I have a list which contains a dictionary of ExpandoObjects. Im binding this to a grid but now I want to sort the list.
var rows = new List<dynamic>();
for (int i = 0; i < 1000; i++)
{
dynamic expandy = new ExpandoObject();
var dictionary = (IDictionary<string, object>)expandy;
dictionary.Add("ID", i);
dictionary.Add("Name", "Name" + i);
rows.Add(dictionary);
}
So looking at the test code above how would I sort rows (ascending or decending) say on "ID" or "Name" or any other property that I dynamically add?
A bit more info, I'm looking to sort it like this (this doesnt work);
var newOrder = from r in rows
orderby ("Name") ascending
select r;
Not sure how I missed this but anyway this works,
var newOrder = rows.OrderByDescending(x => x["Name"]);
WooHoo's answer does not work for Dynamic.ExpandoObject; this works:
var newOrder = rows.OrderByDescending(x =>((IDictionary<string,object>)x)["Name"]);
Related
In my situation, one of the query with params needs to be looped through based on the length of request object.
string Query = QM.FindQuery("12");
int paramCnt = Count * 2;
SqlParameter[] sqlParam = new SqlParameter[1 + paramCnt];
sqlParam[0] = new SqlParameter("#NUMBER", SqlDbType.Char);
sqlParam[0].Value = Convert.ToString(StudRequest.STUDNUMBER);
Queries.Append(Query);
for (int Index = 0; Index < Count; Index++)
{
Query = QM.FindQuery("2");
//Param1
//Param2
Queries.Append(Query);
}
Queries.AppendLine("END");
DM.ExecuteNonQuery(Queries.ToString(), sqlParam);
Now in above case, how to handle Param1 & Param2. Or any other alternative way to handle the query with SQLparams
Im trying to get all the data rows that contain a certain set of data.
In my database i have some values, including start and length.
I have an array that contains integers called startTimes and another called endTimes.
I need a where clause that would return the records that have a start value contained in startTimes, OR start+length contained in endTimes.
Is there any way to do this?
Thanks
IQueryable<request> proposedRequest = db.requests.Include(r => r.rooms);
proposedRequest = proposedRequest.Where(r=>r.booked.Equals(1));
proposedRequest = proposedRequest.Where(r=>r.roundID.Equals(roundID))8;
proposedRequest = proposedRequest.Where(r=>r.day.Equals(day));
int[] startTimes;
int[] endTimes;
for(var q=0;q<time;q++){
startTimes[startTimes.Length] = time + q;
endTimes[endTimes.Length] = time + q + 1;
}
proposedRequest = proposedRequest.Where(//what goes in here);
i have an array startTime=[1,3,4] and an array endTime=[2,4,5] lets
say. I need to see if any of those values match my records? I dont
think the above would do the job
To check if you have value in Array of int, Use the Contains Method:
proposedRequest = proposedRequest.Where(s => startTimes.Contains(s.INT_ID)
|| endTimes.Contains(s.INT_ID));
Syntax: ARRAY.Contains(ID_TO_SEARCH)
it returns a boolean:
var list = new List<int> {1,2,3,4,5};
var intVar = 4;
var exists = list.Contains(intVar);
will something like this suffice?
var data = collection.Where(
t => startTimes.Contains(t.theTime) ||
endTimes.Contains(t.theTime + theLength));
proposedRequest.Where(pr => startTimesArray.Contains(pr.start) || endTimesArray.Contains(pr.start + pr.length));
I'm currently trying to find out how to set items to be selected on a list in ST2.
I've found the following:
l.select(0, true);
l.select(1, true);
which would select the first 2 items on my list. But the data coming from the server is in csv format string with the ids of the items in the list to be selected.
e.g. "4, 10, 15"
So I currently have this code at the moment.
doSetSelectedValues = function(values, scope) {
var l = scope.getComponent("mylist");
var toSet = values.split(",");
// loop through items in list
// if item in list has 'id' property matching whatever is in the toSet array then select it.
