Asp.net mvc 加速页面加载和信息处理
在我的web应用程序中，我正在加载一个页面，它可以在一个表中加载多达8000行或更多行，每行都有自己的dropdownlist。第一个过程被证明是非常低效的，但我被要求这样做。加载行的代码如下所示：Asp.net mvc 加速页面加载和信息处理,asp.net-mvc,linq-to-sql,Asp.net Mvc,Linq To Sql,在我的web应用程序中，我正在加载一个页面，它可以在一个表中加载多达8000行或更多行，每行都有自己的dropdownlist。第一个过程被证明是非常低效的，但我被要求这样做。加载行的代码如下所示： <tbody> <% var i = 0; foreach (var row in Model) { var comp = "ok"; if (
<tbody>
<% var i = 0;
foreach (var row in Model)
{
var comp = "ok";
if (row.LidExpected != (string.IsNullOrEmpty(row.LidObtained) ? null : row.LidObtained) || row.QuantityExpected != row.QuantityObtained)
{
comp = "ko";
}
%>
<tr class="child_row <%= comp %>">
<input type="hidden" name="Goods.index" value="<%= i %>" />
<td class="field <%= InventoryGoods.Metadata.Gid.CssClass %>">
<%-- <%= Html.Encode(row.Gid) %>--%>
<%--http://tecnicos.urbanos.com/Goods/Details/... --%>
<%= Html.ActionLink(row.Gid, "Details", "Goods", new {id = row.Gid}, null) %>
<%= Html.Hidden(String.Format("Record[{0}].Gid", i), row.Gid) %>
</td>
<td class="field <%= InventoryGoods.Metadata.LidExpected.CssClass %>">
<%= Html.Encode(row.LidExpected) %>
<%= Html.Hidden(string.Format("Record[{0}].LidExpected", i), row.LidExpected)%>
</td>
<td class="fieldRight <%= InventoryGoods.Metadata.QuantityExpected.CssClass %>">
<%= Html.Encode(row.QuantityExpected) %>
<%= Html.Hidden(string.Format("Record[{0}].QuantityExpected", i), row.QuantityExpected)%>
</td>
<td class="field <%= InventoryGoods.Metadata.LidObtained.CssClass %>">
<%= Html.Encode(row.LidObtained) %>
<%= Html.Hidden(string.Format("Record[{0}].LidObtained", i), row.LidObtained)%>
</td>
<td class="fieldRight <%= InventoryGoods.Metadata.QuantityObtained.CssClass %>">
<%= Html.Encode(row.QuantityObtained) %>
<%= Html.Hidden(string.Format("Record[{0}].QuantityObtained", i), row.QuantityObtained)%>
</td>
<%if (int.Parse(state.ToString()) == (int)InventoryStateEnum.Closed || int.Parse(state.ToString()) == (int)InventoryStateEnum.Verified)
{ %>
<td class="field <%= InventoryGoods.Metadata.Action.CssClass %>">
<%
switch (row.Action)
{
case (int)InventoryGoodsActionEnum.AdjustQuantity: %>
<%= Html.DropDownList(String.Format("Record[{0}].Action", i), new[]
{
new SelectListItem { Text= "Ajustar Quantidade", Value= ((int)InventoryGoodsActionEnum.AdjustQuantity).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustQuantity == row.Action ? true : false},
new SelectListItem { Text= "Ignorar", Value= ((int)InventoryGoodsActionEnum.Ignore).ToString(), Selected= (int)InventoryGoodsActionEnum.Ignore == row.Action ? true : false},
})%>
<% break;
case (int)InventoryGoodsActionEnum.AdjustLocation: %>
<%= Html.DropDownList(String.Format("Record[{0}].Action", i), new[]
{
new SelectListItem { Text= "Relocalizar", Value= ((int)InventoryGoodsActionEnum.AdjustLocation).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustLocation == row.Action ? true : false},
new SelectListItem { Text= "Ignorar", Value= ((int)InventoryGoodsActionEnum.Ignore).ToString(), Selected= (int)InventoryGoodsActionEnum.Ignore == row.Action ? true : false},
})%>
<% break;
case (int)InventoryGoodsActionEnum.AdjustStockType: %>
<%= Html.DropDownList(String.Format("Record[{0}].Action", i), new[]
{
new SelectListItem { Text= "Ajustar Tipo de Stock", Value = ((int)InventoryGoodsActionEnum.AdjustStockType).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustStockType == row.Action ? true : false},
