Hi Daniele,
Thank you for contacting Syncfusion support.
Query : Are there other methods to bind and preselect multiple values?
Yes, you can preselect multiple values either by using SelectedIndices property as shown below
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@Html.EJ().DropDownListFor(model => model.auto1).Datasource((IEnumerable<RolesList>)ViewData["List"]).DropDownListFields(f => f.Text("Name").Value("Id")).SelectedIndices(new List<int> { 1,2}).ShowCheckbox(true).WatermarkText("Seleziona Ruoli").Width("100%")
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Else, you can use Selected field of DropDownList to specify the items to be selected in the list as shown below
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@Html.EJ().DropDownListFor(model => model.auto1).Datasource((IEnumerable<RolesList>)ViewData["List"]).DropDownListFields(f => f.Text("Name").Value("Id").Selected("IsSelected")).ShowCheckbox(true).WatermarkText("Seleziona Ruoli").Width("100%") |
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public ActionResult Index()
{
List<RolesList> Role = new List<RolesList>();
Role.Add(new RolesList{Id="001", Name="Manager", IsSelected = true});
Role.Add(new RolesList { Id = "002", Name = "Supervisor", IsSelected = false });
Role.Add(new RolesList { Id = "003", Name = "Team Lead", IsSelected = true });
Role.Add(new RolesList { Id = "004", Name = "Engineer", IsSelected = false });
ViewData["List"] = Role;
return View();
} |
Refer to the below given UG links for more details
Query: Can I bind directly a List instead of DropDownListProperties?
As Value property is of sting type you cannot directly bind list collection values. You can pass these multiples values as string for value property as shown below
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@{string MyList = "001,002"; }
@Html.EJ().DropDownListFor(model => model.auto1).Datasource((IEnumerable<RolesList>)ViewData["List"]).Value(MyList).DropDownListFields(f => f.Text("Name").Value("Id")).ShowCheckbox(true).WatermarkText("Seleziona Ruoli").Width("100%")
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We have attached a sample for your reference which can be downloaded from the below link
Regards,
Keerthana.
