Can't access the controls in Silverlight Application

[Sujeet]

I trying to automate the Silverlight UI, It contains the tab structure the change tile textbox is in bydefault selected Tab ,  I am  trying to access it (see the last line in test code which is Bold throws Exception.) but it throwing some exception the eeor messgae is as below

Exception thrown during the wait for a condition. Error: Unexpected error while waiting on condition.
Error: System.NullReferenceException: Object reference not set to an instance of an object.
   at ArtOfTest.WebAii.Silverlight.VisualWait.WaitForExistsByFindInfo(VisualFindInfo findInfo)
   at ArtOfTest.Common.WaitAsync._worker_DoWork[T,V](Object waitParam)


My Xaml file code snippet is like below

 

<TextBlock Grid.Row="0" Grid.Column="0" Style="{StaticResource TitleTextBlockStyle}"><Run Text="Change Title"/></TextBlock>

<TextBox x:Name="txt_Essentials_ChangeTitle" Grid.Row="0" Grid.Column="2" Margin="2">

 

</TextBox>

 

 

Below is my Test Code:

 

Settings mySettings = new Settings(BrowserType.InternetExplorer, @"D:\log\");

 

 

 

Manager myManager = new Manager(mySettings);

 

 

myManager.Start();

myManager.LaunchNewBrowser();

myManager.ActiveBrowser.NavigateTo("

http://ApplicationURL");

 

 

myManager.ActiveBrowser.WaitUntilReady();

 

SilverlightAppsList slvrApp = myManager.ActiveBrowser.SilverlightApps();

 

 

 

SilverlightApp app = slvrApp.GetApp(0);

 

 

app.FindName<

TextBox>("txt_Essentials_ChangeTitle").Text = "ArtOfTest did the trick";


Please Suggest me the solution I am stucked up here ...........!

 

 

 

 

 

[Cody]

Hello Sujeet,

It appears you are missing the step to enable Silverlight automation. Please modify your startup with this:

Settings mySettings = new Settings(BrowserType.InternetExplorer, @"D:\log\");
mySettings.EnableSilverlight = true;
Manager myManager = new Manager(mySettings);

Which line of code is throwing the NulReferenceException?

All the best,
Cody
the Telerik team

[Sujeet]

Hello Cody,


Still I am getting the same Exception,The following line throwing the Exception

app.FindName<TextBox>("txt_Essentials_ChangeTitle").Text = "ArtOfTest did the trick";

Pleeeeeeease help me, Thanx in advance.

 

[Sujeet]

Is anybody have the solution for this............Pleeeeeeeeeeze..!

[Sujeet]

Hey I have got the Solution, I just added the below line before Navigating to URL, and it works.

 

 myManager.LaunchNewBrowser();
 myManager.ActiveBrowser.WaitUntilReady();

 myManager.ActiveBrowser.ClearCach(BrowserCacheType.TempFilesCache);

 myManager.ActiveBrowser.NavigateT("ApplicationURL");

Is it mandetory to add this line,any way its workin fine now...

[Cody]

Hi Sujeet,

Sorry I couldn't get back to you earlier. I'm glad you found a solutiion!

Adding the ClearCache call normally is not necessary. Sometimes it does help connecting to and automating Silverlight application. I guess it was needed in your case. Usually the ClearCache call only clears up a "Unable to connect to Silverlight application" symptom.

Sincerely yours,
Cody
the Telerik team