对于C#列表,当一条记录';s值变化?
我有一个剑道网格,用户可以通过上下移动行来更改行的顺序。我通过递增或递减1来调整order字段。我现在需要对网格中的其余项目重新排序。将数据传递回控制器,我现在正尝试对列表重新排序。我觉得我很接近,但不能完全正确。有人能帮我弄清楚怎么做吗 例如: 从这个网格开始对于C#列表,当一条记录';s值变化?,c#,list,recursion,collections,kendo-grid,C#,List,Recursion,Collections,Kendo Grid,我有一个剑道网格,用户可以通过上下移动行来更改行的顺序。我通过递增或递减1来调整order字段。我现在需要对网格中的其余项目重新排序。将数据传递回控制器,我现在正尝试对列表重新排序。我觉得我很接近,但不能完全正确。有人能帮我弄清楚怎么做吗 例如: 从这个网格开始 Test | Order A | 1 B | 2 C | 3 D | 4 用户单击B行和向上箭头,因此网格现在如下所示: Test | Order B | 1 A | 1 C | 3 D
Test | Order
A | 1
B | 2
C | 3
D | 4
用户单击B行和向上箭头,因此网格现在如下所示:
Test | Order
B | 1
A | 1
C | 3
D | 4
[0] Test: B, Order: 1
[1] Test: A, Order: 1
[2] Test: C, Order: 3
[3] Test: D, Order: 4
[0] Test: B, Order: 1
[1] Test: A, Order: 2
[2] Test: C, Order: 3
[3] Test: D, Order: 4
这部分工作正常,所以我认为不需要任何代码。这是我需要帮助的地方。因此,我来到控制器,我有一个如下列表:
Test | Order
B | 1
A | 1
C | 3
D | 4
[0] Test: B, Order: 1
[1] Test: A, Order: 1
[2] Test: C, Order: 3
[3] Test: D, Order: 4
[0] Test: B, Order: 1
[1] Test: A, Order: 2
[2] Test: C, Order: 3
[3] Test: D, Order: 4
有两条记录的顺序等于1。如何对列表重新排序(以便将新的顺序保存到数据库中)
我想要的是一个如下所示的列表:
Test | Order
B | 1
A | 1
C | 3
D | 4
[0] Test: B, Order: 1
[1] Test: A, Order: 1
[2] Test: C, Order: 3
[3] Test: D, Order: 4
[0] Test: B, Order: 1
[1] Test: A, Order: 2
[2] Test: C, Order: 3
[3] Test: D, Order: 4
我提出了这个解决方案,但是递归部分工作不正常。我返回的列表是空的。有人能找到问题吗
[HttpPost]
public ActionResult UpdateComments([DataSourceRequest] DataSourceRequest request, ModelComment model)
{
List<ModelComment> comments = new List<ModelComment>();
comments.Add(model);
List<ModelComment> otherComments = data.GetCommentsByAnalysisID(model.analysisID);
List<ModelComment> changedComments = ChangeDuplicateOrders(otherComments, model.commentsSelectedID, model.order);
return Json(comments.ToDataSourceResult(request));
}
private List<ModelComment> ChangeDuplicateOrders(List<ModelComment> comments, int ID, int order)
{
List<ModelComment> changedComments = new List<ModelComment>();
foreach (ModelComment comment in comments)
{
if (comment.commentsSelectedID != ID)
{
ModelComment changedComment = comment;
if (comment.order == order)
{
changedComment.order = order + 1;
changedComments.Add(changedComment);
}
List<ModelComment> remainingComments = new List<ModelComment>();
remainingComments = comments;
remainingComments.Remove(changedComment);
List<ModelComment> processedcomments = ChangeDuplicateOrders(remainingComments, changedComment.commentsSelectedID, changedComment.order);
changedComments = (changedComments.Concat(processedcomments)).ToList();
}
}
return changedComments;
}
[HttpPost]
公共操作结果更新注释([DataSourceRequest]DataSourceRequest请求,ModelComment模型)
{
列表注释=新列表();
注释。添加(模型);
列出otherComments=data.getCommentsByAnalysId(model.analysisID);
List changedComments=ChangeDuplicateOrders(其他注释,model.comments Selected,model.order);
返回Json(comments.ToDataSourceResult(request));
