.net - Unable To Convert Code From C# To .net Due To Incremental Operator Or Automatic String Conversion?
Apr 9, 2009
I am writing a library in VB.NET in which I have added, among others, a class originally written in C# but converted into VB.NET. I don't know much about C# so therefore I have used online C# to VB.NET-converters. Now I am stuck with some code which I believe the online-converter was not able to "translate" properly.
When running the code I get the following error:
System.IndexOutOfRangeException was unhandled
Message="IndexOutOfRangeException"
StackTrace:
at System.String.get_Chars()
[Code]...
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Sep 24, 2010
I have a class that overrides Ctype operator to have conversion from and to String :
Public Class TotoToString
Property value As String
Public Sub New(ByVal V As String)
Me.value = V
End Sub
[Code] .....
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Mar 18, 2009
I am building an equation parser, it takes the equation
"( 3456 + 321 * X ) / 45"
For example. As I couldn't find a direct solution to parse this equation, I split the equation and started implementing the operations 1 by 1 until I stuck with the execution order of the arithmetic operators (as the multiplication should be performed before the addition). So I am trying now to avoid this and try to parse the full equation. Is there a way to convert the string "+" to + for example?
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Mar 1, 2012
I want to convert this vb into c#, I cant correct it
Public Function encryptPassword(ByVal Password As String, ByVal Salt As String) As String
Using HashTool As New SHA512Managed()
Dim PasswordAsByte() As Byte = System.Text.Encoding.UTF8.GetBytes(String.Concat
[CODE]...
I was suggested this code:
public string encryptPassword(string Password, string Salt) {
Using;
((void)(HashTool));
[CODE]...
But it wasn't correct at all.
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Feb 18, 2012
I am creating a bulk media converter. In order to do this I need to go through each line in a list box one after the other and run the conversion function. I am trying to use the following:
For Each item In listVideos.Items
conversion code
Next
However this makes the program want to convert all videos at the same time... is there anyway to get the program to convert one video and then after the conversion code is completed to move to the next one?Should also be noted that I am using FFMPEG for this project.
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Jun 17, 2011
This code blow give me this error:
Conversion failed when converting date and/or time from character string.
Code
sqlstr = "select excute_main.*,cycle_main.cust_id,customers.name2 from excute_main,customers,cycle_main where date2 between '" & Format(MaskedTextBox1.Text, "MM-dd-yyyy") & "' and '" & Format(MaskedTextBox2.Text, "MM-dd-yyyy") & "' and excute_main.main_id=cycle_main.id and cycle_main.cust_id=customers.id"
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Mar 29, 2012
I have developed a vb.net application, which searches for different kinds of dates from a document. When i test the app on my Windows 7, VS2010 PC, the dd/mm/YYYY date read as string is correctly converted to valid date format, and then it can perform followingfunctiontstimespan =Date.Now.Subtract(Convert.ToDateTime(DesiredMatch.Value)).DurationIt works fine on development PC. But when i test the application on my client PC having Windows XP, it throws an error 'string was not detrmined as valid date time windows'.
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Aug 21, 2009
In C# you can use the implicit keyword to define an implicit user-defined type conversion operator.
In VB.NET you can define a CType conversion operator that will explicitly convert a user-defined type into another type.
Is there a way to declare an implicit conversion operator in VB.NET?
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Apr 8, 2009
a user will enter a number, n, which ranges from 1 to 30. they will also enter a "P" or an "S" (sum or product). depending on which was selected, it will calculate the sum or product of the numbers from 1 to n.i'm having a conversion error on line 5 stating "Conversion from string "S" to type 'Double' is not valid." [code]
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Jan 23, 2011
I have written a C++ code to modify a string, the code is:
int Len = (nString.length());
char *szString = (char*)(nString.c_str()); // Convert to C string
for (int i = 0; i < Len; i++)
[code].....
I have this so far, but it is not working:
Dim i As Integer
Dim chrArray() As Char
chrArray = EncryptIn.ToCharArray
[code]....
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Oct 13, 2011
well in a database is saved a binary code (this is a *.jar) i need to download this code (with a select query) and Rebuild this file
What are the setps for convert since a String to a File?
someone told me i need convert it to array byte, but i dont know how to convert a String to a array byte... what are the best steps?
this code return me a table
Public Function ConseguirCatalogo() As DataTable
Return conn.RegresarTabla("select archivo from catalogo where id= (select id from periodos where actual=1)")
End Function
[Code]....
now what are the next setp for convert it finally to a file? ( it is a *.jar)
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Oct 2, 2009
I have this code but the problem is that I get an error which says "Failed to convert parameter value from a String to a Int32." Here is the code that I am using:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim conn As New OleDb.OleDbConnection
conn.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = C:Documents and Settings1B09158My DocumentsUser.mdb"
conn.Open()
[CODE]...........................
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Jan 9, 2012
I'm looking for visual basic.net code (for visual basic express) to take automatic screenshots (timeout=60 seconds) for application testing. But every code has a lot of bugs:For example: [URL]Errors like:
Error 1 'Protected Overrides Sub Dispose(disposing As Boolean)' has multiple definitions with identical signatures.
