Can anyone tell me if the Imports System.IO accepts all files types?? What I mean is, can I use it to access .csv, .xls or .doc files? And one other thing.Do I need to include the file location in the body of the procedure/function??
View 18 RepliesPublic Class Form1
Imports System.Math
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load[code].....
For some reason, when i try to start the program im getting the following errors: Error1'Imports' statements must precede any declarations.C:Vb10sbschap05My Framework MathMy Framework MathForm1.vb25My Framework Math
Error2'Sqrt' is not declared. It may be inaccessible due to its protection level.C:Vb10sbschap05My Framework MathMy Framework MathForm1.vb1018My Framework Math
Im using Visual Basic Express 2010.This is from a tutorial in Microsoft Visual Basic 2010 Step by Step
I am currently trying to create a DLL for use with a RESTful api. The only issue I have is that so that this DLL can be used in a service or a program without a GUI, so I can't use "Imports System.Drawing.Imaging" as this requires a form. I have looked around for examples to handle this without using this library but have had no luck.
[Code]...
Is there a way to use a generic that only accepts integer types?
I have a Clamp(value, min, max) function, and it would be nice if it could accept ints, uints, floats, shorts, ect without having to write an individual function for each type.
Suppose I want to write a function like the following (as usual, a trivial example for illustrative purposes):
Public Function calcSqSum(Of T)(ByVal list As IEnumerable(Of T)) As T
Dim sumSq As T
For Each item As T In list
[Code]....
As you can probably guess, this function causes an error because a generic object is not guaranteed to implement the + operator. As far as I know, though, any numerical type (Integer, Double, Decimal, etc.) will.
Is there a way to write a (quasi-)generic function that can accept any numerical type, without having to explicitly overload the function for every such type yourself?
Alternatively, I suppose an equally acceptable solution would be to somehow check if a type implements the '+' operator (or any operator generally associated with numerical types and used by the function).
I'm working on a basic file encryption by using the Imports System.Security.Cryptography.I was thinking of putting a password as a final security measure.Would i have to store the password inside the file or how will this work?
View 12 Replieshow can i import System.Windows.Forms in my asp.net class file?
View 2 RepliesI'm setting up a simple XML read-write demo (VB Winforms) in Visual Studio 2010 Premium (tried in both the RC and RTM) and added:
Imports System.Xml
Result: Error Namespace or type doesn't contain any public members or cannot be found...
VS 2008 equivalent example recognizes the Imports statement fine.I know this has to be me, but I'm stumped.
Note: I tried this with the app targeting both .Net 3.5 and 4.0. Same result.
Im working on my first n-tier application. I am trying to serialize a structure and Im getting an error"Soap Serializer does not support serializing Generic Types : System.Nullable`1[System.DateTime]."Here is the structure that is being serialized
Namespace Structures
<Serializable()> _
Public Structure structAllergy
Public AllergyID As String
Public ProfileID As String
[code]....
The bold line is the line that is throwing the error.
im making a md5 cryptology for a program, it work in everyform exept this one..
Imports System.Net.Mail
Imports System.Net.FtpWebRequest
Imports System.Net
[code]....
Is it possible to extend primitive types such as System.String and System.Int32 (IE: integer) in .Net 4 and if so how?
To be more specific, I am aware of the concept of partial classes but this doesnt seem to be the answer. Also I find that System.String is not inheritable and Int32 is a structure.
Lastly I am interested in knowing both a VB.Net and C# answer to the above question.
When trying to compile my newly created ClassLibrary class 'Validator' that validates entries made into TextBoxs or MaskedTextBoxs, I get the following error:
Warning 1 Namespace or type specified in the Imports 'System.Windows.Forms' doesn't contain any public member or cannot be found. Make sure the namespace or the type is defined and contains at least one public member. Make sure the imported element name doesn't use any aliases. C:Users erryDocumentsVisual Studio 2008ProjectsMillerClassLibMillerClassLibValidator.vb 1 9 MillerClassLib.
Following is the first part of code in the class:
Imports
System.Windows.Forms
Public
Class Validator
[code]....
What can I do to resolve this problem? The classes in this class library will be used to validate forms data input in a number of varied projects.
my computer is running Windows7 ,installed .net framework 4.0.I know "system.windows.input" be supported by .net framework 3.5, but does windows7 already has that?
I just want to get the button status of mouse.
i want to manipulate complex numbers and i followed that link but when i typed
Imports System.Numerics but it gives an error [URL] so how to overcome this problem?
[Code]...
With this line...