}
私有列表更改重复顺序(列表注释、整数ID、整数顺序)
{
List changedComments=新列表();
foreach(注释中的ModelComment注释)
{
if(comment.commentsSelectedID!=ID)
{
ModelComment changedComment=注释;
if(comment.order==order)
{
changedComment.order=订单+1;
changedComments.Add(changedComments);
}
List remainingComments=新列表();
剩余评论=评论;
remainingComments.Remove(changedcomments);
List processedcomments=ChangeDuplicateOrders(remainingComments,ChangedComments.Comments Selected,ChangedComments.order);
changedComments=(changedComments.Concat(processedcomments)).ToList();
}
}
返回更改的注释;
}
编辑:
以下是视图,您可以看到我在客户端执行的操作:
@using (Html.BeginForm("LabApprovals_History", "Home"))
{
<div class="breadcrumb">
@Html.Raw(@ClsUtility.GetCurrentCrumb("Lab Approvals Comments"))
</div>
if (@ViewBag.Message != null && @ViewBag.Message != "")
{
<div id="divErrorMessage" style="color: #1A78C2;">
<br />
@Html.Raw(@ViewBag.Message)
</div>
<br />
<div style="clear: both">
<br />
</div>
}
<br />
<div style="text-align: center; padding-left: 10px;">
<div id="grid"></div>
@(Html.Kendo().Grid<DALubeBarcode.Models.ModelComment>().Name("gridComments")
.DataSource(dataSource => dataSource
.Ajax()
.Read(read => read.Action("ReadComments", "Home", new { analysisID = Model.analysisID }))
.Update(update => update.Action("UpdateComments", "Home"))
.Model(model => model.Id(p => p.commentsSelectedID))
)
.ToolBar(toolbar => toolbar.Save())
.Columns(columns =>
{
columns.Bound(m => m.commentsSelectedID).Visible(false);
columns.Bound(m => m.commentText).Title("Comment").Width("500px");
columns.Bound(m => m.order)
.ClientTemplate("<input type='button' class='k-button' onclick=up(\'#=uid#\') value='up' />").Title("");
columns.Bound(m => m.order)
.ClientTemplate("<input type='button' class='k-button' onclick=down(\'#=uid#\') value='down' />").Title("");
columns.Bound(m => m.order).Title("Order").Width("50px");
})
.Sortable()
.HtmlAttributes(new { style = "height:600px;" })
.Resizable(resize => resize.Columns(true))
.Editable(editable => editable.Mode(GridEditMode.InCell))
)
</div>
}
<script>
function up(uid) {
var grid = $("#gridComments").data("kendoGrid");
var dataItem = grid.dataSource.getByUid(uid);
dataItem.order = dataItem.order - 1;
var index = grid.dataSource.indexOf(dataItem);
var newIndex = Math.max(0, index - 1);
if (newIndex != index) {
grid.dataSource.remove(dataItem);
grid.dataSource.insert(newIndex, dataItem);
}
var dataSource = $("#gridComments").data("kendoGrid").dataSource;
dataSource.data()[newIndex].dirty = true;
dataSource.sync();
return false;
}
function down(uid) {
var grid = $("#gridComments").data("kendoGrid");
var dataItem = grid.dataSource.getByUid(uid);
dataItem.order = dataItem.order + 1;
var index = grid.dataSource.indexOf(dataItem);
var newIndex = Math.min(grid.dataSource.total() - 1, index + 1);
if (newIndex != index) {
grid.dataSource.remove(dataItem);
