C # WebForm uses NPOI 2 to generate a simple wordfile (.docx ),

C # WebForm uses NPOI 2 to generate a simple wordfile (.docx ),

With NPOI, you can easily read and write Word and Excel files on the server. To perform read/write operations on Word, you must reference NPOI. OOXML. dll and apply the namespace XWPF.

This article uses NPOI 2.0 to generate and download the Word. NOPI 2.0: http://npoi.codeplex.com/downloads/get/764162

Although the latest version is NPOI 2.1.1, when I use NPOI. OOXML. dll of 2.1.1, I find that paragraph formatting cannot be implemented. Therefore, we recommend that you use this version.

Namespace to be added:

1 using System.IO;2 using NPOI.XWPF.UserModel;

Code:

1 XWPFDocument doc = new XWPFDocument (); // create a new word document 2 3 XWPFParagraph p1 = doc. createParagraph (); // Add section 4 p1.SetAlignment (ParagraphAlignment. CENTER); // The section is centered in 5 6 XWPFRun r1 = p1.CreateRun (); // Add text 7 r1.SetText to the Section ("Test Section 1 "); 8 9 XWPFParagraph p2 = doc. createParagraph (); 10 p2.SetAlignment (ParagraphAlignment. LEFT); 11 12 XWPFRun r2 = p2.CreateRun (); 13 r2.SetText ("Test Section 2"); 14 15 16 FileStream sw = File. create ("cutput.docx ");//... 17 doc. write (sw );//... 18 sw. close (); // generate the file 19 20 FileInfo file = new FileInfo ("cutput.docx") on the server; // save the file path and name 21 // note: to save the file, add the Everyone user to the parent folder and grant it full control permissions 22 Response. clear (); 23 Response. clearHeaders (); 24 Response. buffer = false; 25 Response. contentType = "application/octet-stream"; 26 Response. appendHeader ("Content-Disposition", "attachment; filename =" 27 + HttpUtility. urlEncode ("output.docx", System. text. encoding. UTF8); 28 Response. appendHeader ("Content-Length", file. length. toString (); 29 Response. writeFile (file. fullName); 30 Response. flush (); // send the generated word File to the user's browser 31 32 File. delete ("cutput.docx"); // clear the word file generated by the server

Page effect:

 

 

 

 

 

 

 

 

 

 

 

Generated word:

 

In C language-> what?

-> Is a whole. It is used to point to a struct, class in C ++, and other pointers containing sub-data to obtain sub-data. In other words, if we define a struct in C and declare a pointer pointing to this struct, we need to use "->" to retrieve the data in the struct using the pointer ".
For example:
Struct Data
{
Int a, B, c;
};/* Define struct */
Struct Data * p;/* define struct pointer */
Struct Data A = {1, 2, 3};/* declare variable */
Int x;/* declare a variable x */
P = & A;/* point p to */
X = p-> a;/* indicates that the data item a in the struct pointed to by p is assigned to x */
/* Because p points to A, p-> a = A. a, that is, 1 */

For the first problem, p = p-> next; this should appear in the linked list of C language. next here should be a struct pointer of the same type as p, and its definition format should be:
Struct Data
{
Int;
Struct Data * next;
};/* Define struct */
............
Main ()
{
Struct Data * p;/* declare the pointer Variable p */
......
P = p-> next;/* assign the value in next to p */
}
The linked list pointer is a difficulty in C language, but it is also the key. It is very useful to learn it. To be careful, you must first talk about variables and pointers.
What is a variable? The so-called variables should not be simply thought that the amount will become a variable. Let's use the question of our Dean: "Is the classroom changing ?" Change, because there are different people in the classroom every day, but they do not change, because the classroom is always there, and it does not become larger or smaller. This is the variable: There is a constant address and a variable storage space. Under normal circumstances, we only see the variable in the room, that is, its content, but do not pay attention to the variable address, but the C language pointer is the address of the room. We declare that variables are equivalent to building a house to store things. We can directly watch things in the house, while declaring pointers is equivalent to getting a positioner. When a pointer points to a variable, it is to use the pointer to locate the variable. Then we can use the pointer to find the variable "tracked" and get the content in it.
What about struct? The structure is equivalent to a villa composed of several houses, and several houses are bound for use together. Suppose there are many such villas distributed in a big maze, and each villa has a house. The location information of another villa is put in it. Now you have found the first villa with the positioner and obtained what you want from it (the data part of the linked list ), then, calculate the location of the next villa into your positioner (p = p-> next), and go down to the next villa ...... If you go on like this, you will know that the information of a villa on the ground is gone (p-> next = NULL), and your trip is over. This is the process of traversing a linked list. Now you can understand the meaning of p = p-> next!
Write so much. I hope you can understand.
If you want to learn c and C ++ well, you must be familiar with linked lists and pointers!

In C language-> what?

-> Is a whole. It is used to point to a struct, class in C ++, and other pointers containing sub-data to obtain sub-data. In other words, if we define a struct in C and declare a pointer pointing to this struct, we need to use "->" to retrieve the data in the struct using the pointer ".
For example:
Struct Data
{
Int a, B, c;
};/* Define struct */
Struct Data * p;/* define struct pointer */
Struct Data A = {1, 2, 3};/* declare variable */
Int x;/* declare a variable x */
P = & A;/* point p to */
X = p-> a;/* indicates that the data item a in the struct pointed to by p is assigned to x */
/* Because p points to A, p-> a = A. a, that is, 1 */

For the first problem, p = p-> next; this should appear in the linked list of C language. next here should be a struct pointer of the same type as p, and its definition format should be:
Struct Data
{
Int;
Struct Data * next;
};/* Define struct */
............
Main ()
{
Struct Data * p;/* declare the pointer Variable p */
......
P = p-> next;/* assign the value in next to p */
}
The linked list pointer is a difficulty in C language, but it is also the key. It is very useful to learn it. To be careful, you must first talk about variables and pointers.
What is a variable? The so-called variables should not be simply thought that the amount will become a variable. Let's use the question of our Dean: "Is the classroom changing ?" Change, because there are different people in the classroom every day, but they do not change, because the classroom is always there, and it does not become larger or smaller. This is the variable: There is a constant address and a variable storage space. Under normal circumstances, we only see the variable in the room, that is, its content, but do not pay attention to the variable address, but the C language pointer is the address of the room. We declare that variables are equivalent to building a house to store things. We can directly watch things in the house, while declaring pointers is equivalent to getting a positioner. When a pointer points to a variable, it is to use the pointer to locate the variable. Then we can use the pointer to find the variable "tracked" and get the content in it.
What about struct? The structure is equivalent to a villa composed of several houses, and several houses are bound for use together. Suppose there are many such villas distributed in a big maze, and each villa has a house. The location information of another villa is put in it. Now you have found the first villa with the positioner and obtained what you want from it (the data part of the linked list ), then, calculate the location of the next villa into your positioner (p = p-> next), and go down to the next villa ...... If you go on like this, you will know that the information of a villa on the ground is gone (p-> next = NULL), and your trip is over. This is the process of traversing a linked list. Now you can understand the meaning of p = p-> next!
Write so much. I hope you can understand.
If you want to learn c and C ++ well, you must be familiar with linked lists and pointers!