Conditional OrderBy - Number Of Columns User Can Sort By (Name, County, Active)
Jun 17, 2010
I've got a number of columns the user can sort by (Name, County, Active) and that's easy but messy. Looks something like this...
Select Case e.SortExpression
Case "Name"
If (isDescending) Then
[CODE]...
What I would LIKE to do, is something more ... like this
Private Function SortThatList(ByVal listOfStuff As List(Of Stuff), ByVal isDescending As Boolean, ByVal expression As Func(Of Stuff)) As List(Of Stuff)
If (isDescending) Then
[CODE]...
But it doesn't like the datatype (Of TKey) ... I've tired Func(Of stuff, boolean) (got something in c# that works nicely like that) but can't seem to get this one to do what I want.What's the magic syntax?
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May 23, 2011
Imagine the following scene: I have one table which have tree columns (ID, Number, Name).
A Select query result on this:
code:
Now, the user deletes the Number 3 and 4. So, now the Select query is going to be:
code:
And I want to have:
code:
How can I organize the column?
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Dec 10, 2009
I'm sure this has been asked here before but i couldn't find it, anyway my issue is i have filled a dgv using a LINQ query and i need to sort my results by 2 columns, i.e. type and cost so that it lists items by each type in creasing cost[code]...
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Sep 1, 2011
I currently have a datagridview that is built from a datatable So lets say we have 6 columns
A B C D E G
So the users will select there data from another program and paste into the the table. So lets assume that the data that is pasted is; (the column names are automatically put in)
A B C D E G
123 456 789 101 112 134
So the table will now look like following (I remove the first row because its the same as the column name)
A B C D E G
A B C D E G
123 456 789 101 112 134
My problem is that the users can rearrange thier tables(column index) so lets say user A has the table in this format
A B D E C G
123 456 101 112 789 134
So when they paste into the program, it will look like
A B C D E G
A B D E C G
123 456 101 112 789 134
So now "C" "D" "E" are incorrect and i need to swap those columns to be the same as the column name. I'm not sure how to attack this problem.My thoughts were to paste the data as is, than see what the first row in each column equals.so if it equals "A" assign it an index 0
B 1
C 2
This seems theres too many steps and will slow down the app...
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Nov 30, 2009
How do i sort a datagridview by several columns?
I want to sort the data in my DataGridView by the Title, Location and Reference, i have the following to sort the DGV by title, how can i include the two other columns in the sort?[code]...
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May 26, 2012
how would you sort out two columns so when you click them, it either sorts the listed items in Ascending/Descending order. I have named Name column to colName and Mobile column to colMobile
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Jun 24, 2011
How can I set up my WPF datagrid to sort on multiple columns similar to having two sortable columns, clicking on the header of the first column for a primary sort and then SHIFT clicking on the header of the second column for a secondary sort. I would like the multiple column sort to happen automatically when the user clicks on the header of the first column without having to SHIFT click on the second column header. Is there a way to do this entirely in the xaml? If not how can I do this in the code behind? Currently using VB.Net but a C# snippet is acceptable if you have one.
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Jul 19, 2011
How do I sort a DGV by multiple columns.
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Apr 16, 2012
Using Microsoft Visual Studio 2010 Ultimate - VB.Net
I'm writing an application where as many of other applications fulfill the requirements to be as an app , having it's statistics schema. Thus I made a form where I have a combox(of query category), a textbox(as searchfield), two datetimepickers(from and to) a listview and a button to fire the event with functions in it. I'm all set except for a minor issue I've encountered during my very first experiments with ListView control. Thus far I didn't know that VB users are stuck with that control's property options (whereas DataGridView has way too many), especially when it came to Column reordering/s. With the simple but not satisfying property Sort I couldn't find a proper solution to my issue.
when I click on of the columns in the listview to do a Number/Date/Text reordering (descending>ascending, via-verse). Not to forget to mention there a limited number of columns most likely 2-4 max.
The listview control has lvResults name and has for now columns inserted as "Country" and the other for subitems "Total Spent".
One e.g. of the values inserted to it is like this :
[Code].....
If pressed on Total Spent, should reorder from highest to the lowest number and via-versa. If pressed on Country should reorder from A to Z or via-versa.
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Mar 26, 2009
How do I sort a DGV by 2 columns? The DGV is not bound.
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Apr 16, 2009
I'm trying to set something up where the user can sort each column by clicking on the header... i've looked at some other examples and they seem pretty longwinded..so far i have the below...
VB
Private Sub resultsListView_ColumnClick(ByVal sender As Object, ByVal e As System.Windows.Forms.ColumnClickEventArgs) Handles resultsListView.ColumnClick
Dim oldsort As SortOrder
[code]....
which works fine... but only for the first column in the list view.Is there a way of specifying which column to sort based on which is clicked?
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Nov 29, 2010
I am new to vb.net, but i have good knowledge in Vb. I have a set of latitude and longitude, I need to find which county this set belongs to.
