using System;
using System.Drawing;
using System.Windows.Forms;
using System.IO;
namespace WindowsFormsApp2
{
public partial class Form1 : Form
{
//文件名（包含绝对路径）。
private string fileName;
public Form1()
{
InitializeComponent();
}
/// <summary>
/// 选中的文本如果是粗体，就去除粗体设置，否则就设置粗体。
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void BtnBold_Click(object sender, EventArgs e)
{
Font oldFont;
Font newFont;
oldFont = this.RichTextBox1.SelectionFont;
if (oldFont.Bold)
newFont = new Font(oldFont, oldFont.Style & ~FontStyle.Bold);
else
newFont = new Font(oldFont, oldFont.Style | FontStyle.Bold);
this.RichTextBox1.SelectionFont = newFont;
this.RichTextBox1.Focus();
}
private void BtnUnderline_Click(object sender, EventArgs e)
{
Font newFont;
Font oldFont = this.RichTextBox1.SelectionFont;
if (oldFont.Underline)
newFont = new Font(oldFont, oldFont.Style & ~FontStyle.Underline);
else
newFont = new Font(oldFont, oldFont.Style | FontStyle.Underline);
this.RichTextBox1.SelectionFont = newFont;
this.RichTextBox1.Focus();
}
private void BtnItalic_Click(object sender, EventArgs e)
{
Font oldFont;
Font newFont;
oldFont = this.RichTextBox1.SelectionFont;
if (oldFont.Italic)
newFont = new Font(oldFont, oldFont.Style & ~FontStyle.Italic);
else
newFont = new Font(oldFont, oldFont.Style | FontStyle.Italic);
this.RichTextBox1.SelectionFont = newFont;
this.RichTextBox1.Focus();
}
private void BtnCenter_Click(object sender, EventArgs e)
{
if (this.RichTextBox1.SelectionAlignment == HorizontalAlignment.Center)
this.RichTextBox1.SelectionAlignment = HorizontalAlignment.Left;
else
this.RichTextBox1.SelectionAlignment = HorizontalAlignment.Center;
this.RichTextBox1.Focus();
}
private void TbxSize_KeyPress(object sender, KeyPressEventArgs e)
{
//如果不是数字键并且不是退格键并且不能是回车键时，则处理该事件。
if ((e.KeyChar < 48 || e.KeyChar > 57) && e.KeyChar != 8 && e.KeyChar != 13)
e.Handled = true;
else if (e.KeyChar == 13)
{
TextBox txt = (TextBox)sender;
if (txt.Text.Length > 0)
ApplayTextSize(txt.Text);
e.Handled = true;
//在处理事件属性后面有一条函数是有必要的。
this.RichTextBox1.Focus();
}
}
/// <summary>
/// 在进行完验证后引发该事件。
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void TbxSize_Validated(object sender, EventArgs e)
{
TextBox txt = (TextBox)sender;
ApplayTextSize(txt.Text);
this.RichTextBox1.Focus();
}
/// <summary>
/// 应用该文本输入字体大小。
/// </summary>
/// <param name="textSize">文本大小</param>
private void ApplayTextSize(string textSize)
{
float newSize = Convert.ToSingle(textSize);
FontFamily currentFontFamily = this.RichTextBox1.SelectionFont.FontFamily;
Font newFont = new Font(currentFontFamily, newSize);
this.RichTextBox1.SelectionFont = newFont;
this.RichTextBox1.Focus();
}
/// <summary>
/// 单击文本中的超链接时发生。
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void RichTextBox1_LinkClicked(object sender, LinkClickedEventArgs e)
{
System.Diagnostics.Process.Start(e.LinkText);
}
private void BtnLoad_Click(object sender, EventArgs e)
{
try
{
using (OpenFileDialog fileDialog = new OpenFileDialog())
{
fileDialog.Filter = "富文本格式文件(*.rtf)|*.rtf|所有文件|*.*";
if (fileDialog.ShowDialog() == DialogResult.OK)
{
fileName = fileDialog.FileName;
using (Stream s = fileDialog.OpenFile())
{
RichTextBox1.LoadFile(s, RichTextBoxStreamType.RichText);
}
}
}
}
catch (FileLoadException ex)
{
MessageBox.Show("格式不正确：" + ex.Message);
