title: To set Asp Radio button attribute (value) to a string
body: <p>In the below mentioned code iam adding the attribute 'value' to the radio button. I need to know how to set the radio button 'value' attribute to a string.</p>
  
  <p>Thanks in advance.</p>
  
  <pre><code>protected void Page_Load(object sender, EventArgs e)
  {
      RadioButton rdoAuthModeSingleFactor = new RadioButton();
      rdoAuthModeSingleFactor.Text = authModeObj["AuthenticationModes"].ToString();
      string authModeIdVal = authModeObj["AuthenticationModeId"].ToString();
      rdoAuthModeSingleFactor.GroupName = "AuthModes";
      rdoAuthModeSingleFactor.ID = "AuthModeRdoID";
      rdoAuthModeSingleFactor.Attributes.Add("Value", authModeIdVal);
      plhldrAuthModes1.Controls.Add(rdoAuthModeSingleFactor);
  }
  
  protected void btnAuthModeSave_Click(object sender, EventArgs e)
          {
      //Here iam using placeholder functionalities
      // radio button object name is rdo
              string authenticationModeCheckedVal = rdo.Text;  // how to get value of radio button instead of text
      }
  </code></pre>