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如何用C#来合理部署数据库

2018-05-23 08:00 星期三 所属: 其他教程 浏览:547

获得知识的途径有很多,现在由小编为大家讲解有关语言编程的文章希望对大家有所帮助

C语言教程现在好多程序,都是与相关的,因此在做安装的时候,部署数据库看似是一件很复杂的事情。其实就我个人而言,部署数据库是很简单,大致的思路如下:
1. 用本身的DBMS来产生数据库创建的SQL脚本;
2. 接下来就是写程序来执行SQL脚本,从而达到创建数据库的目的。
 
以下用一个举例来说明,数据库服务器用的是。
 
首先要在数据库生成好的SQL脚本最前头,加入如下语句:
       use master
GO
      
if exists (select * from sysdatabases where name='mytest')
            drop database mytest
GO
      
create database mytest
GO
      
use mytest
GO
注:其中“mytest”是要创建的数据库名。

“IOBE 编程语言社区排行榜是编程语言流行趋势的一个指标,每月更新,这份排行榜排名基于互联网上有经验的程序员、课程和第三方厂商的数量。排名使用著名的搜索引擎(诸如 Google、MSN、Yahoo!、Wikipedia、YouTube 以及 Baidu 等)进行计算。请注意这个排行榜只是反映某个编程语言的热门程度,并不能说明一门编程语言好不好,或者一门语言所编写的代码数量多少。 教育资源可能会影响结果。例如Python是常用的学校和学习编程途径,成千上万的学生问问题和完成项目。不过根据我的经验来说,Python的工作相比PHP和Ruby来说是罕见的。Java也有类似的情况,因为它在教育、网络、桌面和移动发展上有各种各样的用途,所以它们的排名会相对靠前。
本地开发者的需求仍然很高,尤其是在相关工作的调查中可以看出。RedMonk报告Swift在不到六个月的时间里上升了46个排名达到第22位。然而应用开发是一门年轻的学科。目前有更多的Web和桌面编程职位空缺着。 “

 如何用C#来合理部署数据库
而程序的代码如下:C语言视频教程
//—————————Create DB————————————-
//————————————————————————-
//—File:frmCreateDB.cs
//—Description:The main form file to create database using specific SQL file
//—Author:Knight
//—Date:Mar.18, 2006
//————————————————————————-
//————————-{ Create DB }———————————–
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System..Forms;
using System.Data;
using System.Data.SqlClient;
 
using System.IO;
namespace CreateDB
{
    ///
    /// Summary description for frmCreateDB.
    ///
    public class frmCreateDB : System.Windows.Forms.Form
    {
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.TextBox txtServerName;
        private System.Windows.Forms.Label label2;
        private System.Windows.Forms.Label label3;
        private System.Windows.Forms.TextBox txtUserName;
        private System.Windows.Forms.TextBox txtPass;
        private System.Windows.Forms.Button btnCreateDB;
        ///
        /// Required designer vable.
        ///
        private System.ComponentModel.Container components = null;
 
        public frmCreateDB()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();
 
            //
            // TODO: Add any constructor code after InitializeComponent call
            //
        }
 
        ///
        /// Clean up any resources being used.
        ///
        protected override void Dispose( bool disposing )
        {
            if( disposing )
            {
                if (components != null)
                {
                    components.Dispose();
                }
            }
            base.Dispose( disposing );
        }
 
