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_3_1
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.GroupBox groupBox1;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.TextBox textBox2;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.ComboBox comboBox1;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.DataGrid dataGrid1;
		/// <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.groupBox1 = new System.Windows.Forms.GroupBox();
			this.button1 = new System.Windows.Forms.Button();
			this.comboBox1 = new System.Windows.Forms.ComboBox();
			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.dataGrid1 = new System.Windows.Forms.DataGrid();
			this.groupBox1.SuspendLayout();
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
			this.SuspendLayout();
			// 
			// groupBox1
			// 
			this.groupBox1.Controls.Add(this.button1);
			this.groupBox1.Controls.Add(this.comboBox1);
			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(1, 8);
			this.groupBox1.Name = "groupBox1";
			this.groupBox1.Size = new System.Drawing.Size(399, 48);
			this.groupBox1.TabIndex = 0;
			this.groupBox1.TabStop = false;
			this.groupBox1.Text = "查询条件";
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(312, 16);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(48, 24);
			this.button1.TabIndex = 8;
			this.button1.Text = "查询";
			this.button1.Click += new System.EventHandler(this.query);
			// 
			// comboBox1
			// 
			this.comboBox1.Items.AddRange(new object[] {
														   "所有",
														   "男",
														   "女"});
			this.comboBox1.Location = new System.Drawing.Point(252, 16);
			this.comboBox1.Name = "comboBox1";
			this.comboBox1.Size = new System.Drawing.Size(48, 20);
			this.comboBox1.TabIndex = 5;
			this.comboBox1.Text = "所有";
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(217, 20);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(32, 24);
			this.label3.TabIndex = 4;
			this.label3.Text = "性别";
			// 
			// textBox2
			// 
			this.textBox2.Location = new System.Drawing.Point(131, 16);
			this.textBox2.Name = "textBox2";
			this.textBox2.Size = new System.Drawing.Size(72, 21);
			this.textBox2.TabIndex = 3;
			this.textBox2.Text = "";
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(98, 20);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(32, 24);
			this.label2.TabIndex = 2;
			this.label2.Text = "姓名";
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(40, 15);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(48, 21);
			this.textBox1.TabIndex = 1;
			this.textBox1.Text = "";
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(9, 21);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(32, 24);
			this.label1.TabIndex = 0;
			this.label1.Text = "学号";
			// 
			// dataGrid1
			// 
			this.dataGrid1.CaptionVisible = false;
			this.dataGrid1.DataMember = "";
			this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
			this.dataGrid1.Location = new System.Drawing.Point(0, 64);
			this.dataGrid1.Name = "dataGrid1";
			this.dataGrid1.RowHeadersVisible = false;
			this.dataGrid1.Size = new System.Drawing.Size(400, 136);
			this.dataGrid1.TabIndex = 1;
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(400, 205);
			this.Controls.Add(this.dataGrid1);
			this.Controls.Add(this.groupBox1);
			this.Name = "Form1";
			this.Text = "学生档案查询";
			this.Load += new System.EventHandler(this.Form1_Load);
			this.groupBox1.ResumeLayout(false);
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// 应用程序的主入口点。
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new Form1());
		}
    	private SqlDataAdapter sqlDataAdapter;
		private DataSet dataSet;
		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 student where studID like @studID and studName like @studName and studSex like @studSex";
			 sqlCommand.Parameters.Add("@studID",System.Data.SqlDbType.VarChar,10,"studID");
			 sqlCommand.Parameters.Add("@studName",System.Data.SqlDbType.VarChar,10,"studName");
			 sqlCommand.Parameters.Add("@studSex",System.Data.SqlDbType.VarChar,2,"studSex");
			 sqlCommand.Parameters["@studID"].Value="%";
			 sqlCommand.Parameters["@studName"].Value="%";
			 sqlCommand.Parameters["@studSex"].Value ="%";
			
			 sqlDataAdapter=new SqlDataAdapter(); 
			 dataSet=new DataSet();
			 sqlDataAdapter.SelectCommand=sqlCommand;
			 sqlDataAdapter.Fill(dataSet,"Student");
			 dataGrid1.DataSource=dataSet;
			 dataGrid1.DataMember="Student"; 
		}
		private void query(object sender, System.EventArgs e)
		{
			try
			{
				if(textBox1.Text=="")
					sqlDataAdapter.SelectCommand.Parameters["@studID"].Value="%";
				else
					sqlDataAdapter.SelectCommand.Parameters["@studID"].Value = textBox1.Text;
				if(textBox2.Text=="")
					sqlDataAdapter.SelectCommand.Parameters["@studName"].Value="%";
				else
					sqlDataAdapter.SelectCommand.Parameters["@studName"].Value = textBox2.Text;
				if(comboBox1.SelectedIndex==0)
					sqlDataAdapter.SelectCommand.Parameters["@studSex"].Value ="%";
				else if(comboBox1.SelectedIndex==1)
					sqlDataAdapter.SelectCommand.Parameters["@studSex"].Value ="男";
				else
					sqlDataAdapter.SelectCommand.Parameters["@studSex"].Value ="女";
				dataSet.Tables["Student"].Clear();
				sqlDataAdapter.Fill(dataSet,"Student");
			}
			catch(SqlException ee){MessageBox.Show(ee.Message);}
		}
	}
}