I m using datagrid my cloumns are coming dynamically.Here is the attached view I m getting. For first column I get value from database. now for each cloumn I have to get values for which i have to traverse multiple records from database I want each cloumn should be populated in one shot.
View 3 RepliesI have a 2d array of data that I have performed the sum of the individual column of the 2d array. I want to send the results to a datagridview and also will like to have the result as a 1d or 2d array.
Below is sample of my code
Dim Array1(,) as double
Array1(0, 0) = 5
Array1(0, 1) = 7
[code].....
Is there a simple way to take every value in column(columnx) and add it to an array. I need to do this without using toolbox 'objects'.Here's what I've tried
dim array1()
For x = 1 To (Val(totalct))
Dim getname As String = "SELECT Value FROM table WHERE id='" + x.tostring + "'"
[code]....
datagridview column to array
View 8 Replies* I posted this in VB forum at first by accident instead of .Net* I am trying to create a console application that computes the row and column sum and prints the elements with the resulting sums for each row and column.
[Code]....
My column sum code is currently showing the row sums. I need the column sums to display in descending order. So i know it would require a sorted array, but i'm not sure how to go about doing that given i can't get the correct values to show up. So I would need it to display as "Column sums are 12, 20, 13, 24, 51. " and then the next line would be "Column indexes are 1, 3, 2, 4, 5."
if you could possibly point me to the right direction, that would be great. i have tried researching about this but found no solution.i have a 2d array which holds student name and 3 grades (eng, maths, science.)student array (24,3)Now, i would like to use the data which is held within the array to create averages.I need a total class average for: maths column, eng column, and science. I also need an overall average for all subjects.the code i have used, so far, brings some odd results.
studentarray(i,1) / count
studentarray(i,2) / count
studentarray(i,3) / count
[code].....
I am having some trouble with creating a simple function that converts a column of a datatable to an array (containing all numbers). Upon running it, it says "Index was outside the bounds of the array"; however, I couldn't understand why my function would create this problem.Also since I do not usually program using VB.Net, I am not sure if my function has other errors (like syntax errors).
View 2 RepliesBasically I'm trying to make a picturebox array so to speak and at the momment I'm currently linking each picturebox one by one with the corresponding array row/column. Seen below.
board(1, 1) = Me.Picturebox1
board(1, 2) = Me.Picturebox2
board(1, 3) = Me.Picturebox3
board(1, 4) = Me.Picturebox4
[code]....
Dim array1(9,2) as String
So basically, 10 rows and 3 columns and say I want to sort them by the values in the 3rd column.
Each row is essentially a record of data and must be kept together.
Now I know that you can't use the array.sort method but would I have to use a bubble sort or something for this?
What's a good way to manipulate the records while still keeping each row linked together somehow.
[Code] This is the coding i have used to a datagrid with textbox and combobox column. But for the first column i have to generate a unique name for each item and display in the first column of the data grid. I used array of string and tried to add that array value to the first column. But it is showing the error " Object reference not set to an instance of an object". how to add the unique name column to my datagrid.
View 4 Replies how to get an array of string from certain datagridviewcolumn,i try using this code,it doesn't work..
For Each row As DataGridViewRow In dgvPaketRow.Rows
If Not row.IsNewRow Then
Dim str() As String = New String() {row.Cells(0).Value}
Dim strRes = String.Join(", ", modCommon.str)
msgbox(strRes)
End If
I am having issues assinging values to a multi-dimensional array.
I am trying to build a 2 col, unlimited row array and populate with data from a data reader.
Dim tblArry(,) As String = {}
If reader.HasRows Then
While reader.Read()
[Code].....
When I use a Jagged Array I can get this to work. The Reader portion is workig just fine, but the coding is just not clean for this problem.
I'm working on a piece of software to read a comma separated text files with thousands of lines each line has around 32 word separated with a comma What my code does at the moment it reads the file line by line choose 11 words out of the 32 and outputs them into a new file. This is actually time consuming although i used threads and a progress bar my manager still not happy. So i was thinking if i can read the whole text file into a 2 dimensional array and then choose certain Colums to output on the new file that will make it work much faster. But i don't know how to read a whole colum from a 2 dimensional array. And let's say for example the array is gonna be like array(9500)(32) where the first argument representing the number of lines and the second represents the number of fields in each line. Is there any way to access it like this array(all lines)(15) I'm using vb.net 2008
View 2 RepliesI would like to retrieve a single column of about 800 rows in a table and save these values in an array so as to reference them later on. How can I do it? I tried:
[code]...
