Make Object Plot Quickest Path To An Other Object?

May 20, 2012

Ok i need to make an object in this case a picture box draw a line to another picture box with the shortest length while avoiding other type of objects such as labels i am not sure how to do this but so far i have come up with

Private Sub ProgressBar1_ParentChanged(sender As Object, e As System.EventArgs) Handles ProgressBar1.ParentChanged
If ProgressBar1.Value = 50 Then

[code]....

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GDI: Make Drawn Object Move And Follow Path/Points At Constant Speed?

Nov 13, 2011

I've come across a very basic problem which I'm sure has a basic answer.Forgive me but I haven't programmed in years and this just a hobby of mine..My problem is that I need a drawn object (say an ellipse) to move to the cursors location when I click. Imagine an adventure quest style game where you view your character in birds eye view, and it moves according to where you click on the map.I can draw the image fine, and move the image around fine - it's more so the formula I'm using which I'm a little stumped on.I have certain requirements though.

1. I need a timer that constantly updates the drawn object's (lets say character from now on) location. Each tick will essentially be the character taking 1 step towards the cursor's location.2. At the end of each tick of the timer, it'll will invalidate the form/control to invoke the paint event, and of course, the objects location will be be updated.It sounded simple enough to create a linear equation based on the objects original location and the location of the cursor when I click.However, that will not give it a fixed speed.If say for example, the gradient (rise/run) between the cursor location and objects location is very steep, the object's y-velocity will be greater than that of the x-velocity

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Get A Path Object From A Given Directory Object?

Oct 4, 2011

I'm writing a function like this:

Private Function mostRecent(ByVal folder As Directory) As Date
'function to convert the given directory param as a path obj
Dim foldPathStr = Path.GetFullPath(foldPath)

[Code].....

I'd like to fill in that commented line with a built-in command, if available. If not, guess I'll change the parameter.

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C# - Make An Object Accessible To Only One Other Object In The Same Assembly?

Sep 15, 2009

Each business object has a matching object that contains sql calls. I'd like to restrict these sql objects in a way where they can only be used by the matching business object. How can this be achieved?

Update Greg brought up the point about testability. Since the SqlObjects will contain very business-process specific sql I don't want them reused in multiple buiness objects. (Basic CRUD operations are all code-generated) Is there a way to make the SqlObjects accessible to only one business object in the business assembly (like yshuditelu and Greg Beech showed) AND expose the SqlObjects to the unit testing assembly?

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Flattening An Object Hierarchy Using A Shim Class - Initializing Derived Object Properties From The Base Object?

Jul 10, 2010

I am somewhat new to object oriented programming and am attempting to flatten a Linq object hierarchy by using a shim class.how to initalize a derived class with property values from a base class?I have two objects, a base object with about 100 properties, and a derived object which inherits from the base object and adds a few additional properties beyond those of the base object. My simple constructor creates the derived object, but I am looking for a way to initialize the derived object properties with values from the base object.Right now I am using reflection to iterate over the properties individually and I suspect there may be a better way. The following example shows my shim class constructor for the derived class, and two properties:

newProperty1 - a new string property of the derived class

flattenedProperty2 - a new string property of the derived class, copied from a 2nd-level object of the base class

Code example:

Public Class derivedObj
Inherits baseObj
Private _newProperty1 As String[code].......

Is this the correct constructor approach to flatten the object hierarchy using a shim class? My second question relates to initialization of properties in the derived class. The constructor above creates the derived object, but what is the best way to initialize the derived object properties with values from the base object? The following code uses reflection to iterate over the properties individually, but I suspect there may be a better way.

Code example:

' property names are in the string array fieldNames

'baseObjQuery is an ienumerable of baseObj

'derivedObjList is a list of derivedObj[code].....

Is there a simple way to initialize values for the properties in the derived object based upon the values of the common properties in the base object?

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Get Runtime Path Of OLE Object?

Apr 16, 2010

I've trying to get the runtime path of an OLE Object stored in a database. The code below is used to get the Ole Object (In this case a PDF document).

[code]...

Currently, all that's being returned is a pile of bytes of which I have no clue of how to handle.I need to somehow find the path at runtime of this PDF file in order to use it as the value of the 'src' property (string) for my Adobe Reader control.

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Embedded Object Disk Path?

Oct 22, 2010

How can I programatically find the path and file name for an embedded object in an Excel worksheet? I know I can right click on the object and select Packager Shell Object and then Properties to find the information

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Find A Path Get One Object From One Point To Another?

Dec 11, 2010

I started making a game in VB.NET, but I am stuck on the pathfinder. There are round objects. I want to know how to find a path get one object from one point to another (or at least as close as possible) without any collisions.

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Create A Tree Based On Path Of Object?

Sep 20, 2011

I have a bunch of objects, they aren't in XML but the xml document would look like this[code]...

The tree is obviously very deep. Does anyone have an algorithm to create this into a jstree, series of "UL" and "LI". It would be christmas if you had the code in vb...but I will be satisfied with just the logic. My thought is to eventually make this into a jsonp web service so I can use jstree to build a tree, but for now im just trying to understand the logic necessary to parse this correctly.

