Linq查询得到统计

Question

id | IsEnquiry  | 
=================
1      true
2      false
3      false
4      true

如何使用Linq查询获取IsEnquiry = true的id计数

请帮助我编写查询。

谢谢， 巴拉斯

Answer 1

int count = (from row in db.Table
             where row.IsEnquiry == true
             select row).Count();

Answer 2

试试这个

var count = db.Table.Where(x=>x.IsEnquiry).Count()

Answer 3

尝试以下代码：

int count = (from tableObj in TableName 
             where tableObj
             .Website == "http://mywebsite.com" 
             select tableObj 
             .Website).Count()

Answer 4

尝试一下：

int count = (from row in db.Table
             where row.IsEnquiry == true
             select row.id).Count();