access自动编号,标准表达式中数据类型不匹配
自己想做一个在文本框输入留言的 编号 (ID),来查询留言内容的功能, 但access中 自动 编号 的 标准 表达式 中 数据 类型 不 匹配 所拦住,经过分析,查看资料,自己找到了一个解决方法,在这里 分享一下 文本框的名字为txtyhid //将如果写成 //String sql =
自己想做一个在文本框输入留言的编号(ID),来查询留言内容的功能,
但access中自动编号的标准表达式中数据类型不匹配所拦住,经过分析,查看资料,自己找到了一个解决方法,在这里分享一下
文本框的名字为txtyhid
//将如果写成
//String sql = "select * from yhly where lyr=" + txtyhcx.Text+"'";
//或者进行整形转换String sql = "select * from yhly where lyr=" +int.Parse( txtyhcx.Text)+"'";
//或者进行长整形转换
本人的解决方案,将自动编号的SQL语句分解开
String sql = "select * from yhly where ID=";
String sql1 = sql + txtyhid.Text;

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