vb.net 访问字典的键/值
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Accessing the key/value of a dictionary
提问by bbesase
How do I access the key/value of a dictionary? I have this code:
如何访问字典的键/值？我有这个代码：
Try
If keystrokeDictionary.ContainsKey(letter) Then
keystrokeDictionary.Keys.Equals(letter)
End If
Catch ex As Exception
MsgBox(ex.Message)
End Try
Return letter
Letteris a single letter that gets passed in with just its string value. Then keystrokedictionaryis a dictionary that the information looks like this:
Letter是一个仅带有字符串值的单个字母。然后keystrokedictionary是一个字典，里面的信息是这样的：
{[65, 0]}
{[66, 1]}
{[67, 2]}
Where the key is the first number and the value is the second number. Since my code isn't looking at the key/value right, it's not returning a letter, and therefore not working.
其中键是第一个数字，值是第二个数字。由于我的代码没有正确查看键/值，因此它没有返回字母，因此无法正常工作。
回答by Curt
.Equals()is not an assignment operator, but a comparison function.
.Equals()不是赋值运算符，而是比较函数。
Try
尝试
letter = " ";
If keystrokeDictionary.ContainsKey(letter) Then
letter = keystrokeDictionary.Values(letter)
End If
Return letter
回答by Sivashankar
Try like this,Use item to get corresponding value
试试这样，使用 item 来获取相应的值
letter = " ";
If keystrokeDictionary.ContainsKey(letter) Then
letter = keystrokeDictionary.Item(letter)
End If
Return letter
