(转)C#操作Excel进行报表开发

http://www.cnblogs.com/dahuzizyd/archive/2007/04/11/CSharp_Excel_Report_Chart_All.html

C#操作Excel进行报表开发系列共写了八篇,也已经有很久没有新东西了,现在整理一下,方便以后查阅,如果有写新的,会同时更新。
需要注意的是因为Office的版本不同,实际的代码可能会有所不同,但是都是多几个,少几个参数,补上参数System.Reflection.Missing.Value就可以了


将Excel应用于报表开发中(一)--开始

使用C#和Excel进行报表开发(二)-操作统计图(Chart)

使用C#和Excel进行报表开发(三)-生成统计图(Chart)

使用C#和Excel进行报表开发(四)-复制单元格

使用C#和Excel进行报表开发(五)-操作单元格边框和颜色

使用C#和Excel进行报表开发(六)-操作行和列

使用C#和Excel进行报表开发(七)-设置单元格的显示格式

 

将Excel应用于报表开发中(一)--开始

目前的商业工具如水晶报表,ActiveReport等,都提供了灵活,强大的功能,但是对于比较特殊化的表格,特别是国内的一些应用,都是一个个的格子组成的,这样要是用线来一根根画就比较麻烦,但是这类工具还都不提供表格化的报表布局定义方式。一个很好的选择是VS2005的客户端报表(RDLC),但是在某几个方面还是不够灵活,例如,灵活性有限制,要想自己编码实现一些复杂逻辑还是有困难;要VS2005,对于一些还在使用VS2003的项目就只有眼馋的份了。用Excel来实现,优点在于页面布局设计灵活,同时使用代码来操作数据要更灵活,更精确。

下面是一个简单的例子,打开一个定义好的Excel文件,这个文件是作为报表的模板,然后向模板的指定格子里填充数据,形成一个报表,在web方式下可以按照指定的命名方式在服务器上生成一个excel文件,之后传送到客户端,由客户端启动excel进行打印。

 

Excel.Application m_objExcel = null;

Excel._Workbook m_objBook
= null;

Excel.Sheets m_objSheets
= null;

Excel._Worksheet m_objSheet
= null;

Excel.Range m_objRange
= null;



object m_objOpt = System.Reflection.Missing.Value;

try

{

m_objExcel
= new Excel.Application();

m_objBook
= m_objExcel.Workbooks.Open("z:\\Book1.xls", m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt);



m_objSheets
= (Excel.Sheets)m_objBook.Worksheets;

m_objSheet
= (Excel._Worksheet)(m_objSheets.get_Item(1));





string[] info = new string[5] { "Cure", "26", "dahuzizyd.cnblogs.com", "", "按时 ?放奥斯丁奥斯丁非是否奥斯丁非" };

m_objRange
= m_objSheet.get_Range("B1", m_objOpt);

m_objRange.Value
= info[0];

m_objRange
= m_objSheet.get_Range("E1", m_objOpt);

m_objRange.Value
= info[1];

m_objRange
= m_objSheet.get_Range("B2", m_objOpt);

m_objRange.Value
= info[2];

m_objRange
= m_objSheet.get_Range("E2", m_objOpt);

m_objRange.Value
= info[3];

m_objRange
= m_objSheet.get_Range("A3", m_objOpt);

m_objRange.Value
= info[4];



m_objExcel.DisplayAlerts
= false;



m_objBook.SaveAs(
"z:\\Book2.xls", m_objOpt, m_objOpt,

m_objOpt, m_objOpt, m_objOpt, Excel.XlSaveAsAccessMode.xlNoChange,

m_objOpt, m_objOpt, m_objOpt, m_objOpt);



}

catch (Exception ex)

{

MessageBox.Show(ex.Message);

}

finally

{

m_objBook.Close(m_objOpt, m_objOpt, m_objOpt);

m_objExcel.Workbooks.Close();

m_objExcel.Quit();