}
The problem is I can't seem to find a way of iterating over the items in the list and then inspect the "id" property of the item to see if it matches with the item in the array.
l.getItems()
Doesn't seem to return an array of items. The list is populated via a store with the "id" & "itemdesc" properties. I just want to be able to select those items from a csv string. I've scoured the Api on this and I can't seem to find a way of iterating over the items in the list and being able to inspect its backing data.
the Ext.List's items are not the items you are looking for. The items under the Ext.List object are those:
Ext.create('Ext.List', {
fullscreen: true,
itemTpl: '{title}',
store: theStore,
**items: [item1, item2]**
});
Granted, usually an Ext.List doesn't have items like these. What you are looking for are the Ext.Store items. The Ext.Store items are the exact same items in the same order as presented in the Ext.List.
To iterate over those, and select the corresponding items in the list, do the following:
var s = l.getStore();
var itemIndicesToSelect = [];
for (var i = 0 ; i < s.data.items.length ; i++){
if (arrayContainsValue(toSet, s.data.items[i].data.id)){
itemIndicesToSelect.push(i);
}
}
for (var i = 0 ; i < itemIndicesToSelect.length ; i++){
l.selectRange(itemIndicesToSelect[i], itemIndicesToSelect[i], true);
}
You would have to implement the function arrayContainsValue (one possible solution).
doSetSelectedValues = function(values, scope) {
var l = scope.getComponent("mylist"),
store = l.getStore(),
toSet = values.split(",");
Ext.each(toSet, function(id){
l.select(store.getById(id), true);
});
}
First, you have to know that I am developing my project with Struts (J2EE
Here is my problem :
I have 2 dijit.form.Select widgets in my page, and those Select are filled with the same list (returned by a Java class).
When I select an option in my 1st "Select widget", I would like to update my 2nd Select widget, and disable the selected options from my 1st widget (to prevent users to select the same item twice).
I succeed doing this (I'll show you my code later), but my problem is that when I open my 2nd list, even once, it will never be refreshed again. So I can play a long time with my 1st Select, and choose many other options, the only option disabled in my 2nd list is the first I've selected.
Here is my JS Code :
function removeSelectedOption(){
var list1 = dijit.byId("codeModif1");
var list2 = dijit.byId("codeModif2");
var list1SelectedOptionValue = list1.get("value");
if(list1SelectedOptionValue!= null){
list2.reset();
for(var i = 0; i < myListSize; i++){
// If the value of the current option = my selected option from list1
if(liste2.getOptions(i).value == list1SelectedOptionValue){
list2.getOptions(i).disabled = true;
} else {
list2.getOptions(i).disabled = false;
}
}
}
Thanks for your help
Regards
I think you have to reset() the Select after you've updated its options' properties. Something like:
function removeSelectedOption(value)
{
var list2 = dijit.byId("codeModif2"),
prev = list2.get('value');
for(var i = 0; i < myListSize; i++)
{
var opt = myList[i];
opt.disabled = opt.value === value;
list2.updateOption(opt);
}
list2.reset();
// Set selection again, unless it was the newly disabled one.
if(prev !== value) list2.set('value', prev);
};
(I'm assuming you have a myList containing the possible options here, and the accompanying myListSize.)
Is there a function that allows me to determine the number of keys in an ActionScript 2 associative array without iterating over that array?
// ascertain the length/size of an associative array
var o:Object = new Object();
o["k1"] = "v1";
o["k2"] = "v2";
o["k3"] = "v3";
I'd expect there to be an "o.size" or "o.length" that would return 3.
Thanks.
var o:Object = new Object();
o["k1"] = "v1";
o["k2"] = "v2";
o["k3"] = "v3";
var len:Number = 0;
for( i in o ) len++;
trace( len );
Sorry, there's no length/size for an Object, iteration is your only choice. AS3 has better options for this with the Dictionary class.