<div>
Is the current window open?<br />
<br />
do the check <br />
if (contentWindow.document)<br />
{<br />
<br />
}
</div>


Is the current window open?

do the check
if (contentWindow.document)
{

}

<div>
I tried that but get an error message that the contentWindow is undefined. How do I define it?
</div>


I tried that but get an error message that the contentWindow is undefined. How do I define it?

<div>
It says that contentWindow is undefined also. What I don't understand is: what's the relationship between calling the button click and contentWindow?
</div>


It says that contentWindow is undefined also. What I don't understand is: what's the relationship between calling the button click and contentWindow?

<div>
<div class="content wysiwyg-content">
Does anyone know more about this error and maybe how to fix it? It happens when I call button click from javascript: Form1.button1.click();<br />
<br />
Thanks
</div>
</div>


Does anyone know more about this error and maybe how to fix it? It happens when I call button click from javascript: Form1.button1.click();

Thanks

ASP.NET 'contentWindow.document is null' error

Active Server Pages (ASP) is Microsoft’s first server-side engine for dynamic web pages. ASP’s support of the Component Object Model (COM) enables it to access and use compiled libraries such as DLLs. It has been superseded by ASP.NET, but will be supported by Internet Information Services (IIS) through at least 2022.