storedprocedure.cs

Csharp实例编程百例.rar

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

namespace StoredProcedureApp
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		private System.Windows.Forms.ListView listView1;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Button button1;
		private System.Windows.Forms.TextBox textBox1;
		private System.Data.SqlClient.SqlConnection sqlConnection1;
		/// <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 Form Designer generated code
		/// <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.listView1 = new System.Windows.Forms.ListView();
			this.label1 = new System.Windows.Forms.Label();
			this.button1 = new System.Windows.Forms.Button();
			this.textBox1 = new System.Windows.Forms.TextBox();
			this.sqlConnection1 = new System.Data.SqlClient.SqlConnection();
			this.SuspendLayout();
			// 
			// listView1
			// 
			this.listView1.GridLines = true;
			this.listView1.Location = new System.Drawing.Point(48, 48);
			this.listView1.Name = "listView1";
			this.listView1.Size = new System.Drawing.Size(264, 120);
			this.listView1.TabIndex = 0;
			this.listView1.View = System.Windows.Forms.View.Details;
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(48, 24);
			this.label1.Name = "label1";
			this.label1.TabIndex = 1;
			this.label1.Text = "Result";
			// 
			// button1
			// 
			this.button1.Location = new System.Drawing.Point(48, 200);
			this.button1.Name = "button1";
			this.button1.Size = new System.Drawing.Size(128, 32);
			this.button1.TabIndex = 2;
			this.button1.Text = "Input=EmployeeID";
			this.button1.Click += new System.EventHandler(this.button1_Click);
			// 
			// textBox1
			// 
			this.textBox1.Location = new System.Drawing.Point(200, 208);
			this.textBox1.Name = "textBox1";
			this.textBox1.TabIndex = 3;
			this.textBox1.Text = "";
			// 
			// Form1
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(352, 278);
			this.Controls.AddRange(new System.Windows.Forms.Control[] {
																		  this.textBox1,
																		  this.button1,
																		  this.label1,
																		  this.listView1});
			this.Name = "Form1";
			this.Text = "StoredProcedure";
			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 button1_Click(object sender, System.EventArgs e)
		{
			try
			{
				//clear the list view
				listView1.Columns.Clear();
				listView1.Items.Clear();

				//Create a connection
				SqlConnection cn = new SqlConnection(@"Data Source=(local);" + 
					"Integrated Security=SSPI;database=NorthWind");
							
				//Create a command object
				SqlCommand cmd= cn.CreateCommand();
				
				//Specify the stored procedure that is to be executed
				cmd.CommandType= CommandType.StoredProcedure;
				cmd.CommandText="Orders_ByEmployeeId";
			
				//Create a parameter object to provide the input
				SqlParameter parInput = cmd.Parameters.Add("@EmployeeId", SqlDbType.Int);
				parInput.Direction = ParameterDirection.Input;
				parInput.Value= Convert.ToInt32(textBox1.Text);

				//Open the connection
				cn.Open();

				//execute the command and display the results
				//Create a datareader object
				SqlDataReader dr=cmd.ExecuteReader();
			
				//Get the colummn names of the datareader and show in the listview's columns
			
				for (int i=0; i< dr.FieldCount; i++)
				{
					ColumnHeader c = new ColumnHeader();
					c.Text=dr.GetName(i);
					listView1.Columns.Add(c);
				}
				//Get the values of each row in the datareader and show them in the list view
				ListViewItem itmX; 
				while (dr.Read())
				{
					//create the list view item				
					itmX=new ListViewItem();				
					//specify the text and subitems of the list view

					itmX.Text= dr.GetValue(0).ToString();
					for (int i=1 ; i< dr.FieldCount; i++)
					{                 
						itmX.SubItems.Add(dr.GetValue(i).ToString());
					}
					//Add the item to the list view's  Items collection
					listView1.Items.Add(itmX);				

				}
				//close the reader
				dr.Close();

				cn.Close();
			}
			catch ( System.Data.SqlClient.SqlException  e1)
			{
				// Display the error message.
				MessageBox.Show ("There was an error in executing the SQL Command. Error Message:" + e1.Message);
			}
		}

	}
}