Telerik RadWindow Javascript return values to ASP.NET

Question

I have a parent page that launches a telerik radwindow and passes it an argument. Once the radwindow is done processeing the value, I need it to return it to the parent page, and I would like the parent page to have access to this value in my code behind page. I have tried to pass the value to a hidden field on my page and then trigger a page refresh and my code behind watches to see if the value is working. I can't seem to get this to work. I get the return value in the parent javascript, but i can't get it from my hidden field from the code behind. I even get it into the text box like i need to but, when i find the Hidden field in the codebehind, there is no value set. Where I have set alerts, I am getting the values displayed as i need to. I suspect that the reason I can't see my return value in the code behind file, is that when the page is refreshed, I am getting a new page and not only causing a post back. And is there not a better way i can do this. here is my code in the paren…

Accepted Answer

You are doing the following

```
GetRadWindow().BrowserWindow.location.reload(); 
```

But that wont cause a postback it will simply reload the parent page, you need to cause a potback. You could try adding a button to the parent form with the style set 'display:none', and handling the click event in the code behind, you can fire this button off from your js code.

In Parent Page :

```
<asp:Button runat="server" id="btnClick" Style="display:none"    OnClick="btnClick_Click"/>

protected void btnClick_Click(object sender,EventArgs e)
{
     string val = this.Hidden1.Value; //Code goes here
}
```

You can invoke from your javascript like this (non jQuery), place this in your callback

```
document.getElementById('<%= btnClick.ClientID').click();
```

Telerik RadWindow Javascript return values to ASP.NET

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