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Question

我有一個HTML表單是這樣的：

<input name="member[email]" id="memberemail" style="width: 220px;" type="text" value=""> 
<input name="member[password]" id="memberpassword" style="width: 220px;" type="password" value="" autocomplete="off"> 
<input class="continue" type="submit" value="Log In"> 

和我有一個驗證和瀏覽頁面的PowerShell腳本：這工作得很好。

$username='xxx@mail.com' 
$password='<password>' 




$ie = New-Object -ComObject 'internetExplorer.Application' 
$ie.Visible= $true 
$ie.Navigate("https://www.ksl.com/public/member/signin?login_forward=%2F") 


while ($ie.Busy -eq $true){Start-Sleep -seconds 1;} 

$usernamefield = $ie.Document.getElementByID('memberemail') 
$usernamefield.value = $username 

$passwordfield = $ie.Document.getElementByID('memberpassword') 
$passwordfield.value = $password 

$Link=$ie.Document.getElementsByTagName("input") | where-object {$_.className -eq "continue"} 



#<INPUT tabIndex=3 id=Logon onclick=this.disabled=true;this.form.submit(); type=submit value="Sign In"> 
#<input name="ctl00$pageContentPlaceHolder$btnGo" id="ctl00_pageContentPlaceHolder_btnGo" style="width: 200px;" type="submit" value="Sign In"> 


$Link.click() 

但是當我嘗試使用它ASP.net頁面這樣的：

<input name="ctl00$pageContentPlaceHolder$txtUserID" id="ctl00_pageContentPlaceHolder_txtUserID" style="width: 200px;" type="text" maxlength="30" autocomplete="off"> 
<input name="ctl00$pageContentPlaceHolder$txtPassword" id="ctl00_pageContentPlaceHolder_txtPassword" style="width: 200px;" type="password" maxlength="256" autocomplete="off"> 
<input name="ctl00$pageContentPlaceHolder$btnGo" id="ctl00_pageContentPlaceHolder_btnGo" style="width: 200px;" type="submit" value="Sign In"> 

這modiified腳本不填寫用戶名和密碼字段

$username='use000' 
$password='<password>' 


$ie = New-Object -ComObject 'internetExplorer.Application' 
$ie.Visible= $true 
#ie.Navigate("https://fasttrng.usask.ca/Login.aspx?ReturnUrl=%2f") 

while ($ie.Busy -eq $true){Start-Sleep -seconds 1;} 

$usernamefield = $ie.Document.getElementByName('ctl00$pageContentPlaceHolder$txtUserID') 
$usernamefield.value = $username 

$passwordfield = $ie.Document.getElementByName('ctl00$pageContentPlaceHolder$txtPassword') 
$passwordfield.value = $password 

$Link=$ie.Document.getElementsByTagName("input") | where-object {$_.id -eq "ctl00_pageContentPlaceHolder_btnGo"} 




$Link.click() 

我得到

PS C:\Users\rwm132> T:\work\scripts\Untitled4.ps1 

PS C:\Users\rwm132> T:\work\scripts\Untitled4.ps1 

PS C:\Users\rwm132> T:\work\scripts\Untitled5.ps1 
You cannot call a method on a null-valued expression. 
At T:\work\scripts\Untitled5.ps1:11 char:1 
+ $usernamefield = $ie.Document.getElementByName('ctl00$pageContentPlac ... 
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
    + CategoryInfo   : InvalidOperation: (:) [], RuntimeException 
    + FullyQualifiedErrorId : InvokeMethodOnNull 

The RPC server is unavailable. (Exception from HRESULT: 0x800706BA) 
At T:\work\scripts\Untitled5.ps1:12 char:1 
+ $usernamefield.value = $username 
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
    + CategoryInfo   : OperationStopped: (:) [], COMException 
    + FullyQualifiedErrorId : System.Runtime.InteropServices.COMException 

You cannot call a method on a null-valued expression. 
At T:\work\scripts\Untitled5.ps1:14 char:1 
+ $passwordfield = $ie.Document.getElementByName('ctl00$pageContentPlac ... 
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
    + CategoryInfo   : InvalidOperation: (:) [], RuntimeException 
    + FullyQualifiedErrorId : InvokeMethodOnNull 

The RPC server is unavailable. (Exception from HRESULT: 0x800706BA) 
At T:\work\scripts\Untitled5.ps1:15 char:1 
+ $passwordfield.value = $password 
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
    + CategoryInfo   : OperationStopped: (:) [], COMException 
    + FullyQualifiedErrorId : System.Runtime.InteropServices.COMException 

You cannot call a method on a null-valued expression. 
At T:\work\scripts\Untitled5.ps1:17 char:1 
+ $Link=$ie.Document.getElementsByTagName("input") | where-object {$_.i ... 
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 
    + CategoryInfo   : InvalidOperation: (:) [], RuntimeException 
    + FullyQualifiedErrorId : InvokeMethodOnNull 

The RPC server is unavailable. (Exception from HRESULT: 0x800706BA) 
At T:\work\scripts\Untitled5.ps1:22 char:1 
+ $Link.click() 
+ ~~~~~~~~~~~~~ 
    + CategoryInfo   : OperationStopped: (:) [], COMException 
    + FullyQualifiedErrorId : System.Runtime.InteropServices.COMException 


PS C:\Users\rwm132> 

Is there ASP.Net呈現的輸入字段有什麼特別之處？

Answer 1

該腳本適用於靜態HTML而不是ASP.Net有人建議它無法處理正在呈現的AJAX部分，這聽起來是對的嗎？我以爲在.NET中這樣的webforms是e