i have a situation in which i have to check if the string starts with something and then perform something....First i used "If" as below
If utn.text.startswith("Fuel") then
messagebox.show("Fuel Purchase is selected")
End If
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Now i have to use Select and Case statements along with startswith...?
Dim subtotal As Decimal = CDec(txtSubtotal.Text)
Dim discountPercent As Decimal
Select Case txtCustomerType.Text.ToUpper() = "R"
Case CBool(250) To CBool(500)
discountPercent = 0.25D
[code]....
I am working on a calculator and I'm trying to use select case statements for the symbols selected (radio buttons) as opposed to If then Else statements. I am running into trouble because I'm only used to using them with list boxes.[code]...
View 4 RepliesIm trying to figure how to use the IF, ELSE statements OR the Select Case statement to write this program.I'm using Visual Studio 2010. The program is suppose to allow the user to input their weight in a text box and from group box 1 the select whether theyre male or female using the radios and they select inactive or active from group box two and the calculate but will determine how many calories they should intake based on the criteria below.
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I am trying to write a code that converts characters in string using a case select statements. For instance if I type the word "aeiou" the the word "<>[]/", also if I type "AEIOU" then <>[]/" should print but its not working here is a sample of my code so far.
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how to associate a select case statement with, which point to four Function procedures, to four radio buttons that are used to +, -, *, and / two simple fractions in a fractions calculator. This is a class assignment for which I have already been graded. I used an If...ElseIf statment and it worked perfectly. Now I am trying to utilize the Case Statments with Function Procedures to do the same thing. I do not get graded for this, but I was told to research it an find an answer. My current code is listed below.
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can anyone give a sample code for select case statements under a button click event?
View 2 Repliesi have a program, three radios, and 2 check boxes. the Radios use a constant value and do a multiplication. check one applies a discount. no problem.
the last takes the values of all three radios does a comaparison and displays a label if false, performs a subtraction if true and shows savings.problem>
very convoluted using if statements. and the output is often wrong(i know this is a logic error) i can not find the fault.
would it be easier to use case statments. can and will post code if requested. as it is in if then format currently it is rather long.
Sometimes the answer is so blindingly obvious i fail to see it.
When my form loads it adds some handles (using AddHandler) to a sub (showStatus). What this sub does is checks which control activated the sub (using sender.Equals) and displays text in the status label (status) accordingly.For this I use an If...Then statement for each possibility. There are many possibilities and my code get cluttered. Is there a way to do the same thing with a Select...Case statement. I tried: Select Case sender Case tbOne : status.Text = "blahblahblahblahblahblah" End Selectwhere: tbOne is a textbox, status is a StatusLabelIt gives me an error though, saying "Operator '=' is not defined for types 'Object' and 'System.Windows.Forms.TextBox'."Any ideas on how I can get this to work with a select case statement?
View 13 Replieshere is my code..
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If the result is 86 and it's mod by 43 the answer is 2 Case 2 is not firing. it just goes to the end of the procedure.
My page contains: GridView1, GridView2, Button1, Button2, DropDownList1 I bind Gridviews to the table selected in dropdown like this:
Dim results as DataTable
Select Case ddl1.SelectedValue
Case 0
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For me it looks like a lot of overhead. How can I improve then design and only specify that I'm working on the following record in dropdown list without specifying the Case condition every time? Should I change my design or leave it like it is?
Update:
RunZero, RunOne, RunTwo, RemoveZero, RemoveOne, RemoveTwo, RemoveThree - Execute six different stored procedures.
I am working on Datagridview. My task is adding buttons in the Datagridview table based on the case statements. Like In the Present table i have one column called "CategoryDescription". In this column, values are like 3101,3102, 3103........Here 31 is the common. and like 3201,3202,3203......Here 32 is the common. Like there are so many common values are there. So where ever the common values will come there i have to add one button in the Same column.
So Finally my conclsion is at Satrting 3101 and starting 3201,3301,3401.. i have to add one button control 3101 and add button control on 3201 and add button control on 3301.
i have a program using a select case to convert letters to special charaters. My question is how can I get the code to read upper and lower case letters without having to put the upper case letters in my select case statement. Example: Part of my code is
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ive got a form containing treeview on the left docked, and two panels one over the other (just as for practice), so i am using treeview to select one from the other the code contains the Case select,
If
Not e.Node
Is
Nothing
[code]....
The problem is , both panels are not visible, when i select the first node the firstpanel is visible then i select the second node both panels are not visible, i return to the first node the first panel is visible.
