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我调用了一个数据库，在该数据库中它获取了一个以管道分隔的字符串，我将其分解为一个数组并填充文本框，这个确切的代码适用于除此之外的所有其他实例，我可以找出原因。此实例仅将字符串的前两个字母打印到两个文本框中

来自查询的数据看起来像这样“这是一个测试|这是一个测试”

    Dim queryString3 As String = "SELECT Answer FROM ShortAnswers where questionNumber = 12 and submission = 1375"
    Using connection As New SqlConnection(My.Settings.ConnString)
        Dim command As New SqlCommand(queryString3, connection)
        connection.Open()
        Dim rdr As String = command.ExecuteScalar()
        Dim P3 As String
        P3 = rdr
        Dim Part3 As New ArrayList(P3.Split("|"c))
        TextBoxA.Text = Part3(0)
        TextBoxB.Text = Part3(1)

在这个例子中，textboxa 取“t”的值，而 textbox b 取“h”的值 “this is a test|this is a test”的前两个字母

这件几乎相同的作品

    Dim queryString As String ="SELECT Answer FROM ShortAnswers where questionNumber = 11 and submission = 1375"          
        Using connection As New SqlConnection(My.Settings.OnLineTestingDB)
        Dim command2 As New SqlCommand(queryString, connection)
        connection.Open()
        Dim rdr1 As String = command2.ExecuteScalar()
        Dim P2 As String
        P2 = rdr1
        Dim Part2 As New ArrayList(P2.Split("|"c))
        Normal.Text = Part2(0)
        Normal1.Text = Part2(1)
        Normal2.Text = Part2(2)
    End Using
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1 回答 1

1

问题是从字符串而不是数组中获取字符

Dim Part3 As New ArrayList(P3.Split("|"c))
   TextBoxA.Text = P3(0)
   TextBoxB.Text = P3(1)

现在看起来像

Dim Part3 As New ArrayList(P3.Split("|"c))
   TextBoxA.Text = Part3(0)
   TextBoxB.Text = Part3(1)

解决了这个问题，谢谢你的帮助，有时你只需要一双额外的眼睛来唤醒你

于 2013-02-07T18:17:12.423 回答