Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
308 views
in Technique[技术] by (71.8m points)

sql - Prepared Statements in VB.NET

I am new to prepared statements in vb.net and Microsoft SQL Server 2008. I can't really find any good sources for connecting to a database via connection string and executing prepared statements. Could someone show me an example or point me to a resource that might be useful?

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

Here's some quick example code:

Using cn  As New SqlConnection("your connection string here"), _
      cmd AS New SqlCommand("SELECT * FROM Table WHERE ID= @ID", cn)

    cmd.Parameters.Add("@ID", SqlDbType.Int).Value = 12345

    cn.Open()
    Using rdr As SqlDataREader = cmd.ExecuteReader()
        While rdr.Read()
            'Do something with the record
        End While
        rdr.Close()
    End Using
End Using

Of course you need to Import System.Data and System.Data.SqlClient.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...