[Solved] RadListBack Default selected when transfered

[Jeremy]

Once I drag an item from one RadListBox to the TransferTo RadListBox, I want the item I just moved defaulted to selected in the TransferTo RadListBox. So when I drage a group from AllGroupsRadListBox into SharedGroupsRadListBox, I want the SharedGroupsRadListBox copy of the group to be selected so that the user can then do what he/she needs to do with the Group they just copied without having to then click on it again (my users are very click averse and quite vocal about it).<telerik:RadListBox runat="server" ID="AllGroupsRadListBox" Height="200px" Width="200px" AllowTransfer="true" SelectionMode="Single" TransferToID="SharedGroupsRadListBox" EnableDragAndDrop="true" OnClientSelectedIndexChanged="AllGroupsRadListBox_SelectedIndexChanged" />
<telerik:RadListBox runat="server" ID="SharedGroupsRadListBox" Height="200px" Width="200px" /><br />
Users in selected group:<br />
<telerik:RadListBox runat="server" ID="UsersRadListBox" Height="200px" Width="200px" />

private void FillAllGroups()
{
 BWGroups allGroups = new BWGroups();
 allGroups.GetAllBWGroups();

 AllGroupsRadListBox.DataTextField = "BWGroupName";
 AllGroupsRadListBox.DataValueField = "BWGroupID";
 AllGroupsRadListBox.DataSource = allGroups.BWGroupList;
 AllGroupsRadListBox.DataBind();
}

protected void AllGroupsRadListBox_SelectedIndexChanged(object sender, EventArgs e)
{
int parseGroupId = -1; Int32.TryParse(AllGroupsRadListBox.SelectedValue.ToString(), out parseGroupId);

BWUsers usersInGroup = new BWUsers();

if(parseGroupId > 0)
 usersInGroup.GetActiveBWUsersByGroupID(parseGroupId);

UsersRadListBox.DataTextField = "BWGroupName";
UsersRadListBox.DataValueField = "BWGroupID";
UsersRadListBox.DataSource = usersInGroup.BWUserList;
UsersRadListBox.DataBind();
}

[Princy]

Hi Jeremy,

Please try to attach the OnInserting ​event of SharedGroupsRadListBox ​and there set the each newly inserting item as selected. In order to select more than one Item try to set the SelectionMode of SharedGroupsRadListBox  to Multiple.

ASPX:

<telerik:RadListBox runat="server" ID="SharedGroupsRadListBox" Height="200px" Width="200px"
    SelectionMode="Multiple" OnInserting="SharedGroupsRadListBox_Inserting" />

C#:

protected void SharedGroupsRadListBox_Inserting(object sender, Telerik.Web.UI.RadListBoxInsertingEventArgs e)
{
    foreach (RadListBoxItem item in e.Items)
    {
        item.Selected = true;
    }
}

Thanks,
Princy.

[Jeremy]

Hi Princy,
Thanks for the reply.  I tried what you suggested but I'm not able to get the event to fire.  I've tried both the OnInserting as well as the OnInserted.

<telerik:RadListBox runat="server" ID="SharedGroupsRadListBox" Height="200px" Width="200px"
    AllowTransfer="true" SelectionMode="multiple" EnableDragAndDrop="true"
    TransferToID="AllGroupsRadListBox"
    AutoPostBack="true" OnInserting="SharedGroupsRadListBox_Inserting" OnInserted="SharedGroupsRadListBox_Inserted" />

protected void SharedGroupsRadListBox_Inserting(object sender, Telerik.Web.UI.RadListBoxInsertingEventArgs e)
{
    foreach (RadListBoxItem item in e.Items)
    {
        item.Selected = true;
    }
}

protected void SharedGroupsRadListBox_Inserted(object sender, RadListBoxEventArgs e)
{
    foreach (RadListBoxItem item in e.Items)
    {
        item.Selected = true;
    }
}

But it's not getting into either method.

[Jeremy]

Found the problem.  Apparently it's not enough to set AutoPostBack="true" but there's also a AutoPostBackOnTransfer that needs to be set.  It's working now.  Thanks for your help Princy.