form1.cs

原代码详细说明是关于c++方面的希望可以帮助大家使用

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

namespace Exam6_5
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Button button5;
		private System.Windows.Forms.Button button6;
		private System.Windows.Forms.Button button7;
		private System.Windows.Forms.Button button8;
		private System.Windows.Forms.DataGrid dataGrid1;
		private System.Windows.Forms.GroupBox groupBox1;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.TextBox textBox3;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.GroupBox groupBox2;
		private System.Windows.Forms.Button button4;
		private System.Windows.Forms.Button button3;
		private System.Windows.Forms.Button button2;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.Button button9;
		private System.Windows.Forms.Button button10;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		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
			//
		}

		/// <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.button5 = new System.Windows.Forms.Button();
			this.button6 = new System.Windows.Forms.Button();
			this.button7 = new System.Windows.Forms.Button();
			this.button8 = new System.Windows.Forms.Button();
			this.dataGrid1 = new System.Windows.Forms.DataGrid();
			this.groupBox1 = new System.Windows.Forms.GroupBox();
			this.textBox3 = new System.Windows.Forms.TextBox();
			this.label3 = new System.Windows.Forms.Label();
			this.textBox2 = new System.Windows.Forms.TextBox();
			this.label2 = new System.Windows.Forms.Label();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.label1 = new System.Windows.Forms.Label();
			this.groupBox2 = new System.Windows.Forms.GroupBox();
			this.button4 = new System.Windows.Forms.Button();
			this.button3 = new System.Windows.Forms.Button();
			this.button2 = new System.Windows.Forms.Button();
			this.button1 = new System.Windows.Forms.Button();
			this.button9 = new System.Windows.Forms.Button();
			this.button10 = new System.Windows.Forms.Button();
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
			this.groupBox1.SuspendLayout();
			this.groupBox2.SuspendLayout();
			this.SuspendLayout();
			// 
			// button5
			// 
			this.button5.Location = new System.Drawing.Point(30, 167);
			this.button5.Name = "button5";
			this.button5.Size = new System.Drawing.Size(52, 26);
			this.button5.TabIndex = 21;
			this.button5.Text = "添加";
			this.button5.Click += new System.EventHandler(this.button5_Click);
			// 
			// button6
			// 
			this.button6.Location = new System.Drawing.Point(101, 167);
			this.button6.Name = "button6";
			this.button6.Size = new System.Drawing.Size(52, 26);
			this.button6.TabIndex = 22;
			this.button6.Text = "修改";
			this.button6.Click += new System.EventHandler(this.button6_Click);
			// 
			// button7
			// 
			this.button7.Location = new System.Drawing.Point(172, 167);
			this.button7.Name = "button7";
			this.button7.Size = new System.Drawing.Size(52, 26);
			this.button7.TabIndex = 23;
			this.button7.Text = "保存";
			this.button7.Click += new System.EventHandler(this.button7_Click);
			// 
			// button8
			// 
			this.button8.Location = new System.Drawing.Point(243, 167);
			this.button8.Name = "button8";
			this.button8.Size = new System.Drawing.Size(52, 26);
			this.button8.TabIndex = 24;
			this.button8.Text = "取消";
			this.button8.Click += new System.EventHandler(this.button8_Click);
			// 
			// dataGrid1
			// 
			this.dataGrid1.CaptionVisible = false;
			this.dataGrid1.DataMember = "";
			this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
			this.dataGrid1.Location = new System.Drawing.Point(6, 8);
			this.dataGrid1.Name = "dataGrid1";
			this.dataGrid1.ReadOnly = true;
			this.dataGrid1.Size = new System.Drawing.Size(280, 151);
			this.dataGrid1.TabIndex = 29;
			// 
			// groupBox1
			// 
			this.groupBox1.Controls.Add(this.textBox3);
			this.groupBox1.Controls.Add(this.label3);
			this.groupBox1.Controls.Add(this.textBox2);
			this.groupBox1.Controls.Add(this.label2);
			this.groupBox1.Controls.Add(this.textBox1);
			this.groupBox1.Controls.Add(this.label1);
			this.groupBox1.Location = new System.Drawing.Point(295, 11);
			this.groupBox1.Name = "groupBox1";
			this.groupBox1.Size = new System.Drawing.Size(189, 103);
			this.groupBox1.TabIndex = 30;
