private async void _addCategoryBtn_Click(Object sender, EventArgs e)
{
InputNameDialog inputNameDialog = new InputNameDialog();
if (inputNameDialog.ShowDialog() == DialogResult.OK)
{
await _storage.AddCategory(currentCategoryId, inputNameDialog.InputName);
var categories = await _storage.GetCategories(currentCategoryId);
currentCategoryId = 0;
_categoriesList.DataSource = categories;
}
}