If PictureBox1.Image = My.Resources._2star Then
I get this error: Operator '=' is not defined for types 'System.Drawing.Image' and 'System.Drawing.Bitmap'.Is there another way to say = with images?
I have tried several ways but can not make this work. We are using .NET 2.0
vb
If DataGridView1.Columns(e.ColumnIndex).ValueType = GetType(String) Then
'this did not work either:
ElseIf DataGridView1.Columns(e.ColumnIndex).ValueType = GetType(DateTime)
[code]....
Quote:
Error15Operator '=' is not defined for types 'System.Type' and 'System.Type'.
I would like to populate a Combo with all the type names that a DataColumn can be ("System.String", "System.Boolean", etc). How can I do that without having to manually add the combo items?
View 4 RepliesI have a problem with Operator '&' someone may with this problem.
[Code]...
I am trying to concate string and system.type using operator & in VB and i am getting error :
[Code]...
I'm not sure if i titled this question properly or am asking it properly, but here goes.I've got serialized objects (in XML) stored in a database, along with a string/varchar indicating the type.
[Code]...
i am downloading data from xml using linq library those data i want to add them on a textblock item
TextBlock1.Text = TextBlock1.Text & result
but it has an error :
Error 1 Operator '&' is not defined for types 'String' and 'System.Xml.Linq.XElement'.
When i am changing this line to :
TextBlock1.Text = TextBlock1.Text & result.Tostring
it works but it adds this data :
"<"data> data <"/data>
instead of :
hello
Dim pt As Point, is the problem here, i know that this class point can belong to the types Inventor or System drawing.I want to make it part of the System drawing, how i do this ?
View 2 RepliesI would use the System.Linq.Dynamic. I added the specified Dynamic.vb file, that starts like this:
[Code]...
to my (VB.NET)solution. Now Visual Studio does not recognize anymore in the project files the System.XXX references, proposing me to change them to Global.System.XXX
'File' is ambiguous, imported from the namespaces or types 'System.IO, WindowsApplication1.Online.Suite'. whereas Online.Suite is a web reference
View 5 Replieswith this code dont know wht its not working source = wc.DownloadString(String.Format("http://" & cboHSearch & "/cse?cx=013269018370076798483:gg7jrrhpsy4&cof=FORID:1&q=" + cboEngine.Text + "&sa=Search", Me.cboEngine.Text.Replace(" "c, "+"c), resultCounter))
View 5 RepliesI'm coding this neat little project that's kind of a hack into the SanDisk U3 Cruzer's ability to have both a CDFS and FAT32 File System. This is helpful because the program is burned to the CDFS (It's basically slip streamed as an .ISO in place of the original U3 .ISO), and the settings files (which I've developed as text files) are placed on the root of the flash drive. The program itself is VERY simple actually, except I'm having a slight issue that's really driving me insane:
The drive path of the Flash Drive won't be the same from computer to computer. I.E... The files are "UAI.txt" and "UInfo.txt". The root of the drive on my comp is "I:", but on my laptop is "F:". So if I program the path from my computer as the absolute path, an exception is thrown when the path changes on another computer. I cannot have this happen. It is probably THE MOST crucial element to this program. How can you save and read info if you can't find the files? =P
So I've gone through so many threads and forums trying to find a batch of code to allow me to make the path relative. I've found the following code (modified, of course). It works PERFECT in Debug, but throws an exception once packaged to the CDFS partition:
[Code]...
<%@ Page Language="VB" AutoEventWireup="false" CodeFile="calctax.aspx.vb" Inherits="lab_week1_calctax" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
[code].....
What should i do to resolve this problem?what should i use to define mathematical operators?
This is what I have got so far:
Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
If FolderBrowserDialog1.ShowDialog = Windows.Forms.DialogResult.OK Then
Dim files() As String = IO.Directory.GetFiles(FolderBrowserDialog1.SelectedPath)
[code]....
if I use a third party distribution application like Setup2Go etc. to make my setup files, will my application run properly on user's computer?I mean how the required system files and dll files shall be included into my setup.exe?Does user need anything install, prior to my application's installation?
View 3 RepliesI am getting Errors: Operator '<' is not defined for types 'System.Windows.Forms.Button' and 'Integer'.
Operator '>' is not defined for types 'System.Windows.Forms.Button' and 'Integer'.
Value of type 'Integer' cannot be converted to 'System.Windows.Forms.Button'.
And my program does not work!
Below is my code..............
Private Sub ProgressBar1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ProgressBar1.Click
ProgressBar1.Value = TextBox1.Text
End Sub
[CODE]...