			this.groupBox1.TabStop = false;
			this.groupBox1.Text = "成绩记录";
			// 
			// textBox3
			// 
			this.textBox3.Location = new System.Drawing.Point(67, 71);
			this.textBox3.Name = "textBox3";
			this.textBox3.Size = new System.Drawing.Size(59, 21);
			this.textBox3.TabIndex = 5;
			this.textBox3.Text = "";
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(19, 76);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(45, 19);
			this.label3.TabIndex = 4;
			this.label3.Text = "成绩";
			// 
			// textBox2
			// 
			this.textBox2.Location = new System.Drawing.Point(67, 42);
			this.textBox2.Name = "textBox2";
			this.textBox2.Size = new System.Drawing.Size(53, 21);
			this.textBox2.TabIndex = 3;
			this.textBox2.Text = "";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(19, 49);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(46, 16);
			this.label2.TabIndex = 2;
			this.label2.Text = "课程号";
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(67, 14);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(54, 21);
			this.textBox1.TabIndex = 1;
			this.textBox1.Text = "";
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(19, 21);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(55, 21);
			this.label1.TabIndex = 0;
			this.label1.Text = "学号";
			// 
			// groupBox2
			// 
			this.groupBox2.Controls.Add(this.button4);
			this.groupBox2.Controls.Add(this.button3);
			this.groupBox2.Controls.Add(this.button2);
			this.groupBox2.Controls.Add(this.button1);
			this.groupBox2.Location = new System.Drawing.Point(295, 117);
			this.groupBox2.Name = "groupBox2";
			this.groupBox2.Size = new System.Drawing.Size(189, 41);
			this.groupBox2.TabIndex = 31;
			this.groupBox2.TabStop = false;
			// 
			// button4
			// 
			this.button4.Location = new System.Drawing.Point(141, 11);
			this.button4.Name = "button4";
			this.button4.Size = new System.Drawing.Size(40, 24);
			this.button4.TabIndex = 32;
			this.button4.Text = "尾页";
			this.button4.Click += new System.EventHandler(this.button4_Click);
			// 
			// button3
			// 
			this.button3.Location = new System.Drawing.Point(95, 11);
			this.button3.Name = "button3";
			this.button3.Size = new System.Drawing.Size(40, 24);
			this.button3.TabIndex = 31;
			this.button3.Text = "首页";
			this.button3.Click += new System.EventHandler(this.button3_Click);
			// 
			// button2
			// 
			this.button2.Location = new System.Drawing.Point(49, 11);
			this.button2.Name = "button2";
			this.button2.Size = new System.Drawing.Size(40, 24);
			this.button2.TabIndex = 30;
			this.button2.Text = "下页";
			this.button2.Click += new System.EventHandler(this.button2_Click);
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(6, 11);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(40, 24);
			this.button1.TabIndex = 29;
			this.button1.Text = "上页";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// button9
			// 
			this.button9.Location = new System.Drawing.Point(314, 167);
			this.button9.Name = "button9";
			this.button9.Size = new System.Drawing.Size(52, 26);
			this.button9.TabIndex = 32;
			this.button9.Text = "删除";
			this.button9.Click += new System.EventHandler(this.button9_Click);
			// 
			// button10
			// 
			this.button10.Location = new System.Drawing.Point(385, 167);
			this.button10.Name = "button10";
			this.button10.Size = new System.Drawing.Size(52, 26);
			this.button10.TabIndex = 33;
			this.button10.Text = "退出";
			this.button10.Click += new System.EventHandler(this.button10_Click);
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(490, 199);
			this.Controls.Add(this.button10);
			this.Controls.Add(this.button9);
			this.Controls.Add(this.groupBox2);
			this.Controls.Add(this.groupBox1);
			this.Controls.Add(this.dataGrid1);
			this.Controls.Add(this.button8);
			this.Controls.Add(this.button7);
			this.Controls.Add(this.button6);
			this.Controls.Add(this.button5);
			this.Name = "Form1";
			this.Text = "学生成绩维护";
			this.Load += new System.EventHandler(this.Form1_Load);
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
			this.groupBox1.ResumeLayout(false);
			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());
		}
        SqlDataAdapter sqlDataAdapter;
		DataSet dsScore;
		int cur;
		private void Form1_Load(object sender, System.EventArgs e)
		{

