html制作一个textbox,HTMLTextBox

Introduction

This Rich Text Editor-style control comes from a reference of the "Body Editor" in

"New Message" dialog of Outlook Express.

As we know, although a RichTextBox control is already provided within .NET

Framework by Microsoft to display rich text for users,

it still lacks in some real Rich Editing works which are extremely desirable.

As a consequence, this control is right for the real editing work.

Inside HTMLTextBox

As a subclass of UserControl, HTMLTextBox mainly consists of two parts:

one ToolBar and one WebBrowser control.

How to enable the WebBrowser to be editable?

The WebBrowser will enter "Edit Mode" after performing the following code.

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webBrowserBody.Document.ExecCommand("EditMode", false, null);

How to overstrike your font

Perform the following code to enable the BOLD font on the selected characters.

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webBrowserBody.Document.ExecCommand("Bold", false, null);

All the operations in this control are executed by invoking the function

ExecCommand of WebBrowser.Document. For detailed info about ExecCommand,

please refer to Microsoft MSDN.

PS: As announced by Microsoft in Command Identifiers,

some of the Commands are mentioned to be no more applicable, however, they still work well.

Please do not rely it 100 percent, just give a shot!

About Optional Fonts

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foreach (FontFamily family in FontFamily.Families)

{

toolStripComboBoxName.Items.Add(family.Name);

}

All the optional fonts in this control are retrieved by means of the code above.

About Font Size

In HTML page, seven types of font size are applicable (from 1 to 7). And the

relationship between the HTML font size and the common font size is summarized

in the following table:HTML Font SizeCommon Font Size

18

210

312

414

518

624

736

To avoid confusion, the Common Font Size will display for users instead of

the HTML Font Size.

How to use HTMLTextBox

As a UserControl, HTMLTextBox is very convenient for your use. And I do not

override or expose too many properties or methods.

By far, it just has two public properties": Text and Images. If you want

more, you are free to add them by yourself for any purpose.

Text: to set or get more meaningful text, it is overridden.

get: return the entire HTML content including and

etc.

set: set any text value and display them in this control, meanwhile, the "/r/n" will be automatically translated into
.

Images: to get the unique directories of all the attached images

NOTE: the COM object "Microsoft HTML Object Library" will be referenced by HTMLTextBox.

About Sample

Email Sender Example

Before running Sample, the following code needs to be changed accordingly.

In lines 23 - 26 in MailSender.cs

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string host = "192.168.22.12";

int port = 25;

string userid = "jay.liu";

string password = "1111";

Loathsome BUG

The image inserted into the edit body cannot be resized, and no exception

will be thrown. For now, I have no idea about the reason or solution.

History

First Version (1/22/2007).