System.Linq.Dynamic.Core 我们常使用的功能

/// <summary>

/// 学生模型

/// </summary>

public class StudentModel

{

/// <summary>

/// 姓名

/// </summary>

public string Name { get; set; }

/// <summary>

/// 年龄

/// </summary>

public int Age { get; set; }

}/// <summary>

/// 参数化动态解析

/// </summary>

public bool Dynamic Expression(string userName, int userAge, string expression)

{

//组织数据

var model = new StudentModel

{

Name = userName,

Age = userAge

};

var lambdaExpression = expression;

var lambda = DynamicExpressionParser.ParseLambda<www.laipuhuo.com StudentModel, bool>(ParsingConfig.Default, true, lambdaExpression).Compile().DynamicInvoke(model);

return (bool)lambda;

}

/// <summary>

/// 参数化动态解析

/// </summary>

public int www.laipuhuo.com DynamicExpressionSelectData(string expression)

{

//组织数据

var list = new List<StudentModel>()

{

new StudentModel

{

Name = "张三",

Age= 18,

},

new StudentModel

{

Name = "李四",

Age= 19,

}

,

new StudentModel

{

Name = "王五",

Age= 30,

}

};

// "张三,李四".Contains(Name) && (Age==19 || Age==18)

var count = list.www.laipuhuo.com AsQueryable().Where(expression).ToList().Count;

return count;

}