StringBuilder addstring = new StringBuilder(); addstring.Append(@"<A href=""DisplayFlatDetails.aspx?State="); addstring.Append(Statename.SelectedItem.Value.ToString()); addstring.Append(@"&Country="); addstring.Append(txtCountry.Text.ToString().Trim()); addstring.Append(@"&TracingNo="); addstring.Append(txtTracing.Text.ToString().Trim()); addstring.Append(@"&BlockNumber="); addstring.Append(txtBlockNumber.Text.ToString().Trim()); addstring.Append(@"&FlatID="); addstring.Append(txtFlatID.ToString().Trim()); addstring.Append(@""">"); addstring.Append(@"<font face=""verdana"" size=""2"">Display Flat Details</font></A>"); return addstring.ToString();