font property of richtextbox

Question

i made a program in which there is a checkbox which when checked it will change the property of a richtextbox to bold
in which i created a new style with bold and given it to richtextbox property when checked in check box
can anyone please tell me how i can reset it to normal font when i uncheck the checkbox

thanking u
rahul m

Master Billa · Answer

HI Here complete code last time i used to my project Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:Table Normal; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:Calibrisans-serif; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:Times New Roman; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin;} using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.IO; using System.Drawing.Text; namespace CGDemo { public class Form1 : Form { private System.Windows.Forms.RichTextBox richTextBox1; private System.Windows.Forms.ToolStrip toolStrip1; private System.Windows.Forms.ToolStripButton cmdUnderline; private System.Windows.Forms.ToolStripButton cmdBold; private System.Windows.Forms.ToolStripButton cmdItalic; private System.Windows.Forms.ToolStripSeparator toolStripSeparator1; private System.Windows.Forms.ToolStripDropDownButton lstColors; private System.Windows.Forms.ToolStripDropDownButton lstFonts; private System.Windows.Forms.ToolStripDropDownButton lstZoom; private System.Windows.Forms.ToolStripDropDownButton lstFontSize; private System.Windows.Forms.ToolStripSeparator toolStripSeparator2; private System.Windows.Forms.Button cmdAddImage; public Form1() { InitializeComponent(); } private void richTextBox1_SelectionChanged(object sender EventArgs e) { if (richTextBox1.SelectionFont != null ) { cmdBold.Checked = richTextBox1.SelectionFont.Bold; cmdItalic.Checked = richTextBox1.SelectionFont.Italic; cmdUnderline.Checked = richTextBox1.SelectionFont.Underline; } } private void cmdBold_Click(object sender EventArgs e) { if (richTextBox1.SelectionFont == null ) { return ; } FontStyle style = richTextBox1.SelectionFont.Style; if (richTextBox1.SelectionFont.Bold) { style &= ~FontStyle.Bold; } else { style |= FontStyle.Bold; } richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont style); } private void cmdItalic_Click(object sender EventArgs e) { if (richTextBox1.SelectionFont == null ) { return ; } FontStyle style = richTextBox1.SelectionFont.Style; if (richTextBox1.SelectionFont.Italic) { style &= ~FontStyle.Italic; } else { style |= FontStyle.Italic; } richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont style); } private void cmdUnderline_Click(object sender EventArgs e) { if (richTextBox1.SelectionFont == null ) { return ; } FontStyle style = richTextBox1.SelectionFont.Style; if (richTextBox1.SelectionFont.Underline) { style &= ~FontStyle.Underline; } else { style |= FontStyle.Underline; } richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont style); } private void Form1_Load(object sender EventArgs e) { lstColors.DropDown.Items.Add( Red ); lstColors.DropDown.Items.Add( Blue ); InstalledFontCollection fonts = new InstalledFontCollection(); foreach (FontFamily family in fonts.Families) { lstFonts.DropDown.Items.Add(family.Name); } lstZoom.DropDown.Items.Add( 300% ); lstZoom.DropDown.Items.Add( 200% ); lstZoom.DropDown.Items.Add( 100% ); lstFontSize.DropDown.Items.Add( 8 ); lstFontSize.DropDown.Items.Add( 10 ); lstFontSize.DropDown.Items.Add( 12 ); } private void lstColors_DropDownItemClicked(object sender ToolStripItemClickedEventArgs e) { KnownColor selectedColor; selectedColor = (KnownColor)System.Enum.Parse(typeof(KnownColor) e.ClickedItem.Text); richTextBox1.SelectionColor = Color.FromKnownColor(selectedColor); } private void lstFonts_DropDownItemClicked(object sender ToolStripItemClickedEventArgs e) { if (richTextBox1.SelectionFont == null ) { richTextBox1.SelectionFont = new Font(e.ClickedItem.Text richTextBox1.Font.Size); } richTextBox1.SelectionFont = new Font(e.ClickedItem.Text richTextBox1.SelectionFont.Size); } private void lstZoom_DropDownItemClicked(object sender ToolStripItemClickedEventArgs e) { float zoomPercent = Convert.ToSingle(e.ClickedItem.Text.Trim( '%' )); richTextBox1.ZoomFactor = zoomPercent / 100 ; } private void lstFontSize_DropDownItemClicked(object sender ToolStripItemClickedEventArgs e) { if (richTextBox1.SelectionFont == null ) { return ; } richTextBox1.SelectionFont = new Font(richTextBox1.SelectionFont.FontFamily Convert.ToInt32(e.ClickedItem.Text) richTextBox1.SelectionFont.Style); } private void cmdAddImage_Click(object sender EventArgs e) { Image img = Image.FromFile( winter.jpg ); Clipboard.SetImage(img); richTextBox1.SelectionStart = 0 ; richTextBox1.Paste(); Clipboard.Clear(); } private void InitializeComponent() { this .richTextBox1 = new System.Windows.Forms.RichTextBox(); this .toolStrip1 = new System.Windows.Forms.ToolStrip(); this .cmdBold = new System.Windows.Forms.ToolStripButton(); this .cmdItalic = new System.Windows.Forms.ToolStripButton(); this .cmdUnderline = new System.Windows.Forms.ToolStripButton(); this .toolStripSeparator1 = new System.Windows.Forms.ToolStripSeparator(); this .lstColors = new System.Windows.Forms.ToolStripDropDownButton(); this .lstFonts = new System.Windows.Forms.ToolStripDropDownButton(); this .lstFontSize = new System.Windows.Forms.ToolStripDropDownButton(); this .toolStripSeparator2 = new System.Windows.Forms.ToolStripSeparator(); this .lstZoom = new System.Windows.Forms.ToolStripDropDownButton(); this .cmdAddImage = new System.Windows.Forms.Button(); this .toolStrip1.SuspendLayout(); this .SuspendLayout(); // // 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.BulletIndent = 5 ; this .richTextBox1.Location = new System.Drawing.Point( 12  37 ); this .richTextBox1.Margin = new System.Windows.Forms.Padding( 5 ); this .richTextBox1.Name = richTextBox1 ; this .richTextBox1.Size = new System.Drawing.Size( 317  197 ); this .richTextBox1.TabIndex = 0 ; this .richTextBox1.Text = adfasdf ; this .richTextBox1.SelectionChanged += new System.EventHandler( this .richTextBox1_SelectionChanged); // // toolStrip1 // this .toolStrip1.Items.AddRange( new System.Windows.Forms.ToolStripItem[] { this .cmdBold this .cmdItalic this .cmdUnderline this .toolStripSeparator1 this .lstColors this .lstFonts this .lstFontSize this .toolStripSeparator2 this .lstZoom}); this .toolStrip1.Location = new System.Drawing.Point( 0  0 ); this .toolStrip1.Name = toolStrip1 ; this .toolStrip1.Size = new System.Drawing.Size( 341  25 ); this .toolStrip1.TabIndex = 1 ; this .toolStrip1.Text = toolStrip1 ; // // cmdBold // this .cmdBold.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text; this .cmdBold.ImageTransparentColor = System.Drawing.Color.Magenta; this .cmdBold.Name = cmdBold ; this .cmdBold.Size = new System.Drawing.Size( 31  22 ); this .cmdBold.Text = Bold ; this .cmdBold.Click += new System.EventHandler( this .cmdBold_Click); // // cmdItalic // this .cmdItalic.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text; this .cmdItalic.ImageTransparentColor = System.Drawing.Color.Magenta; this .cmdItalic.Name = cmdItalic ; this .cmdItalic.Size = new System.Drawing.Size( 34  22 ); this .cmdItalic.Text = Italic ; this .cmdItalic.Click += new System.EventHandler( this .cmdItalic_Click); // // cmdUnderline // this .cmdUnderline.