Question

我的MySQL数据库我有一个日期列和一个时间列。使用这些值时，我在VisualBasic中使用正确的格式有很多问题。我知道有很多可能性，但我只试了5个小时，并且找不到适合我的方法。

这是数据库：

这是Vb.net代码：

Imports MySql.Data.MySqlClient

Public Class ShowTermine
    Private Sub ShowTermine_Load(sender As Object, e As EventArgs) Handles MyBase.Activated

    Dim conn As MySqlConnection
    conn = New MySqlConnection("server=server.org;Port=3306; userid=userid; password=password; database=database")
    Try
        Dim command As New MySqlCommand
        Dim sqlquery As String = "SELECT * from bsp_termin WHERE userid =" & Form1.userID(Form1.Select1)
        Dim adapter As New MySqlDataAdapter
        Dim data As MySqlDataReader
        Dim counter As Integer = 0
        Dim mydate As Date


        conn.Open()
        command.CommandText = sqlquery
        command.Connection = conn
        adapter.SelectCommand = command
        data = command.ExecuteReader

        TextBox1.Clear()
        TextBox2.Clear()
        TextBox3.Clear()

        While data.Read

            Me.TextBox1.Text += data(2).ToString("dd//MM//yyyy")
            Me.TextBox1.Text += Environment.NewLine

            Me.TextBox2.Text += data(3).ToString
            Me.TextBox2.Text += Environment.NewLine

            Me.TextBox3.Text += data(4).ToString
            Me.TextBox3.Text += Environment.NewLine

        End While
        data.Close()
        conn.Close()
    Catch ex As Exception
        MsgBox(Err.Number & "    " & Err.Description)
    End Try

End Sub

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    Me.Hide()
    Form2.Show()
    End Sub
End Class

如果我使用TextBox1中的普通字符串，则显示日期，例如2017-09-03。但我需要dd / mm / yyyy格式。所以Me.TextBox1.Text + = data（2）.ToString（＆＃34; dd // MM // yyyy＆＃34;）给出错误。我也尝试过使用CDate，但无法找到合适的格式。

如何在ListBox1中显示日期格式为＆＃34; 03.09.2017＆＃34;和TextBox3中的时间字段为＆＃34; 14：30＆＃34; （hh / mm）？

将mysql日期和mysql时间转换为VB DateTime

0 个答案: