WPF 中的键值对组合框 [英] Key Value Pair Combobox in WPF

问题描述

考虑我有绑定到 ComboBox 的键值对集合(Ex Key=MSFT Value=MSFT Microsoft).DisplayMemeberPath=值.需要完成以下工作

Consider I have Key Value Pair Collection (Ex Key=MSFT Value=MSFT Microsoft) which I bind to the ComboBox. DisplayMemeberPath=Value. the Following needs to be accomplished

• 在选择一个项目时，只需要在 Combo 中显示 Key，

• On Selection of a Item only the Key needs to be displayed in Combo,

用户还可以在组合中输入一个全新的值.

the user could also type a brand new value in the Combo.

我无法想出同时支持这两种功能的解决方案.解决一个破坏另一个.

I cant come up with the solution that supports both these features. Solving one breaks the other.

<ComboBox IsTextSearchEnabled="True" Name="cmbBrokers" IsEditable="True" 
ItemsSource="{Binding BrokerCodes}" SelectedValuePath="Key" 
 DisplayMemberPath="Value" Text="{Binding SelectedBroker, Mode=TwoWay}">

推荐答案

我猜你要找的内容如下.

I guess what you're looking for is as follows.

public class ComboBoxPairs
{
    public string _Key { get; set; }
    public string _Value { get; set; }

    public ComboBoxPairs(string _key,string _value )
    {
        _Key = _key ;
        _Value = _value ;
    }
}

然后你继续使用这个类

List<ComboBoxPairs> cbp = new List<ComboBoxPairs>();

cbp.Add(new ComboBoxPairs("Microsoft", "MSFT"));
cbp.Add(new ComboBoxPairs("Apple", "AAPL"));

并将其绑定到您拥有的组合框

And bind it to the combobox you have

cmbBrokers.DisplayMemberPath = "_Key";
cmbBrokers.SelectedValuePath = "_Value";

cmbBrokers.ItemsSource = cbp;

当您需要访问它时，只需执行此操作

And When you need to access it just do this

ComboBoxPairs cbp = (ComboBoxPairs)cmbBrokers.SelectedItem;

string _key = cbp._Key;
string _value = cbp._Value;

这就是您需要做的全部.

This is all you need to do.

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