form1.cs

网络应用

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

namespace jiaowu
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private CrystalDecisions.Windows.Forms.CrystalReportViewer crystalReportViewer1;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;
		private System.Windows.Forms.ComboBox comboBox1;
		private string  connectstr = "data source=localhost;Initial Catalog=jiaowu;User ID=sa;Password=sa;";
		private System.Windows.Forms.GroupBox groupBox2;
		private System.Windows.Forms.TextBox textBox9;
		private System.Windows.Forms.TextBox textBox8;
		private System.Windows.Forms.TextBox textBox6;
		private System.Windows.Forms.TextBox textBox5;
		private System.Windows.Forms.Label label10;
		private System.Windows.Forms.Label label9;
		private System.Windows.Forms.Label label7;
		private System.Windows.Forms.Label label6;
		private System.Windows.Forms.Button StuInfo;
        private string select;
		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
			//
			//定义Dataset1类的对象实例myset
			Dataset1 myset = new Dataset1();		
			SqlConnection sqlcnn = new SqlConnection( connectstr );
            
			string sqlstr = "select * from Stud";
			SqlDataAdapter myadapter = new SqlDataAdapter(sqlstr,sqlcnn);
			//将从数据库的Stud表中选出的所有数据放置在myset的名为Stud表中
			myadapter.Fill(myset,"Stud");

			sqlstr = "select * from Yuanxi";
			SqlDataAdapter myadapter1 = new SqlDataAdapter(sqlstr,sqlcnn);
			//将从数据库的Yuanxi表中选出的所有数据放置在myset的名为Yuanxi表中
			myadapter1.Fill(myset,"Yuanxi");
		
			//设置程序运行时默认显示的报表
			bao1 bb = new bao1();
			//设置将水晶报表的数据源
			bb.SetDataSource(myset);
			//设置报表查看器中显示的报表
			crystalReportViewer1.ReportSource = bb;
		}

