如何使用C#操作SQLite数据库
前面的文章已经介绍了SQLite数据库和ADO.NET Provider for SQLite, 现在介绍下如何使用c#操作SQLite数据库。1. 到 http://sourceforge.net/projects/sqlite-dotnet2/files/ 下载ADO.NET provider for the SQLite database engine. 然后安装。
2. 在VS 2005 新建控制台程序，然后添加引用System.Data.SQLite.dll，该文件在ADO.NET provider for the SQLite 安装目录的bin目录下。
3. using 该命名空间，就可以和使用其他ADO.NET Provider一样使用它了。
代码如下：
Code
<!-- <br/><br/>Code highlighting produced by Actipro CodeHighlighter (freeware)<br/>http://www.CodeHighlighter.com/<br/><br/>-->static void Main(string[] args)
{
string datasource = "c:/test.db";
if( !System.IO.File.Exists( datasource ))
SQLiteConnection.CreateFile(datasource);
SQLiteConnection conn = new SQLiteConnection();
SQLiteConnectionStringBuilder conStr = new SQLiteConnectionStringBuilder();
conStr.DataSource = datasource;
conn.ConnectionString = conStr.ToString();
//open connetcion
conn.Open();
SQLiteCommand cmd = new SQLiteCommand();
string sql = string.Empty;
cmd.Connection = conn;
/*
//create a table
string sql = "CREATE TABLE test(username varchar(20),password varchar(20));";
cmd.CommandText = sql;
cmd.Connection = conn;
cmd.ExecuteNonQuery();
*/
//insert data
for (int i = 0; i <= 10; i++)
{
sql = "INSERT INTO test VALUES('cola','mypassword')";
cmd.CommandText = sql;
cmd.ExecuteNonQuery();
}
sql = "SELECT * FROM test";
cmd.CommandText = sql;
using (SQLiteDataReader reader = cmd.ExecuteReader())
{
while (reader.Read())
{
Console.WriteLine(reader["username"].ToString() + "---" + reader["password"].ToString());
}
}
conn.Close();
Console.Read();
}
运行结果：
cola---mypassword
cola---mypassword
cola---mypassword
cola---mypassword
cola---mypassword
cola---mypassword
cola---mypassword
cola---mypassword
cola---mypassword
cola---mypassword
cola---mypassword
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