操作Excel(C#)

操作Excel(C#)

编译：http://www.aspcn.com 飞刀
原著：ArunGG
来源：http://www.csharphelp.com/archives/archive241.html

　　前面的我就不翻译了。老外操作的是Excel 2000。所有Excel的程序操作都来源于Excel的对象库Excel9.olb.本例也只是对这个东东做一个简单的操作了解。有告诫待于朋友们的具体了解：）也算是为我们站点上天天为Excel烦的兄弟们，指一条“明路”吧：）
首先的一步就是使用Tlbimp这个工具将Excel9.0的对象库文件Excel8.olb转换成为dll，这样才能做为.Net平台Assembly来使用：）操作如下：

TlbImp Excel9.olb Excel.dll

只要有了这个Excel.dll，现在我们就能使用Excel的各种操作函数了。
下面就让我们具体看看C#是如何使用这些东东吧。

1. 创建一个新Excel的Application:

Application exc = new Application();
if (exc == null) {
Console.WriteLine("ERROR: EXCEL couldn't be started");
return 0;
}

2. 让这个工程可见:

exc.set_Visible(0, true);

3. 获取WorkBooks集合:

Workbooks workbooks = exc.Workbooks;

4. 加入新的WorkBook:

_Workbook workbook = workbooks.Add(XlWBATemplate.xlWBATWorksheet, 0);

5. 获取WorkSheets集合:

_Worksheet worksheet = (_Worksheet) sheets.get_Item(1);
if (worksheet == null) {
Console.WriteLine ("ERROR in worksheet == null");
}
6. 给单元格设置变量：

Range range1 = worksheet.get_Range("C1", Missing.Value);
if (range1 == null) {
Console.WriteLine ("ERROR: range == null");
}
const int nCells = 1;
Object[] args1 = new Object[1];
args1[0] = nCells;
range1.GetType().InvokeMember("Value", BindingFlags.SetProperty, null, range1, args1);

例程:

using System;
using System.Reflection;
using System.Runtime.InteropServices;
using Excel;

class Excel {
public static int Main() {
Application exc = new Application();
if (exc == null) {
Console.WriteLine("ERROR: EXCEL couldn't be started!");
return 0;
}

exc.set_Visible(0, true);
Workbooks workbooks = exc.Workbooks;
_Workbook workbook = workbooks.Add(XlWBATemplate.xlWBATWorksheet, 0);
Sheets sheets = workbook.Worksheets;

_Worksheet worksheet = (_Worksheet) sheets.get_Item(1);
if (worksheet == null) {
Console.WriteLine ("ERROR: worksheet == null");
}

Range range1 = worksheet.get_Range("C1", Missing.Value);
if (range1 == null) {
Console.WriteLine ("ERROR: range == null");
}
const int nCells = 1;
Object[] args1 = new Object[1];
args1[0] = nCells;
range1.GetType().InvokeMember("Value", BindingFlags.SetProperty, null,range1, args1);
return 100;
}
}

现在我们来看看如何使用数组，他有些类似于设置单元格。仅仅需要的改变只是args2[0] = array2;
const int nCell = 5;
Range range2 = worksheet.get_Range("A1", "E1");
int[] array2 = new int [nCell];
for (int i=0; i < array2.GetLength(0); i++) {
array2[i] = i+1;
}
Object[] args2 = new Object[1];
args2[0] = array2;
range2.GetType().InvokeMember("Value", BindingFlags.SetProperty, null, range2, args2);