private void ValidateTake(ref SkipTakeModel model, int howManyTake)
{
if (model.Take == 0)
{
model.Take = howManyTake;
}
}
/// <summary>
/// 根据总数，每页数，和当前第几页，算出应该skip多少条，超出最大页数之后，返回最后一页面数据
/// </summary>
/// <param name="allcount">信息总数</param>
/// <param name="pagesize">每页条数</param>
/// <param name="pageindex">当前页</param>
/// <returns></returns>
public static SkipTakeModel GetSkipShowFinalPage(int allcount, int pagesize, int pageindex)
{
SkipTakeModel model = new SkipTakeModel();
if (pageindex > 0)
{
int maxpage = allcount / pagesize;
if (allcount % pagesize > 0)
{
maxpage++;
}
pageindex = Math.Min(maxpage, pageindex);
var max = Math.Max(0, pagesize * (pageindex - 1));
model.Skip = max;
model.Take = pagesize;
model.MaxPage = maxpage;
}
else
{
model.Skip = 0;
model.Take = pagesize;
model.MaxPage = 1;
}
return(model);
}
public async Task <IActionResult> GetLastCoinsValues([FromBody] SkipTakeModel skipTake)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
ValidateTake(ref skipTake, 10);
try
{
var getLatestCoinsValue = await this.coinService.TakeAndSkipLatestCoinsValue(skipTake.Skip, skipTake.Take);
return(Ok(getLatestCoinsValue));
}
catch (Exception ex)
{
return(BadRequest(ex.Message));
}
}