vb.net - calculating the values from the formula -

-

using vb.net (windows application)

table1

id formula  001 a+b+c 002 a-b*c 003 a*b 004 a/b ... ...

user input's

textbox1.text = id of formula (users input)  textbox2.text = value1 textbox3.text = value2 textbox4.text = value3

conditons

if user enter value in textbox1.text = 001  add 3 value (textbox2.text + textbox3.text, + textbox3.text), because user selected formula1  if user enter value in textbox1.text = 003  should multiply (textbox2.text * textbox3.text), because user selected formula2  ....

i want take formula according id, want pass value = textbox2.text, b = textbox3.text, c= textbox4.text

code

cmd = "select formula table1 id = '" & textbox1.text & "'" dim f1 string f1 = cmd.executescalar

so formula stored in f1, want pass user entered value

for example

f1 = + b * c means have pass value = textbox1.text, b= textbox2.text, c = textbox3.text

how this.

need vb.net code help

here's site has source code doing this, though in c#: eval class


Comments

Post a Comment

Popular posts from this blog

objective c - Change font of selected text in UITextView -

-
can suggest me how change font of selected text in uitextview.i cannot use uiwebview since have edit text. have seen pages app.how possible in app. see formatting text within uilabel differently . since need editing, should @ javascript-based editors such ckeditor or tinymce . highly recommend wwdc 2011 video session 511: "rich text editing in safari on ios."
Read more

php - Accessing POST data in Facebook cavas app -

-
so i've got simple form in canvas / iframe facebook app, , i'm trying pass along values post. reading on s.o. , fb's latest docs, understand it, data send via post form can accessed on receiving end $_request object. i read on thread on s.o. in order post forms work need pass along input named "signed_request" value current signed_request (i have signed request working ok otherwise...all login , authentication stuff working fine). isnt mentioned anywhere in official fb docs. so problem comes in $_request object signed request, , bunch of other session stuff. form inputs found. the way can read them set method of form "request" isn't real form method. takes of inputs , sends them args in url. horrible. here's sample page canvas app form i'm using try debug (leaving out authentication stuff): <form enctype="application/x-www-form-urlencoded" method="post" target="_top" id="my_form" action=...
Read more

c# - Getting control value when switching a view as part of a multiview -

-
i have following code in aspx page: <asp:button id="display_button" runat="server" text="display" onclick="button1_click" /> &nbsp; <asp:button id="edit_button" runat="server" text="edit" onclick="button2_click" /> &nbsp; <asp:button id="save_button" runat="server" text="save" onclick="button3_click" visible="false" /> &nbsp; <asp:multiview id="multiview1" runat="server" activeviewindex="0"> <asp:view id="view1" runat="server"> <asp:formview id="view_program" runat="server"> <itemtemplate> <%# eval("status").tostring().trim() %> </itemtemplate> </asp:formview> </asp:view> <asp:view id="view2" runat="server"> ...
Read more