new SelectListItem { Text= "Ignorar", Value= ((int)InventoryGoodsActionEnum.Ignore).ToString(), Selected= (int)InventoryGoodsActionEnum.Ignore == row.Action ? true : false},
})%>
<% break;
case (int)InventoryGoodsActionEnum.AdjustQuantityLocation: %>
<%= Html.DropDownList(String.Format("Record[{0}].Action", i), new[]
{
new SelectListItem { Text= "Ajustar Quantidade", Value= ((int)InventoryGoodsActionEnum.AdjustQuantity).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustQuantity == row.Action ? true : false},
new SelectListItem { Text= "Relocalizar", Value= ((int)InventoryGoodsActionEnum.AdjustLocation).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustLocation == row.Action ? true : false},
new SelectListItem { Text= "Ajustar Quantidade e Relocalizar", Value= ((int)InventoryGoodsActionEnum.AdjustQuantityLocation).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustQuantityLocation == row.Action ? true : false},
new SelectListItem { Text= "Ignorar", Value= ((int)InventoryGoodsActionEnum.Ignore).ToString(), Selected= (int)InventoryGoodsActionEnum.Ignore == row.Action ? true : false},
})%>
<% break;
case (int)InventoryGoodsActionEnum.AdjustQuantityStockType: %>
<%= Html.DropDownList(String.Format("Record[{0}].Action", i), new[]
{
new SelectListItem { Text= "Ajustar Quantidade", Value= ((int)InventoryGoodsActionEnum.AdjustQuantity).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustQuantity == row.Action ? true : false},
new SelectListItem { Text= "Ajustar Tipo de Stock", Value = ((int)InventoryGoodsActionEnum.AdjustStockType).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustStockType == row.Action ? true : false},
new SelectListItem { Text= "Ajustar Quantidade e Tipo de Stock", Value = ((int)InventoryGoodsActionEnum.AdjustQuantityStockType).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustQuantityStockType == row.Action ? true : false},
new SelectListItem { Text= "Ignorar", Value= ((int)InventoryGoodsActionEnum.Ignore).ToString(), Selected= (int)InventoryGoodsActionEnum.Ignore == row.Action ? true : false},
})%>
<% break;
case (int)InventoryGoodsActionEnum.AdjustLocationStockType: %>
<%= Html.DropDownList(String.Format("Record[{0}].Action", i), new[]
{
new SelectListItem { Text= "Relocalizar", Value= ((int)InventoryGoodsActionEnum.AdjustLocation).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustLocation == row.Action ? true : false},
new SelectListItem { Text= "Ajustar Tipo de Stock", Value = ((int)InventoryGoodsActionEnum.AdjustStockType).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustStockType == row.Action ? true : false},
new SelectListItem { Text= "Ajustar Tipo de Stock e Relocalizar", Value = ((int)InventoryGoodsActionEnum.AdjustLocationStockType).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustLocationStockType == row.Action ? true : false},
new SelectListItem { Text= "Ignorar", Value= ((int)InventoryGoodsActionEnum.Ignore).ToString(), Selected= (int)InventoryGoodsActionEnum.Ignore == row.Action ? true : false},
})%>
<% break;
case (int)InventoryGoodsActionEnum.AdjustQuantityLocationStockType: %>
<%= Html.DropDownList(String.Format("Record[{0}].Action", i), new[]
{
new SelectListItem { Text= "Ajustar Quantidade", Value= ((int)InventoryGoodsActionEnum.AdjustQuantity).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustQuantity == row.Action ? true : false},
