vb.net 检查数组中是否存在 textbox.text
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Check if textbox.text exist in array
提问by Malasuerte94
Here i have my simple code, containt list of arrays and 2 text boxes, when i press button script must check if text form Textbox2 is found in list of array. Can you help me to fix it ? Thanks !
这里我有我的简单代码，包含数组列表和 2 个文本框，当我按下按钮脚本时，必须检查是否在数组列表中找到文本表单 Textbox2。你能帮我修一下吗？谢谢 ！
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
Dim pins() As String = {"dgge", "wada", "caas", "reaa"}
If TextBox2.Text = pins() Then
TextBox1.Text = "Succes"
End If End Sub
采纳答案by Steven Doggart
If you want to use LINQ, you can just do this:
如果你想使用 LINQ，你可以这样做：
If pins.Contains(TextBox2.Text) Then
TextBox1.Text = "Success"
End If
Otherwise, the easiest option would be to use a Listinstead of an array:
否则，最简单的选择是使用 aList而不是数组：
Dim pins As New List(Of String)(New String() {"dgge", "wada", "caas", "reaa"})
If pins.Contains(TextBox2.Text) Then
TextBox1.Text = "Success"
End If
But, if you must use an array, you can use the IndexOfmethod in the Arrayclass:
但是，如果必须使用数组，则可以使用类中的IndexOf方法Array：
If Array.IndexOf(TextBox2.Text) >=0 Then
TextBox1.Text = "Success"
End If
回答by MarcinJuraszek
If Array.IndexOf(pins, TextBox2.Text) <> -1 Then
TextBox1.Text = "Succes"
End If End Sub
回答by SysDragon
If pins.IndexOf(TextBox2.Text) >= 0 Then
TextBox1.Text = "Founded"
End If
Or if you use List(Of String)instead of array:
或者，如果您使用List(Of String)代替数组：
If pins.Contains(TextBox2.Text) Then
TextBox1.Text = "Founded"
End If