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Create A Tree Based On Path Of The Object?

Jul 14, 2010

I have a bunch of objects, they aren't in XML but the xml document would look like this:

<object>
<path>root</path>
</object>
<object>

[code]....

The tree is obviously very deep. Does anyone have an algorithm to create this into a jstree, series of "UL" and "LI". It would be christmas if you had the code in vb...but I will be satisfied with just the logic. My thought is to eventually make this into a jsonp web service so I can use jstree to build a tree, but for now im just trying to understand the logic necessary to parse this correctly.

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Error - LINQ To Entities Does Not Recognize The Method 'System.Object IIf(Boolean, System.Object, System.Object)'

Jul 29, 2011

I am getting following error whenever I want to use IIf function inside entity framework query.

LINQ to Entities does not recognize the method 'System.Object IIf(Boolean, System.Object, System.Object)' method, and this method cannot be translated into a store expression.

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Unable To Rename A File After Storing Path In An Object Array?

Feb 10, 2010

I create a string array from a bunch of files that were dropped on a control after that i use a loops to pass that data into an array of my pictureObjects object (just stores filePath info and some other things).for some reason after it's been passed to the control the "My.Computer.FileSystem.RenameFile" doesn't seem to work at all... it's a valid file name and everthing.

Dim sFileArray() As String = e.Data.GetData(DataFormats.FileDrop)

'load sFileArray into new array of picureObjects
ReDim dropedPicture(sFileArray.Length)
Dim dropedOnPictureBox As Integer[code]......

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Method 'System.Object CompareObjectEqual(System.Object, System.Object, Boolean)' Has No Supported Translation To SQL.?

Apr 16, 2010

What do I need to convert?

Dim CEESearchByAppNo = From CEEsearch In dbCEE.tblScanneds _
Where CEEsearch.AppNo = iAppNo

[code].....

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Calculate The Direction An Object Is Facing In Degrees If Object A Is At X1, Y1 And Facing Object B Which Is At X2, Y2?

May 8, 2009

How do I calculate the direction an object is facing in degrees, if object A is at x1, y1 and facing object B which is at x2, y2?

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Exception Found - Cannot Access A Disposed Object. Object Name:'System.Net.Sockets.NetworkStream'

Dec 31, 2009

Occasionally I encountered this exception message while trying to download file from a server using System.Net.FtpWebRequest and System.Net.FtpWebResponse Object.

Download a file.ftpRequest_DL.Method = WebRequestMethods.Ftp.DownloadFile get the response object
Dim ftpResponse_DL As FtpWebResponse = CType(ftpRequest_DL.GetResponse, FtpWebResponse)

[Code]...

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Object Scope - Lose The Object In Selected Date Change Event In Calendar

Oct 18, 2010

If I declare my object at the beggining of my page class, and instantiate it in a dropdownlist selected_index change event. Shouldn't this object be available thru out the entire page and also persist thru a postback? I lose the object in my selected date change event in my calendar.

[Code]...

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Very Simple Ssis Script Transformation Giving Object Reference Not Set To An Instance Of An Object

Mar 1, 2012

I have an ssis package that takes a flat file and dumps it to SQL. During that process, 150 columns need to have '-' and '.' removed from them. I have done this using a Script Transformation.

Public Overrides Sub Input0_ProcessInputRow(ByVal Row As Input0Buffer)
Dim column As IDTSInputColumn90
Dim rowType As Type = Row.GetType()

[code]....

Edit I've discovered that this line is the problem

Dim strCol As String = columnValue.GetValue(Row, Nothing).ToString()

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.net - Process.start System.nullreferenceexception: Object Reference Not Set To An Instance Of An Object

Oct 16, 2011

I am trying to start the process with the following parameters When I try to start it though I get an System.nullreferenceexception: Object reference not set to an instance of an object

Dim exepath As String = Application.StartupPath + "inffmpeg.exe"
Dim sr As StreamReader
Dim cmd As String = " -i """ + input + """ -ar 22050 -y """ + output + """"
Dim ffmpegOutput As String

[code]....

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Asp.net - Checking For A Session Variable... Returns (Object Reference Not Set To An Instance Of An Object)

Jan 12, 2011

In the Session_Start of the Global.asax i have

Sub Session_Start(ByVal sender As Object, ByVal e As EventArgs)
Session("login") = False

[code]....

Why i am getting error the error Object reference not set to an instance of an object. at line

If Current.Session("login") Is Nothing Then

while checking for the login state as follows?

If GetLogin = False Then
'Do something
End if

I mean i have already created the instance on the Session_Start... Haven't i?

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Create A Global Object But Have The Events Within That Object Fire On A Separate Thread?

Oct 26, 2009

I have an object that is defined as a global variable based on custom class. Within that class I have an event that gets fired a certain intervals. These events are fired on the same thread as where the object is declared. How do I create a global object, but have the events within that object fire on a separate thread?