        #region Windows Form Designer generated code
        ///
        /// Required method for Designer support – do not modify
        /// the contents of this method with the code editor.
        ///
        private void InitializeComponent()
        {
            this.label1 = new System.Windows.Forms.Label();
            this.txtServerName = new System.Windows.Forms.TextBox();
            this.txtUserName = new System.Windows.Forms.TextBox();
            this.label2 = new System.Windows.Forms.Label();
            this.txtPassword = new System.Windows.Forms.TextBox();
            this.label3 = new System.Windows.Forms.Label();
            this.btnCreateDB = new System.Windows.Forms.Button();
            this.SuspendLayout();
            //
            // label1
            //
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(32, 32);
            this.label1.Name = “label1”;
            this.label1.Size = new System.Drawing.Size(74, 16);
            this.label1.TabIndex = 0;
            this.label1.Text = “Server Name:”;
            //
            // txtServerName
            //
            this.txtServerName.Location = new System.Drawing.Point(120, 32);
            this.txtServerName.Name = “txtServerName”;
            this.txtServerName.Size = new System.Drawing.Size(152, 20);
            this.txtServerName.TabIndex = 1;
            this.txtServerName.Text = “”;
            //
            // txtUserName
            //
            this.txtUserName.Location = new System.Drawing.Point(120, 64);
            this.txtUserName.Name = “txtUserName”;
            this.txtUserName.Size = new System.Drawing.Size(152, 20);
            this.txtUserName.TabIndex = 3;
            this.txtUserName.Text = “”;
            //
            // label2
            //
            this.label2.AutoSize = true;
            this.label2.Location = new System.Drawing.Point(40, 64);
            this.label2.Name = “label2”;
            this.label2.Size = new System.Drawing.Size(64, 16);
            this.label2.TabIndex = 2;
            this.label2.Text = “User Name:”;
            //
            // txtPassword
            //
            this.txtPassword.Location = new System.Drawing.Point(120, 96);
            this.txtPassword.Name = “txtPassword”;
            this.txtPassword.PasswordChar = '*';
            this.txtPassword.Size = new System.Drawing.Size(152, 20);
            this.txtPassword.TabIndex = 5;
            this.txtPassword.Text = “”;
            //
            // label3
            //
            this.label3.AutoSize = true;
            this.label3.Location = new System.Drawing.Point(48, 96);
            this.label3.Name = “label3”;
            this.label3.Size = new System.Drawing.Size(57, 16);
            this.label3.TabIndex = 4;
            this.label3.Text = “Password:”;
            //
            // btnCreateDB
            //
            this.btnCreateDB.Location = new System.Drawing.Point(168, 136);
            this.btnCreateDB.Name = “btnCreateDB”;
            this.btnCreateDB.Size = new System.Drawing.Size(104, 23);
            this.btnCreateDB.TabIndex = 6;
            this.btnCreateDB.Text = “&Create DB”;
            this.btnCreateDB.Click += new System.EventHandler(this.btnCreateDB_Click);
            //
            // frmCreateDBc语言编程入门
            //
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(306, 175);
            this.Controls.Add(this.btnCreateDB);
            this.Controls.Add(this.txtPassword);
            this.Controls.Add(this.label3);
            this.Controls.Add(this.txtUserName);
            this.Controls.Add(this.label2);
            this.Controls.Add(this.txtServerName);
            this.Controls.Add(this.label1);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
            this.MaximizeBox = false;
            this.Name = “frmCreateDB”;
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = “Create DB”;
            this.ResumeLayout(false);
 
        }
        #endregion
 
        ///
        /// The main entry point for the application.
        ///
        [STAThread]         static void Main()
        {
            Application.Run(new frmCreateDB());
        }
 
        private void btnCreateDB_Click(object sender, System.EventArgs e)
        {
            SqlConnection sqlConn = new SqlConnection();
  try
                {
                    sqlComm.ExecuteNonQuery();
                    return true;
                }
                catch( SqlException sqlErr )
                {
                    MessageBox.Show( sqlErr.Message );
                }
                catch
                {
                }
               
                sqlComm.Dispose();
            }
            return true;
        }
    }
}
 
       要注意的是在SQL脚本中的“\\\\r\\\\n”,在SQLCommand中是无法识别,因此要替换为空格;其次“GO” 在SQLCommand中也是无法识别,但为了使每条语句都执行,因此我在这里,用“;”来替换。
 
       注:程序的位置和SQL脚本文件的位置为同一目录下,如果觉得不方便的话,可以在我的基础上再延伸。

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