VS 2005 Applying Math Equation?
Jul 17, 2010i got the following equations and want to apply it in VB.net, how do I construct it in VB.net.
[code..]
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Math Equation For Temperature Converter Buttons?
May 4, 2010I've pretty much have this assignment done. My main problem is to get the math to pan out and it's making me crazy. It's gotten to the point of staring blankly at my screen for the last 4 hours.I'm hoping that someone would be willing to take a quick peak and give me a shove in the right direction. The purpose is to type in a number in a textbox then choose using a fahrenheit radio button and a celsius button to calculate the corresponding conversion in a label box.
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Develop A Simple Math Calculator That Will Allow The User To Input The Right-hand-side (RHS) Of An Equation Into A Textbox?
Dec 12, 2011I am trying to develop a simple math calculator that will allow the user to input the right-hand-side (RHS) of an equation into a textbox on the application and have the application evaluate the expression for a given value of x, which is also input
into the application by the user via another textbox.For example, if the user wants to evaluate the following expression,
y = 3 + 4*x + 5*x^2
then they would input into the textbox the RHS of the equation
3 + 4*x + 5*x^2
and then enter a value of x into the another textbox and click on the calculate button.I tried this:
answer = EquationTextBox.Text
but it doesn't work.
VS 2005 User To Input Equation Such As A+B Into The Box?
Dec 29, 2009I wanted to have a textbox that can be input in terms of numbers. Then I need to use the number user input into a certain equation. How I can do this??
Also if I want a user to input equation such as A+B into the box, but then I need to use the equation user input to find answer for certain A and B value. Can this be done?
VS 2005 Extract Input - Can't Use The Equation To Add Two Numbers
Jan 4, 2010I know how to read input numbers, but when I input equation like A+B, I can't use the equation to add two numbers. I tried many times but failed to use the equation.
Here my
Public Class Form1
Dim Number1 As Double
Dim Number2 As Double
[CODE]....
VS 2010 Hmwk - Display The Largest And Smallest Using Math.max - Math.min
Mar 5, 2012well i am having a couple of issues with this particular homework problem and this is my first programming class so there is probably quite a few mistakes well the homework problem is to take three double values entered by a user and display the largest and smallest using math.max and math.min and display the smallest and largest so i thought i could use a listbox and take the values that went to the listbox and assign variables to each so i can try to use each variable in the math.max and min but im not making it to far and i actually might be way off
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Add A Timer To A Console Math Quiz Application In VB 2005
May 15, 2009I'm a newbie and trying to develop my first program. The program is a console math quiz application. I want to add a timer to the code that tells the user the the amount of time it took for them to complete the quiz. I have no clue as to how I need to implement this.
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Applying Changes To A DataGridView
May 12, 2010I'm allowing users to change data in a DGV. Is there some kind of built in method for DGVs that updates the table with the new values in my Access database? I have a save button that performs the following:
[Code]....
Applying A File From Another Form
Jun 6, 2009I've got 1 form, with a TextBox1, where I want the news to pop-up.Now, I've made a kind of admin menu, where there's another TextBox in another form, and I want it in such a way, that when I press the "Accept" button, the text saves itself and shows up in TextBox1.[code]Can I control form 1, with form 2?
View 3 RepliesDatagridview Formatting Not Applying?
Feb 11, 2012In my form load event I am setting the defaultcellstyle formats. They are not taking hold anyone know why? None of the formatting that is expected in the code after I bind the datatable to the grid is getting done even though the code steps through it
Private Sub frmADRORD_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
'wire the delegate function for incoming updates
AddHandler m_helper.DataUpdate, AddressOf UpdateGridInvoker
'bind the visual grid with the binding source
[code]....
Formatted Row Not Applying To Other Worksheets?
Jun 18, 2012I'm trying to get the first row in each worksheet to be shaded and have the font bold. Right now, I am able to get the first worksheet changes made, but none of the other worksheets within the same workbook are being changed. Here is what I have written so far for creating the spreadsheet and applying a format.Public Function WRITE_TO_EXCEL(ByVal dt As System.Data.DataTable, ByVal includeheader As Boolean, ByVal worksheet_index As Integer) As Integer
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String Replacement Isn't Applying
Jun 6, 2009I have the following [cod]e...
But the label still shows the [b]! It doesn't want to delete itself..
VS 2008 Applying A Condition?
Oct 20, 2009I have add,update,delete buttons on my form.A message box should appear on the screen "should have values to Add/delete/update/" if user clicks on Add/delete/update buttons without having any values in the textfiled,i have around 20 text fields on my form.
View 7 RepliesApplying A Rule Set To Different Lines Of Text?
Apr 27, 2012The general purpose of my application simply reads a line of text for example:
1. I have a printer issue
2. I have a software issue
I have a rule set as follows:
'Define the class 'Printer' with 14 values as a string...
