<div>
Which reporting tool are you using?<br />
<br />
mlmcc
</div>


<div>
Hi mlmcc,<br />
<br />
I am using the asp.net reportViewer.
</div>


<div>
What type of reports does it view?<br />
Crystal Reports, SSRS,?<br />
<br />
mlmcc
</div>


<div>
Hi mlmcc,<br />
<br />
None of the above mentioned. It is a asp.net module, which is part of the tools in Visual Studio designer. I need to be able to access the control from a static web method.
</div>


<div>
What type is the rptViewer variable? &nbsp;Not string probably but LoadControl called with one parameter requires the string (virtual path to a control file)...<br />
<br />
Simply put a breakpoint to that line and look at it in debugger.
</div>


<div>
It's a ASP.NET Report Viewer.
</div>


<div>
I've been asking for the C# variable type... &quot;ASP.NET Report Viewer&quot; cannot be C# variable type. <br />
<br />
The correct format of the LoadControl() call is:<br />
<br />
page.LoadControl( &quot;&lt;&lt;Place the control file virtual path here&gt;&gt;&quot; );
</div>


<div>
Hi pcelba,<br />
<br />
this is what i posted in my original post above.<br />
<br />

<pre><code class="code-1 nolinks" id="code-20-41544331-1"><span>ReportViewer viewer = (ReportViewer) page.LoadControl(rptViewer);</span>
</code></pre>
<br />
are you saying it needs to be:<br />
<br />

<pre><code class="code-1 nolinks" id="code-20-41544331-2"><span>ReportViewer viewer = (ReportViewer) page.LoadControl(http://localhost/pagename.aspx/rptViewer);</span>
</code></pre>
</div>


<div>
No, &quot;page.LoadControl(<a href="http://localhost/pagename.aspx/rptViewer" rel="ugc">http://localhost/pagename.aspx/rptViewer</a>)&quot; cannot work.<br />
<br />
Imagine the URL of your control: <a href="http://localhost/MyApplication/MyPages/Control.ascx" rel="ugc">http://localhost/MyApplication/MyPages/Control.ascx</a><br />
<br />
The term &quot;virtual path&quot; refers to the portion of the request URL that follows the server identifier; in this case, the virtual path is the following: /MyApplication/MyPages/Con<wbr />trol.ascx.<wbr /><br />
<br />
More info: <a href="https://msdn.microsoft.com/en-us/library/ms178116.aspx" rel="ugc">https://msdn.microsoft.com/en-us/library/ms178116.aspx</a><br />
<br />
I don't know the path of your control file but it should be easy to determine it when you read the above article.<br />
<br />
And remember the string literal parameter must be enclosed in double quotes in page.LoadControl().
</div>


<div>
Hi pcelba,<br />
<br />
perhaps, i'm missing something here - but I'm not using an .ascx control, i'm dragging a toolbox control (report viewer) onto an .aspx page, and then trying to call it from a WebMethod.
</div>


<div>
Are you saying that this is the only way I can get this work, is by placing the code inside a .ascx control? <br />
<br />
The control is already on a Webform, and if i call from a standard asp.net it loads. I just need to understand how to call it using a Webmethod. <br />
<br />
The addition of another component doesn't seem logically, unless of course its the only answer.<br />
<br />
Cheers
</div>


<div>
Many things are unbelievable at Microsoft...<br />
<br />
The use of additional control was the citation from the link mentioned.
</div>


<div>
<div class="content wysiwyg-content">
I need to call a ASP.NET `ReportViewer` from a `WebMethod`. I've can successfully call the method, that creates the method, but when a call `reportName.Reset();` I get the following error:<br />
<br />

<blockquote>
 {&quot;Object reference not set to an instance of an object.&quot;}
</blockquote>
<br />
Which basically means, the control hasn't been loaded yet into the DOM. So, I've tried using the `page.LoadControl` function, but I cant seem to get this to work:<br />
<br />
&nbsp; &nbsp; &nbsp;Page page = new Page();<br />
&nbsp; &nbsp; &nbsp;ReportViewer viewer = (ReportViewer) page.LoadControl(rptViewer<wbr />);<br />
<br />
This produces the following error, which I can't find elsewhere on the internet:<br />
<br />

<blockquote>
 Argument type 'Microsoft.Reporting.WebFo<wbr />rms.Report<wbr />Viewer' is not assignable to parameter of type string
</blockquote>
</div>
</div>


I need to call a ASP.NET `ReportViewer` from a `WebMethod`. I've can successfully call the method, that creates the method, but when a call `reportName.Reset();` I get the following error:

 {"Object reference not set to an instance of an object."}

Which basically means, the control hasn't been loaded yet into the DOM. So, I've tried using the `page.LoadControl` function, but I cant seem to get this to work:

     Page page = new Page();
     ReportViewer viewer = (ReportViewer) page.LoadControl(rptViewer);

This produces the following error, which I can't find elsewhere on the internet:

 Argument type 'Microsoft.Reporting.WebForms.ReportViewer' is not assignable to parameter of type string

ASP.NET ReportViewer from WebMethod.

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