.net 动态创建sql数据库表

//必须的命名空间
using system;
using system.data;
using system.data.sqlclient;
//中间常规内容略
string tabname = "table1";
//声明要创建的表名，你也可以改为从textbox中获取；
string sqlstr = "create table ";
sqlstr += tabname + "( ";
sqlstr += "col0 numeric identity(1,1) primary key,";
//col0为列名，同样可以改为通过从textbox中获取
//identity(1,1)是标记递增种子
//primary key定义主键
sqlstr += "col1 varchar(20),";
sqlstr += "col2 smalldatetime,";
sqlstr += "col3 varchar(20),";
sqlstr += "col4 int,";
sqlstr += "col5 varchar(20),";
sqlstr += " )";

//实例化sql连接
sqlconnection conn = new sqlconnection("server=.; database=dbname; uid=sa; pwd=sa");
conn.open();
//实例化sql命令
sqlcommand cmd = new sqlcommand(sqlstr, conn);
//执行sql命令
cmd.executenonquery();
//关闭连接
conn.close();