System.Runtime.InteropServices.Marshal.ReleaseComObject(m_objBook);

System.Runtime.InteropServices.Marshal.ReleaseComObject(m_objExcel);

m_objBook
= null;

m_objExcel
= null;

GC.Collect();

}

 

 

 

可以看到,使用Excel要进行一部分的编码,好在这部分还不太复杂,但是最大的问题就在于当报表需求变更时,要重新编译部署,而且当格子特别多的时候,要这样硬编码还是挺痛苦的一件事。不过使用Excel毕竟给我们提供了一种选择,可以在开发时对多种方案权衡利弊,使用最适合项目的。

 

使用C#和Excel进行报表开发(二)-操作统计图(Chart)
 

下面的代码使用一个现有的统计图Excel文件,加载这个文件,设置某一项的值和统计图的表示方式,然后保存到另一个Excel文件里。如果是VS2005+Office2003,也可以选择使用Visual Studio Tools for Office来作。

Excel.Application m_objExcel = null;

Excel._Workbook m_objBook = null;

Excel._Chart m_objChart = null;

Excel.ChartGroup m_objChartGroup = null;

Excel.Series m_objSeries = null;

object m_objOpt = System.Reflection.Missing.Value;

try

{

        m_objExcel = new Excel.Application();

        m_objBook = m_objExcel.Workbooks.Open("z:\\Book11.xls", m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt);

        m_objChart = (Excel._Chart)m_objExcel.Charts.get_Item(1);

        m_objChart.BarShape = Excel.XlBarShape.xlCylinder;

        m_objChartGroup = (Excel.ChartGroup)m_objChart.ChartGroups(1);

        m_objSeries = (Excel.Series)m_objChartGroup.SeriesCollection(1);

                               

        m_objSeries.Values = 456;

        m_objExcel.DisplayAlerts = false;

 

        m_objBook.SaveAs("z:\\Book2.xls", m_objOpt, m_objOpt,

                                        m_objOpt, m_objOpt, m_objOpt, Excel.XlSaveAsAccessMode.xlNoChange,

                                m_objOpt, m_objOpt, m_objOpt, m_objOpt);

 

                        }

catch (Exception ex)

{

        MessageBox.Show(ex.Message);

}

finally

{

        m_objBook.Close(m_objOpt, m_objOpt, m_objOpt);

        m_objExcel.Workbooks.Close();

 

        m_objExcel.Quit();

                System.Runtime.InteropServices.Marshal.ReleaseComObject(m_objBook);

                                System.Runtime.InteropServices.Marshal.ReleaseComObject(m_objExcel);

        m_objBook = null;

        m_objExcel = null;

        GC.Collect();

        this.Close();

}

源Excel文件中的统计图:

经过代码处理后保存的统计图:

使用C#和Excel进行报表开发(三)-生成统计图(Chart)

有的Web项目选用Excel作为报表方案,在服务器端生成Excel文件,然后传送到客户端,由客户端进行打印。在国内的环境下,相对PDF方式,Excel的安装率应该比pdf阅读器的安装率要高,同时,微软也为C#操作Excel提供了完备的接口,虽然ZedGraph和其他的商业报表工具生成的统计图也很好,但是人家微软毕竟是大品牌,值得信赖。

本文介绍使用C#调用Excel来生成统计图(Chart)的以及Chart图中各部分控制的一些方法。

 

在上一篇使用C#和Excel进行报表开发(二)-操作统计图(Chart)中,我们使用一个预定义的Excel文件,通过改变Chart中的某个值来生成统计图。本文进一步演示如何从指定的数据从头生成统计图。

 

首先当然要添加对Excel的引用,然后需要定义几个要用到的Excel对象:

 

Excel.Application ThisApplication = null;

Excel.Workbooks m_objBooks
= null;

Excel._Workbook ThisWorkbook
= null;

Excel.Worksheet xlSheet
= null;

 

