private void LoadDataObject()
{
ITreeListViewHoster treeListHoster = _TreeListHoster;
IList lstDatas = null;
try {
int id = (int)_SortingNode.GetValue(_TreeListHoster.TreeViewCfg.KeyFieldName);
MB.Util.Model.QueryParameterInfo[] queryParams = new Util.Model.QueryParameterInfo[1];
queryParams[0] = new Util.Model.QueryParameterInfo(_TreeListHoster.TreeViewCfg.ParentFieldName, id, Util.DataFilterConditions.Equal);
lstDatas = _ClientRuleObject.GetObjects((int)_ClientRuleObject.MainDataTypeInDoc, queryParams);
}
catch (Exception ex) {
throw MB.Util.APPExceptionHandlerHelper.PromoteException(ex, "DefaultTreeListViewForm.GetObjects 出错！");
}
if (_BindingSource == null)
{
IBindingList bl = _ClientRuleObject.CreateMainBindList(lstDatas);
_BindingSource = new MB.WinBase.Binding.BindingSourceEx();
_BindingSource.DataSource = bl;
treeListHoster.CreateTreeListViewDataBinding(trvLstMain, _BindingSource);
if (trvLstMain.Nodes.Count > 0)
{
trvLstMain.Nodes[0].Expanded = true;
trvLstMain.FocusedNode = trvLstMain.Nodes[0];
}
}
else
{
treeListHoster.RefreshTreeListData(trvLstMain, lstDatas);
}
}
protected override void LoadObjectData(MB.Util.Model.QueryParameterInfo[] queryParams)
{
if (_ClientRuleObject == null)
{
throw new MB.Util.APPException("在加载浏览窗口<DefaultViewForm>时 需要配置对应的ClientRule 类！");
}
if (_ClientRuleObject.ClientLayoutAttribute == null)
{
throw new MB.Util.APPException(string.Format("对于客户段逻辑类 {0} ,需要配置 RuleClientLayoutAttribute.", _ClientRuleObject.GetType().FullName));
}
ITreeListViewHoster treeListHoster = _TreeListHoster;
try {
using (MB.WinBase.WaitCursor cursor = new MB.WinBase.WaitCursor(this)) {
if (_ClientRuleObject.ClientLayoutAttribute.CommunicationDataType == CommunicationDataType.DataSet)
{
throw new MB.Util.APPException("树型浏览主界面暂时不支持DataSet 的绑定", MB.Util.APPMessageType.SysErrInfo);
}
else
{
IList lstDatas = null;
try {
lstDatas = _ClientRuleObject.GetObjects((int)_ClientRuleObject.MainDataTypeInDoc, queryParams);
}
catch (Exception ex) {
throw MB.Util.APPExceptionHandlerHelper.PromoteException(ex, "DefaultTreeListViewForm.GetObjects 出错！");
}
if (_BindingSource == null || _RecreateTreeAfterSorting)
{
IBindingList bl = _ClientRuleObject.CreateMainBindList(lstDatas);
_BindingSource = new MB.WinBase.Binding.BindingSourceEx();
_BindingSource.ListChanged += new ListChangedEventHandler(_BindingSource_ListChanged);
_BindingSource.DataSource = bl;
treeListHoster.CreateTreeListViewDataBinding(trvLstMain, _BindingSource);
if (trvLstMain.Nodes.Count > 0)
{
trvLstMain.Nodes[0].Expanded = true;
trvLstMain.FocusedNode = trvLstMain.Nodes[0];
}
_RecreateTreeAfterSorting = false;
}
else
{
treeListHoster.RefreshTreeListData(trvLstMain, lstDatas);
}
}
panTitle.Visible = false;
}
}
catch (MB.Util.APPException aex) {
throw aex;
}
catch (Exception ex) {
throw MB.Util.APPExceptionHandlerHelper.PromoteException(ex, "在浏览窗口DefaultTreeListViewForm_Load 时出错！");
}
}
/// <summary>
/// 设置控件数据源。
/// </summary>
/// <param name="clientRule"></param>
/// <param name="dataSource"></param>
public void SetDataSource(IClientRuleQueryBase clientRule, object dataSource)
{
IList lstDatas = dataSource as IList;
if (lstDatas == null)
{
throw new MB.Util.APPException("目前树型浏览列表只支持IList 数据类型", MB.Util.APPMessageType.SysErrInfo);
}
_TreeListHoster = clientRule as ITreeListViewHoster;
if (_TreeListHoster == null)
{
throw new MB.Util.APPException("获取树型列表数据的业务对象必须继承 ITreeListViewHoster 接口。", MB.Util.APPMessageType.SysErrInfo);
}
MB.WinBase.Binding.BindingSourceEx bindingSource = new MB.WinBase.Binding.BindingSourceEx();
bindingSource.DataSource = dataSource;
_TreeListHoster.CreateTreeListViewDataBinding(trvLstMain, bindingSource);
trvLstMain.DataSource = lstDatas; //add by aifang 2012-04-17 数据绑定无效，重新对控件数据源赋值
trvLstMain.RefreshDataSource();
if (trvLstMain.Nodes.Count > 0)
{
trvLstMain.Nodes[0].Expanded = true;
trvLstMain.FocusedNode = trvLstMain.Nodes[0];
}
}