Nhibernate Criteria 多个or条件以及Like查询

Nhibernate Criteria 多个or条件以及Like查询

添加引用:using NHibernate.Criterion;
//创建查询条件集合
 IList<ICriterion> query = new List<ICriterion>();

 1. 调用Expression.Or
query.Add(Expression.Or(Expression.Like("UserName", whereTxt.ToLower(), MatchMode.Anywhere), Expression.Like("Account", whereTxt.ToLower(), MatchMode.Anywhere)));

 2. 调用Restrictions.Or
query.Add(Restrictions.Or(Expression.Like("UserName", whereTxt.ToLower(), MatchMode.Anywhere), Expression.Like("Account", whereTxt.ToLower(), MatchMode.Anywhere)));

 3. 直接使用||符号连接
query.Add(Expression.Like("UserName", whereTxt.ToLower(), MatchMode.Anywhere) || Expression.Like("Account", whereTxt.ToLower(), MatchMode.Anywhere));

对MatchMode介绍一下。

public abstract class MatchMode
    {
        //表示  %参数%
        public static readonly MatchMode Anywhere;
        //表示  参数%
        public static readonly MatchMode End;
        //表示  参数
        public static readonly MatchMode Exact;
        //表示  %参数
        public static readonly MatchMode Start;

        protected MatchMode(int intCode, string name);

        public abstract string ToMatchString(string pattern);
        public override string ToString();
    }

MatchMode.START:字符串在最前面的位置.相当于”like ‘key%’”
MatchMode.END:字符串在最后面的位置.相当于”like ‘%key’”
MatchMode.ANYWHERE:字符串在中间匹配.相当于”like ‘%key%’”
MatchMode.EXACT:字符串精确匹配.相当于”like ‘key’”

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转载自blog.csdn.net/xhl_james/article/details/78192692