我正在尝试func<T, bool>
使用EF.Functions.Like
in进行评估,但是在调用方法CSharpScript.EvaluateAsync
时运行时出现错误(当前上下文中不存在名称 'EF') 。GetPredicate()
创建函数方法:
public static class Helper
{
public static async Task<Func<T, bool>> GetPredicate<T>(string stringExpression)
{
ScriptOptions options = ScriptOptions.Default.AddReferences(references: typeof(T).Assembly);
Func<T, bool> discountFilterExpression = await CSharpScript.EvaluateAsync<Func<T, bool>>(stringExpression, options);
return discountFilterExpression;
}
}
调用方法:
string expString = "x => EF.Functions.Like(x.CodeId, pattern) || EF.Functions.Like(x.Name, pattern) || EF.Functions.Like(x.CategoryId, pattern)";
Func<MyClass, bool> exp = await Helper.GetPredicate<MyClass>(expString);
这个怎么做?