C # basic Excel operations

The main content of this article: C # implements the open, save, merge cell, and cell assignment operations on Excel.

Excelhelper code:

1 class excelhelper
2 {
3 publicstaticvoid savedata ()
4 {
5 string filepath = environment. currentdirectory + "\ data ";
6 if (! Directory. exists (filepath ))
7 {
8 directory. createdirectory (filepath );
9}
10 string filename = string. Format ("{0 }\{ 12.16.xls", filepath, datetime. Now. tow.datestring ());
11
12 excel. Application excelapp = new excel. applicationclass ();
13 // create a workbook
14 if (! File. exists (filename ))
15 {
16 excel. Workbook workbooknew = excelapp. workbooks. Add (true );
17 // create a worksheet
18 excel. worksheet worksheetnew = workbooknew. activesheet as Excel. worksheet;
19 workbooknew. saveas (filename, missing. value, missing. value, missing. value, missing. value, missing. value, Excel. xlsaveasaccessmode. xlnochange, missing. value, missing. value, true, false, missing. value );
20}
21. Excel. workbook workbook = excelapp. workbooks. open (filename, missing. value, missing. value, missing. value, missing. value, missing. value, false, missing. value, missing. value, true, false, missing. value, false );
22
23 // create a worksheet
24 excel. worksheet = Workbook. activesheet as Excel. worksheet;
25
26 excel. Range r = worksheet. get_range (
27 worksheet. cells [1, 1], Worksheet. cells [3, 3]); // select a cell
28 R. mergecells = true;
29
30 R. value2 = "I love China"; // set the text in the cell
31 R. Font. Name = ""; // set the font
32 R. Font. size = 20; // font size
33 r. Font. Bold = true; // bold display
34 R. horizontalalignment = excel. xlhalign. xlhaligncenter; // horizontally centered
35 R. verticalalignment = excel. xlvalign. xlvaligncenter; // center vertically
36
37 worksheet. cells [4, 1] = "singing to the motherland";
38 worksheet. cells [5, 2] = "reading for the rise of China";
39 excelapp. displayalerts = false;
40 excelapp. alertbeforeoverwriting = false;
41 Workbook. Save ();
42 excelapp. Quit ();
43 system. runtime. interopservices. Marshal. releasecomobject (excelapp );
44 excelapp = NULL;
45 system. gc. Collect ();
46}
47}
48

Program code:

1 class Program
2     {
3 staticvoid Main(string[] args)
4         {
5             Console.Title ="Excel Operation Example";
6             ExcelHelper.SaveData();
7             Environment.Exit(0);
8         }
9     }

Result:

I love China
Singing to the motherland
	Reading for the rise of China