dynamic

问题 HI, i want to build a datagrid which will have a dynamic height value because the number of rows will always be different. I also want to communicate the height back to the component holiding it so that it also grows with the datagrid. Can anyone help me out on the best way to create such a dynamic datagrid. Thanks 回答1: The DataGrid's height is controlled by its rowCount property. If you want your DataGrid to always be exactly high enough to show all the contained elements (and, for example,

问题 I am trying to write a method GetDynamicConstructor<T> which will return, essentially, a smart constructor for the given class. It will accept an array of strings as parameters and parse them as the appropriate type (given existing constructor data). public void Init() { DynamicConstructor<MyClass> ctor = GetDynamicConstructor<MyClass>(); MyClass instance = ctor(new string[] { "123", "abc" }); // parse "123" as int } public delegate T DynamicConstructor<T>(string[] args); public

问题 (update) ICustomTypeDescriptor works for my Windows Forms app, but not for Silverlight; Not supported. I will keep investigating this idea though and see where i get to. (/update) I have, say a few switch panels (for those that like analogies). Each of these switch panels has switches that have a Name(string) can be in state(bool) of On or Off. The switchpanel and switches are objects that have INotify interface on them. Using the switches Names, I create a list of all possible switch names

问题 Let's assume that we have this class: public class Person { public int Id { get; set; } public string Name { get; set; } } Now, is it possible in C# to intercept call to property get method, run some other method and return result of that method instead of property value? I'd like to be able to do some additional logic behind the scene. The downside is that this class can't be changed (on C# level). Maybe some IL ? 回答1: The .NET SDK has what you need already. You can round-trip most anything

问题 I want to define an array variable to have a variable number of elements depending on the m number of results returned from a search. I get an error "Constant Expression Required" on: Dim cmodels(0 To m) As String Here is my complete code Dim foundRange As Range Dim rangeToSearch As Range Set rangeToSearch = Selection Set foundRange = rangeToSearch.Find(What:="Lights", After:=ActiveCell, LookIn:=xlValues, LookAt:= _ xlPart, SearchOrder:=xlByRows, SearchDirection:=xlNext, MatchCase:=False _ ,

问题 I have a form which starts out with 2 text inputs. The standard scenario is the user enters a number in one field and his/her name in the other and then the page will be updated (not reloaded). But in some cases the user may want to enter several numbers which are connected to the same name and the way this will be implemented is by the user clicking an "add another" link next to the text box. When the user clicks the "add another" link, the value from the textbox needs to be inserted into a

问题 i'm using a UITableView, list elements from web service.. what i need to do is first call 20 elements from web service and display in list, when the user scroll down call another 20 records from webservice and add to tableview.. how to do this? 回答1: You can load your 20 items from your web service and store them into an array. Then, create a table view and display those 20 items. If you want the scrolling action to trigger the loading then just become the delegate of the UIScrollView of the

问题 I want to make new CSS rules on the client, for doing CSS transitions for example. Apparently jQuery has this kind of thing, but what about in the world of Clojurescript ? I found Gaka and Garden for generating CSS on the server side like Hiccup, but what if I want to do dynamic CSS on the client side ? Does Enlive, Dommy or any of those Clojurescript libs do that ? 回答1: Take a look at jayq You can do CSS manipulation to a DOM element via simple built in css wrapper and a Clojure map: (ns

问题 I have a grid in witch a user can fill-in the "filter" on a collection. The user has to fill-in some columns: AndOr Property Comparator Value say, for a Cities collection it could filter cities that - Name StartsWith 'a' AND Population > 10000 OR Population < 1000 I used the dynamic PredicateBuilder, that worked very well, until the "brackets" requirement appeared. As you can see from the "query" above, in the resulting collection we will have cities which (Name.StartsWith'a' AND Population >

问题 In my code, I am trying to create a dynamic array with initArray function, and in main I would like to use this initialized array. However, whenever i called the initialized array in main, it is giving me an error. Here is what i tried: void main() { int *a = NULL; int n; cout<<"Enter size:"; cin>>n; initArray(a,n); for(int j=0;j<n;j++) { cout<<a[j]<<endl;//Crashes here } } void initArray(int *A, int size) { srand((unsigned)time(0)); A = new int[size]; for(int i=0;i<size;i++) { A[i] = rand()