connectform.cs

《数据库原理及应用》-刘玉宝主编-源代码

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

namespace KTMIS
{
	/// <summary>
	/// ConnectForm 的摘要说明。
	/// </summary>
	public class ConnectForm : System.Windows.Forms.Form
	{
		private System.Data.SqlClient.SqlConnection sqlConnection;

		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.Label label4;
		private System.Windows.Forms.TextBox tbServer;
		private System.Windows.Forms.TextBox tbDataBase;
		private System.Windows.Forms.TextBox tbUser;
		private System.Windows.Forms.Button btnConnect;
		private System.Windows.Forms.Button btnReset;
		private System.Windows.Forms.Button btnCancel;
		private System.Windows.Forms.Button btnDefault;
		private System.Windows.Forms.TextBox tbPwd;
		/// <summary>
		/// 必需的设计器变量。
		/// </summary>
		private System.ComponentModel.Container components = null;

		public ConnectForm()
		{
			//
			// 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()
		{
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(ConnectForm));
			this.label1 = new System.Windows.Forms.Label();
			this.label2 = new System.Windows.Forms.Label();
			this.label3 = new System.Windows.Forms.Label();
			this.label4 = new System.Windows.Forms.Label();
			this.tbServer = new System.Windows.Forms.TextBox();
			this.tbDataBase = new System.Windows.Forms.TextBox();
			this.tbUser = new System.Windows.Forms.TextBox();
			this.tbPwd = new System.Windows.Forms.TextBox();
			this.btnConnect = new System.Windows.Forms.Button();
			this.btnReset = new System.Windows.Forms.Button();
			this.btnDefault = new System.Windows.Forms.Button();
			this.btnCancel = new System.Windows.Forms.Button();
			this.SuspendLayout();
			// 
			// label1
			// 
			this.label1.Location = new System.Drawing.Point(16, 16);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(56, 23);
			this.label1.TabIndex = 0;
			this.label1.Text = "服务器：";
			this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
			// 
			// label2
			// 
			this.label2.Location = new System.Drawing.Point(16, 56);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(56, 23);
			this.label2.TabIndex = 1;
			this.label2.Text = "数据库：";
			this.label2.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
			// 
			// label3
			// 
			this.label3.Location = new System.Drawing.Point(16, 96);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(56, 23);
			this.label3.TabIndex = 2;
			this.label3.Text = "用户名：";
			this.label3.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
			// 
			// label4
			// 
			this.label4.Location = new System.Drawing.Point(16, 136);
			this.label4.Name = "label4";
			this.label4.Size = new System.Drawing.Size(56, 23);
			this.label4.TabIndex = 3;
			this.label4.Text = "密  码：";
			this.label4.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
			// 
			// tbServer
			// 
			this.tbServer.Location = new System.Drawing.Point(72, 16);
			this.tbServer.Name = "tbServer";
			this.tbServer.Size = new System.Drawing.Size(128, 21);
			this.tbServer.TabIndex = 0;
			this.tbServer.Text = "";
			// 
			// tbDataBase
			// 
			this.tbDataBase.Location = new System.Drawing.Point(72, 56);
			this.tbDataBase.Name = "tbDataBase";
			this.tbDataBase.Size = new System.Drawing.Size(128, 21);
			this.tbDataBase.TabIndex = 1;
			this.tbDataBase.Text = "";
			// 
			// tbUser
			// 
			this.tbUser.Location = new System.Drawing.Point(72, 96);
			this.tbUser.Name = "tbUser";
			this.tbUser.Size = new System.Drawing.Size(128, 21);
			this.tbUser.TabIndex = 2;
			this.tbUser.Text = "";
			// 
			// tbPwd
			// 
			this.tbPwd.Location = new System.Drawing.Point(72, 136);
			this.tbPwd.Name = "tbPwd";
			this.tbPwd.PasswordChar = '*';
			this.tbPwd.Size = new System.Drawing.Size(128, 21);
			this.tbPwd.TabIndex = 3;
			this.tbPwd.Text = "";
			// 
			// btnConnect
			// 
			this.btnConnect.Cursor = System.Windows.Forms.Cursors.Hand;
			this.btnConnect.Location = new System.Drawing.Point(216, 16);
			this.btnConnect.Name = "btnConnect";
			this.btnConnect.TabIndex = 4;
			this.btnConnect.Text = "连  接";
			this.btnConnect.Click += new System.EventHandler(this.btnConnect_Click);
			// 
			// btnReset
			// 
			this.btnReset.Cursor = System.Windows.Forms.Cursors.Hand;
			this.btnReset.Location = new System.Drawing.Point(216, 56);
			this.btnReset.Name = "btnReset";
			this.btnReset.TabIndex = 5;
			this.btnReset.Text = "复  位";
			this.btnReset.Click += new System.EventHandler(this.btnReset_Click);
			// 
			// btnDefault
			// 
			this.btnDefault.Cursor = System.Windows.Forms.Cursors.Hand;
			this.btnDefault.Location = new System.Drawing.Point(216, 96);
			this.btnDefault.Name = "btnDefault";
			this.btnDefault.TabIndex = 6;
			this.btnDefault.Text = "默  认";
			this.btnDefault.Click += new System.EventHandler(this.btnDefault_Click);
			// 
			// btnCancel
			// 
			this.btnCancel.Cursor = System.Windows.Forms.Cursors.Hand;
			this.btnCancel.Location = new System.Drawing.Point(216, 136);
			this.btnCancel.Name = "btnCancel";
			this.btnCancel.TabIndex = 7;
			this.btnCancel.Text = "取  消";
			this.btnCancel.Click += new System.EventHandler(this.btnCancel_Click);
			// 
			// ConnectForm
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
			this.ClientSize = new System.Drawing.Size(304, 173);
			this.Controls.Add(this.btnCancel);
			this.Controls.Add(this.btnDefault);
			this.Controls.Add(this.btnReset);
			this.Controls.Add(this.btnConnect);
			this.Controls.Add(this.tbPwd);
			this.Controls.Add(this.tbUser);
			this.Controls.Add(this.tbDataBase);
			this.Controls.Add(this.tbServer);
			this.Controls.Add(this.label4);
			this.Controls.Add(this.label3);
			this.Controls.Add(this.label2);
			this.Controls.Add(this.label1);
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
			this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
			this.MaximizeBox = false;
			this.MinimizeBox = false;
			this.Name = "ConnectForm";
			this.ShowInTaskbar = false;
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "连接服务器";
			this.Load += new System.EventHandler(this.ConnectForm_Load);
			this.ResumeLayout(false);

