static extern TODO DataSources(TODO);

Declare Function DataSources Lib "odbccp32.dll" (TODO) As TODO

/// SQLDataSources returns information about a data source. This function is implemented solely by the Driver Manager.

static extern short SQLDataSources(IntPtr EnvironmentHandle, short Direction,

Declare Function SQLDataSources Lib "odbc32.dll" (ByVal EnvironmentHandle As Integer, ByVal Direction As Short, _

You must provide an Environment Handle provided by SQLAllocHandle as the first parameter. SQLAllocHandle is a replacement for SQLAllocEnv. When using SQLAllocHandle, you must call SQLSetEnvAttr and set the SQL_ATTR_ODBC_VERSION attribute to SQL_OV_ODBC3 before calling SQLDataSources. You must release Environment handle with SQLFreeHandle at the end.

public static List<string> GetOdbcDataSources()

    rc = SQLDataSources(sql_env_handle, SQL_FETCH_FIRST, dsn_name, (short)dsn_name.Capacity, ref dsn_name_len, desc_name, (short) desc_name.Capacity, ref desc_len);

        rc = SQLDataSources(sql_env_handle, SQL_FETCH_NEXT, dsn_name, (short)dsn_name.Capacity, ref dsn_name_len, desc_name, (short)desc_name.Capacity, ref desc_len);

        nResult = SQLDataSources(hEnv, Dir, sDSN, 64, iNameLen, sDesc, 64, iNameLen2)

            nResult = SQLDataSources(hEnv, Dir, sDSN, 64, iNameLen, sDesc, 64, iNameLen2)