如何用C#来合理部署数据库
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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。 “
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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