vs2012 Dim reader As New SqlDataReader中的reader报错如下
“System.Data.SqlClient.SqlDataReader.Friend Sub New(command As System.Data.SqlClient.SqlCommand, behavior As System.Data.CommandBehavior)”是“Friend”,因此它在此上下文中不可访问。
Dimreader As SqlClient.SqlDataReader Try reader = cmd.ExecuteReader If reader.Read() = True Then Dim 学生成绩管理系统As New 学生信息管理系统 学生成绩管理系统.添加DToolStripMenuItem.Enabled = ...
weixin_39613712的博客在c#中执行sql语句时传递参数的小经验1、直接写入法:例如:int Id =1;string Name="lui";cmd.CommandText="insert into TUserLogin values("+Id+",'"+Name+"')";因为Id是数值,所以在传递的时候只需要在sql字符串...
大叔_爱编程的博客 代码如下: Dim conn1 As New System.Data.SqlClient.SqlConnection Dim cmd1 As New System.Data.SqlClient.SqlCommand Dim str1 As String Dim str2 As String str1 = Password1.Text str2 = System.Web.Security...
Emily_1021的博客'连接数据库的方法: Public Shared Function getConnectionString() As ... Dim conStr As String = System.Configuration.ConfigurationManager.ConnectionStrings("TEST.ConnectionString").Conn...