Not sure if this is possible but can you use the select statements in VB to pull in from not just one but multiple tables and put the data in a gridview? [URL]
Code:
Imports System.Data
Imports System.Data.SqlClient
Public Class Form1
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I've recently ported my website from 2005 to 2008, and I'm using LINQ Queries to implement a search. The issue is that none of the fields are mandatory, so I've had to implement a dynamic LINQ Query (sic?). Here's the relevant code -
Public Function searchQuery(ByVal titleType As String, ByVal titleName As String, _
ByVal configMgr As String, ByVal lifecycle As String, _
ByVal CIType As String, ByVal recordsPerPage As String) As IEnumerable(Of
[code].....
I am trying to do simple insert, update, delete, select statements within VB .NET to access a MS Access database. I have tried all kinds of solutions offered on the web and while the code seems to work, no rows are inserted. Also, I have tried, unsuccessfully, to use the Try/Catch to see if there's an error with no success. I have attached the versions of VB .Net and MS Access I am using: Here's the code:
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[code]I don't get any error messages, but the DoSomething() line is never executed. I guess this isn't possible.
View 7 RepliesI'm working on a routine that requires a significant amount of nested and daisy-chained logic. Using If-Then-Else, each logic construct would run 8-15 lines of code (quite readable) while using Select Case each construct doubles that (even with significant commentation, it gets less and less readable with each new Case).
I've read many times in this forum how Select Case is leaps and bounds ahead of If-Then-Else in runtime performance, although I can't recall any discussion of the underlying process(es) that make it so. I've also not had any luck finding good, detailed documentation on the nuts and bolts under each logic construct. What I'm working on, if the performance leap is legit, needs the performance more than the readability but if the performance is marginal then the readability is going to get the priority. how and why Select Case is supposed to process so much faster than If-Then-Else. Links to good white paper would be really nice too.
I have a macro that uses "If Then" to choose what macro to run based on the ActiveCell. I would like to use the Select Case method instead. How would I change this code?
Private Sub Workbook_SheetChange(ByVal Sh As Object, ByVal Target As Range)
Application.DisplayAlerts = False
Application.ScreenUpdating = False
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Question is, I basically wrote a Rock Paper Scissors game in VB.NET using If statements and wondered how exactly I would try and work this into a Select Case instead.Professor was pretty awful at teaching things and didn't let us know until today that it had to be Select Case(its due tomorrow
View 2 RepliesConverting an IF THAN ELSE into a select case
View 4 RepliesI am convertng vb.net to c# 2010 as my job, and none of the automatic tools I have can succeed completely. In special example, this case:
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I am mostly java developer before this, so not great with c# and none with vb.net. I do not understand the "oaaaa to" part and this part is not converting. Can you please point me to right place to find the c# version of this?
I have an if-elseif-then setup as below:
Private Sub CommandButton1_Click()
If OptionButton1.Value = True Then
getdate
Unload glpmenu
[Code] .....
I would like to change to Select Case.
i think this is the right place to post this.so i am doing my First Vb project and have run into some problems
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I am using visual basic in VS 2008 and trying to learn how to assign a value to a word in a combo box using case select, this is my first attempt at programing and i just can't work out what to do next. So far i have two combo boxes a label and a button, i want the word, first to = 11, second = 9, third =7, fourth = 5. All it is doing at the moment is adding the list index value and displaying that total in the label. I want it to display for eg: if (first=11) and (second=9) are selected a total of 20 in the label,and so on for what ever combination is selected.
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I have assigned nodes in my treeview keys depending on what they are to do with and now i would like to use a select case to choose the right calculation depending on which node is selected.i have tried selecting the key like this:
Select Case tvwFCOM.Nodes.IndexOfKey(tvwFCOM.SelectedNode.Text)
Case Is = "assi06"
Call MinimumSpeeds()
but option strict on dissalows conversion from string to integer. there are more cases, but i have only shown one here. How can i code so that the key is selected from the selected node?
I had to change the given code from If Then to Select Case, and this is what I came up with. But when I run the program, it does not work and gives me zeroes instead of the correct information.
Public Class MovieInfo
Private wkndBox, screens As Integer
Private title As String
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I just replaced a different segment of code with the select case statement and it works fine. However I don't understand what the dim is for after you do "Select case [variable name here]"
I currently just dimmed a value as nothing. I didn't specify any data type for my variable I'm using for this case statement. But it works.[code]...
Enum age
Over18
Under18
End enum
[code]....
'age' is a type and cannot be used as an expression.Is there any way of using enums in "select case"?