		/// <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.crystalReportViewer1 = new CrystalDecisions.Windows.Forms.CrystalReportViewer();
			this.comboBox1 = new System.Windows.Forms.ComboBox();
			this.groupBox2 = new System.Windows.Forms.GroupBox();
			this.textBox9 = new System.Windows.Forms.TextBox();
			this.textBox8 = new System.Windows.Forms.TextBox();
			this.textBox6 = new System.Windows.Forms.TextBox();
			this.textBox5 = new System.Windows.Forms.TextBox();
			this.label10 = new System.Windows.Forms.Label();
			this.label9 = new System.Windows.Forms.Label();
			this.label7 = new System.Windows.Forms.Label();
			this.label6 = new System.Windows.Forms.Label();
			this.StuInfo = new System.Windows.Forms.Button();
			this.groupBox2.SuspendLayout();
			this.SuspendLayout();
			// 
			// crystalReportViewer1
			// 
			this.crystalReportViewer1.ActiveViewIndex = -1;
			this.crystalReportViewer1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
				| System.Windows.Forms.AnchorStyles.Left) 
				| System.Windows.Forms.AnchorStyles.Right)));
			this.crystalReportViewer1.Location = new System.Drawing.Point(8, 16);
			this.crystalReportViewer1.Name = "crystalReportViewer1";
			this.crystalReportViewer1.ReportSource = null;
			this.crystalReportViewer1.Size = new System.Drawing.Size(384, 360);
			this.crystalReportViewer1.TabIndex = 0;
			this.crystalReportViewer1.Load += new System.EventHandler(this.crystalReportViewer1_Load);
			// 
			// comboBox1
			// 
			this.comboBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
			this.comboBox1.Items.AddRange(new object[] {
														   "学生信息表",
														   "学生人数对比情况"});
			this.comboBox1.Location = new System.Drawing.Point(416, 56);
			this.comboBox1.Name = "comboBox1";
			this.comboBox1.Size = new System.Drawing.Size(176, 20);
			this.comboBox1.TabIndex = 5;
			this.comboBox1.Text = "请选择";
			this.comboBox1.SelectedIndexChanged += new System.EventHandler(this.comboBox1_SelectedIndexChanged);
			// 
			// groupBox2
			// 
			this.groupBox2.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
			this.groupBox2.BackColor = System.Drawing.Color.Transparent;
			this.groupBox2.Controls.Add(this.textBox9);
			this.groupBox2.Controls.Add(this.textBox8);
			this.groupBox2.Controls.Add(this.textBox6);
			this.groupBox2.Controls.Add(this.textBox5);
			this.groupBox2.Controls.Add(this.label10);
			this.groupBox2.Controls.Add(this.label9);
			this.groupBox2.Controls.Add(this.label7);
			this.groupBox2.Controls.Add(this.label6);
			this.groupBox2.Controls.Add(this.StuInfo);
			this.groupBox2.ForeColor = System.Drawing.Color.Black;
			this.groupBox2.Location = new System.Drawing.Point(408, 96);
			this.groupBox2.Name = "groupBox2";
			this.groupBox2.Size = new System.Drawing.Size(192, 248);
			this.groupBox2.TabIndex = 6;
			this.groupBox2.TabStop = false;
			this.groupBox2.Text = "录入信息";
			// 
			// textBox9
			// 
			this.textBox9.Location = new System.Drawing.Point(72, 160);
			this.textBox9.Name = "textBox9";
			this.textBox9.TabIndex = 15;
			this.textBox9.Text = "";
			// 
			// textBox8
			// 
			this.textBox8.Location = new System.Drawing.Point(72, 120);
			this.textBox8.Name = "textBox8";
			this.textBox8.TabIndex = 14;
			this.textBox8.Text = "";
			// 
			// textBox6
			// 
			this.textBox6.Location = new System.Drawing.Point(72, 80);
			this.textBox6.Name = "textBox6";
			this.textBox6.TabIndex = 12;
			this.textBox6.Text = "";
			// 
			// textBox5
			// 
			this.textBox5.Location = new System.Drawing.Point(72, 40);
			this.textBox5.Name = "textBox5";
			this.textBox5.TabIndex = 11;
			this.textBox5.Text = "";
			// 
			// label10
			// 
			this.label10.ForeColor = System.Drawing.Color.Black;
			this.label10.Location = new System.Drawing.Point(8, 160);
			this.label10.Name = "label10";
			this.label10.Size = new System.Drawing.Size(56, 23);
			this.label10.TabIndex = 10;
			this.label10.Text = "院系编号";
			this.label10.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
			// 
			// label9
			// 
			this.label9.ForeColor = System.Drawing.Color.Black;
			this.label9.Location = new System.Drawing.Point(32, 120);
			this.label9.Name = "label9";
			this.label9.Size = new System.Drawing.Size(32, 23);
			this.label9.TabIndex = 9;
			this.label9.Text = "年龄";
			this.label9.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
			// 
			// label7
			// 
			this.label7.ForeColor = System.Drawing.Color.Black;
			this.label7.Location = new System.Drawing.Point(8, 80);
			this.label7.Name = "label7";
			this.label7.Size = new System.Drawing.Size(56, 23);
			this.label7.TabIndex = 7;
			this.label7.Text = "姓名";
			this.label7.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
			// 
			// label6
			// 
			this.label6.ForeColor = System.Drawing.Color.Black;
			this.label6.Location = new System.Drawing.Point(24, 40);
			this.label6.Name = "label6";
			this.label6.Size = new System.Drawing.Size(40, 23);
			this.label6.TabIndex = 6;
			this.label6.Text = "学号";
			this.label6.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
			// 
			// StuInfo
			// 
			this.StuInfo.Location = new System.Drawing.Point(72, 208);
			this.StuInfo.Name = "StuInfo";
			this.StuInfo.Size = new System.Drawing.Size(88, 23);
			this.StuInfo.TabIndex = 5;
			this.StuInfo.Text = "提交";
			this.StuInfo.Click += new System.EventHandler(this.StuInfo_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(608, 389);
			this.Controls.Add(this.groupBox2);
			this.Controls.Add(this.comboBox1);
			this.Controls.Add(this.crystalReportViewer1);
			this.Name = "Form1";
			this.Text = "教务管理系统";
			this.groupBox2.ResumeLayout(false);
			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 comboBox1_SelectedIndexChanged(object sender, System.EventArgs e)
		{
			//获取从comboBox1中选取的字符串
			select = comboBox1.SelectedText.ToString();

