如何在VB.NET中運行此SQL查詢？

Question

我正在使用SQL Server 2008，我有這個查詢工作成功，現在我的要求是在VB.NET（Visual Studio 2010）中執行此代碼。這是一個UPDATE命令。我如何轉換和運行在VB.NET中？

DECLARE @Rt int 
SET @Rt = 0 

UPDATE DB.dbo.Sales 
SET @Rt = Total = @Rt + Area1 + Area2 
FROM DB.dbo.Sales 

Answer 1

試試這個

Dim query as string = "UPDATE DB.dbo.Sales SET @Rt = Total = @Rt + Area1 + Area2 FROM Sales" 
Dim updateCommand as new SqlCommand(query, SqlConnection) 
updateCommand.Parameters.AddWithValue("@rt",0) 
If 0 <> updateCommand.ExecuteNonQuery() Then 'Number of rows affected by the query 
'Update command was successfull. 
End If