操作Excel(C#)
发布时间:2006-10-14 3:05:51   收集提供:gaoqian

  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);

  大家需要了解Tlbimp这个工具的使用啊:)这个东东很有用,可以将普通Win32程序移植到.Net下面来:)

 
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