			//定义Dataset1类的对象实例myset
			Dataset1 myset = new Dataset1();		
			SqlConnection sqlcnn = new SqlConnection( connectstr );

			string sqlstr = "select * from Stud";
			SqlDataAdapter myadapter = new SqlDataAdapter(sqlstr,sqlcnn);
			//将从数据库的students表中选出的所有数据放置在myset的名为students表中
			myadapter.Fill(myset,"Stud");

			sqlstr = "select * from Yuanxi";
			SqlDataAdapter myadapter1 = new SqlDataAdapter(sqlstr,sqlcnn);
			//将从数据库的Department表中选出的所有数据放置在myset的名为Department表中
			myadapter1.Fill(myset,"Yuanxi");

			//根据选择到的不同字符串对报表的数据进行绑定
			switch ( Int32.Parse(comboBox1.SelectedIndex.ToString()))
			{
					//选择了基本信息表	
				case 0 :
				{
					bao1 myrpt = new bao1();
					myrpt.SetDataSource(myset);
					crystalReportViewer1.ReportSource = myrpt;	
					break;
				}
					//选择了年龄人数对照表	
				case 1 :
				{
					bao3 myrpt = new bao3();
					myrpt.SetDataSource(myset);
					crystalReportViewer1.ReportSource = myrpt;			
					break;
				}
					
				
			}
		}

		private void StuInfo_Click(object sender, System.EventArgs e)
		{
			string s_Number;
			string s_Name;
			int s_Age;
			int Y_Number;

			//判断必须输入的信息已输入之后在给变量赋值
			if( (textBox5.Text!="") && (textBox6.Text!="") && (textBox8.Text!="") &&(textBox9.Text!=""))
			{
				s_Number = textBox5.Text;
				s_Name = textBox6.Text;
				s_Age = Int32.Parse(textBox8.Text);
				Y_Number = Int32.Parse(textBox9.Text);
			}
			else
			{
				MessageBox.Show("请输入完整的信息！");
				return;
			}
			
			string check = String.Format("select Y_Number from Yuanxi where Y_Number={0}", Y_Number);
			string sql = String.Format("insert into Stud (s_Number,s_Name,s_Age,Y_Number) values ('{0}','{1}',{2},{3})",s_Number,s_Name,s_Age,Y_Number);

			SqlConnection sqlcnn = new SqlConnection( connectstr );
			try
			{
				sqlcnn.Open();
				SqlCommand cmd = new SqlCommand(check, sqlcnn);
				//查询Dep_Number表中是否存在当前要录入的学生所在的院系
				SqlDataReader MyDataReader = cmd.ExecuteReader();				
				if ( !MyDataReader.Read() )
				{
					MessageBox.Show("目前还没有此院系！");
					MyDataReader.Close();
					sqlcnn.Close();
					return;
				}
				MyDataReader.Close();

				SqlCommand cmd1 = new SqlCommand(sql, sqlcnn);
				//执行插入操作，并返回受影响的行数
				int j = cmd1.ExecuteNonQuery();
				//如果受影响的行数小于一则说明操作失败了
				if ( j<1 )
				{
					MessageBox.Show("操作失败！");
					sqlcnn.Close();
				}
				sqlcnn.Close();
			}
			catch(Exception er)
			{
				string temp = er.Message.ToString();
				sqlcnn.Close();
				return;
			}
			MessageBox.Show("已经成功录入！");
		}

		private void crystalReportViewer1_Load(object sender, System.EventArgs e)
		{
		
		}

		
	}
}