Read an XML Document and display the file as a Tree
/*
Professional Windows GUI Programming Using C#
by Jay Glynn, Csaba Torok, Richard Conway, Wahid Choudhury,
Zach Greenvoss, Shripad Kulkarni, Neil Whitlow
Publisher: Peer Information
ISBN: 1861007663
*/
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Threading ;
using System.Text;
using System.IO ;
using System.Xml;
//
// Read an XML Document and display the file as a Tree.
//
// Shripad Kulkarni
// Date : May 15, 2002
//
namespace XMLTree
{
/// <summary>
/// Summary description for XMLTreeForm.
/// </summary>
public class XMLTreeForm : System.Windows.Forms.Form
{
private System.Windows.Forms.MainMenu mainMenu1;
private System.Windows.Forms.MenuItem menuItem1;
private System.Windows.Forms.MenuItem menuItem2;
private System.Windows.Forms.MenuItem menuItem3;
private System.Windows.Forms.OpenFileDialog openFileDialog1;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
enum VIEW { TREE_VIEW =0} ;
string XMLInputFile = null;
string FileSize = "";
string WorkingDir = Directory.GetCurrentDirectory();
string OrigFormTitle = "";
bool bFileLoaded = false ;
int CurrentView = (int)VIEW.TREE_VIEW ;
Object NodeTag = null ;
Thread t = null ;
TreeNode RootNode = null ;
Point ClickedPoint = new Point(0,0);
ArrayList TreeNodeArray = new ArrayList();
ImageList tr_il = new ImageList();
ImageList tb_il = new ImageList();
Bitmap img_fileopen , img_exit , img_collapse , img_expand , img_about;
private System.Windows.Forms.MenuItem menuItem4;
private System.Windows.Forms.MenuItem menuItem5;
private System.Windows.Forms.ToolBar toolBar1;
private System.Windows.Forms.TreeView treeView1;
private System.Windows.Forms.ToolBarButton Open;
private System.Windows.Forms.ToolBarButton Exit;
private System.Windows.Forms.ToolBarButton About;
private System.Windows.Forms.ToolBarButton SEPARATOR1;
private System.Windows.Forms.ToolBarButton ExpandAll;
private System.Windows.Forms.ToolBarButton CollapseAll;
private System.Windows.Forms.ToolBarButton Stop;
private System.Windows.Forms.ToolBarButton SEPARATOR2;
private System.Windows.Forms.ListBox listBox1;
private System.Windows.Forms.Splitter splitter1;
private System.Windows.Forms.ToolBarButton SEPARATOR3;
delegate void MyDelegate();
public XMLTreeForm()
{
InitializeComponent();
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.mainMenu1 = new System.Windows.Forms.MainMenu();
this.menuItem1 = new System.Windows.Forms.MenuItem();
this.menuItem3 = new System.Windows.Forms.MenuItem();
this.menuItem2 = new System.Windows.Forms.MenuItem();
this.menuItem4 = new System.Windows.Forms.MenuItem();
this.menuItem5 = new System.Windows.Forms.MenuItem();
this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
this.toolBar1 = new System.Windows.Forms.ToolBar();
this.Open = new System.Windows.Forms.ToolBarButton();
this.SEPARATOR1 = new System.Windows.Forms.ToolBarButton();
this.ExpandAll = new System.Windows.Forms.ToolBarButton();
this.CollapseAll = new System.Windows.Forms.ToolBarButton();
this.Stop = new System.Windows.Forms.ToolBarButton();
this.SEPARATOR3 = new System.Windows.Forms.ToolBarButton();
this.Exit = new System.Windows.Forms.ToolBarButton();
this.About = new System.Windows.Forms.ToolBarButton();
this.SEPARATOR2 = new System.Windows.Forms.ToolBarButton();
this.treeView1 = new System.Windows.Forms.TreeView();
this.listBox1 = new System.Windows.Forms.ListBox();
this.splitter1 = new System.Windows.Forms.Splitter();
this.SuspendLayout();
//
// mainMenu1
//
