vb.net搜索搜索字符串

Question

lot_no = "lot123" 

s.indexof("lot123") does not return zero 

而

s.indexof(lot_no) returns zero 

內有沒有人見過這樣的問題？

包含什麼？

For Each s As String In split1 

Answer 1

K，看在你的其他線程添加代碼。 當我執行下面的代碼時，我得到一個結果，我做錯了什麼？

Public lot__no As String = "<Lot no>928374</Lot no>" 
Sub DoSomething() 
    Dim temp_string As String = "<beginning of record>ETCETCETC" 
    Dim myDelims As String() = New String() {"<beginning of record>"} 
    Dim Split() As String = temp_string.Split(myDelims, StringSplitOptions.None) 

    For Each s As String In Split 
     If InStr(s, lot__no) <> 0 Then 
      Debug.WriteLine("found" + s) 
     End If 
    Next 
End Sub 

Answer 2

你問不知道是什麼但是這個代碼返回-1/-1

Dim lotnr As String = "lot123" 
For Each s As String In "123asd" 
    Debug.WriteLine(s.IndexOf("lot123")) 
    Debug.WriteLine(s.IndexOf(lotnr)) 
Next 

使用的IndexOf這樣：

Dim lotnr As String = "lot123" 
For Each s As String In "123asd" 
    Debug.WriteLine("lot123".IndexOf(s)) 
    Debug.WriteLine(lotnr.IndexOf(s)) 
Next 

這導致： -1 -1 -1 -1 -1 -1