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text; this .cmdUnderline.ImageTransparentColor = System.Drawing.Color.Magenta; this .cmdUnderline.Name = cmdUnderline ; this .cmdUnderline.Size = new System.Drawing.Size( 56  22 ); this .cmdUnderline.Text = Underline ; this .cmdUnderline.Click += new System.EventHandler( this .cmdUnderline_Click); // // toolStripSeparator1 // this .toolStripSeparator1.Name = toolStripSeparator1 ; this .toolStripSeparator1.Size = new System.Drawing.Size( 6  25 ); // // lstColors // this .lstColors.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text; this .lstColors.ImageTransparentColor = System.Drawing.Color.Magenta; this .lstColors.Name = lstColors ; this .lstColors.Size = new System.Drawing.Size( 45  22 ); this .lstColors.Text = Color ; this .lstColors.DropDownItemClicked += new System.Windows.Forms.ToolStripItemClickedEventHandler( this .lstColors_DropDownItemClicked); // // lstFonts // this .lstFonts.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text; this .lstFonts.ImageTransparentColor = System.Drawing.Color.Magenta; this .lstFonts.Name = lstFonts ; this .lstFonts.Size = new System.Drawing.Size( 42  22 ); this .lstFonts.Text = Font ; this .lstFonts.DropDownItemClicked += new System.Windows.Forms.ToolStripItemClickedEventHandler( this .lstFonts_DropDownItemClicked); // // lstFontSize // this .lstFontSize.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text; this .lstFontSize.ImageTransparentColor = System.Drawing.Color.Magenta; this .lstFontSize.Name = lstFontSize ; this .lstFontSize.Size = new System.Drawing.Size( 39  22 ); this .lstFontSize.Text = Size ; this .lstFontSize.DropDownItemClicked += new System.Windows.Forms.ToolStripItemClickedEventHandler( this .lstFontSize_DropDownItemClicked); // // toolStripSeparator2 // this .toolStripSeparator2.Name = toolStripSeparator2 ; this .toolStripSeparator2.Size = new System.Drawing.Size( 6  25 ); // // lstZoom // this .lstZoom.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Text; this .lstZoom.ImageTransparentColor = System.Drawing.Color.Magenta; this .lstZoom.Name = lstZoom ; this .lstZoom.Size = new System.Drawing.Size( 46  22 ); this .lstZoom.Text = Zoom ; this .lstZoom.DropDownItemClicked += new System.Windows.Forms.ToolStripItemClickedEventHandler( this .lstZoom_DropDownItemClicked); // // cmdAddImage // this .cmdAddImage.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Left))); this .cmdAddImage.Location = new System.Drawing.Point( 12  237 ); this .cmdAddImage.Name = cmdAddImage ; this .cmdAddImage.Size = new System.Drawing.Size( 154  23 ); this .cmdAddImage.TabIndex = 2 ; this .cmdAddImage.Text = Insert Image ; this .cmdAddImage.UseVisualStyleBackColor = true ; this .cmdAddImage.Click += new System.EventHandler( this .cmdAddImage_Click); // // Form1 // this .AutoScaleDimensions = new System.Drawing.SizeF( 6F  13F ); this .AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this .ClientSize = new System.Drawing.Size( 341  266 ); this .Controls.Add( this .cmdAddImage); this .Controls.Add( this .toolStrip1); this .Controls.Add( this .richTextBox1); this .Font = new System.Drawing.Font( Tahoma  8.25F  System.Drawing.FontStyle.Regular System.Drawing.GraphicsUnit.Point (( byte )( 0 ))); this .Name = Form1 ; this .Text = RichTextBox Test ; this .Load += new System.EventHandler( this .Form1_Load); this .toolStrip1.ResumeLayout( false ); this .toolStrip1.PerformLayout(); this .ResumeLayout( false ); this .PerformLayout(); } [STAThread] static void Main() { Application.EnableVisualStyles(); Application.Run( new Form1()); } } } Thank you