我对VB.NET和JSON都是全新的,我想弄清楚如何对SQL 2005 Express服务器执行SQL查询并将返回值格式化为JSON 。我得到了使用这个(也许非常新手)代码的查询工作;通过VB.NET和JSON的SQL查询
Imports System
Imports System.Data
Imports System.Data.SqlClient
Imports System.Web.UI
Imports System.Web.UI.WebControls
Partial Public Class SQLConnect
Inherits System.Web.UI.Page
'Defines SQL variables
Dim con As New SqlConnection
Dim cmd As New SqlCommand
Dim dr As SqlDataReader
Dim ReadData As String
Dim i As Integer
Sub Click(ByVal s As Object, ByVal e As EventArgs)
'Define SQL address, database, username and password
con.ConnectionString = "Data Source=localhost\SQLEXPRESS;Initial Catalog=tempdb;User ID=tesst;Password=test"
Try
'Initialize connection
con.Open()
'Specify SQL query
cmd = New SqlCommand("SELECT * FROM Member", con)
'Execute query, dump result array into variable
dr = cmd.ExecuteReader()
messageLabel.Text = "<br />Connection established<br />"
While (dr.Read)
i = 0
For i = 0 To dr.FieldCount - 1
'Dump query results into a variable
ReadData += dr.Item(i).ToString
Next
End While
'Print query results
messageLabel2.Text = ReadData
'Close connection
con.Close()
Catch ex As Exception
messageLabel.Text = "<br />Connection failed<br />"
End Try
End Sub
End Class
我一直在看this,我希望能看到使用这个类或任何其他好的方法一些代码示例。
任何帮助将不胜感激,任何您可能有的要点和提示。