this.mainMenu1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.menuItem1,
this.menuItem4});
//
// menuItem1
//
this.menuItem1.Index = 0;
this.menuItem1.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.menuItem3,
this.menuItem2});
this.menuItem1.OwnerDraw = true;
this.menuItem1.Text = "File";
this.menuItem1.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.menuItem1_DrawItem);
this.menuItem1.MeasureItem += new System.Windows.Forms.MeasureItemEventHandler(this.menuItem1_MeasureItem);
//
// menuItem3
//
this.menuItem3.Index = 0;
this.menuItem3.OwnerDraw = true;
this.menuItem3.Text = "Open";
this.menuItem3.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.menuItem3_DrawItem);
this.menuItem3.Click += new System.EventHandler(this.menuItem3_Click);
this.menuItem3.MeasureItem += new System.Windows.Forms.MeasureItemEventHandler(this.menuItem3_MeasureItem);
//
// menuItem2
//
this.menuItem2.Index = 1;
this.menuItem2.OwnerDraw = true;
this.menuItem2.Text = "Exit";
this.menuItem2.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.menuItem3_DrawItem);
this.menuItem2.Click += new System.EventHandler(this.menuItem2_Click);
this.menuItem2.MeasureItem += new System.Windows.Forms.MeasureItemEventHandler(this.menuItem3_MeasureItem);
//
// menuItem4
//
this.menuItem4.Index = 1;
this.menuItem4.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.menuItem5});
this.menuItem4.OwnerDraw = true;
this.menuItem4.Text = "Help";
this.menuItem4.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.menuItem1_DrawItem);
this.menuItem4.MeasureItem += new System.Windows.Forms.MeasureItemEventHandler(this.menuItem1_MeasureItem);
//
// menuItem5
//
this.menuItem5.Index = 0;
this.menuItem5.OwnerDraw = true;
this.menuItem5.Text = "About";
this.menuItem5.DrawItem += new System.Windows.Forms.DrawItemEventHandler(this.menuItem3_DrawItem);
this.menuItem5.Click += new System.EventHandler(this.menuItem5_Click);
this.menuItem5.MeasureItem += new System.Windows.Forms.MeasureItemEventHandler(this.menuItem3_MeasureItem);
//
// openFileDialog1
//
this.openFileDialog1.Filter = "XML FILES| *.xml";
this.openFileDialog1.FileOk += new System.ComponentModel.CancelEventHandler(this.openFileDialog1_FileOk);
//
// toolBar1
//
this.toolBar1.Appearance = System.Windows.Forms.ToolBarAppearance.Flat;
this.toolBar1.Buttons.AddRange(new System.Windows.Forms.ToolBarButton[] {
this.Open,
this.SEPARATOR1,
this.ExpandAll,
this.CollapseAll,
this.Stop,
this.SEPARATOR3,
this.Exit,
this.About,
this.SEPARATOR2});
this.toolBar1.ButtonSize = new System.Drawing.Size(16, 16);
this.toolBar1.Cursor = System.Windows.Forms.Cursors.Hand;
this.toolBar1.DropDownArrows = true;
this.toolBar1.Name = "toolBar1";
this.toolBar1.ShowToolTips = true;
this.toolBar1.Size = new System.Drawing.Size(840, 25);
this.toolBar1.TabIndex = 0;
this.toolBar1.ButtonClick += new System.Windows.Forms.ToolBarButtonClickEventHandler(this.toolBar1_ButtonClick);
//
// Open
//
this.Open.ImageIndex = 0;
this.Open.ToolTipText = "Open XML File";
//
// SEPARATOR1
//
this.SEPARATOR1.Style = System.Windows.Forms.ToolBarButtonStyle.Separator;
//
// ExpandAll
//
this.ExpandAll.Enabled = false;
this.ExpandAll.ImageIndex = 3;
this.ExpandAll.ToolTipText = "Expand All Nodes";
//
// CollapseAll
//
this.CollapseAll.Enabled = false;
this.CollapseAll.ImageIndex = 4;
this.CollapseAll.ToolTipText = "Collapse All Nodes";
//
// Stop
//
this.Stop.Enabled = false;
this.Stop.ImageIndex = 5;
this.Stop.ToolTipText = "Stop";
//
// SEPARATOR3
//
this.SEPARATOR3.Style = System.Windows.Forms.ToolBarButtonStyle.Separator;
