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GeckoFX How To Trigger Or Fire JavaScript _doPostBack() Method

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Here's how you fire a _doPostBack() in ASP.NET using GeckoFX. 
//fire js method  
using (AutoJSContext context = new AutoJSContext(this.JSContext))  
{  
 string result;  
 context.EvaluateScript(string.Format("javascript:__doPostBack('{0}','')",   
 paramControlName), out result);  
}
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