这是用户控件的代码我有一个具有数据值属性(data-camera-mac
和data-checked
)的转发器。这些值将在C#端填充:
repeaterCameras.DataSource = variableName;
repeaterCameras.DataBind();
我有一个点击式C#方法,可以很好地读取Repeater中的Items(方法btnSave_Changes
)。然后我添加了一些操作和移动HTML的JavaScript。 JavaScript工作正常并按预期操作前端。 JavaScript还会更改数据值属性。但是,当点击事件发生时(btnSave_Changes
),它会在Repeater中打印原始项目集,就好像JavaScript没有发生任何变化一样。
HTML:
<asp:Repeater ID="repeaterCameras" runat="server" >
<ItemTemplate>
<div class="<%# (bool)Eval("Checked") ? "row-fluid camera-row highlight-row highlight_selected_row" : "row-fluid camera-row highlight-row" %>"
data-camera-mac=<%# Eval("Mac") %> >
<div class="highlight-bar"></div>
<div id="divArrows" class="arrow-column camera-column-padding"
runat="server" visible="true" data-checked=<%# Eval("Checked")%>
data-camera-mac=<%# Eval("Mac") %> >
<span id="spArrows" >
<i id="upArrow" class="icon-arrow-up icon-large"
style="cursor:pointer;" onclick="upArrowClick(this)" ></i>
<i id="downArrow" class="icon-arrow-down icon-large"
style="cursor:pointer;" onclick="downArrowClick(this)" ></i>
</span>
</div>
<div class="check-box-column camera-column-padding">
<span id="spCheckBox" runat="server">
<i id="cameraSelectCheckBox"
class="<%# (bool)Eval("Checked") ? "icon-ok icon-large" : "icon-check-empty icon-large" %>"
style="cursor:pointer;" onclick="clickCheckBox(this)"
data-camera-mac=<%# Eval("Mac") %> ></i>
</span>
</div>
</div>
</ItemTemplate>
</asp:Repeater>
JavaScript的:
function clickCheckBox(element) {
var notHighlight = "row-fluid camera-row highlight-row";
var highlight = "row-fluid camera-row highlight-row highlight_selected_row";
if (element.className == "icon-check-empty icon-large"){
element.className = "icon-ok icon-large";
highlightRow(element.getAttribute("data-camera-mac"));
}else if(element.className == "icon-ok icon-large"){
element.className = "icon-check-empty icon-large";
unHighlightRow(element.getAttribute("data-camera-mac"));
} else {
alert("Problem: " + element.className);//TODO: log error
}
}
function highlightRow(mac){
var currentClass = "row-fluid camera-row highlight-row";
var newClass = "row-fluid camera-row highlight-row highlight_selected_row";
var rowsList = document.getElementsByClassName(currentClass);
for(var i = 0; i < rowsList.length; i++){
if (rowsList[i].getAttribute("data-camera-mac") == mac) {
var tempElem = rowsList[i].getElementsByClassName("arrow-column camera-column-padding")[0];
tempElem.style.visibility = 'visible';
tempElem.setAttribute("data-checked", "true");
rowsList[i].className = newClass;
break;
}
}
}
function unHighlightRow(mac){
var newClass = "row-fluid camera-row highlight-row";
var currentClass = "row-fluid camera-row highlight-row highlight_selected_row";
var rowsList = document.getElementsByClassName(currentClass);
for(var i = 0; i < rowsList.length; i++){
if (rowsList[i].getAttribute("data-camera-mac") == mac) {
var tempElem = rowsList[i].getElementsByClassName("arrow-column camera-column-padding")[0];
tempElem.style.visibility = 'hidden';
tempElem.setAttribute("data-checked", "false");
rowsList[i].className = newClass;
break;
}
}
}
function upArrowClick(element) {
var current = element.parentNode.parentNode.parentNode;
var previous = findPrevious(current);
if (previous) {
current.parentNode.insertBefore(current, previous);
}
}
function findPrevious(element) {
do {
element = element.previousSibling;
} while (element && element.nodeType != 1);
return element;
}
function downArrowClick(element) {
var current = element.parentNode.parentNode.parentNode;
var next = findNext(current);
if (next) {
current.parentNode.insertBefore(next, current);
}
}
function findNext(element) {
do {
element = element.nextSibling;
} while (element && element.nodeType != 1);
return element;
}
C#:
protected void btnSave_Changes(object sender, EventArgs e)
{
System.Diagnostics.Debug.WriteLine("btnSave_Changes");
if (repeaterCameras == null || repeaterCameras.Items == null || repeaterCameras.Items.Count == 0)
return;
System.Diagnostics.Debug.WriteLine("repeaterCameras.Items.Count = " + repeaterCameras.Items.Count);
for (int i = 0; i < repeaterCameras.Items.Count; i++)
{
System.Diagnostics.Debug.WriteLine("i = " + i);
HtmlGenericControl div = repeaterCameras.Items[i].FindControl("divArrows") as HtmlGenericControl;
string macStr = div.Attributes["data-camera-mac"].ToString();
string checkedStr = div.Attributes["data-checked"].ToString();
System.Diagnostics.Debug.WriteLine("data-camera-mac = " + macStr + ", data-checked = " + checkedStr);
}
}
答案 0 :(得分:1)
问题不在于对转发器的客户端表示进行排序,而是在数据源中对项目进行了无意义的排序;
这是一个简单转发器的视图状态:
/wEPDwULLTEwNjkxNzU2MzgPZBYCAgEPZBYCAgEPFgIeC18hSXRlbUNvdW50AgUWCgIBD2QWAmYPFQQQRW1waXJlIEJ1cmxlc3F1ZQlCb2IgRHlsYW4IQ29sdW1iaWEFMTAuOTBkAgIPZBYCZg8VBA9IaWRlIHlvdXIgaGVhcnQMQm9ubmllIFR5bGVyC0NCUyBSZWNvcmRzBDkuOTBkAgMPZBYCZg8VBA1HcmVhdGVzdCBIaXRzDERvbGx5IFBhcnRvbgNSQ0EEOS45MGQCBA9kFgJmDxUEE1N0aWxsIGdvdCB0aGUgYmx1ZXMKR2FyeSBNb29yZQ5WaXJnaW4gcmVjb3JkcwUxMC4yMGQCBQ9kFgJmDxUEBEVyb3MPRXJvcyBSYW1henpvdHRpA0JNRwQ5LjkwZGSThjyUMF+lfuzF5an9+yGiqSdlTXMozV4JAAW5zYmwsg==
尝试在this
等在线视图状态查看器中解析它输入:
输出将是:
因此,在客户端操作之后,数据源的状态将是未经过修改的,最简单的解决方案可以是为您的数据项添加一个order属性并更改客户端的值。