection(this.AddCourConnStr);
				AddCourDA=new SqlDataAdapter("",AddCourConn);
				AddCourComm=new SqlCommandBuilder(AddCourDA);
				AddCourDA.Update(this.AddCourseset.GetChanges(),"Course");
				MessageBox.Show("删除成功!","信息");

			}
			catch
			{}
		}

		private void AddCour_Click(object sender, System.EventArgs e)
		{
			int row=this.CourList.VisibleRowCount;
			this.CourList.CurrentCell=new DataGridCell(row+1,0);

		}
	}
}