实例介绍
【实例简介】
【实例截图】
【核心代码】
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Drawing.Imaging;
using System.Text;
using System.Windows.Forms;
using ExtendedRichTextBox;
namespace RichTextEditor
{
public partial class frmMain : Form
{
// constructor
public frmMain()
{
InitializeComponent();
currentFile = "";
this.Text = "Editor: New Document";
}
#region "Declaration"
private string currentFile;
private int checkPrint;
#endregion
#region "Menu Methods"
private void NewToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
if (rtbDoc.Modified == true)
{
System.Windows.Forms.DialogResult answer;
answer = MessageBox.Show("Save current document before creating new document?", "Unsaved Document", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (answer == System.Windows.Forms.DialogResult.No)
{
currentFile = "";
this.Text = "Editor: New Document";
rtbDoc.Modified = false;
rtbDoc.Clear();
return;
}
else
{
SaveToolStripMenuItem_Click(this, new EventArgs());
rtbDoc.Modified = false;
rtbDoc.Clear();
currentFile = "";
this.Text = "Editor: New Document";
return;
}
}
else
{
currentFile = "";
this.Text = "Editor: New Document";
rtbDoc.Modified = false;
rtbDoc.Clear();
return;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void OpenToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
if (rtbDoc.Modified == true)
{
System.Windows.Forms.DialogResult answer;
answer = MessageBox.Show("Save current file before opening another document?", "Unsaved Document", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (answer == System.Windows.Forms.DialogResult.No)
{
rtbDoc.Modified = false;
OpenFile();
}
else
{
SaveToolStripMenuItem_Click(this, new EventArgs());
OpenFile();
}
}
else
{
OpenFile();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void OpenFile()
{
try
{
OpenFileDialog1.Title = "RTE - Open File";
OpenFileDialog1.DefaultExt = "rtf";
OpenFileDialog1.Filter = "Rich Text Files|*.rtf|Text Files|*.txt|HTML Files|*.htm|All Files|*.*";
OpenFileDialog1.FilterIndex = 1;
OpenFileDialog1.FileName = string.Empty;
if (OpenFileDialog1.ShowDialog() == DialogResult.OK)
{
if (OpenFileDialog1.FileName == "")
{
return;
}
string strExt;
strExt = System.IO.Path.GetExtension(OpenFileDialog1.FileName);
strExt = strExt.ToUpper();
if (strExt == ".RTF")
{
rtbDoc.LoadFile(OpenFileDialog1.FileName, RichTextBoxStreamType.RichText);
}
else
{
System.IO.StreamReader txtReader;
txtReader = new System.IO.StreamReader(OpenFileDialog1.FileName);
rtbDoc.Text = txtReader.ReadToEnd();
txtReader.Close();
txtReader = null;
rtbDoc.SelectionStart = 0;
rtbDoc.SelectionLength = 0;
}
currentFile = OpenFileDialog1.FileName;
rtbDoc.Modified = false;
this.Text = "Editor: " currentFile.ToString();
}
else
{
MessageBox.Show("Open File request cancelled by user.", "Cancelled");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void SaveToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
if (currentFile == string.Empty)
{
SaveAsToolStripMenuItem_Click(this, e);
return;
}
try
{
string strExt;
strExt = System.IO.Path.GetExtension(currentFile);
strExt = strExt.ToUpper();
if (strExt == ".RTF")
{
rtbDoc.SaveFile(currentFile);
}
else
{
System.IO.StreamWriter txtWriter;
txtWriter = new System.IO.StreamWriter(currentFile);
txtWriter.Write(rtbDoc.Text);
txtWriter.Close();
txtWriter = null;
rtbDoc.SelectionStart = 0;
rtbDoc.SelectionLength = 0;
}
this.Text = "Editor: " currentFile.ToString();
rtbDoc.Modified = false;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "File Save Error");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void SaveAsToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
SaveFileDialog1.Title = "RTE - Save File";
SaveFileDialog1.DefaultExt = "rtf";
SaveFileDialog1.Filter = "Rich Text Files|*.rtf|Text Files|*.txt|HTML Files|*.htm|All Files|*.*";
SaveFileDialog1.FilterIndex = 1;
if (SaveFileDialog1.ShowDialog() == DialogResult.OK)
{
if (SaveFileDialog1.FileName == "")
{
return;
}
string strExt;
strExt = System.IO.Path.GetExtension(SaveFileDialog1.FileName);
strExt = strExt.ToUpper();
if (strExt == ".RTF")
{
rtbDoc.SaveFile(SaveFileDialog1.FileName, RichTextBoxStreamType.RichText);
}
else
{
System.IO.StreamWriter txtWriter;
txtWriter = new System.IO.StreamWriter(SaveFileDialog1.FileName);
txtWriter.Write(rtbDoc.Text);
txtWriter.Close();
txtWriter = null;
rtbDoc.SelectionStart = 0;
rtbDoc.SelectionLength = 0;
}
currentFile = SaveFileDialog1.FileName;
rtbDoc.Modified = false;
this.Text = "Editor: " currentFile.ToString();
MessageBox.Show(currentFile.ToString() " saved.", "File Save");
}
else
{
MessageBox.Show("Save File request cancelled by user.", "Cancelled");
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void ExitToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
if (rtbDoc.Modified == true)
{
System.Windows.Forms.DialogResult answer;
answer = MessageBox.Show("Save this document before closing?", "Unsaved Document", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (answer == System.Windows.Forms.DialogResult.Yes)
