/// <summary>
/// 更新记录状态
/// </summary>
/// <param name="dataRow">记录</param>
/// <param name="updateType">操作类型</param>
private void SetRowState(DataRow dataRow, UpdateType updateType)
{
if (dataRow.RowState != DataRowState.Unchanged) return;
if (updateType == UpdateType.Add)
dataRow.SetAdded();
if (updateType == UpdateType.Modify)
dataRow.SetModified();
}
private void CreateRow(EntityObject entityObject, DataRow parentRow, Dictionary<EntityKey, EntityState> states, DataSet dataset)
{
var tableName = entityObject.GetType().Name;
var dataTable = dataset.Tables[tableName];
var state = GetState(entityObject, states, parentRow);
DataRow dataRow = null;
if (state == EntityState.Added) {
dataRow = dataTable.NewRow();
ApplyValue(dataRow, entityObject);
dataTable.Rows.Add(dataRow);
ApplyRelationValue(dataRow, parentRow, dataset);
if (parentRow != null && parentRow.RowState == DataRowState.Unchanged)
{
parentRow.SetModified();
}
}
else {
dataRow = dataTable.Rows.Find(entityObject.EntityKey.EntityKeyValues.Select(c => c.Value).ToArray());
if (dataRow != null)
{
if (state == EntityState.Deleted)
{
dataRow.Delete();
}
else
{
ApplyValue(dataRow, entityObject);
}
}
}
var navigationProperties = entityObject.GetType().GetProperties().Where(c => typeof(IList).IsAssignableFrom(c.PropertyType));
foreach (var navigationProperty in navigationProperties) {
var navigationValue = (IList)navigationProperty.GetValue(entityObject, null);
foreach (EntityObject childObject in navigationValue) {
CreateRow(childObject, dataRow, states, dataset);
}
}
}
//刷新缓存记录的数据
protected void UpdateSummaryRowState(DataRow dataRow)
{
dataRow.AcceptChanges();
if (_UpdateType == UpdateType.Modify) dataRow.SetModified();
if (_UpdateType == UpdateType.Add) dataRow.SetAdded();
}