在创建一个新的_WorkBook对象的时候,默认的会含有3个Sheet,所以为了显示清晰,将多余的Sheet都删掉:

 

private void DeleteSheet()

{

foreach (Excel.Worksheet ws in ThisWorkbook.Worksheets)

if (ws != ThisApplication.ActiveSheet)

{

ws.Delete();

}

foreach (Excel.Chart cht in ThisWorkbook.Charts)

cht.Delete();



}

 

再下来需要添加用来给Chart提供数据的Sheet:

 

private void AddDatasheet()

{

xlSheet
= (Excel.Worksheet)ThisWorkbook.

Worksheets.Add(Type.Missing, ThisWorkbook.ActiveSheet,

Type.Missing, Type.Missing);



xlSheet.Name
= "数据";

}

 

生成Chart用到的数据,因为是演示,所以这里使用生成随机数的方法来替代从数据库中提取数据。

 

private void LoadData()

{

Random ran
= new Random();

for (int i = 1; i <= 12; i++)

{

xlSheet.Cells[i,
1] = i.ToString() + "";

xlSheet.Cells[i,
2] = ran.Next(2000).ToString();

}

}

 

好了,到此,准备工作全部已经就绪,下面要进行Chart的生成设置部分了:

生成一个统计图对象:

 

Excel.Chart xlChart = (Excel.Chart)ThisWorkbook.Charts.

Add(Type.Missing, xlSheet, Type.Missing, Type.Missing);



设定数据来源:

Excel.Range cellRange
= (Excel.Range)xlSheet.Cells[1, 1];



通过向导生成Chart:

xlChart.ChartWizard(cellRange.CurrentRegion,

Excel.XlChartType.xl3DColumn, Type.Missing,

Excel.XlRowCol.xlColumns,
1, 0, true ,

"访问量比较(dahuzizyd.cnblogs.com)", "月份", "访问量",

"");



到此,Chart的生成就完成了,貌似比较简单,下面我们对其作一些设置,好更漂亮些。

设置统计图Sheet的名称:

xlChart.Name
= "统计";

现在的统计图只有一个组,他们会显示成一样的颜色,我们来让12个Bar都显示不同的颜色:

 

Excel.ChartGroup grp = (Excel.ChartGroup)xlChart.ChartGroups(1);

grp.GapWidth
= 20;

grp.VaryByCategories
= true;

现在Chart的条目的显示形状是Box,我们让它们变成圆柱形,并给它们显示加上数据标签:

 

Excel.Series s = (Excel.Series)grp.SeriesCollection(1);

s.BarShape
= XlBarShape.xlCylinder;

s.HasDataLabels
= true;

下面再来设置统计图的标题和图例的显示:

 

xlChart.Legend.Position = XlLegendPosition.xlLegendPositionTop;

xlChart.ChartTitle.Font.Size
= 24;

xlChart.ChartTitle.Shadow
= true;

xlChart.ChartTitle.Border.LineStyle
= Excel.XlLineStyle.xlContinuous;

 

最后设置两个轴的属性,Excel.XlAxisType.xlValue对应的是Y轴,Excel.XlAxisType.xlCategory对应的是X轴:

 

Excel.Axis valueAxis = (Excel.Axis)xlChart.Axes(Excel.XlAxisType.xlValue, XlAxisGroup.xlPrimary);

valueAxis.AxisTitle.Orientation
= -90;



Excel.Axis categoryAxis
= (Excel.Axis)xlChart.Axes(Excel.XlAxisType.xlCategory, XlAxisGroup.xlPrimary);

categoryAxis.AxisTitle.Font.Name
= "MS UI Gothic";



 

 

 

到此,一切就绪了,下面要生成Chart,并将其存为一个Excel文件:

try
{
ThisApplication
= new Excel.Application();
m_objBooks
= (Excel.Workbooks)ThisApplication.Workbooks;
ThisWorkbook
= (Excel._Workbook)(m_objBooks.Add(Type.Missing));

