template文件vbnet连接mysql数据库登录_vb连接SQL数据库登录代码我的代码是连接到SQL数据库，输⼊⽤户密码，点登录，然后打开下⼀个界⾯，现在数据库是连上了，但IF语句⽆效，直接⾛ELSE，菜鸟⼀个，⾼⼿帮我改改～(这段代码原来连的是ACCESS数据源...access下载了用不了
mysql安装教程菜鸟课程我的代码是连接到SQL数据库，输⼊⽤户密码，点登录，然后打开下⼀个界⾯，现在数据库是连上了，但IF语句⽆效，直接⾛ELSE，菜鸟⼀个，⾼⼿帮我改改～(这段代码原来连的是ACCESS数据源库) Dim sConnString As String = _ "Data Source =(local);Initial Catalog =LiMin SuperMarket Manage System;Integrated Security=SSPI" Dim myCn As New SqlConnection Private Sub
OK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OK.Click Try myCn.ConnectionString = sConnString myCn.Open() Dim mySQL As String = "Select PersonnelID From Users Where Account='" & Me.boxname.Text & "' And Code='" & Me.PasswordTextBox.Text & "'" Dim sComm As New SqlCommand(mySQL, myCn) Dim s As Object = sComm.ExecuteScalar If sComm.ExecuteScalar Then Dim User_MainForm As New form1 User_MainForm.Show() Else MsgBox("⽤户名或密码不正确，请重试！") End If Catch ex As OleDbException MsgBox(ex.Message) Finally myCn.Close() '关闭连接 End Try End Sub
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