C# HelpProvider.SetHelpString方法代码示例

//引入命名空间
using System;
using System.Drawing;
using System.Windows.Forms;

public class Form1 : System.Windows.Forms.Form
{
    private System.Windows.Forms.TextBox addressTextBox;
    private System.Windows.Forms.Label label2;
    private System.Windows.Forms.TextBox cityTextBox;
    private System.Windows.Forms.Label label3;
    private System.Windows.Forms.TextBox stateTextBox;
    private System.Windows.Forms.TextBox zipTextBox;
    private System.Windows.Forms.HelpProvider helpProvider1;
    private System.Windows.Forms.Label helpLabel;

    [STAThread]
    static void Main() 
    {
        Application.Run(new Form1());
    }

    public Form1()
    {
        this.addressTextBox = new System.Windows.Forms.TextBox();
        this.helpLabel = new System.Windows.Forms.Label();
        this.label2 = new System.Windows.Forms.Label();
        this.cityTextBox = new System.Windows.Forms.TextBox();
        this.label3 = new System.Windows.Forms.Label();
        this.stateTextBox = new System.Windows.Forms.TextBox();
        this.zipTextBox = new System.Windows.Forms.TextBox();
        
        // Help Label
        this.helpLabel.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
        this.helpLabel.Location = new System.Drawing.Point(8, 80);
        this.helpLabel.Size = new System.Drawing.Size(272, 72);
        this.helpLabel.Text = "Click the Help button in the title bar, then click a control " + 
            "to see a Help tooltip for the control.  Click on a control and press F1 to invoke " +
            "the Help system with a sample Help file.";

        // Address Label
        this.label2.Location = new System.Drawing.Point(16, 8);
        this.label2.Size = new System.Drawing.Size(100, 16);
        this.label2.Text = "Address:";

        // Comma Label
        this.label3.Location = new System.Drawing.Point(136, 56);
        this.label3.Size = new System.Drawing.Size(16, 16);
        this.label3.Text = ",";

        // Create the HelpProvider.
        this.helpProvider1 = new System.Windows.Forms.HelpProvider();

        // Tell the HelpProvider what controls to provide help for, and
        // what the help string is.
        this.helpProvider1.SetShowHelp(this.addressTextBox, true);
        this.helpProvider1.SetHelpString(this.addressTextBox, "Enter the street address in this text box.");

        this.helpProvider1.SetShowHelp(this.cityTextBox, true);
        this.helpProvider1.SetHelpString(this.cityTextBox, "Enter the city here.");

        this.helpProvider1.SetShowHelp(this.stateTextBox, true);
        this.helpProvider1.SetHelpString(this.stateTextBox, "Enter the state in this text box.");

        this.helpProvider1.SetShowHelp(this.zipTextBox, true);
        this.helpProvider1.SetHelpString(this.zipTextBox, "Enter the zip code here.");

        // Set what the Help file will be for the HelpProvider.
        this.helpProvider1.HelpNamespace = "mspaint.chm";

        // Sets properties for the different address fields.

        // Address TextBox
        this.addressTextBox.Location = new System.Drawing.Point(16, 24);
        this.addressTextBox.Size = new System.Drawing.Size(264, 20);
        this.addressTextBox.TabIndex = 0;
        this.addressTextBox.Text = "";

        // City TextBox
        this.cityTextBox.Location = new System.Drawing.Point(16, 48);
        this.cityTextBox.Size = new System.Drawing.Size(120, 20);
        this.cityTextBox.TabIndex = 3;
        this.cityTextBox.Text = "";

        // State TextBox
        this.stateTextBox.Location = new System.Drawing.Point(152, 48);
        this.stateTextBox.MaxLength = 2;
        this.stateTextBox.Size = new System.Drawing.Size(32, 20);
        this.stateTextBox.TabIndex = 5;
        this.stateTextBox.Text = "";

        // Zip TextBox
        this.zipTextBox.Location = new System.Drawing.Point(192, 48);
        this.zipTextBox.Size = new System.Drawing.Size(88, 20);
        this.zipTextBox.TabIndex = 6;
        this.zipTextBox.Text = "";

        // Add the controls to the form.
        this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                    this.zipTextBox, this.stateTextBox,
                                    this.label3, this.cityTextBox,
                                    this.label2, this.helpLabel,
                                    this.addressTextBox});

        // Set the form to look like a dialog, and show the HelpButton.    
        this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
        this.HelpButton = true;
        this.MaximizeBox = false;
        this.MinimizeBox = false;
        this.ClientSize = new System.Drawing.Size(292, 160);
        this.Text = "Help Provider Demonstration";
    }
}

/*
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.ComponentModel;
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.ComponentModel.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.");
        }
    }
}