Why is my RadioButtonList selectedValue empty?

Question

I have a RadioButtonList:

<asp:RadioButtonList ID="rblMedicationTime" runat="server"  onselectedindexchanged="rblMedicationTime_SelectedIndexChanged"  DataSourceID="dtsMedicationTime" DataTextField="LookupItem" DataValueField="Id"  AutoPostBack="true"></asp:RadioButtonList>

On page load, I want to select a radio button from the list and set its value, for which I have written this line of code:

rblMedicationTime.SelectedValue = clientMedicationSchedule.glTypeId.ToString();

The RadioButtonList is populating successfully, but the value is unable to be selected.

rblMedicationTime.SelectedValue is always "" when I debug the code.

Answer 1

You just need to use

string myValue = myRadioButtonList.SelectedItem.Value

The property object myRadioButtonList.SelectedItem contains all values from the selected item of a Radio Button list or a DropDown list

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to set the value programmatically all you have to do is:

myRadioButtonList.SelectedIndex = 0;

You can see that you have several ways to Get but only one to Set:

• myRadioButtonList.SelectedIndex --> Gets or Sets
• myRadioButtonList.SelectedValue --> Gets
• myRadioButtonList.SelectedItem --> Gets