ThisApplication.DisplayAlerts
= false;

this.DeleteSheet();
this.AddDatasheet();
this.LoadData();

CreateChart();

ThisWorkbook.SaveAs(
"z:\\Book2.xls", Type.Missing, Type.Missing,
Type.Missing, Type.Missing, Type.Missing, Excel.XlSaveAsAccessMode.xlNoChange,
Type.Missing, Type.Missing, Type.Missing, Type.Missing);

}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
ThisWorkbook.Close(Type.Missing, Type.Missing, Type.Missing);
ThisApplication.Workbooks.Close();

ThisApplication.Quit();
System.Runtime.InteropServices.Marshal.ReleaseComObject(ThisWorkbook);
System.Runtime.InteropServices.Marshal.ReleaseComObject(ThisApplication);
ThisWorkbook
= null;
ThisApplication
= null;
GC.Collect();
this.Close();
}

运行你的程序,打开生成的Excel文件,最终生成的Chart应该像这样:

完成了Chart的生成,但是上面对于每个月只有一项数据,如果我想显示多项呢,例如显示每个月两个页面的范围量的对比。方法很简单,只要再多生成一组数据就可以了,我们修改下LoadData方法:

 

private void LoadData()

{

Random ran
= new Random();

for (int i = 1; i <= 12; i++)

{

xlSheet.Cells[i,
1] = i.ToString() + "";

xlSheet.Cells[i,
2] = ran.Next(2000).ToString();

xlSheet.Cells[i,
3] = ran.Next(1500).ToString();

}

}


 


再次运行程序,生成Chart看看,应该像下面的效果:

可以看到,两组数据以不同的形状显示,同时,图例部分也不再显示1-12月共12项,而是显示两项,这是因为在上面的代码中我们设置了ChartGroup的VaryByCategories 属性:

grp.VaryByCategories = true;当我们有两个以上的组时,这一项就失效了。

 

在用C#操作Excel的时候,恐怕最大的困难就在于不知道Excel提供的各个对象,以及它们的属性,方法等信息,好在MSDN里有关于Excel的接口说明-Excel Primary Interop Assembly Reference,参照这些,相信很快就能上手了。

最后是完整代码:

 

private void button4_Click(object sender, EventArgs e)
{
try
{
ThisApplication
= new Excel.Application();
m_objBooks
= (Excel.Workbooks)ThisApplication.Workbooks;
ThisWorkbook
= (Excel._Workbook)(m_objBooks.Add(Type.Missing));

ThisApplication.DisplayAlerts
= false;

this.DeleteSheet();
this.AddDatasheet();
this.LoadData();

CreateChart();

ThisWorkbook.SaveAs(
"z:\\Book2.xls", Type.Missing, Type.Missing,
Type.Missing, Type.Missing, Type.Missing, Excel.XlSaveAsAccessMode.xlNoChange,
Type.Missing, Type.Missing, Type.Missing, Type.Missing);

}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
finally
{
ThisWorkbook.Close(Type.Missing, Type.Missing, Type.Missing);
ThisApplication.Workbooks.Close();

ThisApplication.Quit();
System.Runtime.InteropServices.Marshal.ReleaseComObject(ThisWorkbook);
System.Runtime.InteropServices.Marshal.ReleaseComObject(ThisApplication);
ThisWorkbook
= null;
ThisApplication
= null;
GC.Collect();
this.Close();
}

}

Excel.Application ThisApplication
= null;
Excel.Workbooks m_objBooks
= null;
Excel._Workbook ThisWorkbook
= null;

Excel.Worksheet xlSheet
= null;