//
// Exit
//
this.Exit.ImageIndex = 1;
this.Exit.ToolTipText = "Exit Application";
//
// About
//
this.About.ImageIndex = 2;
this.About.ToolTipText = "Help About";
//
// SEPARATOR2
//
this.SEPARATOR2.Style = System.Windows.Forms.ToolBarButtonStyle.Separator;
//
// treeView1
//
this.treeView1.BackColor = System.Drawing.Color.White;
this.treeView1.Cursor = System.Windows.Forms.Cursors.Hand;
this.treeView1.Dock = System.Windows.Forms.DockStyle.Left;
this.treeView1.Font = new System.Drawing.Font("Verdana", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.treeView1.FullRowSelect = true;
this.treeView1.HotTracking = true;
this.treeView1.ImageIndex = -1;
this.treeView1.ItemHeight = 16;
this.treeView1.Location = new System.Drawing.Point(0, 25);
this.treeView1.Name = "treeView1";
this.treeView1.SelectedImageIndex = -1;
this.treeView1.Size = new System.Drawing.Size(360, 472);
this.treeView1.TabIndex = 3;
this.treeView1.AfterSelect += new System.Windows.Forms.TreeViewEventHandler(this.treeView1_AfterSelect);
//
// listBox1
//
this.listBox1.Dock = System.Windows.Forms.DockStyle.Fill;
this.listBox1.Font = new System.Drawing.Font("Verdana", 9.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.listBox1.ForeColor = System.Drawing.Color.Maroon;
this.listBox1.HorizontalScrollbar = true;
this.listBox1.ItemHeight = 16;
this.listBox1.Location = new System.Drawing.Point(368, 25);
this.listBox1.Name = "listBox1";
this.listBox1.ScrollAlwaysVisible = true;
this.listBox1.Size = new System.Drawing.Size(472, 468);
this.listBox1.TabIndex = 12;
//
// splitter1
//
this.splitter1.Location = new System.Drawing.Point(360, 25);
this.splitter1.Name = "splitter1";
this.splitter1.Size = new System.Drawing.Size(8, 472);
this.splitter1.TabIndex = 11;
this.splitter1.TabStop = false;
//
// XMLTreeForm
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(840, 497);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.listBox1,
this.splitter1,
this.treeView1,
this.toolBar1});
this.Menu = this.mainMenu1;
this.Name = "XMLTreeForm";
this.Text = "XML Viewer";
this.Resize += new System.EventHandler(this.XMLTreeForm_Resize);
this.Load += new System.EventHandler(this.XMLTreeForm_Load);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new XMLTreeForm());
}
private void XMLTreeForm_Load(object sender, System.EventArgs e)
{
// Add images to the imageList for treeView
tr_il.Images.Add(new Icon(WorkingDir+ "\\ROOT.ICO")); //ROOT 0
tr_il.Images.Add(new Icon(WorkingDir+ "\\ELEMENT.ICO")); //ELEMENT 1
tr_il.Images.Add(new Icon(WorkingDir+ "\\EQUAL.ICO")); //ATTRIBUTE 2
treeView1.ImageList = tr_il;
// Add images to the imageList for Toolbar
tb_il.Images.Add(new Bitmap(WorkingDir+ "\\FileOpen.bmp")); //ROOT 0
tb_il.Images.Add(new Bitmap(WorkingDir+ "\\exit.bmp")); //ELEMENT 1
tb_il.Images.Add(new Bitmap(WorkingDir+ "\\about.bmp")); //ATTRIBUTE 2
tb_il.Images.Add(new Bitmap(WorkingDir+ "\\ExpandTree.bmp")); //ATTRIBUTE 3
tb_il.Images.Add(new Bitmap(WorkingDir+ "\\CollapseTree.bmp")); //ATTRIBUTE 4
tb_il.Images.Add(new Bitmap(WorkingDir+ "\\Stop.bmp")); //ATTRIBUTE 5
toolBar1.ImageList = tb_il;
// Add images to the imageList for the MenuBar
img_fileopen = new Bitmap("FileOpen.bmp");
img_exit = new Bitmap("exit.bmp");
img_expand = new Bitmap("ExpandTree.bmp");
img_collapse = new Bitmap("CollapseTree.bmp");
img_about = new Bitmap("about.bmp");
OrigFormTitle = this.Text ;
}
private void menuItem3_Click(object sender, System.EventArgs e)
{
openFileDialog1.ShowDialog(this);
}
