LINQ多个where和if语句

Question

如何多次使用LINQ对数据进行排序？我试过跟随，但它只是返回所有客户。

var query = this.dbContext.Customers;
if (!string.IsNullOrEmpty(sortFilterName))
{
    query.Where(q => q.Name.Equals(sortFilterName));
}
if (!string.IsNullOrEmpty(sortFilterAddress))
{
    query.Where(q => q.Adress.Equals(sortFilterAddress));
}
return query.ToList();

Answer 1

您需要将query变量分配给过滤结果：

var query = this.dbContext.Customers;
if (!string.IsNullOrEmpty(sortFilterName))
{
    query = query.Where(q => q.Name.Equals(sortFilterName));
}
if (!string.IsNullOrEmpty(sortFilterAddress))
{
    query = query.Where(q => q.Adress.Equals(sortFilterAddress));
}
return query.ToList();