/**//// <summary>
/// 用生成的随机数作数据
/// </summary>
private void LoadData()
{
Random ran
= new Random();
for (int i = 1; i <= 12; i++)
{
xlSheet.Cells[i,
1] = i.ToString() + "";
xlSheet.Cells[i,
2] = ran.Next(2000).ToString();
}
}
/**//// <summary>
/// 删除多余的Sheet
/// </summary>
private void DeleteSheet()
{
foreach (Excel.Worksheet ws in ThisWorkbook.Worksheets)
if (ws != ThisApplication.ActiveSheet)
{
ws.Delete();
}
foreach (Excel.Chart cht in ThisWorkbook.Charts)
cht.Delete();

}
/**//// <summary>
/// 创建一个Sheet,用来存数据
/// </summary>
private void AddDatasheet()
{
xlSheet
= (Excel.Worksheet)ThisWorkbook.
Worksheets.Add(Type.Missing, ThisWorkbook.ActiveSheet,
Type.Missing, Type.Missing);

xlSheet.Name
= "数据";
}
/**//// <summary>
/// 创建统计图
/// </summary>
private void CreateChart()
{
Excel.Chart xlChart
= (Excel.Chart)ThisWorkbook.Charts.
Add(Type.Missing, xlSheet, Type.Missing, Type.Missing);

Excel.Range cellRange
= (Excel.Range)xlSheet.Cells[1, 1];
xlChart.ChartWizard(cellRange.CurrentRegion,
Excel.XlChartType.xl3DColumn, Type.Missing,
Excel.XlRowCol.xlColumns,
1, 0, true ,
"访问量比较(dahuzizyd.cnblogs.com)", "月份", "访问量",
"");

xlChart.Name
= "统计";

Excel.ChartGroup grp
= (Excel.ChartGroup)xlChart.ChartGroups(1);
grp.GapWidth
= 20;
grp.VaryByCategories
= true;

Excel.Series s
= (Excel.Series)grp.SeriesCollection(1);
s.BarShape
= XlBarShape.xlCylinder;
s.HasDataLabels
= true;

xlChart.Legend.Position
= XlLegendPosition.xlLegendPositionTop;
xlChart.ChartTitle.Font.Size
= 24;
xlChart.ChartTitle.Shadow
= true;
xlChart.ChartTitle.Border.LineStyle
= Excel.XlLineStyle.xlContinuous;

Excel.Axis valueAxis
= (Excel.Axis)xlChart.Axes(Excel.XlAxisType.xlValue, XlAxisGroup.xlPrimary);
valueAxis.AxisTitle.Orientation
= -90;

Excel.Axis categoryAxis
= (Excel.Axis)xlChart.Axes(Excel.XlAxisType.xlCategory, XlAxisGroup.xlPrimary);
categoryAxis.AxisTitle.Font.Name
= "MS UI Gothic";
}

 

 

使用C#和Excel进行报表开发(四)-复制单元格

在用Excel作报表的时候,可能会碰到分页的情况,这样就要分成多个Sheet显示,如果要在每页都保留表头,就需要将第一页作为模板设计的表头部分拷贝到其他的Sheet上,这时就要用用到Excel中的单元格拷贝。

下面的代码说明如何一个Sheet上的选定内容拷贝到另一个Sheet上:

 

ThisApplication = new Excel.Application();

ThisWorkbook
= ThisApplication.Workbooks.Open("z:\\Book1.xls", Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);

ThisApplication.DisplayAlerts
= false;

xlSheet
= (Excel.Worksheet)ThisWorkbook.Worksheets.get_Item(1);



Excel.Range range
= xlSheet.get_Range("A1", Type.Missing);

range.Value
= "123";

Excel.Worksheet sheet1
= (Excel.Worksheet)ThisWorkbook.Worksheets.get_Item(2);

Excel.Range range1
= sheet1.get_Range("B1", Type.Missing);

range.Copy(range1);



ThisWorkbook.SaveAs(
"z:\\Book2.xls", Type.Missing, Type.Missing,

Type.Missing, Type.Missing, Type.Missing, Excel.XlSaveAsAccessMode.xlNoChange,

Type.Missing, Type.Missing, Type.Missing, Type.Missing);

