combobox

[Winform] DataGridView 中 DataGridViewComboBox 的可编辑

由 女生的网名这么多〃 提交于 2020-02-16 22:18:01
在 DataGridView 中设置的 DataGridViewComboBox，默认是不可编辑的，即使将其列属性 DisplayStyle 设置成 ComboBox 或其他，也无法编辑； 故作如下处理： 一 DataGridViewComboBoxCell 重写 DataGridViewComboBox 的单元控件 DataGridViewComboBoxCell 1 /// <summary> 2 /// 自定义可编辑下拉框单元 3 /// </summary> 4 public class DataGridViewComboEditBoxCell : DataGridViewComboBoxCell 5 { 6 public override void InitializeEditingControl(int rowIndex, object initialFormattedValue, 7 DataGridViewCellStyle dataGridViewCellStyle) 8 { 9 base.InitializeEditingControl(rowIndex, initialFormattedValue, dataGridViewCellStyle); 10 11 ComboBox comboBox = (ComboBox)base.DataGridView

[Python] tkinter 之 Listbox & Combobox

由 こ雲淡風輕ζ 提交于 2020-02-14 17:45:49
示例： 1 #用户界面 2 import os 3 os.chdir('F:\\spyder_workspace\\ColCal') 4 import Main 5 from tkinter import * 6 from tkinter import ttk 7 8 root = Tk() 9 root.title("window") 10 root.geometry('500x500') 11 #创建标签 12 var1 = StringVar() 13 l = Label(root, bg='green', fg='yellow',font=('Arial', 12), width=10, textvariable=var1) 14 l.pack() 15 #列表框点击事件 16 def print_lb1(): 17 value = lb1.get(lb1.curselection()) 18 var1.set(value) 19 #列表框点击按钮 20 b1 = Button(root,text='print selection lb',width=18,height=2,command=print_lb1) 21 b1.pack() 22 #创建Listbox 23 var_lb1 = StringVar() 24 var_lb1.set(('C30','C35',

Multiple ComboBox with single DataSource

由 末鹿安然 提交于 2020-02-14 17:18:11
问题 I have 2 combo boxes that are tied up to a single binding source in a dataset. When I select an item in one of the combo boxes, they both change. I don't have code in the combobox themselves but I do have the dataset fill: this.cLIENT_BranchesTableAdapter.Fill(this.gcDataSet.CLIENT_Branches); What could be causing this? 回答1: Give each ComboBox their own BindingSource: comboBox1.DataSource = new BindingSource(source, string.Empty); comboBox2.DataSource = new BindingSource(source, string.Empty)

show and hide div depending upon selected checkbox with combobox option

由 微笑、不失礼 提交于 2020-02-07 06:59:05
问题 I have used this multiselect checkbox with a combobox option.. JsFiddle In my jsfiddle that checkbox with a combobox type will not work. I have too many codes. So, I didn't included. See this link for full codes I'm trying to show and hide the div content depending upon selected checkbox. it does not work. I tried this code separately (without a combobox checkbox only). it works. I have problem with checkbox with a combobox type. How do I show/hide div content based upon selected checkbox

show and hide div depending upon selected checkbox with combobox option

由 给你一囗甜甜゛ 提交于 2020-02-07 06:58:42
问题 I have used this multiselect checkbox with a combobox option.. JsFiddle In my jsfiddle that checkbox with a combobox type will not work. I have too many codes. So, I didn't included. See this link for full codes I'm trying to show and hide the div content depending upon selected checkbox. it does not work. I tried this code separately (without a combobox checkbox only). it works. I have problem with checkbox with a combobox type. How do I show/hide div content based upon selected checkbox

QHBoxLayout析构引发的异常

由 只谈情不闲聊 提交于 2020-02-04 11:58:35
自定义QHBoxLayout的布局，在析构时引发异常 Label = new QLabel(QString("AAAAA")); ComboBox = new QComboBox; SpacerItem = new QSpacerItem(200, 20, QSizePolicy::Fixed); HBox_Layout = new QHBoxLayout; HBox_Layout->addWidget(Label,0); HBox_Layout->addWidget(ComboBox,1); HBox_Layout->addSpacerItem(SpacerItem); delete HBox_Layout; delete Label; delete ComboBox; delete SpacerItem;//异常发生异常在这里 查找QHBoxLayout源码发现 /*! Destroys this box layout. The layout's widgets aren't destroyed. */ QHBoxLayout::~QHBoxLayout() { } 说明QHBoxLayout会自动析构QSpacerItem； 所以异常发生是因为析构冲突 来源： CSDN 作者： QQ2651401966 链接： https://blog.csdn.net/qq

Converter shows System.Data.Entity.DynamicProxies when bind to EF Model

由 。_饼干妹妹 提交于 2020-01-30 08:17:06
问题 I am writing a WPF MVVM Application. I am trying to use a converter to display a contact name in the combobox. I do not think I can use the DisplayMemberPath since a "fullname" column does not exist. The ComboBox is being bound to a class within a class using Entity Framework. Given the following: .cs Files public class Car { public int CarId { get; set; } public string Make { get; set; } public string Model { get; set; } public string Year { get; set; } public Contact Owner { get; set; } }

C# WPF ComboBox Mouse over color

由 怎甘沉沦 提交于 2020-01-30 04:42:11
问题 When the mouse hover over my ComboBox, I get an awful blue/lightblue pair of color for the backgroung of my ComboBox. I tried the solutions here :ComboBox Mouse over color, WPF Combobox Mouse Over, How to style ComboBox Background on Mouse Hover? or WPF combobox default hover color on togglebutton, but it doesn't change anything, I still get the default colors while hovering. Any suggestions ? Thank you all in advance, Demasiado. Here is the XAML code : <Window x:Class="Homepage.MainWindow"

StringFormat on Combobox Displaymemberpath

由 北城以北 提交于 2020-01-29 03:23:24
问题 I am trying to use StringFormat on DisplayMemberPath property of a ComboBox (WPF). But i don't know even if this is possible. can someone help me with some ideas. I am trying to do something like this: <ComboBox DisplayMemberPath="{Binding Path=MyDateField, StringFormat={}{0:dd/MM/yyyy}}" Name="CmbName" Width="120" /> But it isn't working... Thx All 回答1: simply use the ItemStringFormat property (works only if IsEditable="False") <ComboBox ItemsSource="{Binding YourItems}" DisplayMemberPath=

Multiple Colors for Each Item in JComboBox

由 雨燕双飞 提交于 2020-01-27 23:53:17
问题 I'm trying to make a ComboBox that uses different colors for different items. I wrote out some test code but it doesn't seem to work. Adding in the renderer causes the program to crash but commenting it out makes the box display on in the frame. Is there anything I'm missing or am I doing this the wrong way? I tried using the custom ComboBox Renderer tutorial as an example. Here is my code: TestComboColor.java import java.awt.Color; import javax.swing.JComboBox; import javax.swing.JFrame;
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