我在數據庫名稱用戶(用戶名,用戶ID,國家)中有一個表。我想在asp.net中檢索數據。但我有連接sql數據庫的問題。這是我的代碼使用vb將sql數據庫連接到asp.net
Public Sub connect()
Dim DatabaseName As String = "user"
Dim server As String = "loalhost"
Dim userName As String = "me"
Dim password As String = " "
If Not conn Is Nothing Then conn.Close()
conn.ConnectionString = String.Format("server={0}; user id={1}; password={2}; database={3}; pooling=false", server, userName, password, DatabaseName)
End Sub
我試試這個使用此代碼,但錯誤檢索數據
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Try
conn.Open()
Catch ex As Exception
End Try
Dim cmd As New SqlCommand(String.Format("SELECT username FROM user"))
cmd.ExecuteNonQuery()
conn.Close()
End Sub
請與我們分享你獲得 –
誤差存在誤差在cmd.ExecuteNonQuery() –
1)您可以使用[SqlConnectionStringBuilder](https://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlconnectionstringbuilder(v = vs.110).aspx)。 2)它是「本地主機」,而不是「loalhost」。 –