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Error System.NullReferenceException Occurred - Object Reference Not Set To An Instance Of An Object

Jan 12, 2010

i am using VB.net 2003 and i am trying to get the number of rows of a dataset from form1 into form2 in order to use it for something else and i am getting the error"System.NullReferenceException occured...Additional information: object reference not set to an instance of an object"...my code is like this:in form1:Public x as integer= me.dataset.table.rows.count here it gives me the error

in form2:
dim frm as new form1
msgbox(frm.x)

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Error: System.NullReference Exception: Object Reference Not Set To An Instance Of An Object

Jan 5, 2010

I am getting this error when I try to print my report. Here is my print code.

Private Sub PrintToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PrintToolStripMenuItem.Click
Dim Print_Dialog As New PrintDialog

[code].....

Here is my error: System.NullReference Exception: Object reference not set to an instance of an object.

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Format Date In Data Grid View Object Not Set To An Instance Of An Object?

Jan 29, 2012

I'm trying to set the format of a column in a datagridview.When I put the format statement in the on load event for the form, it has no effect. When I put it in the cellformatting event I get the "Object reference not set to an instance of an object" error. I checked the column name. What I am doing wrong?

This is the code:Private Sub MeetingTblDataGridView_CellFormatting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles MeetingTblDataGridView.CellFormatting
Me.MeetingTblDataGridView.Columns("Starttime").DefaultCellStyle.Format = "HH:mm:ss"
End Sub What I'm trying to do is get rid of the date part of a Date/Time field (stored in an Access database) in a datagridview column.

dp.SyntaxHighlighter.ClipboardSwf = '/dp.SyntaxHighlighter/Scripts/clipboard.swf'
dp.SyntaxHighlighter.HighlightAll('09dde30f062e451a854266e66205b1cf')

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Handle An Object's Object Property Changed Event In .NET Windows Forms?

Jun 7, 2012

I know how to handle a single objects property changed event very easily. I want to handle a objects property changed event that is part of another object.

Given Object:

[ObjectY = Y]
+ Public WithEvents X As ObjectX

I would like to do something like:

Private Sub XPropertyChanged() Handles Y.X.PropertyChanged

Right now I need to create a object that equals the object inside that object and then handle this variable pointers property changed, but that is just annoying.

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Line Of Code Is Generating This Error - Object Reference Not Set To An Instance Of An Object?

Aug 14, 2010

with datagridview1

while looping through all the cells

i am trying to allot a cell value to another cell value basing on some conditions
& finally delete one column.my code is as fallows

Dim i, x As Integer
i = 0
x = Me.DataGridView1.Rows.Count[code]....

error i am getting is : Object reference not set to an instance of an object.it is extremely surprising for me the same code has worked nice for me but why & how the same line of code is generating this error.

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Microsoft Activex Component Can't Create Object While Initializing An Object Of SoapClient30

Jan 12, 2011

I am trying to write an VBA application in Excel 2010 using "Microsoft Soap Toolkit 3.0" on 64 bit Windows 7 to consume an web service. But i got an error while initializing an object of SoapClient30.

Error message is :: Runtime error '429' :ActiveX component can't create object.

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Object Collision - An Object Bounce Back When It Collides With An Rectangle Shape?

Mar 21, 2012

how I could have an object bounce back when it collides with an rectangle shape. There are multiple rectangle shapes and I don't want to do it all seperately for each one.

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Object Reference Not Set To An Instance Of An Object When Searching For User In Active Directory?

May 8, 2012

I tryed searching for an user in active directory using the code below but it gives me the error in the title of this post above:

AD = New DirectoryEntry("LDAP://OU=SchoolOUhere,OU=Staff,DC=garrard,DC=ketsds,DC=net", "", "", AuthenticationTypes.Secure)
AD2 = New DirectoryEntry("LDAP://OU=_Groups,OU=Staff,DC=garrard,DC=ketsds,DC=net", "", "", AuthenticationTypes.Secure)

[Code]...

Once you eliminate the impossible, whatever remains, no matter how improbable, must be the truth. - "Sherlock holmes" "speak softly and carry a big stick" - theodore roosevelt. Fear leads to anger, anger leads to hate, hate leads to[URL]...

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Object Reference Not Set To An Instance Of An Object With A Class With An Array Of Classes As A Member?

Aug 6, 2010

Here is the structure that I have:

Friend Class StandardFormatFile
Friend fileType As String
Friend numberOfSeries As Integer

[code].....

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VS 2008 - Error With Arraylist In My.Settings - Object Reference Not Set To An Instance Of An Object

Mar 14, 2010

The issue is when I try to add a new item to the ArrayList with the following code, it gives me an error:

vb Private Sub btnLabelAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLabelAdd.Click
Dim result As String = InputBox("New Filter Label:", "Label List")

[CODE]................

Object reference not set to an instance of an object.

I'm not really sure what I'm supposed to be doing with this. It's a new setting I just added and it's empty, so I'm not sure if that has anything to do with it or not. Anyone know what's going on and what needs to be done to get it to accept a value and not want to be "initialized"?

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