 

 

        

可以看到,核心的代码是很简单的,就是选定一个源区域,然后指定另一个目标区域,调用源区域的Copy方法将内容整个复制到目标区域,但是你会发现是连单元格的格式等属性一并拷贝过去的,如果要只拷贝单元格中的文本呢?那就要用到windows剪贴板了:

 

xlSheet = (Excel.Worksheet)ThisWorkbook.Worksheets.get_Item(1);

Excel.Range range
= xlSheet.get_Range("A1", Type.Missing);

range.Value
= "123";

System.Windows.Forms.Clipboard.SetDataObject(range.Value.ToString());

Excel.Worksheet sheet1
= (Excel.Worksheet)ThisWorkbook.Worksheets.get_Item(2);

Excel.Range range1
= sheet1.get_Range("B1", Type.Missing);

sheet1.Paste(range1,
false);

 

 

要注意的是,这种方式只能选一个单元格,复制一个,不能选定一批单元格进行复制。

 

上面的例子只给出了主要部分的代码,其他的像销毁Excel进程等操作请参考前面的几篇Excel作报表的随笔。

 

 

 

使用C#和Excel进行报表开发(五)-操作单元格边框和颜色

在用Excel作报表的时候,可能需要操作单元格的边框和填充颜色和纹理等操作,下面的代码说明如何设置选中的单元格的填充纹理和边框

 

try

{

ThisApplication
= new Excel.Application();



ThisWorkbook
= ThisApplication.Workbooks.Open("z:\\Book1.xls", Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);





ThisApplication.DisplayAlerts
= false;

xlSheet
= (Excel.Worksheet)ThisWorkbook.Worksheets.get_Item(1);

Excel.Range range
= xlSheet.get_Range("G4","H5");

range.Value
= "123";



Excel.Style st
= ThisWorkbook.Styles.Add("PropertyBorder", Type.Missing);



range.Interior.Pattern
= Excel.XlPattern.xlPatternCrissCross;

range.Borders.Weight
= 2;

range.Borders.get_Item(XlBordersIndex.xlEdgeRight).LineStyle
= Excel.XlLineStyle.xlContinuous;

range.Borders.get_Item(XlBordersIndex.xlEdgeBottom).LineStyle
= Excel.XlLineStyle.xlContinuous;

range.Borders.get_Item(XlBordersIndex.xlEdgeTop).LineStyle
= Excel.XlLineStyle.xlContinuous;

range.Borders.get_Item(XlBordersIndex.xlDiagonalDown).LineStyle
= Excel.XlLineStyle.xlLineStyleNone;

range.Borders.get_Item(XlBordersIndex.xlDiagonalUp).LineStyle
= Excel.XlLineStyle.xlLineStyleNone;

range.Borders.get_Item(XlBordersIndex.xlInsideHorizontal).LineStyle
= Excel.XlLineStyle.xlLineStyleNone;

range.Borders.get_Item(XlBordersIndex.xlInsideVertical).LineStyle
= Excel.XlLineStyle.xlLineStyleNone;

range.Borders.get_Item(XlBordersIndex.xlEdgeLeft).LineStyle
= Excel.XlLineStyle.xlDot;

range.Borders.get_Item(XlBordersIndex.xlEdgeLeft).Color
= System.Drawing.ColorTranslator.ToOle(Color.Red);



ThisWorkbook.SaveAs(
"z:\\Book2.xls", Type.Missing, Type.Missing,

Type.Missing, Type.Missing, Type.Missing, Excel.XlSaveAsAccessMode.xlNoChange,

Type.Missing, Type.Missing, Type.Missing, Type.Missing);

}

catch (Exception ex)

{

MessageBox.Show(ex.Message);

}

finally

{

ThisWorkbook.Close(Type.Missing, Type.Missing, Type.Missing);

ThisApplication.Workbooks.Close();



