how to open encrypted excel file

component of EXCEL to the. NET component. Open the Add reference dialog box in the project, select the com column, and find "Microsoft Excel 9.0 Object Library" (Office 2000) in the com list ), add it to the project references. Visual C #. Net automatically generates the corresponding. NET component file. This conve

boxes to complex objects such as pivot tables, graphs, and so on. Here's a brief description of the most important and the four most used objects. (1) Application object. The Application object is at the top level of the Excel object hierarchy, representing the environment in which Excel itself runs. (2) Workbook object. The workbook object is directly below the Application object, representing an

PrefacePreviously also used in C # to Excel, with OLE DB or offic COM components, but always very troublesome, relying on more restrictions, so decisively looking for open source solutions, Java above already have very mature poi, so, found the move. NET--npoi, so that you can not rely on anything, just use this library.IntroductionOpen Source protocol: Apache 2.0With Npoi, you can read and write Word/

"Export the data in the gridview displayed on the page to an Excel table" encountered the following error: C # The format of the Excel file to be exported is different from the format specified by the extension. Details Solution: Here we use "modify registry method" to solve this problem, which does not solve the problem from the root: 1.

Using the Excel component of MS Office to generate Excel has many drawbacks.The first step is that the process is difficult to deploy. The second step is that all of excel.exe will be loaded into the memory every time it is generated, occupying at least 10 MB of memory. If a large file is generated, it will take at least 100-500 mb, not every server may suffer su

Documentation. It also supports the generation of PDF, HTML, and CSV documents. Phpexcel also supports filling data with existing Excel documents as templates to generate the above documents. In addition, its API documentation and demo are quite complete and very helpful for developers. The official phpexcel website is as follows: Http://phpexcel.codeplex.com/ The current version is 1.7.6. The downloaded and decompressed phpexcel directory

the password to protect the file. Writerespassword File write protection password. If a password is specified when the file is saved, but the password is not provided when the file is opened, the file is read-only. Readonlyrecommended IfTrue, A

If you need to specify how to open a folder, you can set up an Excel application in the Excel table. And often it needs to be done by modifying the registry or by using a macro command. Now we're going to use the Modify registry to Excezhong specify open folder. We can specify the folder in which to

1, the left mouse button Double click the computer Desktop Excel2013 The worksheet program icon, opens it to run. In the Open Excel2013 Sheet Program window, click the Open another workbook option in the left pane. As shown in the picture; 2, in the jump to the open page, click the "Computer"--> "browse" option command. As shown in the picture; 3. T

Because of the advantages of different versions of Excel, many users will install multiple versions of the Excel program on the computer, so that when there is an unexpected situation, choose to use the most frequently used version of the set priority to open, the main methods are the following two kinds: Method One, on the desktop select the "Start → run" comma

. InterOP. Excel. applicationclass ();If (xlapp = NULL){_ Returnstatus =-1;_ Returnmessage = "an Excel object cannot be created. Excel may not be installed on your computer ";Return NULL;} // Determine whether the file is used by other processesMicrosoft. Office. InterOP. Excel