{
return;
}
else
{
rtbDoc.Modified = false;
Application.Exit();
}
}
else
{
rtbDoc.Modified = false;
Application.Exit();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void SelectAllToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
rtbDoc.SelectAll();
}
catch (Exception)
{
MessageBox.Show("Unable to select all document content.", "RTE - Select", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void CopyToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
rtbDoc.Copy();
}
catch (Exception)
{
MessageBox.Show("Unable to copy document content.", "RTE - Copy", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void CutToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
rtbDoc.Cut();
}
catch
{
MessageBox.Show("Unable to cut document content.", "RTE - Cut", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void PasteToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
rtbDoc.Paste();
}
catch
{
MessageBox.Show("Unable to copy clipboard content to document.", "RTE - Paste", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void SelectFontToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
if (!(rtbDoc.SelectionFont == null))
{
FontDialog1.Font = rtbDoc.SelectionFont;
}
else
{
FontDialog1.Font = null;
}
FontDialog1.ShowApply = true;
if (FontDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
rtbDoc.SelectionFont = FontDialog1.Font;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void FontColorToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
ColorDialog1.Color = rtbDoc.ForeColor;
if (ColorDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
rtbDoc.SelectionColor = ColorDialog1.Color;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void BoldToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
if (!(rtbDoc.SelectionFont == null))
{
System.Drawing.Font currentFont = rtbDoc.SelectionFont;
System.Drawing.FontStyle newFontStyle;
newFontStyle = rtbDoc.SelectionFont.Style ^ FontStyle.Bold;
rtbDoc.SelectionFont = new Font(currentFont.FontFamily, currentFont.Size, newFontStyle);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void ItalicToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
if (!(rtbDoc.SelectionFont == null))
{
System.Drawing.Font currentFont = rtbDoc.SelectionFont;
System.Drawing.FontStyle newFontStyle;
newFontStyle = rtbDoc.SelectionFont.Style ^ FontStyle.Italic;
rtbDoc.SelectionFont = new Font(currentFont.FontFamily, currentFont.Size, newFontStyle);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void UnderlineToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
if (!(rtbDoc.SelectionFont == null))
{
System.Drawing.Font currentFont = rtbDoc.SelectionFont;
System.Drawing.FontStyle newFontStyle;
newFontStyle = rtbDoc.SelectionFont.Style ^ FontStyle.Underline;
rtbDoc.SelectionFont = new Font(currentFont.FontFamily, currentFont.Size, newFontStyle);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void NormalToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
if (!(rtbDoc.SelectionFont == null))
{
System.Drawing.Font currentFont = rtbDoc.SelectionFont;
System.Drawing.FontStyle newFontStyle;
newFontStyle = FontStyle.Regular;
rtbDoc.SelectionFont = new Font(currentFont.FontFamily, currentFont.Size, newFontStyle);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void PageColorToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
ColorDialog1.Color = rtbDoc.BackColor;
if (ColorDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
rtbDoc.BackColor = ColorDialog1.Color;
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void mnuUndo_Click(object sender, System.EventArgs e)
{
try
{
if (rtbDoc.CanUndo)
{
rtbDoc.Undo();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void mnuRedo_Click(object sender, System.EventArgs e)
{
try
{
if (rtbDoc.CanRedo)
{
rtbDoc.Redo();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void LeftToolStripMenuItem_Click_1(object sender, System.EventArgs e)
{
try
{
rtbDoc.SelectionAlignment = HorizontalAlignment.Left;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void CenterToolStripMenuItem_Click_1(object sender, System.EventArgs e)
{
try
{
rtbDoc.SelectionAlignment = HorizontalAlignment.Center;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void RightToolStripMenuItem_Click_1(object sender, System.EventArgs e)
{
try
{
rtbDoc.SelectionAlignment = HorizontalAlignment.Right;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void AddBulletsToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
rtbDoc.BulletIndent = 10;
rtbDoc.SelectionBullet = true;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void RemoveBulletsToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
rtbDoc.SelectionBullet = false;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void mnuIndent0_Click(object sender, System.EventArgs e)
{
try
{
rtbDoc.SelectionIndent = 0;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void mnuIndent5_Click(object sender, System.EventArgs e)
{
try
{
