protected override void OnDetachingFrom(SampleView bindable)
{
optionsList.SelectedIndexChanged -= OnFilterOptionsChanged;
columnsList.SelectedIndexChanged -= OnColumnsSelectionChanged;
filterText.TextChanged -= OnFilterTextChanged;
dataGrid = null;
optionsList = null;
columnsList = null;
filterText = null;
base.OnDetachingFrom(bindable);
}
/// <summary>
/// You can override this method while View was detached from window
/// </summary>
/// <param name="bindAble">SampleView type of bindAble parameter</param>
protected override void OnDetachingFrom(SampleView bindAble)
{
this.optionsList.SelectedIndexChanged -= this.OnFilterOptionsChanged;
this.columnsList.SelectedIndexChanged -= this.OnColumnsSelectionChanged;
this.filterText.TextChanged -= this.OnFilterTextChanged;
this.dataGrid = null;
this.optionsList = null;
this.columnsList = null;
this.filterText = null;
base.OnDetachingFrom(bindAble);
}
protected override void OnAttachedTo(SampleView bindable)
{
viewModel = new FilteringViewModel();
dataGrid = bindable.FindByName <Syncfusion.SfDataGrid.XForms.SfDataGrid>("dataGrid");
bindable.BindingContext = viewModel;
optionsList = bindable.FindByName <PickerExt>("OptionsList");
columnsList = bindable.FindByName <PickerExt>("ColumnsList");
filterText = bindable.FindByName <SearchBarExt>("filterText");
optionsList.Items.Add("Equals");
optionsList.Items.Add("NotEquals");
optionsList.Items.Add("Contains");
columnsList.Items.Add("All Columns");
columnsList.Items.Add("CustomerID");
columnsList.Items.Add("BookID");
columnsList.Items.Add("FirstName");
columnsList.Items.Add("LastName");
columnsList.Items.Add("BookName");
columnsList.SelectedIndex = 0;
viewModel.filtertextchanged = OnFilterChanged;
filterText.TextChanged += OnFilterTextChanged;
columnsList.SelectedIndexChanged += OnColumnsSelectionChanged;
optionsList.SelectedIndexChanged += OnFilterOptionsChanged;
base.OnAttachedTo(bindable);
}