.net - Difference Between String.Sort And Greater Than/Less Than Operators .Net?
Sep 28, 2011
I have a simple routine to find the next object based on a name property in an un-ordered collection of objects. I go through the collection and collect all the names in a List(of String) adding any names that are > my current name, which should give a list of everything that comes after the current key. I then sort the list using the default .Sort() method on the List(of String) and take the first item in the list, which should be my next item. I do the reverse to find the previous item, add all items < my current name, sort, and take the last item in the list.
However, this method skips over some items. For example I have items named 1210, 1210-ADA, and 1210_ADA_DB. Using this method, getting the next item skips the middle item 1210-ADA and finds 1210_ADA_DB, but finding the previous item seems to work.
I recently installed visual studio 2010 and am using visual basic.The problem I am having is that some operators do not show up within the editor. For example the code line below test = 3 + 5 - 6 / 7 * 4
only displays
test 3 5 - 6 / 7 * 4
the = + operators are not visible although they are there since the program will work as intended....and if I open up the .vb file in notepad everything is there. It just won't display within Visual Studio.
In my application, a string generated its length can varying from 1 to 100 (not using random number algo). But I want if length is less than 7 than need to add integers 1,2,3.. untill its size reach to 7. I implements it using while loop as :
If generatedUserName.Length < 7 Then Dim count As Int32 = 0 While generatedUserName.Length < 7
[Code].....
Is any other better way such as enbuild function Tostring() with some parameter?
I'm wondering how to evaluate an expression using the assert object. The idea is to check if a string is longer then what is minimally acceptable. For example, Assert.AreEqual(stringName.length, >5). I know this method doesn't work but the concept is what I'm trying to get across. Is there a way to test this?
Sub Sort() ReDim RollsCC(NumOfPlayers - 1) For N As Integer = 0 To (NumOfPlayers - 1)[code]....
Here I am creating a temp single dimensional array, merging my 2d array into it, and then attempting to sort it by Rolls(N,1), which is a integer 1-6, Everything seems to be working right with the exception of this.
RollsCC.Sort(RollsCC, 0, 1)
How would one specify a numeral sort based on the first character in the string? im aware that I am switching Rolls(n,1) and Rolls(n,0) information during the sort.
I have a List(of String()). I have written a custom comparer (implements IComparer(of string)) to do an alphanumeric sort.Is there a way to sort the List using a given index to determine which position in the String() to sort by? In other words one time I might sort by Index = 0 and another time by Index = 3. The length of all String() in the list is the same.For reference this question is similar to Sort List<String[]> except I am using VB.net and that question is hardwired to Index=0.
EDIT from OP's comments:I started simple with the non custom comparer but I am getting an error: expression does not produce a value. Not sure what I am doing wrong.Here is the code:
Public Shared Function SortListOfStringArray(ByVal ListOfStringArray As List(Of String()), ByVal SortByIndex As Integer) As List(Of String()) Return ListOfStringArray.Sort(Function(x, y) x(SortByIndex).CompareTo(y(SortByIndex))) End Function
I must convert string data from a CNC that is arithmetic expression to a number that I can use in a VB application that I wrote. The following is what I get out of the cnc. [18722*65536+19377]/67108864. I need to evaluate this expression in my VB ap. The format of the string is not always the same as what I have illustrated.
All I need is a simple way to sort the strings in the collection. I can't find anything online. Everybody is using lamda expressions which I don't think works for just a string collection?
Public Property FilterCollection As New ObservableCollection(Of String)
From d In FilterCollection Order By (Function(d) d)()
I'm coding my project that need to make string become number based from alphabet position example : "work" become "4231" because in "work" string "k" is the small alphabet than the others and "w" is the biggest now I wanna make 2 textbox, the first textbox is a place I put "work" then after I press a button the second textbox show a result "4231" is it possible to do ?
I already try to use array.sort but I don't know how to give a position after I sort it or maybe there is other way to sort it ?
data as string =webbrowser1.Document.Body.InnerHtml Dim chqSavgBalHdg As String = "Chequing / Savings" + vbtab+ "Balance" dim idx as integer = data.IndexOf(chqSavgBalHdg) ' got -1 ??? why while idx = data.IndexOf("Chequing / Savings Balance") ' use the physically typed tab key before Balance here ' got some +ve number in idx
I want to use "*" or "" as mathematical operators as such:
[code...]
this in one line without building a long, complex function? I would also like for this to be something that is already a part of the VB.NET structure and doesn't require an import.If such a solution does not exist how do I do it with a function or .dll import?
I am using the following code to load a file into my program, everything works fine. When I open a new file everything works fine unless I have this line inserted: Me.BindingSource4.Sort= "NewDateSold Desc"
That line works unless I open a new file while in the same instance of the program running. The I receive the following error: Sort string contains a property that is not in the IBindingList.
File Open Code Private Sub OpenToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenToolStripMenuItem.Click OpenFileDialog1.InitialDirectory = "c:" OpenFileDialog1.Filter = "Text Files (*.txt)|*.txt|CSV Files (*.csv)|*.csv" [Code] .....
I am really confused since everything works properly if I comment out the Me.BindingSource4.Sort = "NewDateSold Desc"
I have a dataGridView and a textbox on a form. I want to be able to search through the dataGridView and sort it compared to the string in the text box. Ex: I type "acv" in the text box and all strings containing "acv" are sorted to the top. I'm accomplishing this with a bunch of gymnastics involving datatable.select and some clearing and filling but it's ugly and slow.
I am new to VB.Net 2008. I have a tricky task to resolve, it is regarding extracting characters (values) from a long string, the extracted values from the text shall be summed up and sorted by keywords, reformatted and saved into a CSV file.
How would one code a button so upon cliking it items in listbox would sort either ascending or descending (depends on the button clicked). It mustn't be done with built-in Sort() but with a for loop for example. Tried to pseudo-code the solution to the problem, went as far as "store each listbox item in an array with a for loop".
I have a line like this 18N694 P321 117461, 50374 50MIL; XTAL_X1 P253 116711, 66524 39MIL; HR_ICH_HUB_CLK66_R P1567 109761, 68424 39MIL; P64H2_CLK66_R P2177 110161, 68424 39MIL; CPLD_NET2 P1151 4711, 90424 75MIL; V3_3_MGMT_PWR_RST# P3482 4711, 90024 100MIL;
From the above line I have to look the last word MIL. Then I need to arrange the line in ascending orders according to 30MIL,50MIL, 75MIL and 100MIL. Can I use IComparer? Because here I dont know how I can reach the word MIL and sort.
