In fact, there are many ready-made comboboxes implemented using JavaScript, including Ms, but I still like to do it myself. First look at the figure:
The word "combo" means "Combination", so ComboBox should be more than just an input + drop-down. Therefore, when designing a plug-in, I considered using the plug-in mode. Each plug-in is called a provider. Its function is to implement the functions in the drop-down window. Therefore, in the future, mo
Textchanged is required when you use the ComboBox control of WPF, but this property belongs to the Textbox Control. You don't have to worry about it. There is a textbox in ComboBox, so the key issue is how to find the Textbox Control in ComboBox.
Default ComboBox control composition:
The first layer (1 Control ):
Problem reason: When there is more than one Easyui combobox control on an interface, the data is requested at the same time as the interface loads. Because the data is loaded asynchronously, the drop-down data source fails to load, or the load is incorrect (string data).Scenario One: Do not set the URL (data load path) at the beginning, and then load the data source when you click the control price drop-down button.TD>Processing type:TD> TD>inputID= "
The following code can implement the ComboBox by default check the first item, in actual development we may use!// handle the problem of the ComboBox default check class= "Easyui-combobox" name= "User_type" data-options= " Valuefield: ' id ', textField: ' Name ', URL: ' $app ->urlmanager->createurl (' member/my-member/user-type ')?> ', onloadsuccess:
How do I set the size of the ComboBox drop-down box and draw a type Excel worksheet in the drop-down box ??? Development and Application of VCL Components
Http://www.delphi2007.net/DelphiVCL/html/delphi_20061221121414222.html
Today, I got an exam on this subject.
1. Set the width and height of the ComboBox drop-down box (you need to call the API)
2. Draw a table similar to excel in the
ComboBox combo box can be filled out, you can choose, you can automatically search according to the content of the options can be part of the matching items
Can be filled out, you can choose, you can automatically search according to the content of the options can be part of the matching itemsDetails
Copy Code code as follows:
Http://webfx.eae.net/dhtml/combobox/combobox.htm
Http://webfx.eae.net/dhtml/
In the Delphi era, I do not like to edit the data directly on the Stringgrid, and if the entire ComboBox in this Drop-down selection box, it is simply troublesome.
After using WPF, I think it should be edited directly on the Stringgrid, otherwise, you will have to drag out a lot of TextBox and ComboBox out, then the DataGrid is left only the selected role.
The text is very say,
Use the Onendedit event (this event gets to the editor object and the Onafteredit event gets no editor object)Get the input data through the editor and save it.
int ci = 0;
for (Column col:columnlist) {for
(Combobox Cbb:col.getCombobox ()) {
if (CBB!= null) {
str + = "var ed" + Ci + "= $j (\" # "+randomnumber+" \ "). DataGrid (\" Geteditor\ ", {index:rowindex,field:\" "+col.getfield () +" \ "});";
STR + + "var val" + ci + "= ed" + Ci + ". Target.
The official has an example of grid curd:
http://examples.coolite.com/Examples/GridPanel/WebService_Connections/HandlerUsing/I make a slight change on the basis of it, using ComboBox as the editor of the grid:
First show the effect for everyone to adhere to the momentum of watching:
Key code:
Copy Code code as follows:
Width= ">"
Valuefield= "Name" typeahead= "false" loadingtext= "Searching ..." Width= "570" pagesize= "10"
Edit
Ajax| Programming | refresh | no refresh
Programming ideas are as follows:
1: Backstage According to the front of the superior department ID, get the corresponding subordinate departments, and then constitute a format for
Department Code 1-Department name 1| department code 2-Department name 2| department Code 3-department Name 3 ...
The client side of the foreground splits from the string, and then combobox the subordinate department with JavaScript
The JSON object definition in the JS file:/** * void * * @author Ckz */hkjson.selectoptiondisuse = [{' id ': ' ', ' text ': ' All '}, {' id ': ' 0 ', ' text ': ' Not void '}, {' id ' : ' 1 ', ' text ': ' Voided '}];Problem--Suppose Hkjson.selectoptiondisuse crawled out of the time is a JSON object A, there is no problem!However, if JSON object A is used in Easyui-combobox, that is, data: Hkjson.selectoptiondisuse, this time easyui-
From: http://liss.javaeye.com/blog/575771
Ext. form. the value of displayfield is always obtained for ComboBox submission. This problem has not occurred until I have made a ComboBox combination tree. No matter how I set it or modify the code, that is, the displayed content is submitted all the time, rather than the hidden value.
Later, this problem also occurred when using a common
The cell in listview does not have the Edit function. Therefore, you need to pop up a drop-down box frequently.
The following program demonstrates the combobox pop-up in the second column of listview.
1. Create a new project. The default form name is Form1. Drag a listview, remove a combobox, and drag an imagelist (to make the listview look more beautiful)
2. Set the attribute of listview1, View to Detail,
The embedded ComboBox in the EditorGridPanel usually does not display the expected field in the store of the ComboBox, but the field content specified by the store dataindex in the EditorGridPanel. To solve this problem, you need to use the renderer attribute in the ColumnModel of EditorGridPanel to display the ComboBox and re-render it. The method is as follows:
ComboBox drop-down menu control, when modifying a table in a ComboBox application within a database, if it is a method of displaying data using a common method, a method of adding dataThis will make the program more difficult to maintain later, using data binding here to let the ComboBox data implementation according to the database table data display, reduce the
Before writing the text, I have to say that the other WPF on the web to bind the way the ComboBox, after watching really let people want to die.Let's start by telling you a whole bunch of models, a bunch of control templates, and maybe you just want to know how to make the ComboBox show up.Convention First:To achieve this effect is very simple, except to let the data model tightly only a few lines of code.L
In winform, The datagridview interface can be described as a data display control with a large number of applications. You can use various controls in the datagridview interface.
There are already many. All of them instantiate a control and bind it through the datagridview. Controls. Add () method. Then, Data Binding and operations are performed through a specific operator.
The datagridview control is also used during project creation over the past few days, and the datagridview must use
Reproduced in: http://blog.csdn.net/fcsh820/article/details/3867053
Thanks to the original author for sharing such a good article.
By default, the ComboBox in winform is set to display the list in multiple texts, which is usually not in line with your daily applications,
Because daily applications usually bind key-value pairs.
So what should we do in the form of key-value pairs?
Because the value of each item in combox is an object, it is actually a
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