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Mar 20, 2011
I have several text boxes I need to validate. I am not understanding how to validate in Visual Basic 2008. So I deployed standard If Statements to handle bad data. I am having two problems.
Lets say the user entered wrong data, example, numbers; an error message is displayed. The text boxes cannot contain numbers, be left empty or contained characters, like !@#$. The problem is if the user enter text, and then entered a wrong data again the code does not work or display error message. How can I make the conditions so that they throw out error message even if the user had previously entered good data.
Another example: If the user enter good data in text box 1 and bad data in text box 2, the error message does not work.
Finally, how do I filter out characters to allow only text. Is there a way to use this code on multiple text boxes with out writing the entire code for each form control?
Here are the conditional statements.
Private Sub btnDataSubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDataSubmit.Click
If IsNumeric(txtDataEntry.Text) Then
lblErrorDisplay.Text = "Invalid Name!"
lblErrorDisplay.BackColor = Color.Red
[Code] .....
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Jul 25, 2011
I am trying to program my page in vb.net and asp.net so that when a user clicks on a column heading of a gridview, the data is sorted either in ascending or descending order. note that my data is coming from an SQL Server Express database. So far, I have done it so that the gridview can be sorted:
[Code]...
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Mar 23, 2012
I fought through a good amount of this and have gotten to the point where I can sort my arrays. What I need to do now is take the following code and sort the elements in descending order instead of ascending order. I don't know how to do that with the two arguments in the code:
Dim Cols(3) As Int16
Cols(0) = ColumnNumber + 1
Cols(1) = ColumnNumber + 2
Cols(2) = ColumnNumber + 3
[Code].....
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Jun 22, 2010
how do you sort the data by columns in a list view, for example, clicking the title of the column to sort by ascending order.
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Feb 4, 2011
I have a datagridview with its datasource binded to a List(Of T). Now i would like to sort on any of the columns.My code:
'Database access : items = List(BlogPost)
dgBlogPosts.DataSource = items
'My BlogPost Class
Public Class BlogPost
[Code]...
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Apr 5, 2012
is it possible to make something that can show the number of active applications? For example some code that say: Label1.Text = Number of running applications
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Sep 30, 2011
I should move in first position rows that begin with My_Number, but my Datagrid_comb is binding. So I have try this:
[Code]....
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Jan 27, 2011
How to sorting number in Listbox.
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Mar 22, 2012
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 ?
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Aug 18, 2010
IF cell phone is connected with PC over BlueTooth or Wireless and someone call that cell phone is it a possible to get caller person number from cell phone ?
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Oct 13, 2011
I have an DataGridWeiw as an result table for a little racing game.The grid is sorting itself everytime a new value is added in a "points" column using the following code. TableDG.Sort(Column2, System.ComponentModel.ListSortDirection.Descending)
And it works fine as long as "points" not exeed 9. eg: I want the datagrid to sort "10" or above as greater than 9. Not putting the "10" or above last in the list?How can i do that?
And is there any way to get rid of the "grey" marked first row?
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May 13, 2010
I have an ASP app that has a string array as such (there are much more than this):
7.5.0.17 Date: 05_03_10
7.5.0.18 Date: 05_03_10
7.5.0.19 Date: 05_04_10
[code]....
How do I go about sorting these string by version descending?
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Feb 20, 2011
i am trying to make a program with some numbers but idk how to put it in a bubble sort or write a bubble sort program here is the pseudo code for the program
Repeat
NoMoreSwaps ← True
For elemenr ← 0 to NumberOfItems -2[code]....
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Sep 8, 2010
Using the ListBox1 properties I tried to set the number of columns to 2 but could not do it.
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Feb 15, 2007
I would like to have all properties on a user from active directory. I find some property name as :
distinguishedName, SAMAccountName, sn, givenName, TelephoneNumber, mail
If you have a list of property? As each user has an ID in AD ?
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Sep 16, 2011
How do I specify that I want two columns on a checkboxlist?Below is my code:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If Not Page.IsPostBack Then
Dim di As New IO.DirectoryInfo("\bk00app0001Images")
Dim imageArray As IO.FileInfo() = di.GetFiles()
[code]....
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Jul 11, 2009
How do i get the number of columns in a sqlDataReader after executing sql statement ?
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Nov 9, 2009
I am attempting to create a game in Visual Studio 2008 that allows a user 10 attempts to guess a random number between 1 and 50. I have a label box in which I would like to display the remaining guesses as they decrement. The code so far appears below.
My two (I am sure very basic) questions are:
1. How would I pass the random integer generated through the Generate Integer function to the AmIRight button's click function? I was trying to decrement the counter each time the "Am I Right " button is pressed.
2. I would also like to evaluate each "guess" when the "Am I right button is pressed. Is it possible to nest a Select Case statement in a For Next Loop?
vb.net Option Explicit OnOption Strict OnOption Infer Off Public Class frmMain Private Sub btnExit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnExit.Click Me.Close() End Sub Private Sub txtGuess_Enter(ByVal sender As Object, ByVal e As System.EventArgs) Handles
[CODE]...
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