I have following code:
Dim len As Int32 = 1000
Dim rdlen As Int64 = 2000000000000
Dim totlen As Int64
Which example is the correct way to use System.Convert.ToInt64 function?Example one:
totlen = System.Convert.ToInt64(rdlen + len)
Example two:
totlen = rdlen + System.Convert.ToInt64(len)
I know this is probably a stupid question. I am converting a huge string to a integer, it is not working.....saying the number is too large to handle. It is only a 10k character string.I figured this would be fine because 2^16 power is 18446744073709551616.
View 5 RepliesI am trying to convert a DLL function call which has the Callback function routine called within the DLL function call.The DLL function call signature is like this:
typedef void *HANDLE;
typedef HANDLE HACQDESC;
DECLARE_HANDLE (HWND);
[code]....
how to convert this DLL call to VB.NET and also how to create the callback function and send it as parameter to this function
call.
I´m gettin the error Calling the fuction GetListItems but is kind weird because it works in Visual Studio 2008 Express but no in Visual Basic 2010 Express:
Dim ndQuery As XmlNode = xmlDoc.CreateNode(XmlNodeType.Element, "Query", "")
Dim ndViewFields As XmlNode = xmlDoc.CreateNode(XmlNodeType.Element, "ViewFields", "")
Dim ndQueryOptions As XmlNode = xmlDoc.CreateNode(XmlNodeType.Element,
[Code].....
I am using Visual Studio 2005 and am writing a SSIS package. In the package I have a VB.Script that looks at a directory on a server and creates a list of the files. I then have a store Proc that looks at a table and gets a list of files that matches the files in the first array. The result is a fullresultset. The next step I need to create a 3rd array that only contains the rows from the first that are not in the second. However, I am getting the following error. Error: The script threw an exception: Unable to cast object of type 'System.Object' to type 'System.Collections.ArrayList'.
View 3 RepliesIs it possible to convert an object form System.Drawing.Graphics to System.Drawing.Image?
View 4 RepliesHow can I convert an object of type System.Data.Linq.DataQuery to System.Linq.IQueryable?I'm working with Visual Basic/Silverlight, and the source code of my query is as follows:
Public Function Get_Cli_Pag() As IQueryable(Of V_Cliente_Pagare)
Dim Qry = From P In Me.Context.Pagares Join C In Me.Context.Codigos On C.Codigo
[code]....
Value of type 'System.Func(Of String, String)' cannot be converted to 'System.Converter(Of String, String)
Why? They are both effectively a function pointer (or delegate?) to a function that accept a string and return a string.
I have a System.Drawing.Graphics g, which draw something in a PictureBox. Now I want to export this pGraphics to a new System.DrawingImage pImage (or Bitmap). But how?
Dim pImage As Bitmap
Dim g As Graphics
g = Graphics.FromImage(b)
[Code].....
I have two graphics I'm trying to superimpose into one, then display in a DataGridViewImage cell...The Value property of a DataGridViewImage is an Image type.
Dim Image1 As System.Drawing.Image = imgl_Imagelist1.Images(0)
Dim Image2 As New Bitmap(imgl_ImageList2.Images(0))
Dim DualGraphic As Graphics = Graphics.FromImage(Image1)
[code].....
In VB6 there was a function called String$. Is there an equivalent of this in .NET?I am trying to convert this function from VB6 to VB.NET
VB6 Private Function ByteOrder(ByVal vNumb As Variant, ByVal vByte As Variant) As String
Dim bLeft As Byte Dim sNumb As String
[Code]...
only code I can find after several hours of searching is a PHP function. Although I can more or less see what's happening, I'm not able to convert everything. The main problem is the "temp_getBytes" function. I don't know how to convert that.I already have the file as a byte array, because it was decrypted, so I'm writing the byte array to a memory stream in order to work with the data. I've added a bunch of question marks where I'm having a problem converting the code.
vb.net
Imports System.IO
Public Class Form1
[code].....
I need to convert this function to C#.
Public Function GetAppGUID(ByVal sectionId As String) As String
Dim hexString As String = Nothing
Dim i As Integer[code].....
I'm using a SQL Server database and a bindingsource, and i want to filter a numeric field in order to, for instance, when I write 1, the grid shows all the rows in which that field begins whith 1 (1,10,14...). In order to do this, I have to convert the field to varchar, but VB shows an error message when using cast or convert functions. I have this sentence in my
[Code]...
Here there's an old question about this code.
xmpp.OnLogin += delegate(object o)
{
xmpp.Send(
[code]....
