//-------------------SQL Server连接数据库字符串-------------20161216-----------------------------
Data Source=服务器地址; Initial Catalog=数据库名;User ID=sa;Password=sa
//-------------------ACCESS连接数据库字符串----------20161216-----------------------------
Provider=Microsoft.ACE.OLEDB.12.0;Data Source=data.accdb 连接没加密数据库存字符串
Provider=Microsoft.ACE.OLEDB.12.0;Data Source=data.accdb;Jet OLEDB:Database Password=123456 连接加密数据库存字符串
注释：data.accdb ACCESS文件 直接这样写为程序根目录
//--------------------SQLite连接字符串-----20171031-------------------
Data Source= address.db;Pooling=true;FailIfMissing=false
注释：address.db为Sqlite文件，这样写为程序的根目录
//--------------------Oracle连接字符串-----20180506-------------------
data source = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = IP地址)(PORT = 端串口号默认的是1521)))(CONNECT_DATA = (SERVICE_NAME = 实体名))); User ID = 帐号; Password = 密码; Pooling = True; Max Pool Size = 10; Min Pool Size = 1;
//--------------------Mysql连接字符串-----20210714-------------------Database=lqwvje;Data Source=192.168.0.105;User Id=root;Password=12345678;pooling=false;CharSet=utf8;port=3306 原文链接：C#,连接数据库字符串汇总-罗分明网络博客 (luofenming.com)
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/// <summary>
///SQL Server 测试数据是否连接 20180522
/// </summary>
/// <param name="connStr">连接字符串</param>
/// <returns></returns>
public string TestConnection(string connStr)
{
try
{
//SqlConnection是SQL server OleDbConnection是Access不同的数据库不一样
using (SqlConnection connection = new SqlConnection(connStr))
{
connection.Open();
if (connection.State.ToString().Contains("Open"))
{
return "连接成功";
}
else
{
return "未连接成功";
}
}
}
catch (Exception ex)
{
return ex.Message;
}
}
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