CODEWITHSUNDEEP
htmlvb.netcheckboxvisible
narue1992
narue1992

Reputation: 1203

Radio Group doesn't unHide when Checkbox is selected

I am trying to unhide a group of radio buttons if the checkbox above it is checked and hide them when checkbox isn't checked. I had a previous version of this, in the same application, and it works just fine [radio button opens checkboxes instead] under Working one. When MinorCheck is selected the radio buttons don't become visible. No errors show, nothing happens. Why is this?

I have looked at other comments how Visible = "false" stops it and so forth. however, it is clear that visible="false" at the start isn't an issue for my first block of coding.

one reference I have used: ASP.NET CheckBox does not fire CheckedChanged event when unchecking

Working one:

HTML 

<td class="LeftAlign" width="24%">                 

<font class="Blackfont" size="1">
<B>                                     Union Affiliated?
</B>
</font>
<font class="WeOrangefont" size="1">
&#8226;
</font>
</td>
    <td width="10%">
       <asp:RadioButtonList ID="rblclass" runat="server" AutoPostBack="True" class="Bluefont" size="1" font-Bold="True" font-Size="8pt" >

              <asp:ListItem Value="Y">Yes</asp:ListItem>
              <asp:ListItem Value="N">No</asp:ListItem>
       </asp:RadioButtonList>
     </td>

     <td></td>  
  </tr>
</table>

VB.NET

Protected Sub rblclass_SelectedIndexChanged(sender As Object, e As EventArgs) Handles rblclass.SelectedIndexChanged
    If (rblclass.SelectedValue = "Y") Then
        Register.Focus()
        union1.Visible = True
        union2.Visible = True
        union3.Visible = True
        LocalLbl.Visible = True
        Reqimage.Visible = True
    Else
        Register.Focus()
        union1.Visible = False
        union2.Visible = False
        union3.Visible = False
        LocalLbl.Visible = False
        Reqimage.Visible = False
    End If

End Sub

Other part of coding that doesn't work even though it is very similar:

<tr>
<td class="LeftAlign" colspan="2">
    <font class="Blackfont" size="1">
               <asp:CheckBox ID="MinorCheck" runat="server" NAME="BUSINESSCLASSIFICATION" 
               class="ownerClass" value="000" checked = "false" TabIndex="32"/>

               <asp:HyperLink ID="HyperLink2" runat="server" TABSTOP = "-1" onClick="OpenWindow('Images/Supp.html', 'Min Business Concern',600, 300, 'no')" font-Underline="True" ForeColor="#666666" >Minority Business Concern</asp:HyperLink> 
   </font>
</td>

</tr>
<tr>    
  <td>
     <asp:RadioButtonList ID="RadioButtonBClass" runat="server" AutoPostBack="True"
                            class="Bluefont" size="1" font-Bold="True" font-Size="8pt" visible = "false">

      <asp:ListItem Value="Y" >African-American male</asp:ListItem>
      <asp:ListItem Value="N">African-American female</asp:ListItem>
      <asp:ListItem Value="N">Asian-Indian American male</asp:ListItem>
      <asp:ListItem Value="N">Asian-Indian American female</asp:ListItem>
      <asp:ListItem Value="N">Asian-Pacific American male</asp:ListItem>
      <asp:ListItem Value="N">Asian-Pacific American female</asp:ListItem>
      <asp:ListItem Value="N">Native American male</asp:ListItem>
      <asp:ListItem Value="N">Native American female</asp:ListItem>

  </asp:RadioButtonList>
  </td>
</tr>

VB.NET

Protected Sub MinorCheck_CheckedChanged(sender As Object, e As EventArgs) Handles MinorCheck.CheckedChanged
    If (MinorCheck.Checked = true) Then
        RadioButtonBClass.Visible = True
        NonMinorCheck.Checked = false
    Else
        RadioButtonBClass.Visible = False
    End If
End Sub

Upvotes: 0

Views: 119

Answers (2)

InbetweenWeekends
InbetweenWeekends

Reputation: 1414

Your checkbox is missing the AutotPostBack=True. Without it, the CheckedChanged event will not fire until some other control performs a PostBack.

Upvotes: 1

Chris Rosete
Chris Rosete

Reputation: 1258

It is confusing but when you use the property Visible in ASP controls, actually don't create the object at all, so if you tried to change to Visible true is not going to work, what I personally use is a trick with a CSS Class, I am going to copy the code I made for your case:

<style>
    .CSSHiden {
        display: none;
    }
</style>

Note: I set Autopostback=true on the Checkbox Minor Check

<asp:CheckBox ID="MinorCheck" runat="server" NAME="BUSINESSCLASSIFICATION" 
           class="ownerClass" value="000" TabIndex="32" OnCheckedChanged="MinorCheck_CheckedChanged" AutoPostBack="True"/>
<asp:HyperLink ID="HyperLink2" runat="server" TABSTOP = "-1" onClick="OpenWindow('Images/Supp.html', 'Min Business Concern',600, 300, 'no')" font-Underline="True" ForeColor="#666666" >Minority Business Concern</asp:HyperLink>

    <asp:RadioButtonList ID="RadioButtonBClass" runat="server" AutoPostBack="True" class="Bluefont" size="1" font-Bold="True" font-Size="8pt" CssClass="CSSHiden">
        <asp:ListItem Value="Y" >African-American male</asp:ListItem>
      <asp:ListItem Value="N">African-American female</asp:ListItem>
      <asp:ListItem Value="N">Asian-Indian American male</asp:ListItem>
      <asp:ListItem Value="N">Asian-Indian American female</asp:ListItem>
      <asp:ListItem Value="N">Asian-Pacific American male</asp:ListItem>
      <asp:ListItem Value="N">Asian-Pacific American female</asp:ListItem>
      <asp:ListItem Value="N">Native American male</asp:ListItem>
      <asp:ListItem Value="N">Native American female</asp:ListItem>

    </asp:RadioButtonList>

And the code I used c#, but is very simple to change to VB.net

protected void MinorCheck_CheckedChanged(object sender, EventArgs e)
    {
        if (MinorCheck.Checked == true)
            RadioButtonBClass.CssClass = "";
        else
            RadioButtonBClass.CssClass = "CSSHiden";
    }

Upvotes: 1

Related Questions