while accessing values from dynamic controls getting error

Question

Hi All,

 

I have created dynamic textboxes in a panel and trying to save them into database as a XML file, but I am receiving an error like 

Unable to cast object of type 'System.Web.UI.LiteralControl' to type 'System.Web.UI.WebControl'

Here is my piece of code which I have written

 

StringBuilder _StrResult = new StringBuilder();

_StrResult.Append("<root>");

foreach (TextBox txt in pnlInterview.Controls)

{

foreach (Label lbl in pnlInterview.Controls)

{

Label lblLevel = (Label)pnlInterview.FindControl("lbl");

TextBox txtInterviewRound = (TextBox)pnlInterview.FindControl("txt");

_StrResult.Append("<InterviewLevel>");

_StrResult.Append("<level>" + lblLevel.Text.ToString() + "</level>");

_StrResult.Append("<RoundName>" + txtInterviewRound.Text.ToString() + "</RoundName>");

_StrResult.Append("</InterviewLevel>");

}

}

_StrResult.Append("</root>");

return _StrResult;

 

Unable to recognize where it went wrong

 

I am unable to access oftype(<Textbox>)

 

at starting foreach loop only I am receiving this error 

 

any help is appreciated