		}
		#endregion

		private void ConnectForm_Load(object sender, System.EventArgs e)
		{
			this.btnReset_Click(null, null);
		}

		private void btnConnect_Click(object sender, System.EventArgs e)
		{
			string connectionString;
			connectionString = "data source =" + this.tbServer.Text.Trim() + ";";
			connectionString += "user id =" + this.tbUser.Text.Trim() + ";";
			connectionString += "pwd =" + this.tbPwd.Text.Trim() + ";";
			connectionString += "initial catalog =" + this.tbDataBase.Text.Trim();	

			this.sqlConnection = new System.Data.SqlClient.SqlConnection(connectionString);
			try
			{
				this.sqlConnection.Open();

				MessageBox.Show("连接目标服务器成功！", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
				//this.mainForm.disConnect = false;

				this.Close();
			}
			catch//(Exception caught)
			{
				this.sqlConnection = null;

				MessageBox.Show("连接目标服务器失败！", "系统提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
			}
			finally
			{
				this.sqlConnection.Close();
			}

		}

		private void btnReset_Click(object sender, System.EventArgs e)
		{
			this.tbServer.Text = this.tbServer.Tag.ToString();
			this.tbDataBase.Text = this.tbDataBase.Tag.ToString();
			this.tbUser.Text = this.tbUser.Tag.ToString();
			this.tbPwd.Text = this.tbPwd.Tag.ToString();	
		}

		private void btnDefault_Click(object sender, System.EventArgs e)
		{
			this.tbServer.Text = "(local)";
			this.tbDataBase.Text = "KTMIS";
			this.tbUser.Text = "sa";
			this.tbPwd.Text = "";	
		}

		private void btnCancel_Click(object sender, System.EventArgs e)
		{
			MessageBox.Show("尚未连接到目标服务器！", "系统警告", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
			this.Close();
		}

		public void SetConnectStr(string[] connectStr)
		{
			this.tbServer.Tag = connectStr[0];
			this.tbDataBase.Tag = connectStr[1];
			this.tbUser.Tag = connectStr[2];
			this.tbPwd.Tag = connectStr[3];
		}

		public void GetConnectStr(ref string[] connectStr)
		{
			connectStr[0] = this.tbServer.Text.Trim();
			connectStr[1] = this.tbUser.Text.Trim();
			connectStr[2] = this.tbPwd.Text.Trim();
			connectStr[3] = this.tbDataBase.Text.Trim();	
		}

		public System.Data.SqlClient.SqlConnection Connection
		{
			get
			{
				return this.sqlConnection;
			}
			set
			{
				this.sqlConnection = value;
			}
		}
	}
}