如何级联更新XML文件 [英] How to cascade update XML file

问题描述

我是c＃的新手，我正在寻找xml文件的级联更新

因为我有2个课程首先是课程，第二个是教练



我尝试过：



//在xml文件中插入课程类属性



private void button1_Click（对象发件人，EventArgs e）



{

试试

{

course cor = new course（）;

cor.course_code = int.Parse（textBox1.Text）;

cor .totalnum = int.Parse（textBox2.Text）;

cor.name = textBox3.Text;

cor.coursecat = comboBox1.Text;

savexml.SaveData（cor，data.xml）;



}

catch（Exception ex）

{

MessageBox.Show（ex.Message）;

}

}



//在xml文件中插入讲师类属性



private void button2_Click_1（object sender，EventArgs e）

{

try

{

instructor inst = new讲师（）;

inst.instructor_id = int.Parse（textBox4.Text）;

inst.NAME = textBox5.Text;

inst .phone_num = textBox6.Text;

inst.ADDRESS = textBox7.Text;

inst.Email = textBox8.Text;

savexml.SaveData （inst，data.xml）;

}

catch（Exception exc）

{

MessageBox .Show（exc.Message）;

}



}

解决方案

在用于保存XML的所有.NET FCL方法中在一个文件中，你一次写下整个文件，所以不需要任何更新，cascade或者没有。

-SA

看一下可以链接在一起的 BindingSources 。

这是一个很好的CodeProject上的文章展示了它是如何工作的：

详细数据绑定教程 [ ^

i am a newbie in c# and i am searching for cascade update from xml files
as i have 2 classes first is course and the second is instructor

What I have tried:

// inserts course class attributes in xml file

private void button1_Click(object sender, EventArgs e)

{
try
{
course cor = new course();
cor.course_code = int.Parse(textBox1.Text);
cor.totalnum = int.Parse(textBox2.Text);
cor.name = textBox3.Text;
cor.coursecat = comboBox1.Text;
savexml.SaveData(cor, "data.xml");

}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}

// inserts instructor class attributes in xml file

private void button2_Click_1(object sender, EventArgs e)
{
try
{
instructor inst = new instructor();
inst.instructor_id = int.Parse(textBox4.Text);
inst.NAME = textBox5.Text;
inst.phone_num = textBox6.Text;
inst.ADDRESS = textBox7.Text;
inst.Email = textBox8.Text;
savexml.SaveData(inst, "data.xml");
}
catch (Exception exc)
{
MessageBox.Show(exc.Message);
}

}

解决方案

In all .NET FCL methods used to save XML in a file, you write the whole file at once, so there is no a need in any updates, "cascade" or not.

—SA

Take a look at BindingSources which can be chained together.
Here is an excellent article on CodeProject that shows how it works:
A Detailed Data Binding Tutorial[^]

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