private void openFileDialog1_FileOk(object sender, System.ComponentModel.CancelEventArgs e)
{
// Initialize Buttons
EnableDisableControls() ;
// Initialize All the Arrays
treeView1.Nodes.Clear() ;
listBox1.Items.Clear() ;
TreeNodeArray.Clear();
bFileLoaded = false ;
XMLInputFile = openFileDialog1.FileName ;
this.Text = OrigFormTitle + " ..." + XMLInputFile ;
openFileDialog1.Dispose() ;
// Get the filename and filesize
FileInfo f = new FileInfo(XMLInputFile);
FileSize = f.Length.ToString();
// Begin thread to read input file and load into the ListBox
Thread t = new Thread(new ThreadStart(PopulateList));
t.Start();
// Begin thread to read input file and populate the Tree
Thread tt = new Thread(new ThreadStart(PopulateTree));
tt.Start();
}
private void PopulateList()
{
// Load the File
LoadFileIntoListBox();
}
private void PopulateTree()
{
// TreeView Nodes cannot be added in a thread , until the thread is marshalled
// using an Invoke or beginInvoke call.
// We create a delegate ( Funtion Pointer ) and invoke the thread using he delegate
MyDelegate dlg_obj ;
dlg_obj = new MyDelegate(ParseFile);
treeView1.Invoke(dlg_obj);
}
private void ParseFile()
{
// Use the XMLReader class to read the XML File and populate the
// treeview
try
{
XmlTextReader reader = null;
reader = new XmlTextReader(XMLInputFile);
reader.WhitespaceHandling = WhitespaceHandling.None;
string readerName = "" ;
bool start_node = false ;
int depth = 0;
TreeNode WORKINGNODE = null ;
RootNode = null ;
TreeNode AttrNode = null ;
TreeNode newNode = null ;
bool bIsEmpty = false ;
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element:
readerName = reader.Name;
bIsEmpty = reader.IsEmptyElement;
if ( ! start_node )
{
start_node = true ;
RootNode = this.treeView1.Nodes.Add(readerName);
AssociateTag(RootNode , reader.LineNumber);
RootNode.SelectedImageIndex = 0 ;
RootNode.ImageIndex = 0 ;
continue ;
}
depth = reader.Depth ;
if ( reader.IsStartElement() && depth == 1 )
{
WORKINGNODE = RootNode.Nodes.Add(reader.Name);
AssociateTag(WORKINGNODE, reader.LineNumber);
}
else
{
TreeNode parent = WORKINGNODE;
WORKINGNODE = parent.Nodes.Add(reader.Name);
AssociateTag(WORKINGNODE, reader.LineNumber);
}
WORKINGNODE.SelectedImageIndex= 1 ;
WORKINGNODE.ImageIndex= 1 ;
for (int i = 0; i < reader.AttributeCount; i++)
{
reader.MoveToAttribute(i);
string rValue = reader.Value.Replace("\r\n", " ");
AttrNode = WORKINGNODE.Nodes.Add(reader.Name);
// AttrNode = WORKINGNODE.Nodes.Add(reader.Name +"="+rValue);
AssociateTag(AttrNode, reader.LineNumber);
AttrNode.SelectedImageIndex = 1 ;
AttrNode.ImageIndex = 1 ;
TreeNode tmp = AttrNode.Nodes.Add(rValue);
tmp.SelectedImageIndex = 2 ;
tmp.ImageIndex = 2 ;
AssociateTag(tmp, reader.LineNumber);
AttrNode.SelectedImageIndex = 2 ;
AttrNode.ImageIndex = 2 ;
}
if ( bIsEmpty )
WORKINGNODE = WORKINGNODE.Parent ;
break;
case XmlNodeType.Text:
{
string rValue = reader.Value.Replace("\r\n" , " ");
newNode = WORKINGNODE.Nodes.Add(rValue);
AssociateTag(newNode, reader.LineNumber);
newNode.SelectedImageIndex = 2 ;
newNode.ImageIndex = 2 ;
}
break;
case XmlNodeType.EndElement:
WORKINGNODE = WORKINGNODE.Parent ;
break;
}
}
reader.Close();
RootNode.Expand();
}
catch(Exception eee)
{
Console.WriteLine(eee.Message);
}
}
private void treeView1_Click(object sender, System.EventArgs e)
{
}
private void treeView1_AfterSelect(object sender, System.Windows.Forms.TreeViewEventArgs e)
{
if ( ! bFileLoaded ) return ;
// The treenode is selected. Every node is tagged with LineNumber ( from input file ).
