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。

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);