[英]Editing HTML with a WYSIWYG Editor
I have a datagridview with HTML strings. 我有一个带HTML字符串的datagridview。 Using a CellDoubleClick event, I am displaying the html string in a WebBrowser control.
使用CellDoubleClick事件,我在WebBrowser控件中显示html字符串。
In Form1 在Form1中
private void dataGridView1_CellDoubleClick(object sender, DataGridViewCellEventArgs e)
{
try
{
if (e.ColumnIndex != 0 && e.RowIndex != -1)
{
string s = dataGridView1.Rows[e.RowIndex].Cells[e.ColumnIndex].Value.ToString();
this.f2 = new Form2(s);
f2.ShowDialog();
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "ERROR", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
In Form2 在Form2中
private IHTMLDocument2 doc;
string reply;
public Form2(string reply)
{
InitializeComponent();
this.reply = reply;
}
private void Form2_Load(object sender, EventArgs e)
{
webBrowser1.DocumentText = reply; <--- string from DataGridView
IHTMLTxtRange range = doc.selection.createRange() as IHTMLTxtRange;
range.pasteHTML(webBrowser1.DocumentText);
range.collapse(false);
range.select();
doc = webBrowser1.Document.DomDocument as IHTMLDocument2;
doc.designMode = "On";
}
Using the above code, I can successfully display the HTML string as a plaintext, however I am unable to edit it. 使用上面的代码,我可以成功地将HTML字符串显示为纯文本,但是我无法编辑它。 Alternatively, if I use this code:
或者,如果我使用此代码:
private IHTMLDocument2 doc;
private void Form2_Load(object sender, EventArgs e)
{
webBrowser1.DocumentText = reply; <--- string from DataGridView
doc = webBrowser1.Document.DomDocument as IHTMLDocument2;
doc.designMode = "On";
IHTMLTxtRange range = doc.selection.createRange() as IHTMLTxtRange;
range.pasteHTML(webBrowser1.DocumentText);
range.collapse(false);
range.select();
}
It will be a blank form, but I will be able to write to it. 这将是一个空白表格,但我可以写信给它。
I have a feeling it has to do with range.pasteHTML(webBrowser1.DocumentText);
我觉得它与
range.pasteHTML(webBrowser1.DocumentText);
being in the Form2_Load method, but I'm unaware of any other method that will allow me to display the HTML string from the DataGridView upon opening Form2. 在Form2_Load方法中,但我不知道任何其他方法将允许我在打开Form2时显示DataGridView中的HTML字符串。
I want to allow users to be able to edit the HTML string as plaintext (after which it will be converted back to HTML and displayed in the datagridview). 我想允许用户能够将HTML字符串编辑为纯文本(之后它将被转换回HTML并显示在datagridview中)。
Its possible! 这是可能的! You can edit HTML using the default
WebBrowser
control, 您可以使用默认的
WebBrowser
控件编辑HTML,
Add a reference to the "Microsoft.mshtml.dll" file, available here. 添加对此处提供的“Microsoft.mshtml.dll”文件的引用。
Assuming your WebBrowser is named "browser", add this code in the Form.Load event (browser.Document.DomDocument as mshtml.IHTMLDocument2).designMode = "On";
假设您的WebBrowser被命名为“browser”,请在Form.Load事件中添加此代码
(browser.Document.DomDocument as mshtml.IHTMLDocument2).designMode = "On";
Call the following functions to format the selected text: 调用以下函数以格式化所选文本:
browser.document.ExecCommand("Bold", false, null);
browser.document.ExecCommand("Underline", false, null);
browser.document.ExecCommand("Italics", false, null);
browser.document.ExecCommand("StrikeThrough", false, null);
browser.document.ExecCommand("FontName", false, "Times New Roman");
browser.document.ExecCommand("FontName", false, "Arial");
browser.document.ExecCommand("FontName", false, "etc.");
browser.document.ExecCommand("FontSize", false, "1");
browser.document.ExecCommand("FontSize", false, "2");
browser.document.ExecCommand("FontSize", false, "3");
browser.document.ExecCommand("InsertUnorderedList", false, null);
browser.document.ExecCommand("InsertOrderedList", false, null);
browser.document.ExecCommand("Cut", false, null);
browser.document.ExecCommand("Copy", false, null);
browser.document.ExecCommand("Paste", false, null);
browser.document.ExecCommand("CreateLink", true, null);
The
WebBrowser
control does not allow editing, and is designed to view web pages only.
WebBrowser
控件不允许编辑,仅用于查看网页。
Its actually the Internet Explorer/Trident rendering engine operating behind the scenes that parses the HTML and renders the final page complete with DOM/JS support.
它实际上是在幕后操作的Internet Explorer / Trident渲染引擎,它解析HTML并使用DOM / JS支持完成最终页面。
No popular browser supports editing of HTML pages, IMO, and neither does IE.
没有流行的浏览器支持编辑HTML页面,IMO,IE也不支持。
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