c# - 带有复选框 where 条件组合的 linq to sql 查询

Question

如果选中了 chkAus 复选框:

if (chkAus.Checked)
                {
                    vAdvanceSearchResults  = (from t in vAdvanceSearchResults
                                    join imp in _bDataContext.Imprints on t.ImprintID equals imp.ID
                                    join cc in _bDataContext.CountryCodes on imp.CountryID equals cc.ID
                                    where cc.Code.Contains("AU")
                                    select t).Distinct();**
                }

如果检查了 chkAus 和 chkNz

if (chkNz.Checked && chkAus.Checked)
            {
                vAdvanceSearchResults = (from t in vAdvanceSearchResults
                                join imp in _bDataContext.Imprints on t.ImprintID equals imp.ID
                                join cc in _bDataContext.CountryCodes on imp.CountryID equals cc.ID
                                where cc.Code.Contains("AU") || cc.Code.Contains("NZ")
                                select t).Distinct();
            }

当选中复选框时，linq 查询的条件会发生变化。

where cc.Code.Contains("AU") || cc.Code.Contains("NZ")

我有近 10 个复选框，但不知道如何编写这么多条件。 请提供任何帮助。

例如，如果有 chkUS : 那么与 chkAus,chkNz,chkUS 复选框的组合 linq 查询将会改变。

where cc.Code.Contains("AU") || cc.Code.Contains("NZ") || cc.Code.Contains("US")

Answer 1

将它们全部放入列表中，然后执行 if list.contains(cc.Code)

var a = new List<string>(){"AU","NZ","US"};
var linq =  (from t in vAdvanceSearchResults
                                join imp in _bDataContext.Imprints on t.ImprintID equals imp.ID
                                join cc in _bDataContext.CountryCodes on imp.CountryID equals cc.ID
                                where a.Contains(cc.Code)
                                select t).Distinct();