/// <summary>
/// 获取数据库连接
/// </summary>
/// <param name="connStr">数据库连接语句</param>
/// <returns></returns>
public OleDbConnection GetDbConnection(string connStr = null)
{
if (string.IsNullOrWhiteSpace(connStr))
{
connStr = DbConnectionString;
}
if (connStr.Trim().ToLower() == DbConnectionString.Trim().ToString() && DbConnection != null)
{
return(DbConnection);
}
else
{
return(new OleDbConnection(DbConnectionString));
}
}
