Oledb和visual foxpro

Question

如何在为c＃中的visual fox pro（.dbf）创建表时为字段设置索引（使用oledb）。我想为一个表创建多个索引，并且一些索引是表达式（field1 + field2）。

Answer 1

下面是一个例子：

using(var connection = new OleDbConnection(@"provider=vfpoledb;data source=c:\")) { 
    using(var command = connection.CreateCommand()) { 
     connection.Open(); 
     command.CommandText = "CREATE TABLE Table1(Column1 v(10), Column2 v(10))"; 
     command.ExecuteNonQuery(); 
     command.CommandText = "EXECSCRIPT([USE Table1 IN SELECT(0) EXCLUSIVE])";   
     command.ExecuteNonQuery(); 
     command.CommandText = "EXECSCRIPT([INDEX ON Column1 TAG Tag1])"; 
     command.ExecuteNonQuery(); 
     command.CommandText = "EXECSCRIPT([INDEX ON Column1 + Column2 TAG Tag2])"; 
     command.ExecuteNonQuery();   
     connection.Close(); 
    } 
}