asp.net – 如何通过sqldatasource计算获取的行数

发布时间：2020-12-16 03:20:00 所属栏目：asp.Net 来源：网络整理

导读：Protected Sub Button1_Click(ByVal sender As Object,ByVal e As EventArgs) Handles Button1.Click Dim LoginChecker As New SqlDataSource() LoginChecker.ConnectionString = ConfigurationManager.ConnectionStrings("A1ConnectionString1").ToString()

Protected Sub Button1_Click(ByVal sender As Object,ByVal e As EventArgs) Handles Button1.Click
    Dim LoginChecker As New SqlDataSource()
    LoginChecker.ConnectionString = ConfigurationManager.ConnectionStrings("A1ConnectionString1").ToString()
    LoginChecker.SelectCommandType = SqlDataSourceCommandType.Text
    LoginChecker.SelectCommand = "SELECT username FROM A1login WHERE username=@username AND password=@password"
    LoginChecker.SelectParameters.Add("username",username.Text)
    LoginChecker.SelectParameters.Add("password",password.Text)
    Dim rowsAffected As Integer = 0
    Try
        rowsAffected = LoginChecker.<what i have to write here>
    Catch ex As Exception
        'Server.Transfer("LoginSucessful.aspx")
    Finally
        LoginChecker = Nothing
    End Try
    username.Text = rowsAffected
    ' If rowsAffected = 1 Then
    'Server.Transfer("A1success.aspx")
    '   Else
    'Server.Transfer("A1failure.aspx")
    '  End If

End Sub

这是login.aspx.vb的代码
??它根据返回的行检查数据库中的用户名和密码,并重定向到相应的页面.我在sqldatareader命名空间中找到正确的函数时遇到问题,因此它会计算受影响的行数.谁能告诉我应该在那里使用的功能？提前致谢.

解决方法

protected void Button1_Click(object sender,EventArgs e)
{
    DataView d =(DataView) SqlDataSource1.Select(DataSourceSelectArguments.Empty);
    Response.Write(d.Count);
}

（编辑：李大同）

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