// This allows us to jump to the line in the file.
TreeNode tn;
tn = (TreeNode)e.Node;
Object ln = tn.Tag ;
int line = Convert.ToInt32(ln.ToString());
MoveToLine(line);
}
private void menuItem2_Click(object sender, System.EventArgs e)
{
AppExit();
}
private void AppExit()
{
Application.Exit() ;
}
private void LoadFileIntoListBox()
{
// Load the xml file into a listbox.
try
{
StreamReader sr = new StreamReader(XMLInputFile, Encoding.ASCII);
sr.BaseStream.Seek(0, SeekOrigin.Begin);
while (sr.Peek() > -1)
{
Thread.Sleep(5);
string str = sr.ReadLine();
listBox1.Items.Add(str);
}
sr.Close();
bFileLoaded = true ;
listBox1.SetSelected(1 , true);
}
catch(Exception ee)
{
Console.WriteLine("Error Reading File into ListBox " + ee.Message);
}
}
private void MoveToLine(int ln)
{
// Select the input line from the file in the listbox
listBox1.SetSelected(ln-1 , true);
}
private void AssociateTag(TreeNode t , int l)
{
// Associate a line number Tag with every node in the tree
NodeTag = new Object();
NodeTag = l ;
t.Tag = NodeTag ;
}
private void menuItem5_Click(object sender, System.EventArgs e)
{
// About Box is clicked
ShowAboutBox();
}
private void ShowAboutBox()
{
About abt = new About() ;
abt.ShowDialog() ;
}
private void EnableDisableControls()
{
// Enable Disable Buttons
switch ( CurrentView )
{
case 0 : // TREE VIEW
{
ExpandAll.Enabled = true;
CollapseAll.Enabled = true;
Stop.Enabled = true ;
treeView1.Visible = true;
}
break ;
case 1 : // REPORT VIEW
{
ExpandAll.Enabled = false ;
CollapseAll.Enabled = false ;
Stop.Enabled = false ;
}
break ;
}
}
private void toolBar1_ButtonClick(object sender, System.Windows.Forms.ToolBarButtonClickEventArgs e)
{
// Invoke the function upon clicking the toolbar button
int x = int.Parse(toolBar1.Buttons.IndexOf(e.Button).ToString());
switch(toolBar1.Buttons.IndexOf(e.Button))
{
case 0:
openFileDialog1.ShowDialog(this);
break;
case 1:
//separator
break;
case 2:
TExpandAll() ;
break;
case 3:
TCollapseAll();
break;
case 4:
if ( t != null && t.IsAlive )
{
t.Abort() ;
t = null ;
EnableDisableControls();
}
break;
case 5:
break;
case 6:
AppExit();
break;
case 7:
ShowAboutBox();
break;
case 8: // separator
//separator
break;
case 9: // Go Back
break;
case 10:// separator
break;
case 11:// Go Back
CurrentView = (int)VIEW.TREE_VIEW ;
EnableDisableControls();
break;
}
}
private void TExpandAll()
{
t = new Thread(new ThreadStart(TE));
t.Start();
}
private void TE()
{
// Expand all nodes in the tree
treeView1.ExpandAll() ;
}
private void TCollapseAll()
{
// Collapse all nodes in the tree
treeView1.CollapseAll() ;
}
void Clear()
{
TreeNodeArray.Clear();
}
private void menuItem1_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
{
//Owner Draw Menu Items
//Get the bounding rectangle
Rectangle rc = new Rectangle(e.Bounds.X+1 , e.Bounds.Y+1, e.Bounds.Width-5, e.Bounds.Height-1);
//Fill the rectangle
e.Graphics.FillRectangle(new SolidBrush(Color.LightGray) , rc);
//Unbox the menu item
MenuItem s = (MenuItem)sender ;
string s1 = s.Text ;
//Set the stringformat object
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Center ;
e.Graphics.DrawString(s1 , new Font("Ariel" ,10), new SolidBrush(Color.Black) , rc , sf );
Console.WriteLine(e.State.ToString());
//Check if the object is selected.
