开发excel,免不了要开发excel的chart:
1 #region operate chart 2 //创建chart对象 3 Excel.Chart chart = m_objExcel.Charts.Add(Type.Missing, Ocuurent_sheet, Type.Missing, Type.Missing) as Excel.Chart; 4 //chart类型 5 chart.ChartType = Excel.XlChartType.xlLineMarkers; 6 //chart.set_HasAxis(); 7 //设置chart对应excel的sheet里的数据矩阵范围 8 chartrange = Ocuurent_sheet.get_Range(Ocuurent_sheet.Cells[2, 2], Ocuurent_sheet.Cells[5, (1 + Ds_occurent.Tables[0].Columns.Count)]); 9 //绑定数据 10 //chart.SetSourceData(chartrange,Excel.XlRowCol.xlRows); 11 12 chart.HasLegend = true; 13 //标题 14 chart.HasTitle = true; 15 //标题名称 16 chart.ChartTitle.Text = "HUB occurrence"; 17 chart.Legend.Position = Excel.XlLegendPosition.xlLegendPositionBottom; 18 //设置excely和x轴 19 Excel.Axis categoryAxis = (Excel.Axis)m_objExcel.ActiveChart.Axes(Excel.XlAxisType.xlCategory, Excel.XlAxisGroup.xlPrimary); 20 categoryAxis.CategoryType = Excel.XlCategoryType.xlCategoryScale; 21 Excel.Series se = (Excel.Series)chart.SeriesCollection(3); 22 //chart颜色设置 23 se.Border.ColorIndex = 5; 24 se = (Excel.Series)chart.SeriesCollection(2); 25 se.Border.ColorIndex = 6; 26 se = (Excel.Series)chart.SeriesCollection(1); 27 se.Border.ColorIndex = 3; 28 //se.MarkerBackgroundColorIndex = 5; 29 //se.MarkerStyle = Excel.XlMarkerStyle.xlMarkerStyleStar; 30 chart.Location(Excel.XlChartLocation.xlLocationAsObject, Ocuurent_sheet.Name); 31 //chart位置 32 Ocuurent_sheet.Shapes.Item(1).IncrementTop(-116); 33 Ocuurent_sheet.Shapes.Item(1).IncrementLeft(-166); 34 float a = 0.84f; 35 //chart大小 36 Ocuurent_sheet.Shapes.Item(1).ScaleHeight(a, MsoTriState.msoFalse, MsoScaleFrom.msoScaleFromTopLeft); 37 #endregion
如果我们使用.net的com,那么我们可以对excel的增益集合进行录制(工具--》增益集合--》录制增益集),录制完后,我们然后打开vba编辑器,查看相应的代码。我们根据vba代码来写c#代码,进行稍微的改动就可以用了。VBA操作看这里
加上一个小东西:
我们在读excel的时候不用text二世用value2的时候,读取时间有时候会是double类型,那么我们怎么样把它转换成时间类型?DateTime.FromOADate
double转换成时间如下:
1 DateTime getDate = new DateTime(2009, 12, 30); 2 double Number = getDate.ToOADate();// convert the datetime to double 3 4 //double doubleValue = 0; 5 DateTime doubleDate = DateTime.FromOADate(Number);// convert the double to datetime 6 7 Console.WriteLine(Number);//0 8 9 Console.WriteLine(doubleDate.ToString());//12/30/2009 12:00:00 AM 10 Console.WriteLine(doubleDate.ToString("yyyyMMdd HH:mm:ss"));//20091230 00:00:00 11