我有一个TFDTable
连接到一个TGrid
usingLiveBindings
并且数据显示按表本身的索引排序。我希望能够通过单击网格的标题来更改排序顺序。这是我到目前为止所做的:
void __fastcall TmainFrm::Grid7HeaderClick(TColumn *Column)
{
if(IBS_EntityTable->IndexName == Column->Header)
return; // if it is being sorted by the same column, don't do anything
try
{
TFDIndex* pIndex;
IBS_EntityTable->Indexes->BeginUpdate();
IBS_EntityTable->Indexes->Clear();
pIndex = IBS_EntityTable->Indexes->Add();
pIndex->Name = Column->Header;
pIndex->Fields = Column->Header;
pIndex->Active = true;
IBS_EntityTable->IndexName = pIndex->Name;
}
__finally
{
IBS_EntityTable->Indexes->EndUpdate();
IBS_EntityTable->Refresh();
}
}
但排序顺序不会改变。事实上,唯一改变的数据是选定的行。我究竟做错了什么?
谢谢
山姆