跪求vb.net代碼

新建窗口，添加picture控件

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利用line()方法畫線

line(開始x坐標(biāo),開始y坐標(biāo))-(結(jié)束x坐標(biāo),結(jié)束y坐標(biāo)),線的顏色，畫線的方式(默認(rèn)為線，B為矩形無填充，BF為填充的矩形)

For i = 1 To 16

Picture1.Line (0, Picture1.Height / 2)-(i * (Picture1.Width / 16), 0), RGB(255, 0, 0)

Picture1.Line (0, Picture1.Height / 2)-(i * (Picture1.Width / 16), Picture1.Height), RGB(255, 0, 0)

Picture1.Line (Picture1.Width, Picture1.Height / 2)-(i * (Picture1.Width / 16), 0), RGB(0, 255, 0)

Picture1.Line (Picture1.Width, Picture1.Height / 2)-(i * (Picture1.Width / 16), Picture1.Height), RGB(0, 255, 0)

Next i

如果要在窗口上畫也可以調(diào)用窗口的line方法即form.line()

求高手給一個VB.NET的程序開機(jī)啟動和關(guān)閉開機(jī)啟動的示例代碼

Private Sub 開機(jī)自動啟動_Click(sender As Object, e As EventArgs) Handles 開機(jī)自動啟動.Click

Dim a As Microsoft.Win32.RegistryKey = My.Computer.Registry.CurrentUser.CreateSubKey("Software\Microsoft\Windows\CurrentVersion\Run")

a.SetValue("查看.exe", Application.StartupPath "\查看.exe")

End Sub

Private Sub 關(guān)閉開機(jī)自啟_Click(sender As Object, e As EventArgs) Handles 關(guān)閉開機(jī)自啟.Click

Dim a As Microsoft.Win32.RegistryKey = My.Computer.Registry.CurrentUser.CreateSubKey("Software\Microsoft\Windows\CurrentVersion\Run")

a.DeleteValue("查看.exe")

End Sub

用VB.NET編寫以下程序。

using?System;

using?System.Windows.Forms;

namespace?WindowsFormsApplication1

{

public?partial?class?Form1?:?Form

{

Timer?tm?=?new?Timer();//實(shí)例化?timeer?

static?int?timeS?=?0;?//設(shè)置靜態(tài)變量記錄秒數(shù)

TimeSpan?ts?=?new?TimeSpan();?//實(shí)例化?TimeSpan?

public?Form1()

{

InitializeComponent();

}

private?void?button1_Click(object?sender,?EventArgs?e)

{

tm.Interval?=?1000;?//設(shè)置?timeer?1000毫秒執(zhí)行一次

tm.Tick?+=?new?EventHandler(timeer_Tick);?//設(shè)置?timeer?運(yùn)行事件

tm.Start();?//?啟用?timeer

}

private?void?timeer_Tick(object?sender,?EventArgs?e)

{

timeS?+=?1;?//秒數(shù)?+1?

ts?=?new?TimeSpan(0,?0,?timeS);?

label1.Text?=?ts.Hours?+?":"?+?ts.Minutes?+?":"?+?ts.Seconds;

}

private?void?button2_Click(object?sender,?EventArgs?e)

{

tm.Stop();

timeS?=?0;

}

}

}