Error 2 'Private Sub InitializeComponent()' has multiple definitions with identical signatures.
Error 3 'components' is already declared as 'Private components As System.ComponentModel.IContainer' in this class.
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Feb 18, 2012
how to code the automatic compute the date. Example In Date Applied the Date today February 18, 2012 then will be automtic compute in 10 days in Date Realesed February 28, 2012.i have code for the date this is for the DateApplied: Label26.Text = Format(Now, "MMMM dd, yyyy")
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Dec 8, 2009
my project was intially mandated to be done in c#.however a large contributor to the project wrote much of the business logic, which he knows well, in vb.net.How difficult would it be to convert the following c# code into vb.net.
[Code]...
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Jan 22, 2012
a simple question. Given the following code:
Public Class MyClass
Private WithEvents pPerClass As PersistableClass
Public Overridable Property PerClass() As PersistableClass
Get
Return pPerClass
[Code]...
the first being a duplication of the second key, strangely obtained from a private field.
If you remove the WithEvents keyword, the pPerClass_PersistableClassID key is not created.
I am new to EF but it seems to me a strange behaviour.
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Sep 8, 2011
I'm using VB.net to write a MYSQL application and one feature I need to add is the ability to add a column for each week that my employees worked. For example I want the first column to be called "W1" and the next one to be "W2" and so on, right up to "W52". How would I add a column to my table and have it's name add 1 to its current value? If there wasn't any letters in the name it would be easy but I need it to have the "W" in the title as well to avoid confusion. to add the column I have this:
Alter Table Manager ADD W1 MediumINT;
I just need the part that adds an INTEGER to a VARCHAR datatype if possible... Maybe there should be some sort of data type conversion involved? Just to explain further, the black bar at the very top are the date stamps for each week, I would like to have this included in the datagridview if possible but it is not required. Under each week column the employees will be entering the percents they worked (example: 20%, or 0.20 is one day of work) I know this is an odd way of doing things but its mandatory... and i was wondering if it were possible to automate the creation of these columns rather than me having to manually enter them.
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Jul 30, 2011
The intent of the code is to open an xls file -minimize it , search for keywords . there are columns like test case name ,priority(simple ,medium and high) with associated keywords.If keywords are found, it shld save the test case name - Priority in a text box. When i run this code i am getting err in
[Code]....
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May 2, 2011
How to convert an excel serial date as 39051,4387847222 in a datetime as 30/11/06 10:31:51 2549
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Jun 11, 2009
I want Excel data in a text file.
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Jan 19, 2011
Why can't I use = operator over here. Anyway to solve this problem ?
[Code]...
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Jun 6, 2011
I'm starting to write some code to run an office (not professionally). When I write the Client Class, how do I make it that the number of the client be a primary key (unique and auto incremental)? Also, I want that all the Client and Products data be stored on a txt file.
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Sep 18, 2010
I can't seem to get my Calculator off the ground. It seems so damn easy to make an application that can enter text into a Textbox, I can't seem to get the damn thing to calculate a value, ... I can do this very easily if I don't have any buttons or textboxes, I can calculate any number I like, ...
Simple Example, Put Imports System.Math at the Top.
[Code]...
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Mar 29, 2012
Dim ip_list, ipa, ipb, ip_start, ip_block, ip_end
Dim Response = Nothing
Dim SubNetMask
[code].....
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Apr 8, 2011
I'm trying to code a program but this error repeatedly shows up and I can't for the life of me figure it out EValue of type 'String' cannot be converted to 'System.Windows.Forms.TextBox'. It appears in relation to this code
[Code]...
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Oct 20, 2009
I am working on a site that I would like to pass information from one page to another. For some reason I keep getting the above error.
//Code
Partial Class Customer
Inherits System.Web.UI.Page
[Code].....
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Feb 10, 2010
I am working on a site that I would like to pass information from one page to another. I'm new to asp.net but not other languages, I'm just trying to learn some stuff. For some reason I keep getting the above error. The code I am using looks real similar to the code in the Murach book I am looking at
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Oct 9, 2010
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim connectionString As String
Dim cnn As OleDbConnection
Dim adptr As OleDbDataAdapter
[code].....
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Dec 7, 2010
Given a string as a form of input (parsed from an input file) which represents a number and a mathematical operator (<, >, <=, >=, !, !=, and a few others), what is a really fastefficient way to chop off that operator, compare it to a list of valid operators, and then set an "operator" variable to a state (i.e., Enum) representing the identified operator, then return just the number (as a string)?I'm open to various ideas and implementations.I've tried several (about 6-7) myself, and find I'm not really satisfied with the speedThe fastest so far is a For Each loop that walks my list of "valid operators", and compares that operator's string representation against the chopped off bit from the numeric string. I determine the amount to chop off by the length of each valid operator in the valid list.
Here's a code example of the fastest implementation. Assume input like <378 and a valid ops list of <, >, !, or >=79 and a valid ops list of <=, >=:
Friend Function FindMatchingOp(ByVal Haystack As String,
[code].....
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Aug 16, 2011
I need to know how to do a web service conversion which will convert only three figured whole numbers into strings??
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