问Delphi在将多个CSV文件导入到数据集中时速度变慢EN一、将列表数据写入txt、csv、excel 1、写入txt def text_save(filename, data):#filename为写入CSV文件的路径，data为要写入数据列表. file = open(filename,'a') for i in range(len(data)): s = str(data[i]).replace('[',''...
XmlDataSet.RecNo:=frxUserDataSet4.RecNo+1; Value:=XmlDataSet.FieldByName(FieldName).AsString;
在进行数据检索之前,调用数据表的DisableControls方法,将DataSet和 DataSource组件的联系断开,当检索结束时,调用数据表的EnableControls方法,重新在DataSet和 DataSource组件之间建立联系,这样就可以节省更新数据控制的时间,从而加速检索的速度。下面是一个实例: unit Unit1; . . type TForm1 = class(TForm) DataSource1...
if (DBGrid1.DataSource.DataSet.FieldByName('填制调单时间').AsDateTime >DBGrid1.DataSource.DataSet.FieldByName('应发货时间').AsDateTime) then AFont.Color := clRed; if (Column.Field.FieldName = '移交时间') then if (DBGrid1.DataSource.DataSet.FieldByName('移交时间').AsDateTime >DBGrid1.Data...
Which column contains the epi year? Which column contains the epi week? Which column contains dates?
Allows to export data to Text, Csv, HTML, RTF, XLS and internal formats. Allows to import data from Text and internal formats. Can sort data in various dataset's. Can filter data in various dataset's. When DBGridEh is connected to DataSet of TMemTable type it allows: To view all data...
(nil); try OpenDialog1.FileName:=*.csv;*.xls; if not OpenDialog1.Execute then begin Result := false; exit; end; MsExcel := CreateOleObject(Excel.Application); MsExcelWorkBook := msExcel.Workbooks.Open(OpenDialog1.FileName); MsExcelWorkSheet := msExcel.Worksheets.Item[1]; except Result...
You can write this event to change sorting and reopen in dataset. Use SortMarkedColumns property to access to sortmarked columns. 标题属性的默认值 使用TDBGridEh.ColumnDefValues.Title来设置标题属性的默认值。 定制网格页脚 页脚以及统计值 TDBGridEh allows to show special row (footer) or rows at ...
New! TMVCAnalyticsMiddleware to do automatic analytics on the API (generates a CSV file). Based on an idea by Nirav Kaku (https://www.facebook.com/nirav.kaku). Check the sample in \samples\middleware_analytics\ New! TMVCActiveRecord.DeleteAll deletes all the records from a table New!
The static method class procedure TFireDACUtils.CreateDatasetFromMetadata( AFDMemTable: TFDMemTable; AMeta: TJSONObject); gets the previous structure and initialize the fields of AFDMemTable with it. When a TFDMemTable is initialized using this approach, the data can be directly loaded from ...