Dim Printer(13) As String
'The string 'Printer' gets assigned a value, this is repeated another 13 times...
Printer(0) = "Printing"
[code]....
The code simply uses a number of keywords to detect if the issue is a 'printer', 'software', 'telephone',. or 'password' problem.I want to apply this rule set to 10 issues within the same rich text box, with the results sent to a text file. The exporting to a text file I can do, however the main issue is, i cannot read the lines individually.
Applying Animation To Object In PowerPoint?
Apr 29, 2010I tried applying an animation to an object in powerpoint through VB.NET. I'm only a beginner and have tried my best to figure it out with something like the following code which is two objects using one as the trigger. I managed to get it working in pptVBA but just can't get it to work in .NET. I keep getting an error COMException was unhandled.
Imports PowerPoint = Microsoft.Office.Interop.PowerPoint
Dim intereffect as powerpoint.effect
Dim oShape/sPic as powerpoint.shape
With oApp.ActivePresentation.Slides(1).TimeLine.InteractiveSequences.Add(1)
[Code] .....
Applying Changes Before Setting Dialog Result Value?
Jan 19, 2011I have a dialog with an OK, Apply and Cancel button. I want the apply button to have the same effect as the OK button, but the dialog should not close. Can you stop the dialog from closing when you set a dialog result value (as I want to when clicking the Apply button)? Basically I have some settings that are passed into the constructor of the dialog. The dialog then updates its controls with these settings. At the moment any settings that are changed in the dialog are applied when the dialog closes via the OK dialog result (i.e. the code that calls the dialog also applies the changes). This is the way I would prefer it to happen, but the only way I can think of to get what I want to work is to apply the settings changes before I set the dialog result value (i.e. in the dialog code). This essentially makes dialogresult useless in my case as I cant use it to get the effect I am after.
View 6 RepliesApplying File Permissions From .NET Code
Mar 11, 2010I have an application that is writing a comma separated values file. How would I go about altering the permissions of that file from .NET - for example to give read-only permissions to a particular active directory group?
View 4 RepliesDataGridView And Applying Changes (Save Button)
Oct 14, 2009I have a DataGridView that loads info from an Access DB. The user can change the data accordingly, but how can I make it so the form will save the data that was changed? I know I'll have a SAVE button... but not sure what methods to be calling on the DataGrid
View 6 RepliesDirectory.SetAccessControl Not Applying Permissions?
May 7, 2010I'm trying to set ACL's on a folder using Directory.SetAccessControl. More specifically, I want to grant "Users" full control on a folder. AddFileSecurity works perfectly. AddFolderSecurity does not. It's result is that "Users" will get added to the folder's ACL but "Full Control" is not checked off (nor are any other permissions).
Imports
System.IO
Imports
System.Security.AccessControl
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Iterate Through An Equation?
Apr 26, 2012I want to iterate through an equation and modify a number e.g. Multiply it by 10, where there is one. How do I do this?
View 4 RepliesUser Equation N Value
Mar 11, 2010I wanted to read input equation by user A+B and assign input user value to A and B to ask them to add and give answer. But I just can't get the code to work. I using VS2005 and VB.Net.[code]
View 1 RepliesUsing Function For More Than One Equation?
Apr 26, 2011Can I use a function for more than one equation?
Program Description: Fortuitous Dice is a game that requires two dice be rolled, one at a time. If p and q are the numbers rolled on the first and second die, respectively the value of the roll in the game is determined as follows:
P Q Rule (value of the roll and condition)
Even Odd 2P + Q
Odd Even P + 2Q
Even Even P + Q When P not = Q
P When P = Q
odd Odd P + Q When P not = Q
3Q When P = Q
Applying Security On A Windows Form-Based?
Jul 8, 2010I'm creating a windows application form in vs 2005 for a client.. It's a data-tracking application. I have a few questions.The client wants a logon screen to be added into the application (at least any way or method that'll ensure that security was applied). My question in regards to this topic would be; Is it necessary to create a logon screen (or even a user authorization) for a windows form? I realize that in a webform project, security should always be considered and should be applied in all areas. Although with a windows form, I thought you can authorize who can gain access to the application by defining which workstations to install the final production release of the application (when its time to deploy the file). Is this correct?
My next question is, what is the best method to exporting data from EXCEL to SQL tables? I have many Excel files that I'd like to take portions of data from each file and insert them to there proper table.
The last question is about deploying a windows form application. As you can tell, I don't have much experience when it comes to developing Windows Form projects. Anyways back to the topic, When deploying a project, does it provide a .EXE file (installation package) to install the application on the workstation? Or is it a .EXE file of the application, where you can run it and no need to install anything?