}
catch (FileNotFoundException ex)
{
MessageBox.Show("未找到文件：" + ex.Message);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void BtnSave_Click(object sender, EventArgs e)
{
try
{
using (SaveFileDialog fileDialog = new SaveFileDialog())
{
fileDialog.AddExtension = true;
fileDialog.Filter = "富文本文件|*.RTF";
if (!string.IsNullOrEmpty(fileName))
RichTextBox1.SaveFile(fileName);
else
{
if (fileDialog.ShowDialog() == DialogResult.OK)
RichTextBox1.SaveFile(fileDialog.FileName);
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
private void BtnClear_Click(object sender, EventArgs e)
{
Invoke(new Action(() => { RichTextBox1.Clear(); }));
}
}
}
namespace WindowsFormsApp2
{
partial class Form1
{
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.IContainer components = null;
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
/// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要修改
/// 使用代码编辑器修改此方法的内容。
/// </summary>
private void InitializeComponent()
{
this.BtnBold = new System.Windows.Forms.Button();
this.BtnUnderline = new System.Windows.Forms.Button();
this.BtnItalic = new System.Windows.Forms.Button();
this.BtnCenter = new System.Windows.Forms.Button();
this.label1 = new System.Windows.Forms.Label();
this.TbxSize = new System.Windows.Forms.TextBox();
this.RichTextBox1 = new System.Windows.Forms.RichTextBox();
this.BtnLoad = new System.Windows.Forms.Button();
this.BtnSave = new System.Windows.Forms.Button();
this.BtnClear = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// BtnBold
//
this.BtnBold.Anchor = System.Windows.Forms.AnchorStyles.Top;
this.BtnBold.Location = new System.Drawing.Point(62, 26);
this.BtnBold.Name = "BtnBold";
this.BtnBold.Size = new System.Drawing.Size(127, 27);
this.BtnBold.TabIndex = 0;
this.BtnBold.Text = "Bold";
this.BtnBold.UseVisualStyleBackColor = true;
this.BtnBold.Click += new System.EventHandler(this.BtnBold_Click);
//
// BtnUnderline
//
this.BtnUnderline.Anchor = System.Windows.Forms.AnchorStyles.Top;
this.BtnUnderline.Location = new System.Drawing.Point(211, 26);
this.BtnUnderline.Name = "BtnUnderline";
this.BtnUnderline.Size = new System.Drawing.Size(127, 27);
this.BtnUnderline.TabIndex = 0;
this.BtnUnderline.Text = "Underline";
this.BtnUnderline.UseVisualStyleBackColor = true;
this.BtnUnderline.Click += new System.EventHandler(this.BtnUnderline_Click);
//
// BtnItalic
//
this.BtnItalic.Anchor = System.Windows.Forms.AnchorStyles.Top;
this.BtnItalic.Location = new System.Drawing.Point(360, 26);
this.BtnItalic.Name = "BtnItalic";
this.BtnItalic.Size = new System.Drawing.Size(127, 27);
this.BtnItalic.TabIndex = 0;
this.BtnItalic.Text = "Italic";
this.BtnItalic.UseVisualStyleBackColor = true;
this.BtnItalic.Click += new System.EventHandler(this.BtnItalic_Click);
//
// BtnCenter
//
this.BtnCenter.Anchor = System.Windows.Forms.AnchorStyles.Top;
this.BtnCenter.Location = new System.Drawing.Point(509, 26);
this.BtnCenter.Name = "BtnCenter";
this.BtnCenter.Size = new System.Drawing.Size(127, 27);
this.BtnCenter.TabIndex = 0;
this.BtnCenter.Text = "Center";
this.BtnCenter.UseVisualStyleBackColor = true;
this.BtnCenter.Click += new System.EventHandler(this.BtnCenter_Click);
//
// label1
//
this.label1.Anchor = System.Windows.Forms.AnchorStyles.Top;
this.label1.AutoSize = true;
