shujukuchaxun.txt

数据库查询程序示例

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

namespace WindowsApplication2
{
	/// <summary>
	/// Summary description for Form4.
	/// </summary>
	public class Form4 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.TextBox textBox1;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.DataGrid dataGrid1;
		private System.Windows.Forms.Button button1;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public Form4()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.label1 = new System.Windows.Forms.Label();
			this.dataGrid1 = new System.Windows.Forms.DataGrid();
			this.button1 = new System.Windows.Forms.Button();
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).BeginInit();
			this.SuspendLayout();
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(208, 32);
			this.textBox1.Name = "textBox1";
			this.textBox1.Size = new System.Drawing.Size(96, 21);
			this.textBox1.TabIndex = 0;
			this.textBox1.Text = "";
			// 
			// label1
			// 
			this.label1.Font = new System.Drawing.Font("SimSun", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
			this.label1.Location = new System.Drawing.Point(144, 32);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(56, 32);
			this.label1.TabIndex = 1;
			this.label1.Text = "学号";
			// 
			// dataGrid1
			// 
			this.dataGrid1.DataMember = "";
			this.dataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText;
			this.dataGrid1.Location = new System.Drawing.Point(136, 88);
			this.dataGrid1.Name = "dataGrid1";
			this.dataGrid1.Size = new System.Drawing.Size(288, 144);
			this.dataGrid1.TabIndex = 2;
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(240, 256);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(80, 24);
			this.button1.TabIndex = 3;
			this.button1.Text = "查询";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// Form4
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(608, 341);
			this.Controls.Add(this.button1);
			this.Controls.Add(this.dataGrid1);
			this.Controls.Add(this.label1);
			this.Controls.Add(this.textBox1);
			this.Name = "Form4";
			this.Text = "Form4";
			((System.ComponentModel.ISupportInitialize)(this.dataGrid1)).EndInit();
			this.ResumeLayout(false);

		}
		#endregion

		private void button1_Click(object sender, System.EventArgs e)
		{
			string constr= "workstation id=XAUT;packet size=4096;integrated security=SSPI;data source=XAUT;pe" +
				"rsist security info=False;initial catalog=xsgl";
			string sq1="select * from student where (sno='"+textBox1.Text+"')";
			SqlConnection cn1=new SqlConnection(constr);
			SqlDataAdapter sqlDataAdapter1=new SqlDataAdapter(sq1,cn1);
			DataSet dt1=new DataSet();
			sqlDataAdapter1.Fill(dt1,"Student");
			dataGrid1.SetDataBinding(dt1,"Student");

		}
	}
}