.net - C# : How Much Memory Does A System.Func Holds
Apr 23, 2011exactly how much memory does a System.Func holds?Is there any difference if the System.Func is 1 line or 1000 lines?
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Call Overridden ClassA.func() From GrandChildClassC.func() Without Invoking ChildClassB.func()?
Jan 26, 2010[Code]...
I know how to do the code shown in ClassA and ChildClassB, but how do I go about coding the example in GrandChildClassC, which needs to not do the stuff that ChildClassB does in this function, but still do what Class does.
Asp.net - Fix Func Is Ambiguous In The Namespace 'system' Compiler Error
Dec 8, 2011I have a method that looks like this :
Function ExecuteAndLogError(Of TResult)(ByVal code As Func(Of TResult), _ByVal sql As String, _Optional ByVal parameters As SqlParameterCollection = Nothing) As TResult End Function
I am getting this compiler error : 'Func' is ambiguous in the namespace 'System'.
[Code]...
Nested Function Does Not Have The Same Signature As Delegate 'System.Func(Of Object)'
Apr 5, 2012I have a section of code that deletes a lot of columns, one at at time, based on conditions that arise. Currently it does this:
objrpt.objXLSheet.Columns(col) _
.EntireColumn.Delete(Excel.XlDeleteShiftDirection.xlShiftToLeft)
There are so many of these, that I'm getting tired of looking at these lines so I want to curry the references to the Excel stuff.I tried:
Dim DelCol As Func(Of Integer) = Function(col As Integer) _
objrpt.objXLSheet.Columns(col) _
.EntireColumn.Delete(Excel.XlDeleteShiftDirection.xlShiftToLeft)
but that won't compile, giving me the error: "Nested function does not have the same signature as delegate 'System.Func(Of Integer)'. Ah forget it. I see that I'm trying to call a method from a function. I guess that won't work.Wait, I'm now trying it another way. I first defined a function:
Private Function DeleteColumn(ByRef objrpt As ExcelReport, ByVal col As Integer) As Object
DeleteColumn = Nothing
Dim objrng As Excel.Range
[code]....
Now the error message is a little different:
"Nested function does not have the same signature as delegate 'System.Func(Of Object)'.
Value Of Type 'System.Func(Of String, String)' Cannot Be Converted To 'System.Convert
Feb 17, 2011Value 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.
System Out Of Memory Exception
Jun 12, 2011I am working with application for Excel sheets in vb.net.My database is Sql server 2005.I am having around 8 lakhs of rows in my database and 64 columns.when I import a excel sheet for searching the Duplicate of excel sheet rows in database i get this Error System Out of Memory Exception.What is the reason to occur this kind of Error.Is it due to Excess of rows in database or coding error in Application.
View 2 RepliesData Structure Memory - System Resources
Feb 27, 2009I was wondering if there was a way to find out how much memory a data structure too up. So say I declared a list of strings.
Dim theRN As New Dictionary(Of String, Integer)
Say it had 25 elements in it. How to find out how much memory those 25 elements are costing me?
When Use System.io.ReadLines The Content Of The File Should Not Be Loaded To Memory Right
Feb 13, 2011When we use system.io.ReadLines the content of the file should not be loaded to memory right? say I want to create a function. The function accept a string, say "post.txt" where post.txt is a large file (3G) I want to put the first 100k line of post.txt on post.txt and the rest on reserve_post.txt
View 11 Replies.net - Difference Between Return And Func()=?
Apr 26, 2011Is there any difference between the following:
[Code]....
.net - Generate A PDF File As System.net.mail.attachment Using Memory Stream?
Nov 25, 2011I have a function that accepts a string and generates an email attachment based on that string. It works fine for html pages, text documents, and so forth but I can not get it to generate a PDF file.
Code:
Public Sub SendMail _
( _
ByVal strFrom As String _
[code]......