I have this function that maps a IDataReader to a class. It is obviously written in C#. My co-worker wants to use the same method in his code, but he is writing in VB.net. Basically I am having difficulty rewriting this due to the Lambda expressions used in C#. He is running .Net 3.5.
[Code]...
I'm trying to convert C++ API to VB.Net, but this function is too hard and i don't know how make it work.
Here is the API doc for this function:
void RemoteDllSetReceiver(void *inst, on_received_buffer_t received_buf_cb);
Sets a callback function to receive notifications from the DLL. The prototype of the callback is:
typedef bool (*on_received_buffer_t)(void* inst, const unsigned char *buffer, unsigned int size);
Where inst is the pointer originally passed to RemoteDllSetReceiver buffer & size contain the notification text as defined in the Remote Protocol. Note: notifications may arrive in different threads (e.g. network, timer, audio).
I can't imagine what i mus do with on_received_buffer_t, must it be a delegate? Like you can read, this functions returns notifications from the DLL like connection status, user id...
I have some vb code i would find it helpful if someone was able to convert it to c# for me. I dont really know what the left function does?[code]...
View 2 RepliesLooking for the function to convert 8.5% to .085
View 3 RepliesI am trying to convert the image from 'System.Drawing.Bitmap' to 'System.IO.Stream', but i am getting an error.
the error is: Value of type 'System.Drawing.Bitmap' cannot be converted to 'System.IO.Stream'.[code]...
[code]How I can convert System.uri to string ?
View 6 RepliesI am having trouble getting server variables remotely in VB .Net I need to basically mimic this PHP Function.
function showvar($string)
{
if(isset($_SERVER[$string]))
[Code]....
Atleast show me how to return one variable.
I try to convert names and values parameters of function into a hashtable. For name of parameter, it's ok, but not for value.
Function test(ByVal param1 As String, ByVal param2 As String) As Hashtable
Dim hash As Hashtable = New Hashtable
Dim stFrame As New StackFrame
[Code]....
There is a property to get default value of parameter (if optional) with param.DefaultValue but how to get current value ?
I have some C# code I'm trying to convert to VB.NET. There are some external dependencies I'm referencing in each project. The C# line is
TWriteFileCommand writeFile = (TWriteFileCommand)CommunicationLink.CreateCommand(TOPKernel.TCommand.CommandType.WriteFile);
I don't really understand what the TWriteFileCommand in parathesis after the equal sign is for in that statement. When I try to do it in VB.NET, I keep getting errors because I can't get a reference to the CreateCommand function. The closest I've gotten is this:
Dim MyAppBase As OPSupport.App.AppBase
Dim writeFile As TWriteFileCommand
writeFile = MyAppBase.CommunicationLink.CreateCommand(TOPKernel.TCommand.CommandType.WriteFile)
However, I have a green underline after the equal sign @ MyAppBase that flags an error "Variable MyAppBase is used before it has been assigned a value. A null reference exception could result at runtime."What am I missing? Why in the C# code is the instance fine and what do I need to get the equivalent instance in VB.NET?
I am new to vb.net and would like to be able to convert the following code to it's own function - either inside the current module or better yet in a seperate class.This code currently runs in the KEYPRESS event and ensures only numbers, decimal point, 2 decimals etc. are entered and not letters. Works exactly how I want it but would now like it in a function.I need this code in numerous text box controls but I would rather just call it somehow with a function.
View 3 RepliesI am looking for a utility/tool to convert calls to legacy VB6 functions to the .NET equivalent. For example, it would convert this...
[Code]....
Does anybody know of one, or am I going to have to roll my own?
Any VB/Javascript guru out there that can convert this for me?[code]...
View 1 RepliesI have a very old app that uses a little function that calculates a value and after that i get the hash code of that value, that it's used as a password to unlock some functionalities to the user. Now the manager has a 64 bits computer and the function returns a different value. What i need it's how to convert this function from C# to Vb, i know that I can use the converts, but they don't work, pointers. Code: Can I convert this function?
View 1 RepliesThis is the Delphi code I'm trying to convert to .net:
s1 := Copy ( s1 , 1,x - 1) + Copy(s1, x + 1,Length(s1));
I tried:
s1 = s1.Substring(x - 1, 1) + s1.Substring(s1.Length, x + 1)
But I get error's when the index is out of range. in Delphi it works fine.
Added one line to convert..
s2 := s2 + chr(3);
Im trying to convert the English system into the metric system in visual basic, here is what i have so far
Sub Metric()
Dim num As Single
num1 = InputBox(" enter feet...")
num2 = InputBox(" enter inches...")