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
本文介绍了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的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
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 thenFindStringExact
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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