If I save the file attachment as Whatever.PDF i get the error that it was not encoded properly.I am using datadynamics active reports PDF exporter to generate the PDF
dim pdf as new datadynamics.activereports.export.pdf.pdfexport
sendmail("from@", "to@", "test", "test", pdf.tostring, "pdf.pdf")
I think the problem is I am converting the PDF to a string, and then trying to convert it back to a PDF and attach it to the email but I am not 100% sure.
StringBuilder.Tostring Method Throws Exception As System Is Out Of Memory In 2.0
Jul 12, 2010I am using .net 2.0 and I am getting an exception of system is out of memory. My existing function takes datatable as input parameter which contains little bit large data (eg. more than 35000 rows) and in that function I am appending some xml node data and atlast I am returning the stringbuilder as a object.
[Code]...
System.AccessViolationException: Attempted To Read Or Write Protected Memory?
Aug 20, 2009I receive random AccessViolationException on client machines. I have captured the exception text and have pasted it below. Unfortunately this error is not happening on code that I have written it appears to be happening when the .NET is trying to draw a group box on the form. System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.at System.Drawing.SafeNativeMethods.Gdip.GdipDrawLineI(HandleRef graphics, HandleRef pen, Int32 x1, Int32 y1, Int32 x2, Int32 y2)at System.Drawing.Graphics.DrawLine(Pen pen, Int32 x1, Int32 y1, Int32 x2, Int32 y2)
[Code]...
System.out Of Memory Exception For String Builder In SSIS Script Task
Oct 21, 2011I am using a VB script in SSIS Script Task to add header and Trailer to a flat file. The code was working fine until recently i came across a problem where the rows in the file are more than usual and resulting in a failure on script task with error`Error:
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.OutOfMemoryException: Exception of type 'System.OutOfMemoryException' was thrown.
[Code]....
Call WebBrowser1.Document.applets(0).func?
Jun 26, 2009How do I can call the code like: WebBrowser1.Document.applets(0).func()I was answered that it is possible in VB 6 and earlier.
View 3 RepliesIEnumerable.where In Linq How To Get Obj&return Value Of Othr Func
Apr 4, 2012How to give another function's returned value in LINQ Ienumerable.
Private function GetFruitColor(fruit) as string
'It returns fruit color.
'If valid fruit and color not available, it returns ""(empty string)
[code].....
'Below code is wrong. but please suggest me how to correct it. My intention is, I want output collection(say dictionary) of each fruitname and its color(returned by other function call) for all the fruits which the GetFruitColor is not nothing(it can be empty or valid string).
Dim query = _
fruits.Where(Function(fruit) k= GetFruitColor(fruit) if not k is nothing select fruit, k)
End Sub
How To Make A Program That Holds A Dll
Jan 24, 2011How can I make a program that holds a dll(Ex: when i press the extract button it extracts it to the specified path)?Well, If it is not worth it, it is not fun - you say programmers are boring but i say they are worth it.
View 5 RepliesWay To Have An Array That Holds Other Arrays
Dec 8, 2011Is there any way to have an array that holds other arrays in VB? So you could call it like Array1(Array2(0))
View 2 RepliesCheck If Variable Holds An Instance Of Class?
Apr 10, 2011Dim myObject As Something There I defined my variable myObject of type Something. But, as you can see, I am giving it no value yet. Sometime on runtime I want to check if myObject is holding a value or not. I tried this: If myObject <> Nothing Then But apparently I can't do such comparison.
View 3 RepliesCreate Custom Shape That Holds Icons?
Oct 14, 2009I want to be able to create a custom shape that holds icons. Lets say for simplicity that it is a sqaure. I need the ability to load up to X amount of icons in the square. Lets say I need up to 6 icons. These icons will always be the same. However not all custom shapes will need them. I am assuming that I have to create a custom shape object class. I also want the icons to automatically adjust in size when I change the size of the shape. I am guessing that one way to do this would be to drop a TableLayoutPanel into the shape and then dock it to the shape. Then set the dock property of the icon to the cell that it resides into within the TableLayoutPanel in the shape. The number of rows/columns of the TableLayoutPanel would be predicated on the number of icons needed.
