Find a HTML control using FindControl in ASP.NET

Posted by Yongwei Xing on Stack Overflow See other posts from Stack Overflow or by Yongwei Xing
Published on 2010-04-01T08:13:51Z Indexed on 2010/04/01 8:23 UTC
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Hi akk

I add a select control to a ASPX page like below:

hgc = new HtmlGenericControl();
hgc.InnerHtml = @"<select runat='server' id='my_selectlist'> \
                  <option value='volvo'>Volvo</option> \
                  <option value='saab'>Saab</option> \
                  <option value='mercedes'>Mercedes</option> \
                  <option value='audi'>Audi</option> \
                </select>";

Then in a Button click event, I use the code below, try to get the value selected

HtmlSelect s = (HtmlSelect)hgc.FindControl("my_selectlist");
label.Text = s.Value;

I get a error:"Object reference not set to an instance of an object." Does anyone try it before?

Best Regards

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