Getting Value Stored In A Variable

Aug 6, 2009

[code] i want to get the value of n from using x where variable name is stored in x,

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Execute Value Stored In A Variable?

Oct 17, 2011

I was wondering if there is anyway you could go about executing what's stored in a variable....kinda like in an #Eval statement....

E.g.

dim i as integer
dim PlaceHolder as String
for i = 1 to 10

[Code].....

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Calculation, Variable Is Stored As An Integer?

Oct 21, 2011

Doing a calculation, variable is stored as an integer.It got too 2,147,483,647 before giving me an arithmetic overflow. Anyway i can increase the number it can hold?

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Call Or Set Variable Value When Its Name Is Stored As String

Jun 6, 2011

My application has a variable VAR_1 that is boolean, this name is also stored in database.

Now I need to set VAR_1 value in my app by reading database and asign x value,

How do I call VAL_1 from a string?, this is:

Dim VAL_1 as boolean

Dim str as string = myTable.Rows(0).item("x") <--- Here's the name "VAL_1"

But I just can't find how to call VAL_1 by converting "VAL_1" to variable

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Focus To Control Where Name Is Stored In A Variable?

May 31, 2009

i have few cotrols on form (text box, combo box, checkbox etc). Thru some condition i stored the name of the control in a variable.

for example

dim cntrlname as string
if x=1 then
cntrlname = 'txtCode'

[code]....

at some other place on form i want to use above variable to give the focus to control.

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Display A String (stored In A Variable) In Notepad?

Jul 12, 2009

I want to display a string (stored in a variable) in notepad(or any other default text editor depending upon the system). Saving to a text file is not necessary. I just want to open Notepad with an unsaved file containing the text. Please help

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Manipulate A DataGridView Control When It's Name Is Stored As A Variable?

Oct 9, 2010

I have a number of tabpages that each contain a datagridview control only. Based on the results of a SQL statement I then loop through each tabpage and set its name. The reason for this is that at runtime (and depending on the results of the SQL statement), the contents of each tab page will change - henceI loop through the tabpages and set the name/ text (to reflect what will later be shown in the DataGridView)

The datagridview control on each tab has the default name e.g. DataGridView1, DataGridView2, DataGridView3 so it's easy for me to loop through them e.g.:
for i as integer = 1 to 3

[code].....

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Passing Variable Values To A Stored Procedure?

Jan 14, 2011

I am trying to pass some declared variables to a stored procedure. Here is my

Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles startpayrollButton.Click
Dim ssql As String = "select MAX(payrolldate) AS [payrolldate], " & _

[Code].....

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Pass And Access The Array Variable In Stored Procedures?

Jun 10, 2011

How can i pass and access the array variable in Stored Procedures

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VS 2008 Filling A Datagridview With A Stored Procedure Variable?

Nov 4, 2010

Using VB2008 How can we fill the datagrid with information from a stored procedure and a sp variable.We have a dataset named: DBnamesDataSet, a source: ShownameBindingSource and a adapter: Show_nameTableAdapter.

Stored procedure:
alter PROCEDURE [dbo].[show_name]
@name varchar(50)
AS

[code]....

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Date / Time Variable Stored In A Column In An SQLite Table

Jan 26, 2012

I have a date/time variable stored in a column in an SQLite table. I need to select the string with the last 3 digits trimmed off. [code]

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Efficient Code To Split String Variable And Stored It Into Array?

Jul 21, 2011

For example, I have string variable (MyString) as below.MyString = "First word || second order || third example || fourth item || fifth stuff"

There are separator "||" at MyString variable. I want MyString variable is spited based on separator "||"and stored it into new array variable.

Could you advise me the most efficient code to do this job in VB?

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String Variable For Use With LINQ To SQL Class Stored Procedure Call Has Weird Message?

Feb 4, 2010

In my project I am using a LINQ to SQL class that contains a stored procedure which includes a string value as an output parameter.So to capture that, I created a string variable as follows in the procedure:Dim spOutput As String? However, when I do this I get the following message "Type 'String' must be a value type or a type argument constrained to 'Structure' in order to be used with 'Nullable' or nullable modifier '?'"

