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ASPxClientCardView.DeleteCard(visibleIndex) Method

Deletes the specified card.

Declaration

DeleteCard(visibleIndex: number): void

Parameters

Name Type Description
visibleIndex number

An integer value that identifies the card.

Remarks

Once the DeleteCard method is called, the ASPxCardView.CardDeleting event is raised. It allows you to cancel the delete operation. After a card has been deleted, the ASPxCardView.CardDeleted event is raised.

End-users can delete cards by clicking the Delete command.

Examples

To change ASPxCardView's data from the client side, there are appropriate ASPxClientCardView methods:

To save or cancel changes, there are:

The following example implements a custom defined toolbar with several ASPxButton, which perform all the editing capabilities over a grid's data source.

Note: to distinguish records, the property ASPxCardViewBehaviorSettings.AllowFocusedCard should be enabled for the grid.

    DataTable GetTable()
    {
        //You can store a DataTable in the session state
        DataTable table = Session["Table"] as DataTable;
        if (table == null)
        {
            table = new DataTable();

            DataColumn colid = table.Columns.Add("ID", typeof(Int32));
            DataColumn nameid = table.Columns.Add("Name", typeof(String));
            table.PrimaryKey = new DataColumn[] { colid };
            colid.ReadOnly = true;

            for (int i = 0; i < 23; i++)
            {
                DataRow aRow = table.NewRow();
                aRow["ID"] = i;
                aRow["Name"] = String.Format("Name{0}", i);

                table.Rows.Add(aRow);
            }
            Session["Table"] = table;
        }
        return table;
    }

    public Int32 GetLastKey()
    {
        DataTable table = GetTable();

        Int32 max = Int32.MinValue;
        foreach (DataRow row in table.Rows)
        {
            if (Convert.ToInt32(row["ID"]) > max)
                max = Convert.ToInt32(row["ID"]);
        }
        return max;
    }
    protected void Page_Init(object sender, EventArgs e)
    {
        grid.DataSource = GetTable();
        grid.KeyFieldName = "ID";
        grid.DataBind();
    }

    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void grid_InitNewCard(object sender, DevExpress.Web.Data.ASPxDataInitNewRowEventArgs e)
    {
        e.NewValues["ID"] = GetLastKey() + 1;
    }
    protected void grid_CardDeleting(object sender, DevExpress.Web.Data.ASPxDataDeletingEventArgs e)
    {
        ASPxCardView grid = sender as ASPxCardView;

        DataTable table = GetTable();
        DataRow found = table.Rows.Find(e.Keys[0]);
        table.Rows.Remove(found);

        Session["Table"] = table;

        e.Cancel = true;
    }
    protected void grid_CardInserting(object sender, DevExpress.Web.Data.ASPxDataInsertingEventArgs e)
    {
        ASPxCardView grid = sender as ASPxCardView;

        DataTable table = GetTable();
        table.Rows.Add(new Object[] { e.NewValues["ID"], e.NewValues["Name"] });

        Session["Table"] = table;

        e.Cancel = true;
        grid.CancelEdit();
    }
    protected void grid_CardUpdating(object sender, DevExpress.Web.Data.ASPxDataUpdatingEventArgs e)
    {
        ASPxCardView grid = sender as ASPxCardView;

        DataTable table = GetTable();
        DataRow found = table.Rows.Find(e.Keys[0]);
        found["Name"] = e.NewValues["Name"];

        Session["Table"] = table;

        e.Cancel = true;
        grid.CancelEdit();
    }
See Also