c# - How to change values of column of DataTable and show only in DataGrid not updating actual table of database -

-

i have column encrypted name(all other columns not encrypted) in sql database table. , have decrypt column encrypted name show in datagrid users of application actual table of sql database should not changed.(has remain encrypted name).

i think updatecommand works update actual table , have find alternative below updatecommand.

or there alternative way decrypt 1 column on datatable not influencing actual table of database?

my simple code is,

sqlcommand gridcomm = new sqlcommand(); gridcomm.connection = conn;  gridcomm.commandtext = "select id, customername, phonenumber customers";  sqldataadapter gridda = new sqldataadapter(gridcomm);  sqldatareader gridreader = gridcomm.executereader(); while (gridreader.read()) { } gridreader.close();  datatable griddt = new datatable("customers"); gridda.fill(griddt);  foreach (datarow row in griddt.rows) {     string strcustomername = (string) row["customername"].tostring();     bytecustomername = convert.frombase64string(strcustomername);     string decryptedcustomername = decryptstringfrombytes_aes(bytecustomername, byteaeskey, byteaesiv);      row["customername"] = decryptedcustomername; }  gridda.updatecommand = new sqlcommandbuilder(gridda).getupdatecommand();  datagrid_totalcustomerlist.itemssource = griddt.defaultview; gridda.update(griddt);

hello kay lee: think if @ implementing coverter in view looking for. in ivalueconverter implementation can implement decrypt routine. converter extended syntax in wpf binding statement. if not clear flesh out more. here great reference converters: http://www.wpf-tutorial.com/data-binding/value-conversion-with-ivalueconverter/

kind regards, mark wardell


Comments

Post a Comment

Popular posts from this blog

java - Run spring boot application error: Cannot instantiate interface org.springframework.context.ApplicationListener -

-
i have spring project , try make use spring boot , run @ embadded tomcat following : https://spring.io/guides/gs/rest-service/ this application //@configuration //@enableaspectjautoproxy @springbootapplication @componentscan(basepackages = "gux.prome") public class application { public static void main(string[] args) { springapplication.run(application.class, args); } } if use maven command: mvn spring-boot:run , project starts fine, need debug , run main method @ intelij, exception occurs: exception in thread "main" java.lang.illegalargumentexception: cannot instantiate interface org.springframework.context.applicationlistener : org.springframework.boot.logging.classpathloggingapplicationlistener @ org.springframework.boot.springapplication.createspringfactoriesinstances(springapplication.java:414) @ org.springframework.boot.springapplication.getspringfactoriesinstances(springapplication.java:394) @ org.springframework.bo...
Read more

python - pip wont install .WHL files -

-
when try install .whl gohike typing cmd c:\users\owner\downloads>pip install ta_lib-0.4.9-cp27-none-win_amd64.whl i print out: `processing c:\users\owner\downloads\ta_lib-0.4.9-cp27-none-win_amd64.whl complete output command python setup.py egg_info: traceback <most recent call last>: file "<string>", line 1, in <module> ioerror: [errno 2] no such file or directory:'c:\\users\\owner\\appdata\\lo cal\\temp\\pip-9gwk2c-build\\setup.py' ----------------------------------------- command "python setup.py egg_info" failed error code 1 in c:\users\owner\ap pdata\local\temp\pip-9gwk2c-build\` the part between pip- , -build in pip-9gwk2c-build different on same file. i asked python 2.7.11 pip 8.0.3 can't install gohike whl of ta-lib 0.4.9 few days ago , decided ask differently. can me! you have outdated pip not understand wheels. wheels not supposed have setup.py inside. try upgrading pip pip in...
Read more

Excel VBA "Microsoft Windows Common Controls 6.0 (SP6)" Location Changes -

-
i have excel workbook used generate quotations customers. there main page user inputs data, , there buttons generate various pdfs , send them customer. however, 1 user consistently getting error preventing generating , sending pdfs. i beleive "microsoft windows common controls 6.0 (sp6)". it's installed on users' computers. on mine, location "c:\windows\syswow64\mscomctl.ocx" on others "c:\windows\system32\mscomctl.ocx" the user experiencing issues on 32-bit machine, "mscomctl.ocx" file should in system32. have manually put in there, , pointed common controls reference in vba it. issue seems keep reverting looking in syswow64. since folder doesn't exist, can't find it, , can't produce pdfs. i thought perhaps issue user running older version of office (2007) there users on 2013 , 2016. thought perhaps mixture of 64-bit , 32-bit users. user gets sent workbook other users (as quotation process goes further, gets passed ...
Read more