Home Database Mysql Tutorial vb.net数据库编程(04):一个SQLserver修改记录的简单例子。

vb.net数据库编程(04):一个SQLserver修改记录的简单例子。

Jun 07, 2016 pm 03:45 PM
sqlserver Revise database programming

同样,修改只是把结果返回数据库,不会显示。 因此,用一个判断来提示用户,修改是成功或者是失败,这样用户才好进行下一步。 这个例子,更简单,因为我们减少了再一次查询结果的代码。 因为修改中用了SQlcommand中的非查询方法。所以没有用到DataAdapter和D

同样,修改只是把结果返回数据库,不会显示。

因此,用一个判断来提示用户,修改是成功或者是失败,这样用户才好进行下一步。


这个例子,更简单,因为我们减少了再一次查询结果的代码。


因为修改中用了SQlcommand中的非查询方法。所以没有用到DataAdapter和DataSet。


Imports System.Data.SqlClient

Public Class Form1
    Dim cn As SqlConnection
    Dim cm As SqlCommand

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Try
            cn = New SqlConnection("Data Source=127.0.0.1;Initial Catalog=Sales;Integrated Security=False;User ID=sa;Password=123456;")
            cn.Open() '此句不能少
            cm = New SqlCommand(TextBox1.Text, cn)
            cm.ExecuteNonQuery()
            cn.Close()
            MessageBox.Show("操作成功")
        Catch ex As Exception
            MessageBox.Show("操作失败")
        End Try
    End Sub
End Class
Copy after login

结果如下:

vb.net数据库编程(04):一个SQLserver修改记录的简单例子。


这个例子减少了回显和修改SQl语句在代码中的集成,为了就是看清执行修改时不同的实现。


SQlcommand的不同。

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