从文本文件中读取并将其移动到数据库 [英] reading from text file and move it to database
问题描述
嗨bax
i希望逐行从文本文件中读取数据并将它们移动到数据库
我该怎么办呢请帮助我
示例数据:
1000次
2000分钟
2000秒
3000天
4000周
数字和单词之间的
是一个空格
[/ EDIT]
首先应创建一个可存储的数据来存储数据。然后你应该:
- 解析文本文件
- 将数据插入表中
您可以使用以下方法完成任务逐行方法:也就是说,对于输入文本的每一行,首先解析行本身,然后将提取的数据写入表的新记录。
解析这条线很简单:只需使用 string.split [ ^ ]方法(如果合适,使用Int32
解析方法见 [ ^ ])。
写入表格应该是也很简单:查看其中一个许多教程 [ ^ ]可用。
您可以使用OleDb对象读取文本文件...
看看我的p revious answer:读取文本文件特定列 [ ^ ]。虽然,解决方案是在VB.NET中,但您可以使用 VB.Net到C#转换器 [ ^ ]。
为了帮助您解决第二部分问题,您需要提供更多详细信息。请参阅CPallini的解决方案。
虽然这个答案有很多出错的地方,但这是一个简单的解决方案。
使用 System.Data.Linq;
使用 System.Data.Linq.Mapping;
命名空间 FileToDb
{
[数据库]
public class MyDataDB:DataContext
{
public MyDataDB() : base ( 数据源= ...);
public 表< MyData>迈德特;
}
[表格(名称= MyData) ]
public class MyData
{
[Column] public int 编号{ set ; get ; }
[列] public string 名称{设置跨度>; get ; }
}
public class 计划
{
public void Main()
{
var dbContext = new MyDataDB();
var lines = File.ReadAllLines( 路径跨度>);
foreach ( var line in 行)
{
var tokens = line.Split( new char [] {' '},StringSplitOptions。 RemoveEmptyEntries);
var data = new MyData();
data.Number = int .Parse(tokens [ 0 ]);
data.Name = tokens [ 1 ];
dbContext.MyData.InsertOnSubmit(data);
}
dbContext.SubmitChanges();
}
}
}
没有测试,因为我'我需要设置一个数据库。
我确实遗漏了验证码。你不应该! :-)
我非常依赖Abby Fichtner(Hacker Chick)的LINQ教程( 1 和 2
hi bax
i want reading data from a text file line by line and move them to data base
how can i do it please help me
[EDIT - moved from comments]
Example data:
1000 time
2000 min
2000 second
3000 day
4000 week
between number and word is one space
[/EDIT]
You should first create a sutable table to store your data in. Then you should:
- Parse your text file
- insert data into the table
You may accomplish the task with a line-by-line approach: that is, for each line of the input text, you first parse the line itself and then write the extracted data to a new record of the table.
Parsing the line is easy: just use string.split[^] method (then, if appropriate, useInt32
parsing methods see[^]).
Writing to the table should be easy too: check out one of the many many tutorials[^] available.
You can read text files using OleDb objects...
Have a look at my previous answer: Read Text File Specific Columns[^]. Although, the solution is in VB.NET, but you can use VB.Net to C# converter[^].
To help you with the second part of question, you need to provide more details. See CPallini''s solution.
Although there is a lot of room for going wrong in this answer, here is a simple solution.
using System.Data.Linq; using System.Data.Linq.Mapping; namespace FileToDb { [Database] public class MyDataDB : DataContext { public MyDataDB ( ) : base("Data Source=..." ); public Table<MyData> MyData; } [Table( Name = "MyData" )] public class MyData { [Column] public int Number { set; get; } [Column] public string Name { set; get; } } public class Program { public void Main() { var dbContext = new MyDataDB(); var lines = File.ReadAllLines("path"); foreach (var line in lines) { var tokens = line.Split(new char[]{' '}, StringSplitOptions.RemoveEmptyEntries); var data = new MyData(); data.Number = int.Parse(tokens[0]); data.Name = tokens[1]; dbContext.MyData.InsertOnSubmit(data); } dbContext.SubmitChanges(); } } }
didn''t test, because I''d need to set up a DB.
and I did leave out validation code. you shouldn''t! :-)
I heavily relied on LINQ tutorials by Abby Fichtner (Hacker Chick) (1 and 2
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