在Visual C#中使用XML指南之读取XML (2)

窗口代码如下：

namespace XMLReading
{
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Xml;

public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.ListBox listBox1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.Button button4;
private System.Windows.Forms.Button button5;
private System.Windows.Forms.Button button6;
private System.Windows.Forms.Button button7;
private string xmlPath;
private XmlReader xRead;

/**//// ＜summary＞
/// 必需的设计器变量。
/// ＜/summary＞

private System.ComponentModel.Container components = null;

public Form1()
{
InitializeComponent();
}

/**//// ＜summary＞
/// 清理所有正在使用的资源。
/// ＜/summary＞

protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null) 
{
components.Dispose();
}
}
base.Dispose( disposing );
}

Windows 窗体设计器生成的代码#region Windows 窗体设计器生成的代码
/**//// ＜summary＞
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// ＜/summary＞

private void InitializeComponent()
{
this.listBox1 = new System.Windows.Forms.ListBox();
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.button4 = new System.Windows.Forms.Button();
this.button5 = new System.Windows.Forms.Button();
this.button6 = new System.Windows.Forms.Button();
this.button7 = new System.Windows.Forms.Button();
this.SuspendLayout();
// 
// listBox1
// 
this.listBox1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom) 
| System.Windows.Forms.AnchorStyles.Left) 
| System.Windows.Forms.AnchorStyles.Right)));
this.listBox1.ItemHeight = 12;
this.listBox1.Location = new System.Drawing.Point(8, 8);
this.listBox1.Name = "listBox1";
this.listBox1.Size = new System.Drawing.Size(716, 460);
this.listBox1.TabIndex = 0;

// 
// button1
// 
this.button1.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
this.button1.Location = new System.Drawing.Point(8, 488);
this.button1.Name = "button1";
this.button1.TabIndex = 1;
this.button1.Text = "Example1";
this.button1.Click += new System.EventHandler(this.button1_Click);
// 
// button2
// 
this.button2.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
this.button2.Location = new System.Drawing.Point(96, 488);
this.button2.Name = "button2";
this.button2.TabIndex = 2;
this.button2.Text = "Example2";
this.button2.Click += new System.EventHandler(this.button2_Click);

// 
// button3
// 
this.button3.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.button3.Location = new System.Drawing.Point(648, 488);
this.button3.Name = "button3";
this.button3.TabIndex = 3;
this.button3.Text = "Example7";
this.button3.Click += new System.EventHandler(this.button3_Click);

// 
// button4
// 
this.button4.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
this.button4.Location = new System.Drawing.Point(184, 488);
this.button4.Name = "button4";
this.button4.TabIndex = 4;
this.button4.Text = "Example3";
this.button4.Click += new System.EventHandler(this.button4_Click);

// 
// button5
// 
this.button5.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
this.button5.Location = new System.Drawing.Point(272, 488);
this.button5.Name = "button5";
this.button5.TabIndex = 5;
this.button5.Text = "Example4";
this.button5.Click += new System.EventHandler(this.button5_Click);

//
// button6
// 
this.button6.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
this.button6.Location = new System.Drawing.Point(360, 488);
this.button6.Name = "button6";
this.button6.TabIndex = 6;
this.button6.Text = "Example5";
this.button6.Click += new System.EventHandler(this.button6_Click);

// 
// button7
// 
this.button7.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left)));
this.button7.Location = new System.Drawing.Point(448, 488);
this.button7.Name = "button7";
this.button7.TabIndex = 7;
this.button7.Text = "Example6";
this.button7.Click += new System.EventHandler(this.button7_Click);
// 
// Form1
// 

this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(728, 517);
this.Controls.Add(this.button7);
this.Controls.Add(this.button6);
this.Controls.Add(this.button5);
this.Controls.Add(this.button4);
this.Controls.Add(this.button3);
this.Controls.Add(this.button2);
this.Controls.Add(this.button1);
this.Controls.Add(this.listBox1);
this.Name = "Form1";
this.Text = "XMLReader";
this.ResumeLayout(false);

//
// xmlPath
//
this.xmlPath = "sample.xml";
}

#endregion

/**//// ＜summary＞
/// 应用程序的主入口点。
/// ＜/summary＞

[STAThread]

static void Main() 
{
Application.Run(new Form1());
}

private void button1_Click(object sender, System.EventArgs e)
{
xRead = new XmlReader(this.xmlPath,this.listBox1);

try{
xRead.EachXml();
}
catch(XmlException xmlExp)
{
MessageBox.Show(xmlExp.ToString(),"Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
catch(Exception exp)
{
MessageBox.Show(exp.ToString(),"Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
finally
{
xRead.Dispose();
}
}

private void button2_Click(object sender, System.EventArgs e)
{
xRead = new XmlReader(this.xmlPath,this.listBox1);

try
{
xRead.ReadXmlByNodeType();
}
catch(XmlException xmlExp)
{
MessageBox.Show(xmlExp.ToString(),"Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
catch(Exception exp)
{
MessageBox.Show(exp.ToString(),"Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
finally
{
xRead.Dispose();
}
}

private void button3_Click(object sender, System.EventArgs e)
{
XmlNodeType[] xmlNType = {XmlNodeType.Element, XmlNodeType.EndElement, XmlNodeType.XmlDeclaration};
xRead = new XmlReader(this.xmlPath, this.listBox1);

try
{
xRead.FilterByNodeType(xmlNType);
}
catch(XmlException xmlExp)
{
MessageBox.Show(xmlExp.ToString(),"Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
catch(Exception exp)
{
MessageBox.Show(exp.ToString(),"Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
finally
{
xRead.Dispose();
}

}

private void button4_Click(object sender, System.EventArgs e)
{
xRead = new XmlReader(this.xmlPath, this.listBox1);

try
{
xRead.ReadXmlTextValue();
}
catch(XmlException xmlExp)
{
MessageBox.Show(xmlExp.ToString(),"Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
catch(Exception exp)
{
MessageBox.Show(exp.ToString(),"Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
finally
{
xRead.Dispose();
}
}

private void button5_Click(object sender, System.EventArgs e)
{
xRead = new XmlReader(this.xmlPath, this.listBox1);

try
{
xRead.ReadXmlAttributes();
}
catch(XmlException xmlExp)
{
MessageBox.Show(xmlExp.ToString(),"Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
catch(Exception exp)
{
MessageBox.Show(exp.ToString(),"Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
finally
{
xRead.Dispose();
}

}

private void button6_Click(object sender, System.EventArgs e)
{
xRead = new XmlReader(this.xmlPath, this.listBox1);
try
{
xRead.ReadXmlNamespace();
}
catch(XmlException xmlExp)
{
MessageBox.Show(xmlExp.ToString(),"Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
catch(Exception exp)
{
MessageBox.Show(exp.ToString(),"Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
finally
{
xRead.Dispose();
}
}

private void button7_Click(object sender, System.EventArgs e)
{
xRead = new XmlReader(this.xmlPath, this.listBox1);

try
{
xRead.ReadXml();
}
catch(XmlException xmlExp)
{
MessageBox.Show(xmlExp.ToString(),"Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
catch(Exception exp)
{
MessageBox.Show(exp.ToString(),"Error",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
finally
{
xRead.Dispose();
}
}
}

}