How to disable radio button on button click?

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I have radio buttons in my project which should get disabled if one of the 2 options from a list of 4 attributes is selected. This is my code:

ASP.NET

<asp:DropDownList ID="drpLType" runat="server" CssClass="drp">
 <asp:ListItem Value="0" Selected="True">Professional</asp:ListItem>
 <asp:ListItem Value="1">Enterprise</asp:ListItem>
 <asp:ListItem Value="2">Maintanence</asp:ListItem>
 <asp:ListItem Value="3">Reporting</asp:ListItem>
</asp:DropDownList>

I used javascript for this purpose:

JavaScript

function funMeapSupportValidate(val)
{
  switch(val)
    {
        case "0" :
            document.getElementById('<%=this.rdoMeapSupport.ClientID%>').disabled = false;
            break;
        case "1" :
            document.getElementById('<%=this.rdoMeapSupport.ClientID%>').disabled = false;
            break;
        case  "2" :
            document.getElementById('<%=this.rdoMeapSupport.ClientID%>').check = false;
            document.getElementById('<%=this.rdoMeapSupport.ClientID%>').disabled = true;
            break;
        case  "3" :
            document.getElementById('<%=this.rdoMeapSupport.ClientID%>').check = false;
             document.getElementById('<%=this.rdoMeapSupport.ClientID%>').disabled = true;
            break;
        default:
            break;
    }
}

At my backend code:

C#

protected void drpLType_SelectedIndexChanged(object sender, EventArgs e)
{
    if (drpLType.SelectedValue == "Professional")
    {
        rdoMeapSupport.Enabled = true;
    }

    if (drpLType.SelectedValue == "Enterprise")
    {
        rdoMeapSupport.SelectedValue = null;
        rdoMeapSupport.Enabled = true;
    }

    if ((drpLType.SelectedValue == "Maintanence") || (drpLType.SelectedValue == "Reporting"))
    {
        rdoMeapSupport.Enabled = false;
        rdoMeapSupport.ClearSelection();
    }

}

Now the problem is there are two buttons on my website. Whenever I click those buttons, the radio buttons get activated even when I have selected Maintenance or Reporting . How do I disable that?

This is on my page load event:

C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!IsPostBack)
    {
        Tab1.CssClass = "Clicked";
        MainView.ActiveViewIndex = 0;

        if (drpLType.SelectedValue == "Professional")
        {
            rdoMeapSupport.Enabled = true;
            rdoMeapSupport.SelectedValue = "Yes";
        }

        drpLType_SelectedIndexChanged();
    }

    drpLType.Attributes.Add("onchange", "javascript:funMeapSupportValidate(this.value);");
}

Posted 18-Dec-12 16:53pm

BlehBlahBah

Updated 18-Dec-12 17:08pm

v4

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Comments

Dee_Bee 18-Dec-12 23:02pm

Check whether you have written rdoMeapSupport.Enabled = true; on page load.

BlehBlahBah 18-Dec-12 23:08pm

hey. i've updated my question with the page load event

Dee_Bee 18-Dec-12 23:18pm

remove if (drpLType.SelectedValue == "Professional")
{
rdoMeapSupport.Enabled = true;
rdoMeapSupport.SelectedValue = "Yes";
}
from your on page load and run the solution. I guess problem is with that only.

Dee_Bee 18-Dec-12 23:20pm

Why did you place if (drpLType.SelectedValue == "Professional") { rdoMeapSupport.Enabled = true; rdoMeapSupport.SelectedValue = "Yes"; }
on page load again, as you have separate event in your code ?

Zaf Khan 18-Dec-12 23:17pm

With ref to my solution (solution 1) the same applies to your code in your FORM_Load event code.... use the numbers instead of the text professional, enterprise etc etc.....

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Zaf Khan · Accepted Answer · 2012-12-18T17:12:00

in your code where you have the following..........

C#

protected void drpLType_SelectedIndexChanged(object sender, EventArgs e)
{
    if (drpLType.SelectedValue == "Professional")
    {
        rdoMeapSupport.Enabled = true;
    }

    if (drpLType.SelectedValue == "Enterprise")
    {
        rdoMeapSupport.SelectedValue = null;
        rdoMeapSupport.Enabled = true;
    }

    if ((drpLType.SelectedValue == "Maintanence") || (drpLType.SelectedValue == "Reporting"))
    {
        rdoMeapSupport.Enabled = false;
        rdoMeapSupport.ClearSelection();
    }

}

Shouldnt that be.............

C#

protected void drpLType_SelectedIndexChanged(object sender, EventArgs e)
{
    if (drpLType.SelectedValue == "1")
    {
        rdoMeapSupport.Enabled = true;
    }

    if (drpLType.SelectedValue == "2")
    {
        rdoMeapSupport.SelectedValue = null;
        rdoMeapSupport.Enabled = true;
    }

    if ((drpLType.SelectedValue == "3") || (drpLType.SelectedValue == "4"))
    {
        rdoMeapSupport.Enabled = false;
        rdoMeapSupport.ClearSelection();
    }

}

The reason for this is you have CLEARLY defined VALUE="1" value="2" etc