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Design A Program That Can Encrypt And Decrypt Messages Stored In Simple Text Files Using A Private Key Stored In A Separate File?

Jun 13, 2011

Need to design a program that can encrypt and decrypt messages stored in simple text files using a private key stored in a separate file. Software should also be able to allow the users to enter simple messages that either displays the encrypted or decrypted message. The encryption method should use a simple substitution method. It should be set out in the following format:

Example (the "@" is the separator):

@
The character The Code End of line
A @ 4gh EOL
B @ 84!9 EOL

Has to use the 256 ASCII character codes. The separator will be used to separate the character and its corresponding code.Here are the pseudocodes I have come up with:

� Read any private key file
separator = readline(file);
while not EOF(file) do
tempStr = readline(file);

[code].....

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VS 2008 Error: Range Variable 'sender' Hides A Variable In An Enclosing Block Or A Range Variable Previously Defined In The Query Expression

Mar 25, 2010

I am getting the error:"Range variable 'sender' hides a variable in an enclosing block or a range variable previously defined in the query expression."for this

Imports System.Data.SqlClient
Imports System.Linq
Public Class Form1

[code]....

I can select any other item from the table without the error. "sender" has the same properties as "receiver" in the SQL table.

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Call A Stored Procedure From Sql Server Which Work With A Stored Procedure

Sep 11, 2009

The store procedure which give me the information I need is:

USE [UCSMIS]
GO
SET ANSI_NULLS ON

[Code].....

When I try to add it to my report it gives an error, is it because of the temp table and how should I go about it?

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Variable Error "Variable 'reader' Hides A Variable In An Enclosing Block"

Aug 23, 2011

I receive the error -

[Code]...

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Sql - Getting Parameter For A Stored Procedure Inside Another Stored Procedure

Aug 29, 2011

I have a stored procedure to update a table, but needs a couple of values from another table.

the first two selects get the value from the table and then are used in the update statement.

The select statments:

Select @iStatusDropDownValueID = iDropDownValueID
From DropDownValue
Inner Join DropDownValueType On DropDownValue.iDropDownValueTypeID =

[Code].....

First, the values that are retrieved by the first two select statements are always the same. So they could be passed in by the code itself. I don't know that this will speed things up at all, just make the entire stored procedure better and easier to read.

Second, if the "Value Name" should change this store procedure will break (which is possible, but not often).

I am looking for any insight into the Best Practices for this situation.

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Program Function - Says, "The Type For Variable [variable] Will Not Be Inferred Because It Is Bound To A Field

May 18, 2012

Public Class Form1
Dim x, c, number(0 To 19) As Integer
Dim s As Integer

[CODE]...

The variables in the brackets [example] do not actually have brackets in them in the original code. These are where the issues are. For both variables, it says, "The type for variable [variable] will not be inferred because it is bound to a field in an enclosing scope. Either change the name of [variable], or use the fully qualified name (for example, 'Me.[variable]' or 'MyBase.[variable]')." Now, I'm not entirely sure if this is a stupid question or not, as I'm used to VB '98 because that's what we use in my programming class at High School. let me know why this won't work.

-Note: The intention of this program is to continually loop the generation of numbers for this list until I tell it to stop. Button1 ends the program, Button2 generates the list one time only, Button3 is supposed to loop the generation of the list, and Button4 is supposed to end the loop, but not the program.

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VS 2010 Compiler Creates New Variable Automatically When Use If Statement Without Strictly Declared Variable?

Jan 10, 2011

Say that i have the following code that parse about 20k records from the DB.

Code #1

vb.net While reader.Read()
list.Add(If(Integer.TryParse(reader(0).ToString, 0), Integer.Parse(reader(0).ToString), 0))
End While

And then another code which does the very same thing but it seems to be a little cleaner.

Code #2

vb.net While reader.Read()
Dim storeowner As Integer = 0
Integer.TryParse(reader(0).ToString, storeowner)
list.Add(storeowner)
End While

This is what i am confused about; does the compiler creates a new variable automatically when i use the if statement without strictly declared variable? What approach is better in sense of performance?

