如何获取在填充Dictionary的ComboBox中SelectedValue的值 [英] How to get value of SelectedValue in ComboBox filled with Dictionary

问题描述

我们有这样的字典：

  var dictionary = new Dictionary< int，int& {{0,100}，{1,202}，{2,309}，}; 
  

等等很多值。字典绑定到comboBox像这样：

  comboBox1.ItemsSource = dictionary; 
 comboBox1.DisplayMemberPath =Value; 
  

我想知道如何comboBox.Text只能手动输入值和此代码：

  string value = comboBox1.SelectedValue.ToString 
  

返回值如[1,202]，而我需要清除int TValue202。我无法找到类似的问题，所以我在那里问，希望答案可能对别人有用。

解决方案

看起来您必须将 SelectedValue 变成 KeyValuePair< int，int> ：

  string value =（（KeyValuePair< int，int>）comboBox1.SelectedValue）.Value.ToString（）;但是，你应该放一个brak点，并检查什么类型 SelectedValue 
真的是。
 
 
 
我假设它是 KeyValuePair< int，int>  字典< int，int> 以及因为 SelectedValue.ToString（）的输出字符串 [1，202] 。
 
We have dictionary like this:
var dictionary = new Dictionary<int, int> { { 0, 100 }, { 1, 202 }, { 2, 309 }, };
and so on a lot of values. dictionary binded to comboBox like this:
comboBox1.ItemsSource = dictionary;
comboBox1.DisplayMemberPath = "Value";
I'm wonder how can I get selectedvalue of this comboBox, if comboBox.Text works only for manually inputted values and this code:
string value = comboBox1.SelectedValue.ToString();
return value like [1, 202], while I need clear int TValue "202". I'm unable to find similar question so I ask it there and hope that the answer may be useful for someone else.
解决方案
Looks like you have to cast SelectedValue into KeyValuePair<int, int>:
string value = ((KeyValuePair<int, int>)comboBox1.SelectedValue).Value.ToString();
However, you should put a brakepoint there and check what type SelectedValue really is.

I assume it's KeyValuePair<int, int> because your source collection is Dictionary<int, int> and because of output string for SelectedValue.ToString() which is [1, 202].

                        
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