new SelectListItem { Text= "Relocalizar", Value= ((int)InventoryGoodsActionEnum.AdjustLocation).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustLocation == row.Action ? true : false},
new SelectListItem { Text= "Ajustar Quantidade e Relocalizar", Value= ((int)InventoryGoodsActionEnum.AdjustQuantityLocation).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustQuantityLocation == row.Action ? true : false},
new SelectListItem { Text= "Ajustar Tipo de Stock", Value = ((int)InventoryGoodsActionEnum.AdjustStockType).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustStockType == row.Action ? true : false},
new SelectListItem { Text= "Ajustar Quantidade e Tipo de Stock", Value = ((int)InventoryGoodsActionEnum.AdjustQuantityStockType).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustQuantityStockType == row.Action ? true : false},
new SelectListItem { Text= "Ajustar Tipo de Stock e Relocalizar", Value = ((int)InventoryGoodsActionEnum.AdjustLocationStockType).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustLocationStockType == row.Action ? true : false},
new SelectListItem { Text= "Ajustar Quantidade, Tipo de Stock e Relocalizar", Value = ((int)InventoryGoodsActionEnum.AdjustQuantityLocationStockType).ToString(), Selected= (int)InventoryGoodsActionEnum.AdjustQuantityLocationStockType == row.Action ? true : false},
new SelectListItem { Text= "Ignorar", Value= ((int)InventoryGoodsActionEnum.Ignore).ToString(), Selected= (int)InventoryGoodsActionEnum.Ignore == row.Action ? true : false},
})%>
<% break;
}
%>
<%= Html.Hidden(string.Format("db_Action[{0}]", i), row.Action)%>
</td>
<td>
<a title="Apagar Evento" id="delete_Event" class="ui-widget ui-state-default ui-icon ui-icon-trash">
</a>
</td>
<td class="field <%= InventoryGoods.Metadata.ActionOn.CssClass %>" id="dateCell">
<span id="ActionOn_<%= i %>">
<%= Html.Encode(row.ActionOn.HasValue ? Html.FormatDateTime(row.ActionOn.Value) : Html.Encode(""))%></span>
<%= Html.Hidden(String.Format("Record[{0}].ActionOn", i), row.ActionOn.HasValue ? row.ActionOn.Value : new DateTime())%>
</td>
<% } %>
<%= Html.Hidden("lineVal", i) %>
<% i++;
} %>
</tr>
</tbody>
public void UpdateInventoryGoods(List<InventoryGoods> list, int id)
{
//int index = 0;
var query = from inventoryGoods in context.InventoryGoods
where inventoryGoods.ParentId == id
select inventoryGoods;
List<InventoryGoods> goodsList = query.ToList();
var memmoryInventoryGoodsEvent = context.InventoryGoodsEvents.ToList();//obter apenas o do Id
using (var scope = new TransactionScope())
{
var events = from g in context.GoodsEvent
select g;
List<GoodsEvent> goodsEventList = events.ToList();
foreach (InventoryGoods i in list)
{
foreach (InventoryGoods e in goodsList)
{
//if (index == 30)
//{
// index = 0;
// context.SubmitChanges();
//}
var eventId = getEventId(e.Id, memmoryInventoryGoodsEvent);
if (e.Gid == i.Gid && !eventId.HasValue && !e.ActionOn.HasValue)
{
e.Action = i.Action;
}
else if ((e.Gid == i.Gid && eventId.HasValue) && (e.Action != i.Action || i.ActionOn == DateTime.MinValue))
{
e.Action = i.Action;
e.ActionOn = null;
var inventoryGoodsEventsList = memmoryInventoryGoodsEvent.Where(x => x.InventoryGood == e.Id);
foreach (InventoryGoodsEvents goodsEvent in inventoryGoodsEventsList)
{
context.InventoryGoodsEvents.DeleteOnSubmit(goodsEvent);
foreach (GoodsEvent ge in goodsEventList)
{
if (ge.Id == goodsEvent.EventId)
{
