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[英]How to click button or submit form or click url or click image on C# 4.0 WPF webbrowser application
[英]C# WebBrowser click submit button with no response
這是我第一次在StackOverflow上提問,我將盡我所能。
當我使用Chrome,Firefox和IE打開網站時,在選擇要上傳/升級到服務器(我的路由器)的文件后,提交按鈕“ upgrade ”可以正常工作。
但是,當我使用“ WebBrowser ”組件在C#Winform項目上嘗試使用它時,無論是手動單擊按鈕還是編寫C#代碼來觸發提交按鈕 , 提交按鈕都不會響應 ( 在選擇文件后 )。 onClick事件。
有人有線索嗎? 任何幫助將不勝感激,謝謝!
PS:很抱歉,由於我目前在一家公司工作,因此無法提供有關該網頁的大量圖片。
該網頁的html代碼如下所示:
<table>
<td>
<label class="subtt2" style="margin-bottom:8px;font-size:14px">
Software Image:
</label>
</td>
<td>
<div class="file-box">
<input id="firmware" name="fupgrade.bin" class="file"
onchange="getfileName()" type="file" style="cursor:pointer">
<input id="filename" class="txt" type="text">
<input class="btnWtn" value="Browse" type="button">
<label class="error" id="lupgradeforbidden" style="display: none"></label>
</div>
</td>
</table>
<div class="buttonStyle" align="left">
<input name="UPLOAD_ACTION" id="UPLOAD_ACTION" value="Upgrade"
onclick="upgradeRouter()" type="button">
</div>
upgradeRouter()
如下:
function upgradeRouter()
{
var FIRMWARE = document.getElementById( "firmware" );
var UPLOAD_ACTION = document.getElementById( "upload_action" );
if( FIRMWARE.value == "" )
alert( "Please select firmware file" );
else
{
fileSize = FIRMWARE.files.item(0).size;
if(fileSize > 0)
{
if( uploading == 0 )
{
document.forms["myForm"].submit();
setTimeout("firmware_update_query_request();", POLLING_FW_STATUS_SECONDS*1000);
document.getElementById('upgradeFrame').style.display = 'none';
document.getElementById('upgradeModalBox').style.display = 'block';
UPLOAD_ACTION.value = "Cancel";
uploading = 1;
}
else
{
uploading = 0;
UPLOAD_ACTION.value = "Update";
myForm.reset();
}
}
}
return false;
}
由於fileSize = FIRMWARE.files.item(0).size;
崩潰(導致沒有響應就單擊升級按鈕),針對我的問題的解決方法是將腳本注入到網頁中, upgradeRouter()
再次執行我的upgradeRouter()
版本。
我事先手動設置了fileSize
的值。
注入代碼如下所示
public void InjectScript()
{
HtmlElement headElement = webBrowser1.Document.GetElementsByTagName("head")[0];
HtmlElement scriptElement = webBrowser1.Document.CreateElement("script");
IHTMLScriptElement element = (IHTMLScriptElement)scriptElement.DomElement;
element.text = "function upgradeRouter_M()" +
"{ " +
"var FIRMWARE = document.getElementById(\"firmware\"); " +
"var UPLOAD_ACTION = document.getElementById(\"upload_action\");" +
" if (FIRMWARE.value == \"\")" +
" alert(\"Please select firmware file\");" +
" else" +
"{" +
"fileSize = 47599364;" +
"" +
"if (fileSize > 0)" +
"{" +
"if (uploading == 0)" +
"{" +
"document.forms[\"myForm\"].submit();" +
"setTimeout(\"firmware_update_query_request();\", POLLING_FW_STATUS_SECONDS * 1000);" +
"document.getElementById('upgradeFrame').style.display = 'none';" +
"document.getElementById('upgradeModalBox').style.display = 'block';" +
"UPLOAD_ACTION.value = \"Cancel\";" +
"uploading = 1;" +
"}" +
"else" +
"{" +
"uploading = 0;" +
"UPLOAD_ACTION.value = \"Update\";" +
"myForm.reset();" +
"}" +
"}" +
"}" +
"}";
headElement.AppendChild(scriptElement);
webBrowser1.Document.InvokeScript("upgradeRouter_M");
Console.WriteLine("Injection completed");
}
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