Get user control html in asp.net

Question

i'm trying to load a user control from codebehind service and get it's html value. However there's a repeater in that control that isn't getting loaded/initialized so it's always null

i get

Object reference not set to an instance of an object.

within the loadOrderInvoiceView function when it tries to

// fill repeater
this.rptView.DataSource = result;
this.rptView.DataBind();

at the line where it says this.rptView.DataSource = result;... i've tried to debug and for some reason this.rptView is null

And here's the service call

    StringBuilder sb = new StringBuilder();
    StringWriter tw = new StringWriter(sb);
    HtmlTextWriter hw = new HtmlTextWriter(tw);

    //ctrl.RenderControl(hw);

    myControls.OrderInvoiceView oiv = new myControls.OrderInvoiceView();
    oiv.loadOrderInvoiceView(OID);// load the control with order id
    oiv.RenderControl(hw);

    return sb.ToString();

thanks in advance for any ideas. I'm using .net 4

i tought making the control will automatically initialize it.. anyway i'll be answering my own question. i just found out how to get around it — robert
– robert, Commented Dec 29, 2011 at 23:03
possible duplicate of How do I get the HTML output of a UserControl in .NET (C#)? — Tim Schmelter
– Tim Schmelter, Commented Dec 29, 2011 at 23:16

robert · Accepted Answer · 2011-12-29 23:05:20Z

3

i found out how to get around it

    Page p = new Page();
    myControls.OrderInvoiceView oiv = (myControls.OrderInvoiceView)p.LoadControl("~/myControls/OrderInvoiceView.ascx");

instead of

myControls.OrderInvoiceView oiv = new myControls.OrderInvoiceView();

final result

        StringBuilder sb = new StringBuilder();
        StringWriter tw = new StringWriter(sb);
        HtmlTextWriter hw = new HtmlTextWriter(tw);

        Page p = new Page();
        myControls.OrderInvoiceView oiv = (myControls.OrderInvoiceView)p.LoadControl("~/myControls/OrderInvoiceView.ascx");

        //myControls.OrderInvoiceView oiv = new myControls.OrderInvoiceView();
        oiv.loadOrderInvoiceView(OID);
        oiv.RenderControl(hw);

        return sb.ToString();

answered Dec 29, 2011 at 23:05

robert

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