ASP.Net Checkbox conditional Attributes

Question

I have a webform with a checkbox in it. I need to do two things differently based on an environment setting.

Add a class

Add the Text attribute so a label gets created

                        <% if setting == true) { %>
                        <asp:CheckBox ID="optionCheckbox" class="option-checkbox radio-checkbox" runat="server" Text="Label Text"/>
                        <% } else { %>
                        <asp:CheckBox ID="optionCheckbox" class="option-checkbox" runat="server"/>
                        <% } %>

The problem with this is the page won't render because the ids are the same, even though only one could ever get rendered. There is a lot of other processing with javascript and such so I don't want different ids for each scenario.

Nick · Accepted Answer · 2017-09-20 19:20:52Z

1

I was able to fix this by keeping only the "base" checkbox code below and then overriding the PreRender event to add the class and set the Text attribute there.

<asp:CheckBox ID="optionCheckbox" class="option-checkbox" runat="server"/>

Code Behind:

                CheckBox optionCheckbox = this.optionCheckbox as CheckBox;
                if (optionCheckbox != null)
                {
                    optionCheckbox.Text = "Label Text";
                    optionCheckbox.Attributes.Add("class", "option-checkbox radio-checkbox");
                }

I'd still like to know if there is a way to do this in the markup file though.

answered Sep 20, 2017 at 19:20

Nick

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Hüseyin Burak Karadag · Accepted Answer · 2017-09-20 19:32:50Z

0

Sorry about this syntax , I don't use ASPNet webPage. You can implement it logically..

Firstly , define class and text variable and set value for business..

Finaly set checkbox class and Text value by variable

var class = "option-checkbox";
var text = "";
if(setting == true)
{
    class = "option-checkbox radio-checkbox";
    text  = "Label Text"; 
}

 <asp:CheckBox ID="optionCheckbox" class="setClassProperty" runat="server" Text="SetTextProperty"/>

edited Sep 20, 2017 at 19:32

answered Sep 20, 2017 at 19:22

Hüseyin Burak Karadag

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1 Comment

Nick Over a year ago

This is similar to what I ended up doing but won't quite work as written. Thank you though.

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