rtbDoc.SelectionIndent = 5;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void mnuIndent10_Click(object sender, System.EventArgs e)
{
try
{
rtbDoc.SelectionIndent = 10;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void mnuIndent15_Click(object sender, System.EventArgs e)
{
try
{
rtbDoc.SelectionIndent = 15;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void mnuIndent20_Click(object sender, System.EventArgs e)
{
try
{
rtbDoc.SelectionIndent = 20;
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void FindToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
frmFind f = new frmFind(this);
f.Show();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void FindAndReplaceToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
frmReplace f = new frmReplace(this);
f.Show();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void PreviewToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
PrintPreviewDialog1.Document = PrintDocument1;
PrintPreviewDialog1.ShowDialog();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void PrintToolStripMenuItem_Click(object sender, System.EventArgs e)
{
try
{
PrintDialog1.Document = PrintDocument1;
if (PrintDialog1.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
PrintDocument1.Print();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void mnuPageSetup_Click(object sender, System.EventArgs e)
{
try
{
PageSetupDialog1.Document = PrintDocument1;
PageSetupDialog1.ShowDialog();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
private void InsertImageToolStripMenuItem_Click(object sender, System.EventArgs e)
{
OpenFileDialog1.Title = "RTE - Insert Image File";
OpenFileDialog1.DefaultExt = "rtf";
OpenFileDialog1.Filter = "Bitmap Files|*.bmp|JPEG Files|*.jpg|GIF Files|*.gif";
OpenFileDialog1.FilterIndex = 1;
OpenFileDialog1.ShowDialog();
if (OpenFileDialog1.FileName == "")
{
return;
}
try
{
string strImagePath = OpenFileDialog1.FileName;
Image img;
img = Image.FromFile(strImagePath);
Clipboard.SetDataObject(img);
DataFormats.Format df;
df = DataFormats.GetFormat(DataFormats.Bitmap);
if (this.rtbDoc.CanPaste(df))
{
this.rtbDoc.Paste(df);
}
}
catch
{
MessageBox.Show("Unable to insert image format selected.", "RTE - Paste", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void rtbDoc_SelectionChanged(object sender, EventArgs e)
{
tbrBold.Checked = rtbDoc.SelectionFont.Bold;
tbrItalic.Checked = rtbDoc.SelectionFont.Italic;
tbrUnderline.Checked = rtbDoc.SelectionFont.Underline;
}
#endregion
#region Toolbar Methods
private void tbrSave_Click(object sender, System.EventArgs e)
{
SaveToolStripMenuItem_Click(this, e);
}
private void tbrOpen_Click(object sender, System.EventArgs e)
{
OpenToolStripMenuItem_Click(this, e);
}
private void tbrNew_Click(object sender, System.EventArgs e)
{
NewToolStripMenuItem_Click(this, e);
}
private void tbrBold_Click(object sender, System.EventArgs e)
{
BoldToolStripMenuItem_Click(this, e);
}
private void tbrItalic_Click(object sender, System.EventArgs e)
{
ItalicToolStripMenuItem_Click(this, e);
}
private void tbrUnderline_Click(object sender, System.EventArgs e)
{
UnderlineToolStripMenuItem_Click(this, e);
}
private void tbrFont_Click(object sender, System.EventArgs e)
{
SelectFontToolStripMenuItem_Click(this, e);
}
private void tbrLeft_Click(object sender, System.EventArgs e)
{
rtbDoc.SelectionAlignment = HorizontalAlignment.Left;
}
private void tbrCenter_Click(object sender, System.EventArgs e)
{
rtbDoc.SelectionAlignment = HorizontalAlignment.Center;
}
private void tbrRight_Click(object sender, System.EventArgs e)
{
rtbDoc.SelectionAlignment = HorizontalAlignment.Right;
}
private void tbrFind_Click(object sender, System.EventArgs e)
{
frmFind f = new frmFind(this);
f.Show();
}
private void tspColor_Click(object sender, EventArgs e)
{
FontColorToolStripMenuItem_Click(this, new EventArgs());
}
#endregion
#region Printing
private void PrintDocument1_BeginPrint(object sender, System.Drawing.Printing.PrintEventArgs e)
{
checkPrint = 0;
}
private void PrintDocument1_PrintPage(object sender, System.Drawing.Printing.PrintPageEventArgs e)
{
checkPrint = rtbDoc.Print(checkPrint, rtbDoc.TextLength, e);
if (checkPrint < rtbDoc.TextLength)
{
e.HasMorePages = true;
}
else
{
e.HasMorePages = false;
}
}
#endregion
#region Form Closing Handler
private void frmMain_FormClosing(object sender, FormClosingEventArgs e)
{
try
{
if (rtbDoc.Modified == true)
{
System.Windows.Forms.DialogResult answer;
answer = MessageBox.Show("Save current document before exiting?", "Unsaved Document", MessageBoxButtons.YesNo, MessageBoxIcon.Question);
if (answer == System.Windows.Forms.DialogResult.No)
{
rtbDoc.Modified = false;
rtbDoc.Clear();
return;
}
else
{
SaveToolStripMenuItem_Click(this, new EventArgs());
}
}
else
{
rtbDoc.Clear();
}
currentFile = "";
this.Text = "Editor: New Document";
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString(), "Error");
}
}
#endregion
}
}
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