I often use select lists with my projects but when it comes to a huge select list, I couldn't find a solution. I need a easy, plug and play solution for solution will be used in a few places.
When you have a select box or text box to be filled from a model data, I want to show user a text box, right side of text box, there should be a button to choice the value. Upon clicking that button, popup or a modal will be opened and I filter all the records and find my value, upon clicking value, modal or popup closes and I get choosen value to form control.
İmagine you have a text box to choose your customer, and among 2500 customer,
PS:don't suggest autocomplete, don't want to accomplish it.
Why don't you look at something like Chozen plugin http://harvesthq.github.io/chosen/. It allows you to easily search large select lists
Related
I couldn't think of a coherent search term for my problem so please forgive me if this has been asked before.
I have 24 combo boxes sitting on a panel control, displayed in 4 rows of 6.
After the user defines the value for each combo and hits the "go" button, I add all combo boxes to list so I can use the values in another section of my program.
The problem is that the order the comboboxes are added to the list is messed up, compared to their visual layout on the panel, and I would like to define the order. Currently, it adds the 9th combobox to the list first then the 20th, 2nd, 16th etc etc.
I tried TabIndex but that didnt work.
Before I manually rename and relabel all of the boxes, any other suggestions will be gratefully received.
The controls of your form exist in Controls collection of the container controls, for example when you add a Panel and a Button to a Form and two ComboBox to the Panel, then:
Form.Controls contains button1 and panel1
Panel.Controls contains comboBox1 and comboBox2
Controls are added to the Controls collection, with the same order that you add them to designer. Open designer.cs, look at the end of InitializeComponent to see the order.
You can also see/change the order using Document Outline window.
That said, now it should be obvious that panel1.Controls.OfType<ComboBox>() returns combo boxes with the same order that you see in Document Outline (or based on their z-index, and it doesn't have anything to do with their x/y placements).
You may want to order them based on TabIndex, or any other property that you like:
panel1.Controls.OfType<ComboBox>().OrderBy(x=>x.TabIndex)
Note
In general, if you are going to use those values for a search, instead of relying on the order of values, a much better idea is creating a SearchModel class which has a few properties, the set those properties to the selected value of the corresponding combo box (manually or using databinding) then pass the search model to the other classes.
I’m trying to use InfoGainAttributeEval in Weka for feature selection, how to save the result? I try to save it but seems like my weka just save my input data, not the result of feature selection.
Welcome to SO. As far as I understand you want to get the ranked values of the attributes. To do this, right click on the "Ranker + InfoGainAttributeEval" statement in the "Result List" section. Select "Save result buffer". You can see the results in programs such as notepad. You can also import it into "Excel" and create it in the chart. I think you selected "Ranker" in the Search Method section. I think it is an image as seen in the figure below.
After selecting and running "InfoGainAttributeEval" and "Ranker" it will give you a "ranked" list (Use full training set). Right click and select "Save Reduced Data" then save. Open the file in notepad as well. Open in Weka too. Select the ones whose Rank value is 0 in Weka and delete them with "Remove". Let those with rank value be left. Now you can get the same result reduced with these features. Save in .arff format. Now you have acquired Reduced data.
If "Save Reduced Data" is not working for you, here is another approach.
Attribute selection can be accomplished in the Preprocess tab.
There is a bar near the top for Filtering the data. Click the
"Choose" button. Under Filters->Supervised->Attribute you will
find AttributeSelection. Select that.
Once it says "AttributeSelection" in the Filter bar, you can click
on the bar to pick a selection method and a search method as well as
set the parameters for those choices.
Once you have made your choices for the feature selection algorithm,
click Apply to the right of the filter bar so that the filter is
actually applied to the data. The data should now have the reduced
feature set. So all you need to do is save it by clicking on the
Save button at the top right.
This should save the reduced data set.
I'm implementing show/hide column behaviour in a standard C++ Win32 application (no frameworks).
Say we've got 3 columns in a ListView control in Details view. The user has the option to show/hide the last two columns in order to see the extra detail if wanted or hide them to reduce clutter. All works well except that after the columns are deleted and then re-added, the data from the sub-items in those columns doesn't show up again, i.e. the columns are empty.
None of the items themselves have been altered in the meantime - do I lose the sub-item text when I delete the columns or I am missing something to force the columns to redraw the data?
Steps to reproduce:
1) Create a ListView32 control with 3 columns and add a bunch of items (and text to each of the items' sub-items). All good.
2) The user clicks "Hide Details", so I use LVM_DELETECOLUMN twice to remove the last two columns and they disappear. All good.
3) The user clicks "Show Details", so I use LVM_INSERTCOLUMN to add the last two columns and the headings appear, but the columns themselves are empty.
As an alternative, setting the column widths to zero is a hack and the user can still grab the re-size column splitter, so it's not a great option.
Many thanks for any suggestions.
Typically one does not store data in GUI. In case of plain listview32 you should add items specifying LPSTR_TEXTCALLBACK instead of real text and then handle LVN_GETDISPINFOW notification supplying (sub)item data. Windows will send this notification for all items. You can force Windows to retrieve data again by sending LVM_UPDATE message.
Setting the column widths is a viable solution. That is the way I do it in my UIs when columns can be shown and hidden dynamically. It works fine.
To prevent the user from resizing "hidden" columns, simply subclass the ListView using SetWindowLongPtr(GWL_WNDPROC) or SetWindowSubclass() to intercept HDN_BEGINTRACK notifications from the ListView's header control:
Notifies a header control's parent window that the user has begun dragging a divider in the control (that is, the user has pressed the left mouse button while the mouse cursor is on a divider in the header control). This notification code is sent in the form of a WM_NOTIFY message.
...
Returns FALSE to allow tracking of the divider, or TRUE to prevent tracking.
I created a Combobox with CreateWindowEx. Everything goes well. But I would like to make a final feature: AutoSuggestion. The Combobox is used to do search text in a document, hence at some point, it have items that are the strings a user searched. The AutoSuggestion should be: drop down the list of items, find those items that begin with the string that a user typed in the edit control, but do not select one of them, do not display all other items, and finally do not change select item when keydown or keyup occurs, only highlight the item and select only when a user press Enter. Do you have any idea how to accomplish this task?
It sounds like you want Autocomplete functionality.
Hi, I am using weka.classifier.meta. Vote. I am combining three classifiers, one of them is SMO. I want to know how can I specifically set the parameter values for SMO. Is there a way to do this using the graphical user interface? I want to change the value of C.
Yes -- In the classify dialog, just click the name of the classifier next to the choose button, and a dialog with the parameters will be displayed.
Its not very intuitive, because it isn't a button you push to get the parameters dialog, rather its the label with the classifier name and parameters next to the choose button.