View 16 RepliesCreating A Class That Holds/draws Some Graphics?
Jan 13, 2011Ok, I want to create a class that will handle a special rectangle graphic.In my form, I want to have two of these special rectangles.So, basically, I need two instances of that class in my form, right?I manage to initialize two, alright. But, how exactly am I supposed to manage drawing/graphics etc in a class, and the results to be displayed in my form?
View 2 RepliesDatabase That Holds Dates As Strings In Format?
Jul 7, 2010I have a field in my database that holds dates as strings in this format: dd/MM/yyyy Now I want to load then into a var as dates vb.net Dim dte as date I am having problems with the format. Vb doesn't recognize my date format as a date when I use this for expample:
vb.net
Dim strDate as string = "22/05/2010"
Dim dte as date
dte = CDate(strDate)
Make A Program That Holds Info In The Settings?
Mar 24, 2011i am trying to make a program that holds info in the settings... it holds it in an array so that you can add to it and take away from it... he is the code i have so far....
So far it is just the adding part but im still haveing some problems...
Public Class Form1
Public Function array_use1(ByVal array_string As String, ByVal number As Integer)
Dim num_holder As Integer = number
[Code].....
im trying to get this done so i can demonstrate how it works to some friends.
And also note that i dont want you to like write out a bunch of code then tell me its the right way...
Make A Variable That Holds Double Qoutes
Feb 10, 2011How do I define a variable which holds double quotes. when I try to define the variable like this [code]...
View 2 RepliesProtect Dll - Simple Dll Which Holds Some Functions - Keep Private
Apr 29, 2009I made a simple dll which holds some functions I would like to keep private, how can I protect it against other people using it? As it stands all you need to do is add it to resources and it shows all of the functions.
View 7 RepliesWhen 'movenext' RS RS2 Still Holds Previous Record Data?
Jul 1, 2009I know its .net but i am still using ADODB this is just a sample table, not really what i am doing..I want to take a look at a bunch of records until the customer changes. then i want to have the previous recordset data displayed or passed off to another function how do i set RS2=RS but when i "movenext" RS RS2 still holds the previous record data? [code]
View 2 RepliesCan't Seem To Pass Variable That Holds Last Name Into SQL Query To Filter Data
Oct 9, 2010I've been trying to add a database to my interface, and i can't seem to filter the data, i want to search based on last name and only display people with the that last name (the last name will be entered in a search form).I've tried writing SQL Queries but I can't seem to pass the variable that that holds the last name into the SQL Query, to filter the data.
View 3 RepliesForms :: Close Form - App With Vb 2010 Which Holds A Mainform
Oct 24, 2010I've made an app with vb 2010, which holds a mainform. On it is a menutoolstrip with button, when I click on that button a second form is opened on a second monitor and the button is being checked (different color).
When I click the button again, it is unchecked, but the form on the second monitor is still open, while it should be closed.
Here is the code I use:
CODE:
VB 2008 - Make A Variable That Holds The Value Of The Directories That Exist In The C:?
Nov 8, 2009How would I be able to make a variable that holds the value of the directories that exist in the C:?
View 2 RepliesLoad More Data Inside DATAGRIDVIEW Without Getting The "System.Out Of Memory Error"
Oct 13, 2011In a DataGridview i want to show nearly 50,00,000 records. After data binding to the datagridview, I want to change some Values in some columns in each row. So, while Looping after some time i am getting the "System.Out of Memory error". How can i display data without getting this error. Is there any easy way to display large data in a datagridview.
View 1 RepliesSystem Memory In Bitmap - Using Bitmap To Show Picture Box Like Slideshow Using Timer
Jul 3, 2011I'm using Bitmap to show picture box like slideshow using Timer. For each timer interval, I've to go for new instance of Bitmap, there System memory increases to 1MB, How to resolve this, 'BG is picture box
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tic Dim img As Bitmap
img = New Bitmap(System.Drawing.Bitmap.FromFile(FileIO.FileSystem.GetFiles
[CODE]...