小编use*_*927的帖子

我正在尝试使用SQL Express 2012和vb.net的登录表单.我有数据库连接,现在我有以下问题; 代码附近'='附近的语法不正确; data = command.ExecuteReader有什么建议吗？这是代码谢谢!!!!!!!

Imports System.Data.SqlClient
Imports System.Data.OleDb


Public Class login
Private Sub login_user_Click(sender As Object, e As EventArgs) Handles login_user.Click
    Dim conn As New SqlConnection
    If conn.State = ConnectionState.Closed Then
        conn.ConnectionString = ("Server=192.168.0.2;Database=Sunshinetix;User=sa;Password=sunshine;")
    End If

    Try
        conn.Open()
        Dim sqlquery As String = "SELECT = FROM Users Where Username = '" & username_user.Text & "';"
        Dim data As SqlDataReader
        Dim adapter As New SqlDataAdapter
        Dim command As New SqlCommand
        command.CommandText = sqlquery
        command.Connection = conn
        adapter.SelectCommand = …