Set selected values from server-side to bootstrap-multiple-select

Question

For bootstrap-select I want to set selected values from server side. ( I work with ASP.Net). As I read, I should add to name of select [] to get multiple values. But ASP.Net doesn't give opportunity to make this. So I don't know how to make it.

I try just set my list of selected values as value to my select, but this doesn't help.

private void LoadPlatform(IEnumerable<string> platforms) {
  try {
    selectPlatforms.Value = string.Join(",", platforms);
  }
  catch (Exception ex) {
    UnityConfig.Container.Resolve<IExeptionLogger>().Log(ex);
  }
}

Answer 1

Add runat="server" to your select :

<select id="Select1" runat="server" name="D1">

</select>

Then you can add datasource the normal way:

 Select1.DataSource = platforms; // or a dataset 
 Select1.DataTextField = "name"; 
 Select1.DataValueField = "id";
 Select1.DataBind();

The other way would be to call a webmethod and return Json then populate it by Jquery :

  $.each(data, function (key, val) {
        items += "<option value='" + val.id+ "'>" + val.value+ "</option>";    
  });    
  $('#Select1').html(items);

if you want to set the default selected item:

ListItem li = Select1.Items.FindByText("Three");
ListItem li = Select1.Items.FindByValue("3");
li.Selected = true;

source