小编Han*_*tie的帖子

使用 EF Core 查询数据库时，可以.Where在执行查询之前轻松有条件地向查询添加子句，例如：

[HttpGet]
public async Task<List<Entity>> GetEntitiesAsync(string? property1, string? property2)
{
    var query = _context.Entities.AsNoTracking();
    if (property1 != null)
    {
        query = query.Where(e => e.Property1.Contains(property1));
    }
    if (property2 != null)
    {
        query = query.Where(e => e.Property2.Contains(property2));
    }
    return await query.ToListAsync();
}

但是，当使用 时.ExecuteUpdate，我看不到如何有条件地链接.SetProperty子句：

[HttpPatch("{id}")]
public async Task<IActionResult> UpdateEntityAsync(int id, Entity entity)
{
    var entitiesUpdated = await _context.Entities
        .Where(e => e.Id == id)
        .ExecuteUpdateAsync(s => s
            // How to conditionally chain SetProperty based …