if ( e.State == (DrawItemState.NoAccelerator | DrawItemState.Selected) ||
e.State == ( DrawItemState.NoAccelerator | DrawItemState.HotLight) )
{
// Draw selected menu item
e.Graphics.FillRectangle(new SolidBrush(Color.LightYellow) , rc);
e.Graphics.DrawString( s1 , new Font("Veranda" , 10 , FontStyle.Bold ) , new SolidBrush(Color.Red), rc ,sf);
e.Graphics.DrawRectangle(new Pen(new SolidBrush(Color.Black)), rc );
}
e.DrawFocusRectangle();
e.Graphics.DrawRectangle(new Pen(new SolidBrush(Color.Black), 1 ), rc );
}
private void menuItem1_MeasureItem(object sender, System.Windows.Forms.MeasureItemEventArgs e)
{
// Set the menu item height
e.ItemWidth = 75 ;
}
private void menuItem3_MeasureItem(object sender, System.Windows.Forms.MeasureItemEventArgs e)
{
// Set the sub menu item height and width
e.ItemWidth = 95 ;
e.ItemHeight = 25 ;
}
private void menuItem3_DrawItem(object sender, System.Windows.Forms.DrawItemEventArgs e)
{
//Owner Draw Sub Menu Items
Rectangle rc = new Rectangle(e.Bounds.X, e.Bounds.Y, e.Bounds.Width, e.Bounds.Height);
e.Graphics.FillRectangle(new SolidBrush(Color.LightGray) , rc);
MenuItem s = (MenuItem)sender ;
string s1 = s.Text ;
StringFormat sf = new StringFormat();
sf.Alignment = StringAlignment.Far ;
sf.LineAlignment = StringAlignment.Center;
Image useImage = null ;
if ( s1 == "Open" )
{
useImage = img_fileopen;
}
if ( s1 == "ExpandAll" )
{
if ( CurrentView == (int)VIEW.TREE_VIEW )
s.Enabled = true;
else
s.Enabled = false ;
useImage = img_expand;
}
if ( s1 == "Exit" )
{
useImage = img_exit;
}
if ( s1 == "CollapseAll" )
{
if ( CurrentView == (int)VIEW.TREE_VIEW )
s.Enabled = true;
else
s.Enabled = false ;
useImage = img_collapse;
}
if ( s1 == "About" )
{
useImage = img_about;
}
Rectangle rcText = rc ;
rcText.Width-=5 ;
e.Graphics.DrawString(s1 , new Font("Veranda" ,10), new SolidBrush(Color.Blue) , rcText, sf );
e.Graphics.DrawRectangle(new Pen(new SolidBrush(Color.LightGray)), rc );
if ( e.State == ( DrawItemState.NoAccelerator | DrawItemState.Selected))
{
Rectangle rc1= rc ;
rc1.X = rc1.X + useImage.Width + 5 ;
rc1.Width = rc.Width - 25 ;
rc1.Height = rc.Height- 2 ;
e.Graphics.FillRectangle(new SolidBrush(Color.LightYellow) , rc);
e.Graphics.DrawString( s1 , new Font("Veranda" , 10 , FontStyle.Bold | FontStyle.Underline) , new SolidBrush(Color.Red), rcText,sf);
e.Graphics.DrawRectangle(new Pen(new SolidBrush(Color.Black),3), rc );
e.DrawFocusRectangle();
}
if ( useImage != null )
{
SizeF sz = useImage.PhysicalDimension;
e.Graphics.DrawImage(useImage, e.Bounds.X+5 , ( e.Bounds.Bottom + e.Bounds.Top ) /2 - sz.Height/2);
}
}
private void XMLTreeForm_Resize(object sender, System.EventArgs e)
{
}
}
}
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