C# - Applying Date Validation To Excel Cell?
Jan 27, 2012I am working on applying date validation to excel cell(range) from VB.NET.
Private Sub DateValidExcelRule(ByVal worksheet As SpreadsheetGear.IWorksheet, ByVal DateRange As String)
Dim dt As Date = CDate("1/1/1900")
[Code].....
When I enter 4 digits whole number 7777 it is validating correctly showing message Enter Valid Date, but when I enter 5 digits 77777 it is accepting the value and converting it to 12/10/2112 value and not showing any error message.
Here all I want to do is I want to validate the cell value to any date format mm/dd/yyyy.
Keep Getting A Conversion Error When Applying A Sql Query On Datagrid
Apr 9, 2009I created a form with a datagrid to show data stored in an Access database. It shows the data correctly, using the code:
[code]...
("compras" is the table name and "Comprasver" is the dataset name).The form also has 3 textboxes and 1 DateTimePicker.Then I created a sql query to allow the user to search within 4 fields of the table (field1, field2 and field4 get the data in the textboxes and field3 gets it in the DateTimePicker). The query looks like this: SELECT field1, field2, field3, field4, field5 FROM compras where field1 like "%"+?+"%" and field2 like "%"+?+"%" and field3 like "%"+?+"%" and field5 like "%"+?+"%" field4 is not an important search criteria, so I didn't include it in the query. Field1 and field2 are both string type. Field3 is a Date type and field4 is integer.Once I made the query, it automatically added a toolstrip with a code, which I cut and pasted in my "Search" button "click" event. The code looks like this:
[code]...
But every time I try to search, no matter which criterias I fill in (even if I fill in none of them), I get an error message saying something like the conversion of the "" string into Integer is not valid (my Visual Studio version is in Spanish, so I don't know how to exactly translate the error message).It's supposed to let the user fill in one, more or all search criterias (all 4 search fields).I found out that if I delete from the query the two fields that don't have String type data, it works correctly. What should I do in order to be able to use the Date and Integer type fields as search criterias too?
Reading Text From A File And Applying To (like Me.close())
Oct 12, 2009Okay in my program I have users select options and then it writes text to a file. When the user restarts the program, I want it to read from the file and search for specific text like "User is a senior,False." At this point if the file has this text, I would like the program to read from a line in the program.
View 3 RepliesRichTextBox Selection Font (Applying 2 Styles)
Jan 18, 2009How do I apply 2 font styles to the text selected in a richtextbox? Used this method to change fontstyle:
RichTextBox1.SelectionFont = New Font(RichTextBox1.SelectionFont, FontStyle.Bold)
But with this method I can only apply 1 font-style (for example bold OR italic OR underlined, etc.) right? But I want to apply for example 2 front-styles, or just add the font style ( so I can add several front-styles to the selected text, for example the text is bold, and then ALSO make it underlined (with this method I can only change the font-style, only one font-style)), how do I do this?
Just do so:
RichTextBox1.SelectionFont = New Font(RichTextBox1.SelectionFont, FontStyle.Bold + FontStyle.Italic)
VS 2010 - Applying Different Color On Default Cursor?
Jan 18, 2012In my program I have a picturebox. using the .onEnter and .onLeave events for the mouse I have the cursor change to a cross (one of the default cursors) and it does like a transparent grayscale thing and changes color a bit depending on what is behind it. The issue with that is that all the images I look at are grayscale images so it gets a bit lost. I am wondering if there is a way to use this default cursor and apply a different color to it?
View 1 RepliesVS 2010 Applying Actions To Multiple Controls
Oct 8, 2011I'm very new to VB and am struggling with a problem! I have a form with mutiple (100) textboxes and buttons. I have set the properties of some of the buttons so that the text is draggable, but I want to be able to drag it to every textbox. I have posted a snippet of code below that allows me to drag ot to box 1 and 2, but is there any way that I can set it to drag to all boxes without having to individually specifying them? The same goes for dragging text between boxes...i'm sure there must be some way of specifying multiple drag and drop locations without the laborious task of specifying each as an individual sub? Code below
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Equation With Multiple Possible Results
Jul 30, 2011I have a decent understanding of the logic, the content. I'm working on a puzzle and I'd like to write a short program. I'm looking to fill in the following variables: AB.CDE FG.HIJ (they're part of coordinates, and the puzzle is part of a geocache)
The puzzle asks you to determine which numbers correspond to certain colors, like this:
[code...]
I need to define A-J as >= 0 and <=9. I also need to say that each color is >= 0 and <=9, but that no color can be equal to another color (purple ≠yellow, orange, etc). some number combinations won't work. Purple and yellow can't be 2 and 5 respectively, because that'd produce a negative number. I'm guessing that there will be more than one possible result. So how do I create an equation that calculates this.