文本框到组合框 [英] Textbox to a combobox

问题描述

你好!!



我正在学习vb.net 2013



i有疑问



i有两个文本框，textbox1和textbox2



在textbox1中输入的值名称应该在textbox2的反面显示



例如



textbox1 = Water



textbox2 = retaw



现在当我点击按钮



textbox2中的值应该在下面的方法中在一个组合框中



r



e



t



a



w



有人可以指导我完成编码，在组合框中以上述格式显示输入的名称



提前致谢！



我尝试了什么：



我尝试了第一部分，输入文本的反转完成

i想要s的解决方案第二部分

i想知道如何在组合框中显示反转文本

解决方案

简单：

< pre lang =c＃> private void tbUserInput_TextChanged（ object sender，EventArgs e）
{
tbReversed.Text = new string （tbUserInput.Text.Reverse（）ToArray的（））;
}

private void tbReversed_TextChanged（ object sender，EventArgs e）
{
cbReversedItems.Items.Clear（）;
foreach （ char c in tbReversed.Text）
{
cbReversedItems.Items.Add（c）;
}
}

 Dim元音As String =aeiou
 Dim alphabet As String =abcdefghijklmnopqrstuvwxyz
 
如果vowels.Contains（ComboBox1.Text）则
 TextBox1.Text = alphabet 
 End If 

 Dim nameWithThreeVowels As String =aeixyz
 
 Dim numberOfVowels As Integer = 0 
 Dim vowelsFound As String =
 
'遍历每个字符'c'
 for cIndex As Integer = 0 To nameWithThreeVowels.Length  -  1 
 Dim c As String = nameWithThreeVowels（cIndex）'获取指定位置的字母
如果元音。包含（c）那么
 numberOfVowels + = 1 
 
 vowelsFound& = c& ，
结束如果
下一个
 
'删除最后一个逗号，这样你就不会得到'1,2,3'，例如
如果不是vowelsFound =那么
 vowelsFound = vowelsFound.Substring（0，vowelsFound.Length  -  2）
结束如果
 
如果numberOfVowels = 3那么
 MsgBox（找到3个元音：& vowelsFound
结束如果

Hello !!

I am learning vb.net 2013

i have a doubt

i have two textboxes, textbox1 and textbox2

the value name entered in textbox1 should be displayed in the reverse in textbox2

for example

textbox1= Water

textbox2= retaw

now when i click the button

the value in textbox2 should in the below method in a combobox

r

e

t

a

w

can someone please guide me through the coding to display the entered name in the above format in combobox

Thanks in advance !!

What I have tried:

I tried the first part, reverse of the entered text is done
i want the solution for the second part
i want to know how to display the reversed text in the combobox

解决方案

Easy:

private void tbUserInput_TextChanged(object sender, EventArgs e)
    {
    tbReversed.Text = new string(tbUserInput.Text.Reverse().ToArray());
    }

private void tbReversed_TextChanged(object sender, EventArgs e)
    {
    cbReversedItems.Items.Clear();
    foreach (char c in tbReversed.Text)
        {
        cbReversedItems.Items.Add(c);
        }
    }

Dim vowels As String = "aeiou"
Dim alphabet As String = "abcdefghijklmnopqrstuvwxyz"

If vowels.Contains(ComboBox1.Text) Then
    TextBox1.Text = alphabet
End If

Dim nameWithThreeVowels As String = "aeixyz"

Dim numberOfVowels As Integer = 0
Dim vowelsFound As String = ""

' loop through each character 'c'
For cIndex As Integer = 0 To nameWithThreeVowels.Length - 1
    Dim c As String = nameWithThreeVowels(cIndex) 'get the letter at the specified position
    If vowels.Contains(c) Then
        numberOfVowels +=1
        
        vowelsFound &= c & ","
    End If
Next

' remove the last comma so you don't end up with '1,2,3,' for example
If Not vowelsFound = "" Then
    vowelsFound = vowelsFound.Substring(0, vowelsFound.Length - 2)
End If

If numberOfVowels = 3 Then
    MsgBox("3 vowels found: " & vowelsFound)
End If

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