ThisApplication.Quit();

System.Runtime.InteropServices.Marshal.ReleaseComObject(ThisWorkbook);

System.Runtime.InteropServices.Marshal.ReleaseComObject(ThisApplication);

ThisWorkbook
= null;

ThisApplication
= null;

GC.Collect();

this.Close();

}

 

 

使用C#和Excel进行报表开发(六)-操作行和列

在Excel中,行和列实际上仍然是Range,只不过取得行和列的方法和前面几篇随笔出现的有点不同,要使用Worksheet的Rows和Columns属性的get_Item方法,下面是例子代码,演示了怎样选中行,并且在行之间复制数据,和插入行:

 

 

ThisApplication = new Excel.Application();



ThisWorkbook
= ThisApplication.Workbooks.Open("z:\\Book1.xls", Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing, Type.Missing);





ThisApplication.DisplayAlerts
= false;

xlSheet
= (Excel.Worksheet)ThisWorkbook.Worksheets.get_Item(1);

//Excel.Range range = xlSheet.get_Range("G4",Type.Missing);

Excel.Range range
= (Excel.Range)xlSheet.Rows.get_Item(18, Type.Missing);

Excel.Range range1
= (Excel.Range)xlSheet.Rows.get_Item(19, Type.Missing);

range.Value
= "123";

range.Copy(range1);

range1.Rows.Insert(XlInsertShiftDirection.xlShiftDown);



ThisWorkbook.SaveAs(
"z:\\Book2.xls", Type.Missing, Type.Missing,

Type.Missing, Type.Missing, Type.Missing, Excel.XlSaveAsAccessMode.xlNoChange,

Type.Missing, Type.Missing, Type.Missing, Type.Missing);


 

关于Excel进程的释放,前面几篇随笔已经有了,这里就不再重复了。

 

使用C#和Excel进行报表开发(七)-设置单元格的显示格式

在Excel中,如果某个单元格的内容是数字,且比较长,默认情况下,会变为科学计数发表示,例如:123456789123456000会被表示为1.2345E+17,为了能够将数字按照普通的格式完全表示,就需要设置单元格的属性 ,下面是例子代码:

 

Excel.Application m_objExcel = null;

Excel._Workbook m_objBook
= null;

Excel.Sheets m_objSheets
= null;

Excel._Worksheet m_objSheet
= null;

Excel.Range m_objRange
= null;


object m_objOpt = System.Reflection.Missing.Value;

try
{
m_objExcel
= new Excel.Application();

m_objBook
= m_objExcel.Workbooks.Open("e:\\1.xls", m_objOpt, m_objOpt, m_objOpt,
m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt,
m_objOpt, m_objOpt, m_objOpt, m_objOpt);



m_objSheets
= (Excel.Sheets)m_objBook.Worksheets;

m_objSheet
= (Excel._Worksheet)(m_objSheets.get_Item(1));

m_objRange
= m_objSheet.get_Range("A1", m_objOpt);

m_objRange.NumberFormatLocal
= "#";



m_objBook.SaveAs(
"e:\\22.xls", m_objOpt, m_objOpt,

m_objOpt, m_objOpt, m_objOpt, Excel.XlSaveAsAccessMode.xlNoChange,

m_objOpt, m_objOpt, m_objOpt, m_objOpt, m_objOpt);
}

catch (Exception ex)
{

MessageBox.Show(ex.Message);

}

finally
{

m_objBook.Close(m_objOpt, m_objOpt, m_objOpt);

m_objExcel.Workbooks.Close();

m_objExcel.Quit();

System.Runtime.InteropServices.Marshal.ReleaseComObject(m_objBook);

System.Runtime.InteropServices.Marshal.ReleaseComObject(m_objExcel);

m_objBook
= null;

m_objExcel
= null;

GC.Collect();

}

 

posted @ 2010-01-13 15:01  PROS  阅读(483)  评论(0)    收藏  举报