將SQL語句的結果放入標籤

Question

我有一個名爲lblHours的標籤，如何將下面的SQL語句的結果放入此標籤中？

Dim SqlQuery1 As String = "SELECT SUM(Hours) FROM TimeSheet WHERE StaffID='" & 
    cbStaffID.Text & "' AND TimeSheetMonth='" & cbMonth.Text & "'" 

Answer 1

一個例子

Dim con As SqlConnection = "your Connection String" 
    Dim cmd As SqlCommand 
    Dim query As String = "SELECT SUM(Hours) FROM TimeSheet WHERE StaffID='" & 
cbStaffID.Text & "' AND TimeSheetMonth='" & cbMonth.Text & "'" 
    cmd = New SqlCommand(query, con) 
    Try 
    con.open 
     Dim myreader As SqlDataReader = cmd.ExecuteReader() 
     If myreader.Read() Then 
      yourlable.text = myreader.GetValue(0) 

     End If 
     myreader.Close() 
    Catch ex As System.Exception 
     MsgBox(ex.Message) 
    End Try 
    con.Close() 

Answer 2

有幾種不同的方法，你可以去這個問題。

此Microsoft文章介紹瞭如何使用OLEDB連接到Access數據庫...

http://support.microsoft.com/kb/821765

這就是去了解它的一種方式。還有其他方法可以連接到Access數據庫;你需要做一些基礎研究。