Csharp/C Sharp by API/System.Windows.Forms/HelpProvider

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HelpProvider.HelpNamespace

<source lang="csharp">

using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; public class UseHelpProviderToLoadCHMFile : Form {

   public UseHelpProviderToLoadCHMFile()
   {
       this.listBox1 = new System.Windows.Forms.ListBox();
       this.checkBox1 = new System.Windows.Forms.CheckBox();
       this.helpProvider1 = new System.Windows.Forms.HelpProvider();
       this.SuspendLayout();
       this.listBox1.FormattingEnabled = true;
       this.listBox1.Location = new System.Drawing.Point(12, 12);
       this.listBox1.Size = new System.Drawing.Size(155, 134);
       this.checkBox1.AutoSize = true;
       this.helpProvider1.SetHelpNavigator(this.checkBox1, System.Windows.Forms.HelpNavigator.TableOfContents);
       this.checkBox1.Location = new System.Drawing.Point(194, 36);
       this.helpProvider1.SetShowHelp(this.checkBox1, true);
       this.checkBox1.Size = new System.Drawing.Size(80, 17);
       this.checkBox1.UseVisualStyleBackColor = true;
       this.helpProvider1.HelpNamespace = "C:\\YourFile.chm";
       this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
       this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
       this.ClientSize = new System.Drawing.Size(292, 169);
       this.Controls.Add(this.checkBox1);
       this.Controls.Add(this.listBox1);
       this.helpProvider1.SetHelpNavigator(this, System.Windows.Forms.HelpNavigator.TableOfContents);
       this.helpProvider1.SetShowHelp(this, true);
       this.ResumeLayout(false);
       this.PerformLayout();
   }
   [STAThread]
   public static void Main(string[] args)
   {
       Application.Run(new UseHelpProviderToLoadCHMFile());
   }
   private System.Windows.Forms.ListBox listBox1;
   private System.Windows.Forms.CheckBox checkBox1;
   private System.Windows.Forms.HelpProvider helpProvider1;
   

}

 </source>


HelpProvider.SetHelpNavigator

<source lang="csharp">

using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; public class UseHelpProviderToLoadCHMFile : Form {

   public UseHelpProviderToLoadCHMFile()
   {
       this.listBox1 = new System.Windows.Forms.ListBox();
       this.checkBox1 = new System.Windows.Forms.CheckBox();
       this.helpProvider1 = new System.Windows.Forms.HelpProvider();
       this.SuspendLayout();
       this.listBox1.FormattingEnabled = true;
       this.listBox1.Location = new System.Drawing.Point(12, 12);
       this.listBox1.Size = new System.Drawing.Size(155, 134);
       this.checkBox1.AutoSize = true;
       this.helpProvider1.SetHelpNavigator(this.checkBox1, System.Windows.Forms.HelpNavigator.TableOfContents);
       this.checkBox1.Location = new System.Drawing.Point(194, 36);
       this.helpProvider1.SetShowHelp(this.checkBox1, true);
       this.checkBox1.Size = new System.Drawing.Size(80, 17);
       this.checkBox1.UseVisualStyleBackColor = true;
       this.helpProvider1.HelpNamespace = "C:\\YourFile.chm";
       this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
       this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
       this.ClientSize = new System.Drawing.Size(292, 169);
       this.Controls.Add(this.checkBox1);
       this.Controls.Add(this.listBox1);
       this.helpProvider1.SetHelpNavigator(this, System.Windows.Forms.HelpNavigator.TableOfContents);
       this.helpProvider1.SetShowHelp(this, true);
       this.ResumeLayout(false);
       this.PerformLayout();
   }
   [STAThread]
   public static void Main(string[] args)
   {
       Application.Run(new UseHelpProviderToLoadCHMFile());
   }
   private System.Windows.Forms.ListBox listBox1;
   private System.Windows.Forms.CheckBox checkBox1;
   private System.Windows.Forms.HelpProvider helpProvider1;
   

}

 </source>


HelpProvider.SetHelpString

<source lang="csharp"> /* User Interfaces in C#: Windows Forms and Custom Controls by Matthew MacDonald Publisher: Apress ISBN: 1590590457

  • /

using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; namespace PopupText {

   /// <summary>
   /// Summary description for PopupText.
   /// </summary>
   public class PopupText : System.Windows.Forms.Form
   {
       internal System.Windows.Forms.Button cmdDelete;
       internal System.Windows.Forms.Button cmdAdd;
       internal System.Windows.Forms.HelpProvider hlp;
       private System.Windows.Forms.Label label1;
       /// <summary>
       /// Required designer variable.
       /// </summary>
       private System.ruponentModel.Container components = null;
       public PopupText()
       {
           //
           // Required for Windows Form Designer support
           //
           InitializeComponent();
           //
           // TODO: Add any constructor code after InitializeComponent call
           //
       }
       /// <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.cmdDelete = new System.Windows.Forms.Button();
           this.cmdAdd = new System.Windows.Forms.Button();
           this.hlp = new System.Windows.Forms.HelpProvider();
           this.label1 = new System.Windows.Forms.Label();
           this.SuspendLayout();
           // 
           // cmdDelete
           // 
           this.cmdDelete.Location = new System.Drawing.Point(20, 68);
           this.cmdDelete.Name = "cmdDelete";
           this.cmdDelete.Size = new System.Drawing.Size(92, 20);
           this.cmdDelete.TabIndex = 3;
           this.cmdDelete.Text = "Delete";
           // 
           // cmdAdd
           // 
           this.cmdAdd.Location = new System.Drawing.Point(20, 16);
           this.cmdAdd.Name = "cmdAdd";
           this.cmdAdd.Size = new System.Drawing.Size(92, 20);
           this.cmdAdd.TabIndex = 2;
           this.cmdAdd.Text = "Add";
           // 
           // label1
           // 
           this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
           this.label1.Location = new System.Drawing.Point(48, 176);
           this.label1.Name = "label1";
           this.label1.Size = new System.Drawing.Size(208, 68);
           this.label1.TabIndex = 4;
           this.label1.Text = "Tab to a button and press F1.";
           // 
           // PopupText
           // 
           this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);
           this.ClientSize = new System.Drawing.Size(292, 266);
           this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                         this.label1,
                                                                         this.cmdDelete,
                                                                         this.cmdAdd});
           this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
           this.Name = "PopupText";
           this.Text = "PopupText";
           this.Load += new System.EventHandler(this.PopupText_Load);
           this.ResumeLayout(false);
       }
       #endregion
       /// <summary>
       /// The main entry point for the application.
       /// </summary>
       [STAThread]
       static void Main() 
       {
           Application.Run(new PopupText());
       }
       private void PopupText_Load(object sender, System.EventArgs e)
       {
           hlp.SetHelpString(cmdAdd, "Choose another item from the catalog.");
       hlp.SetHelpString(cmdDelete, "Delete the selected item from your order.");
       }
   }

}


 </source>