If we want to connect to many databases in dataaccess layer
such as MSAccess,Sql server,oracle means not to a particular
database depends on condition we have to connect to
appropriate database in this scenario if we without changing
code Ho wdo you handle this situation?
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Answer Posted / suresh jayaraman
<configuration>
<appSettings>
<add key="AccessDatabase" value="Data
Source=servername;Initial
Catalog=databasename;uid=userid;pwd=password"/>
<add key="SqlServerDatabase" value="Data
Source=servername;Initial
Catalog=databasename;uid=userid;pwd=password"/>
</appSettings>
</configuration>
and use this Key name where it is needed
If you need SqlServer DataBase
using System.Data.SqlClient;
in DataAcess Layer
public SqlConnection Connection()
{
try
{
con = new SqlConnection
(ConfigurationManager.AppSettings
["SqlServerDatabase"].ToString().Trim());
return con;
}
catch (Exception exp)
{
throw exp;
}
}
| Is This Answer Correct ? | 2 Yes | 4 No |
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