grid.dataSource.insert(newIndex, dataItem);
}
var dataSource = $("#gridComments").data("kendoGrid").dataSource;
dataSource.data()[newIndex].dirty = true;
dataSource.sync();
return false;
}
@使用(Html.BeginForm(“labu历史”、“主页”))
{
@Html.Raw(@clsutibility.getcurrentcrump(“实验室批准评论”))
如果(@ViewBag.Message!=null&&@ViewBag.Message!=“”)
{
@Html.Raw(@ViewBag.Message)
}
@(Html.Kendo().Grid().Name(“gridComments”)
.DataSource(DataSource=>DataSource
.Ajax()
.Read(Read=>Read.Action(“ReadComments”,“Home”,new{analysisID=Model.analysisID}))
.Update(Update=>Update.Action(“UpdateComments”、“Home”))
.Model(Model=>Model.Id(p=>p.commentsSelectedID))
)
.ToolBar(ToolBar=>ToolBar.Save())
.列(列=>
{
columns.Bound(m=>m.commentsSelectedID).Visible(false);
columns.Bound(m=>m.commentText).Title(“Comment”).Width(“500px”);
columns.Bound(m=>m.order)
.ClientTemplate(“”)。标题(“”);
columns.Bound(m=>m.order)
.ClientTemplate(“”)。标题(“”);
列.绑定(m=>m.order).标题(“订单”).宽度(“50px”);
})
.Sortable()
.HtmlAttributes(新的{style=“height:600px;”})
.resize可调整大小(resize=>resize.Columns(true))
.Editable(Editable=>Editable.Mode(GridEditMode.InCell))
)
}
功能启动(uid){
var grid=$(“#gridComments”).data(“kendoGrid”);
var dataItem=grid.dataSource.getByUid(uid);
dataItem.order=dataItem.order-1;
var index=grid.dataSource.indexOf(数据项);
var newIndex=Math.max(0,索引-1);
if(newIndex!=索引){
grid.dataSource.remove(dataItem);
grid.dataSource.insert(newIndex,dataItem);
}
var dataSource=$(“#gridComments”).data(“kendoGrid”).dataSource;
dataSource.data()[newIndex].dirty=true;
dataSource.sync();
返回false;
}
函数关闭(uid){
var grid=$(“#gridComments”).data(“kendoGrid”);
var dataItem=grid.dataSource.getByUid(uid);
dataItem.order=dataItem.order+1;
var index=grid.dataSource.indexOf(数据项);
var newIndex=Math.min(grid.dataSource.total()-1,index+1);
if(newIndex!=索引){
grid.dataSource.remove(dataItem);
grid.dataSource.insert(newIndex,dataItem);
}
var dataSource=$(“#gridComments”).data(“kendoGrid”).dataSource;
dataSource.data()[newIndex].dirty=true;
dataSource.sync();
返回false;
}
类似这样的方法会奏效,但我没有时间检查语法,所以请注意大写之类的:
private void reorder (myList, oldIndex, newIndex) {
ModelComment itemToMove = myList.First(x=>x.order==oldIndex);
ModelComment insertPoint = myList.First(x=>x.order==newIndex);
myList.Remove(itemToMove);
if (newIndex < oldIndex) {
myList.select(x=>x.order>=newIndex && x.order<oldIndex).foreach(x=>x.order++);
} else {
myList.select(x=>x.order<=newIndex && x.order>oldIndex).foreach(x=>x.order--);
}
itemToMove.order = newIndex;
myList.Insert(myList.IndexOf(insertPoint), itemToMove);
}
private void重新排序(myList、oldIndex、newIndex){
modelcoment itemToMove=myList.First(x=>x.order==oldIndex);
modelcoment insertPoint=myList.First(x=>x.order==newIndex);
myList.Remove(itemToMove);
如果(新索引<旧索引){
选择(x=>x.order>=newIndex&&x.orderx.order++);
}否则{
myList.select(x=>x.orderoldIndex).foreach(x=>x