2010-11-27 110 views
0

我想分配給一個數組的記錄,必須分裂成更多的元素爲搜索條件的原因。例如,如果criteria設置爲First Name,則搜索數組元素0中的匹配關鍵字,因爲這是在當前所選記錄爲Split()之後放置名字的位置。NullReferenceException是未處理的VB.NET

源的搜索格式:

Public Class frmSearch 
    Dim arrayCurrentRecord(6) As String 
    Private Sub btnCancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCancel.Click 
     Me.DialogResult = DialogResult.Cancel 
    End Sub 

    Private Sub btnSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSearch.Click 
     'fill array with list box items 
     Dim arraySearch(frmMain.numberOfRecords) As String 
     For i = 0 To frmMain.numberOfRecords - 1 
      arraySearch(i) = frmMain.lstListBox.Items(i) 
     Next i 

     If rbtnFirstName.Checked = True Then 
      For i = 0 To UBound(arraySearch) 
       arrayCurrentRecord = arraySearch(i).Split(" ") 
       If InStr(arrayCurrentRecord(0), txtSearch.Text) = True Then 
        lstSearch.Items.Add(arraySearch(i)) 
       End If 
      Next i 
      MsgBox("search complete") 
     End If 
    End Sub 
End Class 

回答

0

更改For i = 0 To UBound(arraySearch)For i = 0 To UBound(arraySearch) - 1固定的問題,但它不會找到任何東西只是說,搜索完成。

-1

更改線

If InStr(arrayCurrentRecord(0), txtSearch.Text) = True 

If InStr(arrayCurrentRecord(0), txtSearch.Text) 

解決了這個問題。

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