通过 vb.net 代码使用 SQL 脚本

Question

我是 SQL Server 的新手。我经常在 Internet 上找到脚本来使用 SQL Server 执行不同的功能，但我不知道如何在 vb.net 中使用它们。

例如，我想通过我的 vb.net 应用程序运行以下代码，但不知道该怎么做。请指教

ALTER LOGIN sa ENABLE ; 去 ALTER LOGIN sa WITH PASSWORD = '' ; 去吧

谢谢

Answer 1

以下代码可能会有所帮助。来自http://www.daniweb.com/software-development/vbnet/code/216920

'Declare outside of class
Imports System.Data.SqlClient


'Declare inside of class >
Dim SQLStr As String
Private ConnString As String

'Connstring = Server Name, Database Name, Windows Authentication 
connstring = "Data Source=myserver;Initial Catalog=databasename;Integrated Security=True"

'SQL Staments

'SQL query = myQuery = "SQL Statment"

SQLStr = "SELECT * FROM tblQuestion"

SQLStr = "INSERT into tblQuestion(Name, Question) VALUES('Fred', 'How to use SQL?')"

SQLStr = "UPDATE tblQuestion SET Answer = 'Like this' Where Question = 'How to use SQL?'"

SQLStr = "DELETE FROM tblQuestion WHERE Question='How to use SQL?'"

'Write to SQL

Dim SQLConn As New SqlConnection() 'The SQL Connection
Dim SQLCmd As New SqlCommand() 'The SQL Command

SQLConn.ConnectionString = ConnString 'Set the Connection String
SQLConn.Open 'Open the connection

SQLCmd.Connection = SQLConn 'Sets the Connection to use with the SQL Command
SQLCmd.CommandText = SQLStr 'Sets the SQL String
SQLCmd.ExecuteNonQuery() 'Executes SQL Commands Non-Querys only

SQLConn.Close() 'Close the connection  









'Read from SQL

Dim SQLConn As New SqlConnection() 'The SQL Connection
Dim SQLCmd As New SqlCommand() 'The SQL Command
Dim SQLdr As SqlDataReader        'The Local Data Store

SQLConn.ConnectionString = ConnString 'Set the Connection String
SQLConn.Open 'Open the connection

SQLCmd.Connection = SQLConn 'Sets the Connection to use with the SQL Command
SQLCmd.CommandText = SQLStr 'Sets the SQL String
SQLdr = SQLCmd.ExecuteReader 'Gets Data

While dr.Read() 'While Data is Present        
      MsgBox(dr("Column Name")) 'Show data in a Message Box
End While

Loop While SQLdr.NextResult() 'Move to the Next Record
SQLdr.Close 'Close the SQLDataReader        

SQLConn.Close() 'Close the connection