/// <summary>
/// Asynchronously updates the property with the given value from the element.
/// </summary>
/// <param name="value">The value to set on the data property.</param>
protected virtual async Task UpdatePropertyAsync(object value)
{
if (property != null && !PreventModelUpdate)
{
bool b = PreventElementUpdate;
PreventElementUpdate = true;
property.SetEditing(true, row);
await property.SetValueAsync(value, row);
PreventElementUpdate = b;
}
}
/// <summary>
/// Sets the values of the given data row or, if the row is null,
/// the data object from the given data contract object
/// by copying the values of the data contract object fields to the
/// data object properties or child objects with the same names.
/// If there is no exact match between some data contract field names
/// and the data object property names, this method can be overridden
/// in the subclass to address each such case.
/// </summary>
/// <param name="dataContract">The data contract object to copy the values from.</param>
/// <param name="options">Additional options for the operation.</param>
/// <param name="row">The row to set the values for.
/// <param name="token">Cancellation token.</param>
/// Null to set values of the current data object.</param>
protected async Task FromDataContractAsync(object dataContract, object options, DataRow row,
CancellationToken token = default)
{
if (dataContract == null)
{
return;
}
SetModified(false, false);
foreach (PropertyInfo pi in dataContract.GetType().GetProperties())
{
object val = pi.GetValue(dataContract, null);
DataProperty dp = this[pi.Name];
DataObject child;
if (dp != null)
{
dp.Modified = null;
await dp.SetValueAsync(val, row, token);
}
else if ((child = GetChildObject(pi.Name)) != null)
{
await child.FromDataContractAsync(val, options, token);
}
else if (val != null)
{
foreach (PropertyInfo cpi in pi.PropertyType.GetProperties())
{
DataProperty cdp = this[pi.Name + "_" + cpi.Name];
if (cdp != null)
{
cdp.Modified = null;
await cdp.SetValueAsync(cpi.GetValue(val, null), row, token);
}
}
}
}
}