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Variable Naming Conventions To Illustrate Variable Type And Where Variables Are Declared

Aug 24, 2009

I am looking for a good resource on variable naming conventions to illustrate variable type and where variables are declared. So I will have public variables, Private variables, private or local variables. I also may want to declare variables with the same name in different class code (i.e. in the code behind different forms). I am assuming good coding would dicatate a prefix for declaration location.

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Import Text File : Object Variable Or With Block Variable Not Set

Mar 28, 2011

i have this error in the line of with xl.active......Object variable or With block variable not set.

Dim xl As Object
xl = CreateObject("Excel.Application")
With xl.ActiveSheet.QueryTables.Add(Connection:= _
"TEXT;C:Documents and SettingsUserDesktop429MEDICA2.TXT", _ Destination:=xl.Range("$A$1"))

[code]....

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Object Variable Or With Block Variable Not Set - From Property Get With Bindingsource.current?

May 31, 2012

Now I have the need to get a current value from a bindingsource in a property of a user control.In a previous thread I had tracked down the "Object variable or With block variable not set" to the return in the Get block of a property. At the time I was only using the Set so I just commented out the offending code until I needed it.

[Code]...

The error does not occur during a system compile, only upon saving the container object of the user control. As I said the Set works correctly, only the Get causes the error.I would like to know what I am missing/misunderstanding and am open to other suggestions of handling retrieving the current value of a bindingsource in a user control.

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Pass A Variable To Another Form Or Else Make The Variable Visible To Both Forms?

Sep 5, 2010

Using Visual Basic 2008 Express. I need to pass a variable to another form. Or else make the variable visible to both forms.

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Serialport VB2008.net - Input Variable And Output Variable Of This Terminal?

May 14, 2010

I am using vb2008.net express,I test vs2005term it work, can any tell me what is the input variable and output variable of this terminal?how to catch the input and output variable to a textbox1 for sending and a textbox2 for receiving when I press send button? is that possible?

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Write A Variable To A File That Has A Different Type Than The Function Assigned To The Variable

Sep 17, 2011

I have the following code that I am using to parse out a test file. I am getting variable conversion error in Sub Main() when I assign file = Read(). The return value of Read() is a TextFieldParser type. How do I assign the proper variable type to "file" so I can write the output to a text file?

Function Read()
Using MyReader As New FileIO.TextFieldParser("C:UsersColinDesktopParse_Me.txt")
Dim currentRow As String

[Code].....

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"Variable 'cnn' Hides A Variable In An Enclosing Block?

Mar 19, 2009

I have the following code but I get blue squiggly line in cnn and when i point my mouse pointer on it i see this message "Variable 'cnn' hides a variable in an enclosing block"

Private Sub BtnLockUnlock_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BtnLockUnlock.Click
Dim IsLocked As Boolean = FpSpread1.ActiveSheet.DefaultStyle.Locked

[code].....

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.net - Variable 'cl' Is Passed By Reference Before It Has Been Assigned A Value For DataView Variable?

Feb 1, 2012

I have the following code passing a dataView variable to a function and I am getting the following warning:"Variable 'cl' is passed by reference before it has been assigned a value. A null reference exception could result at runtime."

Function Editclass()
Dim cl As DataView
Bindclass (SqlConnection2, cl)

[code].....

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Class Inheritance Object Variable Or With Block Variable Not Set?

Sep 26, 2011

i had a class called Tag with a structure like:

public class Tag
private _members
public properties
public shared database_methods
end class

this class was tailored for mysql database. i'm currently adding access 2007 support so i split tag into tag and tagdata with structures like:

[Code]...

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Code Generation ... Object Variable Or With Block Variable Not Set?

Apr 25, 2012

I'm having trouble tracking down what is wrong and causing the above error. This only occurs when saving the design view in VS 2012. The code builds and runs fine.Full error text:Code generation for property 'CompanyValue' failed. Error was: 'Property accessor 'CompanyValue' on object 'ContactViewUC1' threw the following exception: 'Object variable or With block variable not set."

CompanyValue definition in ContactViewUC:
Public Property CompanyValue
Get

[code].....

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