我想与组合框进行比较，在这种比较下，我想删除其他组合框的值 [英] I want to compare to combobox and on that comparision i want to remove the value of other combobox

问题描述

Private Sub ComboBox3_MouseEnter(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox3.MouseEnter
    If ComboBox4.FindStringExact("G1 Bed 1") = True Then
        ComboBox3.Items.Remove("G1 Bed 1")
    Else
        ComboBox3.Items.Add("G1 Bed 1")
    End If
End Sub

如果组合框4包含"G1床1"，则组合框3不应为其自身添加值.

if combobox 4 contain "G1 Bed 1" then combobox3 shuld not add value to itself

推荐答案

注意:
如果未找到与搜索到的字符串匹配的项目，则FindStringExact函数将返回-1值，否则将返回项目索引.

在开始编程之前，我们需要回答一个简单的问题: 组合框是否包含搜索到的字符串?

答案编号	combobox3	combobox4
1	FALSE	FALSE
2	FALSE	TRUE
3	TRUE	FALSE
4	TRUE	TRUE

Note:
If no items are found that match the searched string then FindStringExact function returns a -1 value, else returns an index of item.

Before we start programming, we need to answer simple question: Do the comboboxes contains searched string?

Answer no.	combobox3	combobox4
1	FALSE	FALSE
2	FALSE	TRUE
3	TRUE	FALSE
4	TRUE	TRUE

Dim iPosA as Integer = 0, iPosB as Integer = 0
iPosA = ComboBox3.FindStringExact("G1 Bed 1") 'do combobox3 contains searched string?
iPosB = ComboBox4.FindStringExact("G1 Bed 1") 'do combobox4 contains searched string?
'if combobox3 and combobox4 not contain searched string, then add it into combobox3
If iPosA = -1 And iPosB = -1 Then ComboBox3.Items.Add("G1 Bed 1")
'if combobox3 contain searched string and combobox4 contain, then remove it from combobox3
If iPosA > -1 And iPosB > -1 Then ComboBox3.Items.Remove(ComboBox3.Items(iPosA))
End If

希望对您有所帮助.

I hope it will be helpful.

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