ge.IsDeleted = true;
ge.DeletedOn = DateTime.Now;
ge.DeletedBy = System.Web.HttpContext.Current.User.Identity.Name;
}
}
}
}
//++index;
}
}
context.SubmitChanges();
scope.Complete();
}
}
public int? getEventId(int InventoryGood,List<InventoryGoodsEvents> memmoryList)
{
//var firstinventoryGoodsEvents = context.InventoryGoodsEvents.Where(i => i.InventoryGood == InventoryGood).FirstOrDefault();
var firstinventoryGoodsEvents = memmoryList.Where(i => i.InventoryGood == InventoryGood).FirstOrDefault();
if (firstinventoryGoodsEvents != null && firstinventoryGoodsEvents.InventoryGood > 0)
{
return firstinventoryGoodsEvents.InventoryGood;
}
else
{
return null;
}
}
public void UpdateInventoryGoods(List<InventoryGoods> list, int id)
{
//int index = 0;
var query = from inventoryGoods in context.InventoryGoods
where inventoryGoods.ParentId == id
select inventoryGoods;
Dictionary<string, InventoryGoods> goodsDictionary = query.ToDictionary(p => p.Gid);
var memmoryInventoryGoodsEvent = (from c in context.InventoryGoodsEvents
join a in context.InventoryGoods on c.InventoryGood equals a.Id
where a.ParentId == id
select c).ToList();//obter apenas o do Id
using (var scope = new TransactionScope())
{
var events = from g in context.GoodsEvent
select g;
Dictionary<int, GoodsEvent> goodsEventDictionary = events.ToDictionary(p => p.Id);
//List<GoodsEvent> goodsEventList = events.ToList();
foreach (InventoryGoods i in list)
{
var eventId = getEventId(i.Id, memmoryInventoryGoodsEvent);
var objectToUpdate = goodsDictionary[i.Gid];
if (!eventId.HasValue && !objectToUpdate.ActionOn.HasValue)
{
objectToUpdate.ActionOn = i.ActionOn;
continue;
}
else if (eventId.HasValue && objectToUpdate.Action != i.Action || i.ActionOn == DateTime.MinValue)
{
objectToUpdate.Action = i.Action;
objectToUpdate.ActionOn = null;
var inventoryGoodsEventsList = memmoryInventoryGoodsEvent.Where(x => x.InventoryGood == objectToUpdate.Id);
foreach (InventoryGoodsEvents goodsEvent in inventoryGoodsEventsList)
{
context.InventoryGoodsEvents.DeleteOnSubmit(goodsEvent);
var eventToUpdate = goodsEventDictionary[goodsEvent.EventId];
eventToUpdate.IsDeleted = true;
eventToUpdate.DeletedOn = DateTime.Now;
eventToUpdate.DeletedBy = System.Web.HttpContext.Current.User.Identity.Name;
}
}
}
context.SubmitChanges();
scope.Complete();
}
}
翻开你的单子。无论如何，没有人能够一次处理8000行。页面显示您的列表，提供过滤器帮助您的用户查找内容，这样您将大大减少任何一种方式发送的数据量。8000行？您应该放弃这种想法，实现某种分页。无论应用程序是什么，向用户显示8000行都是无用的。我使用的是具有分页功能的 不要这样做。没有浏览器会喜欢呈现这么多信息，即使您可以让服务器快速发送。任何显示这么多行的浏览器在客户端上运行速度都会非常慢，滚动会很快，而且通常无法使用 我建议要么对信息进行分页，要么更好地过滤信息，只显示用户感兴趣的内容，任何用户都不可能一次对这么多数据感兴趣 有两种选择： 说服客户分页是必要的，否则性能会受到影响。向他展示其他知名网站是如何做到这一点的。 使用AJAX。只加载屏幕上可以看到的内容，选择一个，当用户滚动时，用AJAX加载缺少的部分。有点像。你也可以尝试一些来避免沉重的负担。
无论您选择什么选项，都可以通过使用helpers来修复视图当前表示的标记。一个可能有帮助的选项是，对于每种类型的下拉列表，您仅以json格式在页面上呈现一次下拉列表的数据项。然后使用javascript在客户机上创建并填充所有select ddl。它将为渲染的每一行保存所有多余的冗余数据传输。您只需存储在生成select时将在每行中选择的值。这只是一个我没有尝试过的想法，这可能会导致客户端也在等待javascript完成它的工作
另外，为了更新数据，是否可以使用ajax并在更改发生时调用每个正确更改的下拉列表？我遇到的第一个问题是，缓慢的代码在哪里 在服务器处理时间、网络传输时间还是在浏览器中渲染时间
在某些情况下，IE甚至IE8上的大型HTML表速度太慢。使用CSS表格布局：修复此问题可能会有所帮助。最重要的是，为列表添加页面。也许我也会考虑分页。我很乐意把信息放在页面上，但我做不到，因为那是我的命令。必须一次显示所有信息。。。我知道这是不可取的，但我需要至少让这个过程少一点痛苦…祝你好运。当DOM元素太多时，浏览器会开始呕吐。仅仅因为管理层要求它并不意味着它是可行的。没错。。。但不管我说什么，这些都是要求，我只能遵守。不管你们能说些什么，我都很感激。即使你只是在double foreach上帮忙…@Hallaghan-如果是这样的话，那么就按原样给他们，告诉他们你遇到了性能问题，因为他们需要大量的信息。。。正如老话所说，‘你不能给我的猪涂口红’，他们只是要求我再一次提高性能。这种双重foreach迭代可以改进吗？这是不可能的，因为只有当用户单击Save按钮时，更改才会确定。