title: Bind two columns values in dropdown
body: <p>I Developed Online Appointment application using asp.net,c# and sql server. 
   I want to bind the two column in that dropdown.
  In my database table have two column of MobileNo ,LandNo.
  I want these two columns value come in a single dropdown using C# and asp.net.
  Ex:</p>
  
  <pre><code>Mobileno:97456874532,7523684521
  Landno:0886075123,0886035123
  </code></pre>
  
  <p>Result in Dropdown:</p>
  
  <pre><code>97456874532
  7523684521
  0886075123
  0886035123
  </code></pre>