this.label1.Location = new System.Drawing.Point(185, 76);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(87, 15);
this.label1.TabIndex = 1;
this.label1.Text = "LabelSize:";
//
// TbxSize
//
this.TbxSize.Anchor = System.Windows.Forms.AnchorStyles.Top;
this.TbxSize.Location = new System.Drawing.Point(272, 73);
this.TbxSize.Name = "TbxSize";
this.TbxSize.Size = new System.Drawing.Size(207, 25);
this.TbxSize.TabIndex = 2;
this.TbxSize.Text = "10";
this.TbxSize.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.TbxSize_KeyPress);
this.TbxSize.Validated += new System.EventHandler(this.TbxSize_Validated);
//
// RichTextBox1
//
this.RichTextBox1.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.RichTextBox1.Location = new System.Drawing.Point(36, 116);
this.RichTextBox1.Name = "RichTextBox1";
this.RichTextBox1.Size = new System.Drawing.Size(647, 174);
this.RichTextBox1.TabIndex = 3;
this.RichTextBox1.Text = "";
this.RichTextBox1.LinkClicked += new System.Windows.Forms.LinkClickedEventHandler(this.RichTextBox1_LinkClicked);
//
// BtnLoad
//
this.BtnLoad.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
this.BtnLoad.Location = new System.Drawing.Point(283, 326);
this.BtnLoad.Name = "BtnLoad";
this.BtnLoad.Size = new System.Drawing.Size(127, 27);
this.BtnLoad.TabIndex = 0;
this.BtnLoad.Text = "Load";
this.BtnLoad.UseVisualStyleBackColor = true;
this.BtnLoad.Click += new System.EventHandler(this.BtnLoad_Click);
//
// BtnSave
//
this.BtnSave.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
this.BtnSave.Location = new System.Drawing.Point(457, 326);
this.BtnSave.Name = "BtnSave";
this.BtnSave.Size = new System.Drawing.Size(127, 27);
this.BtnSave.TabIndex = 0;
this.BtnSave.Text = "Save";
this.BtnSave.UseVisualStyleBackColor = true;
this.BtnSave.Click += new System.EventHandler(this.BtnSave_Click);
//
// BtnClear
//
this.BtnClear.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
this.BtnClear.Location = new System.Drawing.Point(117, 326);
this.BtnClear.Name = "BtnClear";
this.BtnClear.Size = new System.Drawing.Size(127, 27);
this.BtnClear.TabIndex = 0;
this.BtnClear.Text = "Clear Text";
this.BtnClear.UseVisualStyleBackColor = true;
this.BtnClear.Click += new System.EventHandler(this.BtnClear_Click);
//
// Form1
//
this.AutoScaleDimensions = new System.Drawing.SizeF(8F, 15F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(716, 409);
this.Controls.Add(this.RichTextBox1);
this.Controls.Add(this.TbxSize);
this.Controls.Add(this.label1);
this.Controls.Add(this.BtnCenter);
this.Controls.Add(this.BtnItalic);
this.Controls.Add(this.BtnUnderline);
this.Controls.Add(this.BtnClear);
this.Controls.Add(this.BtnSave);
this.Controls.Add(this.BtnLoad);
this.Controls.Add(this.BtnBold);
this.MinimumSize = new System.Drawing.Size(734, 456);
this.Name = "Form1";
this.Text = "Form1";
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.Button BtnBold;
private System.Windows.Forms.Button BtnUnderline;
private System.Windows.Forms.Button BtnItalic;
private System.Windows.Forms.Button BtnCenter;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.TextBox TbxSize;
private System.Windows.Forms.RichTextBox RichTextBox1;
private System.Windows.Forms.Button BtnLoad;
private System.Windows.Forms.Button BtnSave;
private System.Windows.Forms.Button BtnClear;
}
}
