[英]C# Web browser control is not updating correctly
我目前正在開發一個與使用動態內容的html頁面進行技術交互的應用程序。
我的問題是,當我嘗試將數據附加到WBC時,內容未正確更新。
namespace CheckList
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
.... code removed ....
private void button2_Click(object sender, EventArgs e)
{
if (textBox1.Text != null)
{
HtmlDocument doc = webBrowser1.Document;
HtmlElement row = doc.CreateElement("tr");
HtmlElement cell1 = doc.CreateElement("td");
HtmlElement cell2 = doc.CreateElement("td");
cell1.InnerHtml = "[X] " + textBox1.Text;
cell2.SetAttribute("class", "solved_2");
cell2.InnerHtml = "Unsolved";
row.AppendChild(cell1);
row.AppendChild(cell2);
doc.GetElementsByTagName("table")[0].AppendChild(row);
//doc.Write(doc.GetElementsByTagName("HTML")[0].OuterHtml);
webBrowser1.Document.Body.InnerHtml = doc.Body.InnerHtml;
}
}
}
}
目前發生的是,我點擊“添加”它應該將html添加到頁面並更新和javascript以及仍然應該加載的內容。
發生的事情是它添加了內容,但是在我嘗試重新加載內容后,javascript無法正常工作。 雖然CSS保持機智,但在此之后javascript無法正常工作。
JS資料來源:
var showalert = true;
var file = "file:///C:/Users/Removed/Documents/Visual Studio 2010/Projects/CheckList/CheckList/bin/Release/";
initiate_instance();
function initiate_instance() {
//insert
$.get(file + "saved.html", function(data) {
//$("table#items").append("<tr><th width='70%'>Issue</th><th width='30%' class='right'>Solved</th></tr>");
$("table#items").html($("table#items").html() + data);
});
//change [X] into a link
$("table#items tr td").each(function() {
$(this).html($(this).html().replace("[X]", "<a onclick='return remove(this)' href='#'>[X]</a>"));
});
//change the css
$("table#items tr:odd").attr("class", "odd");
$("table#items tr td:eq(0)").attr("width", "70%");
$("table#items tr td:eq(1)").attr("width", "30%");
$("td.solved, td.solved_2").click(function() {
if($(this).attr("class") == "solved") {
$(this).attr("class", "solved_2");
$(this).text("Unsolved");
} else {
$(this).attr("class", "solved");
$(this).text("Solved");
}
if(showalert == true) {
alert("Remember, for these changes to keep effect please save before closing the program.");
showalert = false;
}
});
}
//delete rows
function remove(obj) {
if(showalert == true) {
alert("Remember, for these changes to keep effect please save before closing the program.");
showalert = false;
}
$(obj).parent().parent().remove();
return false;
}
TL; DR:您是否嘗試將“ AllowNavigation”設置為true?
如果您需要阻止導航,但仍需要更新頁面,我發現工作方法需要:
Document
, DomDocument
, Document.Body
等) 碼:
namespace CheckList
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
// Initialize all the document objects
webBrowser1.DocumentText = @"<html></html>";
// Add the Document Completed event handler to turn off navigation
webBrowser1.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webBrowser1_DocumentCompleted);
}
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
// Load default information via LoadHtml(string html);
LoadHtml(@"<html><head></head><body>Text!<script type='text/javascript' language='javascript'>alert('Aha!');</script></body></html>");
}
private void LoadHtml(string html)
{
webBrowser1.AllowNavigation = true;
// This will trigger a Document Completed event
webBrowser1.DocumentText = html;
}
private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
// Prevent further navigation
webBrowser1.AllowNavigation = false;
// Clean-up the handler if no longer needed
}
private void button2_Click(object sender, EventArgs e)
{
// Do your document building
LoadHtml(doc.Body.Parent.OuterHtml);
}
}
}
我發現這樣做:
OnDocumentCompleted
觸發之前立即執行)
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