			SqlConnection myConnection = new SqlConnection();
			myConnection.ConnectionString = "server=localhost;uid=sa;pwd=;database=xsgl";
			SqlCommand sqlCommand=new SqlCommand();
			sqlCommand.Connection=myConnection;
			sqlCommand.CommandType=CommandType.Text;
			sqlCommand.CommandText ="SELECT *  FROM score";
	
			sqlDataAdapter=new SqlDataAdapter();
			sqlDataAdapter.SelectCommand=sqlCommand;
			SqlCommandBuilder builder=new SqlCommandBuilder(sqlDataAdapter);

			dsScore=new DataSet();
            sqlDataAdapter.Fill(dsScore,"score");
		
            this.BindingContext[dsScore, "score"].PositionChanged +=new EventHandler(BindingManagerBase_PositionChanged);

		  	textBox1.DataBindings.Add(new Binding("Text",dsScore, "score.studID"));//Text为要绑定的控件属性，mydv为数据视图，productID为字段名称。
			textBox2.DataBindings.Add(new Binding("Text",dsScore, "score.courseID"));//Text为要绑定的控件属性，mydv为数据视图，productID为字段名称。
			textBox3.DataBindings.Add(new Binding("Text",dsScore, "score.score"));//Text为要绑定的控件属性，mydv为数据视图，productID为字段名称。
		    
			dataGrid1.DataSource=dsScore;
			dataGrid1.DataMember="score";
			
			ShowPosition();
			setState(true);
		}

		private void button1_Click(object sender, System.EventArgs e)
		{
			this.BindingContext[dsScore, "score"].Position-=1;
		}

		private void button2_Click(object sender, System.EventArgs e)
		{
			this.BindingContext[dsScore, "score"].Position+=1;
		}

		private void button3_Click(object sender, System.EventArgs e)
		{
			this.BindingContext[dsScore, "score"].Position=0;
		}

		private void button4_Click(object sender, System.EventArgs e)
		{
			this.BindingContext[dsScore, "score"].Position=this.BindingContext[dsScore, "score"].Count-1;
		}
		private void ShowPosition()
		{
			int iCnt;
			int iPos;
			iCnt = this.BindingContext[dsScore, "score"].Count;
			iPos = this.BindingContext[dsScore, "score"].Position + 1;
			if(iCnt == 0)
			{
				groupBox1.Text = "无记录";
			}
			else 
			{
				groupBox1.Text = iPos.ToString() + " of " + iCnt.ToString() ;
			}
		}
		private void BindingManagerBase_PositionChanged
			(object sender, EventArgs e)
		{
			// 显示当前位置
			ShowPosition();
		}

		private void button5_Click(object sender, System.EventArgs e)
		{
			cur=this.BindingContext[dsScore, "score"].Position;
			textBox1.Focus();
			textBox1.Text="";
			textBox2.Text="";
			textBox3.Text="";
			setState(false);
		}

		private void button7_Click(object sender, System.EventArgs e)
		{
			try
			{
				DataRow dr=dsScore.Tables["score"].NewRow();
				dr["studID"]=Int32.Parse(textBox1.Text);
				dr["courseID"]=Int32.Parse(textBox2.Text);
				dr["score"]=Single.Parse(textBox3.Text);
				dsScore.Tables["score"].Rows.Add(dr);
				sqlDataAdapter.Update(dsScore,"score");
				this.BindingContext[dsScore, "score"].Position=this.BindingContext[dsScore, "score"].Count-1;
			}
			catch(Exception ee){MessageBox.Show("保存数据失败:"+ee.Message);}
		}

		private void button8_Click(object sender, System.EventArgs e)
		{
			dsScore.Clear();
			sqlDataAdapter.Fill(dsScore,"score");
			setState(true);
			this.BindingContext[dsScore, "score"].Position=cur;
		}

		private void button6_Click(object sender, System.EventArgs e)
		{
			cur=this.BindingContext[dsScore, "score"].Position;
			setState(false);
            textBox1.ReadOnly=true;
			textBox2.Focus();
		}

		private void button9_Click(object sender, System.EventArgs e)
		{
			dsScore.Tables["score"].Rows[this.BindingContext[dsScore, "score"].Position].Delete();
			sqlDataAdapter.Update(dsScore,"score");
		}
		private void setState(bool b)
		{
             button1.Enabled=b;
			 button2.Enabled=b;
			 button3.Enabled=b;
			 button4.Enabled=b;
			 button5.Enabled=b;
			 button6.Enabled=b;
			 button7.Enabled=!b;
			 button8.Enabled=!b;
			 button9.Enabled=b;
			 button10.Enabled=b;
			 dataGrid1.Enabled=b;
			 textBox1.ReadOnly=b;
			 textBox2.ReadOnly=b;
			 textBox3.ReadOnly=b;
		}

		private void button10_Click(object sender, System.EventArgs e)
		{
			this.Close();
		}
	}
}