问题
I have seen couple of question posted on this topic but none of the solution worked that's why I am posting it again.
I am using WatIn to automate the testing of my website. Using IE 11. I have to download and save the file, but I am not able to click the save or saveas button of the download window. I tried FileDownloadHandler of WatIn but it didn't worked. I am not limited to WatIn only solutions. It could be anything thing which I can use in my C# code will be acceptable
FileDownloadHandler fileDownloadHandler = new FileDownloadHandler();
browser.AddDialogHandler(fileDownloadHandler);
browser.Image(Find.ByAlt("Download.Csv")).Ancestor("a").ClickNoWait();
fileDownloadHandler.WaitUntilFileDownloadDialogIsHandled(40);
fileDownloadHandler.WaitUntilDownloadCompleted(200);
回答1:
WatiN does not completely interact with Windows controls and help in windows is very little. I had the same problem in handling the windows controls as we had multiple versions of IE. IE 9.0 and higher have different file handling when compared to <= IE 8.0 version. The below works fine for IE 9.0 and higher. Please make sure proper references are added (refer using's).
using System.Threading;
using System.Windows.Automation;
using WatiN.Core;
using WatiN.Core.Native.Windows;
namespace TestFramework.Util
{
public static class WindowsHelper
{
#region Public Methods
/// <summary>
/// Download IE file.
/// </summary>
/// <param name="action">Action can be Save/Save As/Open/Cancel.</param>
/// <param name="path">Path where file needs to be saved (for Save As function).</param>
public static void DownloadIEFile(string action, string path = "", string regexPatternToMatch = "")
{
Browser browser = null;
if (Utility.Browser != null) // Utility.Browser is my WatiN browser instance.
{
if (string.IsNullOrEmpty(regexPatternToMatch))
{
browser = Utility.Browser;
}
else
{
Utility.Wait(() => (browser = Browser.AttachTo<IE>(Find.ByUrl(new System.Text.RegularExpressions.Regex(regexPatternToMatch)))) != null);
}
}
else
{
return;
}
// If doesn't work try to increase sleep interval or write your own waitUntill method
Thread.Sleep(3000);
// See information here (http://msdn.microsoft.com/en-us/library/windows/desktop/ms633515(v=vs.85).aspx)
Window windowMain = null;
Utility.Wait(() => (windowMain = new Window(NativeMethods.GetWindow(browser.hWnd, 5))).ProcessID != 0);
TreeWalker trw = new TreeWalker(Condition.TrueCondition);
AutomationElement mainWindow = trw.GetParent(AutomationElement.FromHandle(browser.hWnd));
Window windowDialog = null;
Utility.Wait(() => (windowDialog = new Window(NativeMethods.GetWindow(windowMain.Hwnd, 5))).ProcessID != 0);
windowDialog.SetActivate();
AutomationElementCollection amc = null;
Utility.Wait(() => (amc = AutomationElement.FromHandle(windowDialog.Hwnd).FindAll(TreeScope.Children, Condition.TrueCondition)).Count > 1);
foreach (AutomationElement element in amc)
{
// You can use "Save ", "Open", ''Cancel', or "Close" to find necessary button Or write your own enum
if (element.Current.Name.Equals(action))
{
// If doesn't work try to increase sleep interval or write your own waitUntil method
// WaitUntilButtonExsist(element,100);
Thread.Sleep(1000);
AutomationPattern[] pats = element.GetSupportedPatterns();
// Replace this for each if you need 'Save as' with code bellow
foreach (AutomationPattern pat in pats)
{
// '10000' button click event id
if (pat.Id == 10000)
{
InvokePattern click = (InvokePattern)element.GetCurrentPattern(pat);
click.Invoke();
}
}
}
else if (element.Current.Name.Equals("Save") && action == "Save As")
{
AutomationElementCollection bmc = element.FindAll(TreeScope.Children, Automation.ControlViewCondition);
InvokePattern click1 = (InvokePattern)bmc[0].GetCurrentPattern(AutomationPattern.LookupById(10000));
click1.Invoke();
Thread.Sleep(1000);
AutomationElementCollection main = mainWindow.FindAll(TreeScope.Children, Condition.TrueCondition);
foreach (AutomationElement el in main)
{
if (el.Current.LocalizedControlType == "menu")
{
// First array element 'Save', second array element 'Save as', third second array element 'Save and open'
InvokePattern clickMenu = (InvokePattern)
el.FindAll(TreeScope.Children, Condition.TrueCondition)[1].GetCurrentPattern(AutomationPattern.LookupById(10000));
clickMenu.Invoke();
Thread.Sleep(1000);
ControlSaveDialog(mainWindow, path);
break;
}
}
}
}
}
/// <summary>
/// Control for save dialog.
/// </summary>
/// <param name="mainWindow">Main window.</param>
/// <param name="path">Path.</param>
private static void ControlSaveDialog(AutomationElement mainWindow, string path)
{
// Obtain the save as dialog
var saveAsDialog = mainWindow
.FindFirst(TreeScope.Descendants,
new PropertyCondition(AutomationElement.NameProperty, "Save As"));
// Get the file name box
var saveAsText = saveAsDialog
.FindFirst(TreeScope.Descendants,
new AndCondition(
new PropertyCondition(AutomationElement.NameProperty, "File name:"),
new PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Edit)))
.GetCurrentPattern(ValuePattern.Pattern) as ValuePattern;
// Fill the filename box
saveAsText.SetValue(path);
Thread.Sleep(500);
Utility.PressKey("LEFT");
Utility.PressKey("LEFT");
Thread.Sleep(1000);
// Find the save button
var saveButton =
saveAsDialog.FindFirst(TreeScope.Descendants,
new AndCondition(
new PropertyCondition(AutomationElement.NameProperty, "Save"),
new PropertyCondition(AutomationElement.ControlTypeProperty, ControlType.Button)));
// Invoke the button
var pattern = saveButton.GetCurrentPattern(InvokePattern.Pattern) as InvokePattern;
pattern.Invoke();
}
#endregion
}
}
public static class Utility
{
public static IE Browser { get; set; }
// Wait specified number of seconds
public static void Wait(int seconds)
{
System.Threading.Thread.Sleep(seconds * 1000);
}
// Wait for condition to evaluate true, timeout after 30 seconds
public static void Wait(Func<bool> condition)
{
int count = 0;
while (!condition() && count < 30)
{
System.Threading.Thread.Sleep(1000);
count++;
}
}
//Send tab key press to browser
public static void PressTab()
{
System.Windows.Forms.SendKeys.SendWait("{TAB}");
System.Threading.Thread.Sleep(300);
}
//Send specified key press to browser
public static void PressKey(string keyname)
{
System.Windows.Forms.SendKeys.SendWait("{" + keyname.ToUpper() + "}");
System.Threading.Thread.Sleep(300);
}
}
Hope this helps.
回答2:
I am using IE 11 and was able to download and close the dialog box
Automate of file download in IE 11 using c#
来源：https://stackoverflow.com/questions/30638359/click-on-save-or-saveas-dialog-of-file-download