Binding error in web pages Asp.net using webmatrix - asp.net

Question

i am working on web pages under webmatrix, i have tried this code and facing this error
Cannot perform runtime binding on a null reference
I have a query which fetch the record from database and another to update that record.
var SelectEmpInfo = "SELECT * FROM emp_info WHERE emp_id =#0";
var SelectedEmpInfo = db.QuerySingle(SelectEmpInfo,empID);
if(IsPost)
{
if(Request.Form["approve"]!=null)
{
var updateStatus = "UPDATE emp_info SET status='"+1+"' WHERE emp_id=#0";
db.Execute(updateStatus,empID);
<h1>Successfully Updated</h1>
}
}
and i fetch each column associated with this id in a table like
<thead>
<tr class="info">
<th>Full Name</th>
<th>Fathers Name</th>
<th>CNIC </th>
<th>DOB</th>
<th>Gender</th>
<th>Self Status</th>
<th>Religion</th>
<th>Nationality</th>
</tr>
</thead>
<tbody>
<tr class="active">
<td>#SelectedEmpInfo.fullName</td>
<td>#SelectedEmpInfo.fatherName</td>
<td>#SelectedEmpInfo.cnic</td>
<td>#SelectedEmpInfo.dob</td>
<td>#SelectedEmpInfo.gender</td>
<td>#SelectedEmpInfo.selfStatus</td>
<td>#SelectedEmpInfo.religion</td>
<td>#SelectedEmpInfo.nationality</td>
</tr>
</tbody>
</table>
</div>
</div>
I face this error
Server Error in '/' Application.
Cannot perform runtime binding on a null reference
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
<tr class="active">
<td>#SelectedEmpInfo.fullName</td>
<td>#SelectedEmpInfo.fatherName</td>
<td>#SelectedEmpInfo.cnic</td>
I don't get to know why i am facing this kind of error.
Please someone help me out there.
Thanks in advance

Answer 1

This will happen if the row with the emp_id you passed doesn't exists. Check for null row and you're good to go.
<tr class="active">
#if(SelectedEmpInfo!=null)
{
<td>#SelectedEmpInfo.fullName</td>
<td>#SelectedEmpInfo.fatherName</td>
<td>#SelectedEmpInfo.cnic</td>
}
else
{
<td></td>
<td></td>
<td></td>
}