如何在LINQ中动态添加或删除where子句

var query = from item in collection
            where (condition) ? item.Property == value : true
            select item;

public Expression<Func<T, bool>> GetWhereClause(bool condition)
{
    if (condition)
    {
        return item => item.Property == value;
    }
    else
    {
        return item => true;
    }
}

var query = collection.Where(GetWhereClause(condition));

var query = from item in collection
            where (condition) ? item.Property == value : true
            select item;

if (condition)
{
    query = query.Where(item => item.Property2 == value2);
}

bool executeQuery = true;

if (condition)
{
    query = query.Where(item => item.Property2 == value2);
    executeQuery = false;
}

if (executeQuery)
{
    var result = query.ToList();
}