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Glen Lewis
Posts: 29
Joined: 2021-03-12
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I have added a WebView2 control I added to the Excel Advance Pane. It works perfectly when I run the project from Visual studio. Once I setup the installer and install it. The Webview2 Throws and exception error.
************** Exception Text **************
System.InvalidCastException: Specified cast is not valid.
at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo)
at System.Runtime.InteropServices.Marshal.ThrowExceptionForHR(Int32 errorCode)
at Microsoft.Web.WebView2.Core.CoreWebView2Environment.<CreateAsync>d__3.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at ExcelFinanceAddIn.ADXRegisterApiPane.<InitializeWebView2Async>d__8.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
Code I use to init the WebView2 Control.
private void ADXRegisterApiPane_Load(object sender, EventArgs e)
{
InitializeWebView2Async(portalWebBrowser);
}
private async void InitializeWebView2Async(WebView2 wv, string initialSource = "", string webCacheDir = "")
{
//set value
string tempWebCacheDir = webCacheDir;
//if user didn't specify a webCacheDir,
//use the user's temp folder
if (String.IsNullOrEmpty(tempWebCacheDir))
{
//get fully-qualified path to user's temp folder
tempWebCacheDir = System.IO.Path.GetTempPath();
}//if
tempFolder.Text = tempWebCacheDir;
CoreWebView2EnvironmentOptions options = null;
//options = new CoreWebView2EnvironmentOptions("--disk-cache-size=200");
//options = new CoreWebView2EnvironmentOptions("?Â?Ð?ãincognito ");
//set WebView2 control cache/data folder. The cache/data folder is used to
//store WebView2 cached objects. If not specified, the folder where the executable
//was started will be used. If the user doesn't have write permissions
//on that folder, such as C:Program Files<your application folder>,
//an exception will be thrown
CoreWebView2Environment webView2Environment = null;
//webView2Environment = await CoreWebView2Environment.CreateAsync(@"C:Program Files (x86)MicrosoftEdge DevApplication85.0.564.8", tempDir2, options);
webView2Environment = await CoreWebView2Environment.CreateAsync(null, tempWebCacheDir, options);
//CoreWebView2 must be inialized before it can be used
//wait for CoreWebView2 initialization
//when complete, CoreWebView2Ready event will be thrown
await wv.EnsureCoreWebView2Async(webView2Environment);
//set source to 'about:blank'
wv.Source = new Uri("about:blank", UriKind.Absolute);
if (!String.IsNullOrEmpty(initialSource))
{
//Navigate to URL
//Debug.Print("Navigating to URL...");
WebsiteNavigate(wv, initialSource);
}
}
public void WebsiteNavigate(WebView2 wv, string dest)
{
string tempDest = dest;
if (wv != null && wv.CoreWebView2 != null)
{
if (!String.IsNullOrEmpty(dest))
{
if (dest != "about:blank" &&
!dest.StartsWith("edge://") &&
!dest.StartsWith("file://") &&
!dest.StartsWith("http://") &&
!dest.StartsWith("https://"))
{
//URL must start with one of the specified strings
//if not, pre-pend with "http://" or "https://"
//Debug.Print("Prepending "http://" to URL.");
//set value
tempDest = "http://" + dest;
}
//option 1
wv.CoreWebView2.Navigate(tempDest);
//option 2
//wv.Source = new Uri(tempDest, UriKind.Absolute);
}
}
}
What I cannot figure out is why it is failing when I install it and launch excel, but works when I am in debug? |
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Andrei Smolin
Add-in Express team
Posts: 18829
Joined: 2006-05-11
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Hello Glen,
Does it work if you comment out the initialization code completely?
Andrei Smolin
Add-in Express Team Leader |
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Glen Lewis
Posts: 29
Joined: 2021-03-12
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I don't get an error, but the WebView2 doesn't load. |
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Andrei Smolin
Add-in Express team
Posts: 18829
Joined: 2006-05-11
|
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