2024年3月23日发(作者：)

代码如下，希望对你有帮助。谢谢采纳

~

using System;

using c;

using entModel;

using ;

using g;

using ;

using ;

using ;

namespace

记事本

{

public partial class cc : Form

{

public cc()

{

InitializeComponent();

}

private void

新建

ToolStripMenuItem_Click(object sender, EventArgs e)

{

= "";

}

private string Url;

private void

打开

ToolStripMenuItem_Click(object sender, EventArgs e)

{

OpenFileDialog ofd = new OpenFileDialog();

= "

打开

|*.txt";

if (alog() == )

{

le(me,ext);

Url = me;

}

}

private void

保存

ToolStripMenuItem_Click(object sender, EventArgs e)

{

if (Url == null)

{

SaveFileDialog sa = new SaveFileDialog();

= "

保存

(*.txt)|*.txt";

if (alog() == )

{

le(me,

ext);

Url = me;

}

}

else

{

le(Url, ext);

}

}

private void

另存为

ToolStripMenuItem_Click(object sender, EventArgs e)

{

SaveFileDialog sa = new SaveFileDialog();