And it didn't work. The col1 is of type Int64 and so is the array prev_ob(). Please let me know how I can save it to an array.
When you have a single dim array, you get number of items in with simple Ubound(array). What is the most efficient way, to get number of items in each "column" in 2 dimensional array? My code (part):
.NET
Public Shared LoopStock()() As LoopStockDef
Public Structure LoopStockDef
Dim EntID As Int32
Dim LoopNo As Int16
Dim LoopType As String
Dim loopStPtX As Int32
[Code] .....
You can't Ubound multidimensional array as you can do with single dimensional array, as the second dimension can have different number of items in each column (DimX in the following table)
DimX | (1) | (2) | (3) | (4) | (5) |
-----------------------------------------------
DimY | | | | | |
(1) | 45 | 41 | 15 | 48 | 49 |
(2) | 35 | 26 | 98 | 15 | 31 |
(3) | 12 | 23 | 36 | 69 | |
(4) | 88 | | 26 | 28 | |
(5) | 74 | | 89 | | |
(6) | 36 | | 25 | | |
If you do
.NET
UBound(LoopStock, 2)
You get size of 2nd dimension, not number of items in the table for particular column. The best solution which comes to my mind is to define another array, a multidimensional counter, like
.NET
LoopStockDims() As Int16
And count every added item for each column. Is this the best way?
is it possible to fill up a 3 column ListView with an array.
View 5 RepliesI have a variable defined as Object(,) that was read in from excel. Without getting into a for/next, is there a simple way to read the c-th column or r-th rown from that array into a single variable?
View 2 RepliesI need to fill an array with whole column from database table, so i have used reader to read the values from that column, but can not figure out how to put them into array (code below doesn't work) [Code]
View 3 RepliesThis should be an easy one, looks like I got myself too confused.I get a table from a database, data ranges from varchar to int to Null values. Cheap and dirty way of converting this into a tab-delimited file that I already have is this (shrunken to preserve space, ugliness is kept on par with original):
da.Fill(dt)
' da - DataAdapter '
' dt - DataTable '
[code].....
How you might construct an array like the following: one column or entry would be a single integer, like 0, 1, 2, 3, 4... - i need this as an index of each one's position in the list the second would be 0 or 1, or true or false the third would itself be a list of integers 0,4,5,2,7,2,5,2...
So all together one entry would be {0; 0; 0,4,5,2,7,2,5,2} while the next might be {1; 0; 6,8,2,5,2,3}
I'm having a terrible time wrapping my head around this. It's mostly the third column which is actually a list in itself, that is giving me trouble
When I implement this code, the first time the button is activated, the values are placed in the array, and displyed in the list box. However if the user then selects more days and times to add to the list box, and activates the button again, the previously added entries in the array are erased, and only the new entries are displayed. How can I prevent previous entries from being erased? If the user wants to add values, they need to be added to the existing values.[code]
View 1 RepliesI want to create an in-memory object in VB.Net with multiple columns. What I am trying to do is create an index of some data. It will look like:
Row 1: 23 1
Row 2: 5 1
Row 3: 3 38
...
I know I can use a rectangular array to do this, but I want to be able to use indexOf opearations on this object.
See asteriks ***below for the problems: There is text in CStr(rdrPlayers("PlayerName")) and the textbox for loop is 15 so why the extra textbox's 6 thru 15 (1 to 15 then 6 - 15 under them 6 is visable others are out of panel display I shortened my code below
[Code]...
I've small project to do and now I'm stuck in middle. The program is to read the sequential text file and load it into a array/array of structure.The data information is like this (sample):
ID | Name | Type
1 | Cat | Animal
2 | Dog | Animal
[code]....
This is Just as sample data, my original data is more than this.I've open the DATA.txt file using FileStreamReader:
Dim FileStreamReader As StreamReader = New StreamREader(DATA.txt)
Read all the elements in the list and pass through ReadArrayString.Split the string using:
DataString.Split(New Char() {";"c})
Pass through
ReadArrayString(0)
ReadArrayString(1)
ReadArrayString(2)
Where index 0 is the ID, index 1 is the name, and index 2 is the Type Then I load the types in the dropdown combobox menu from the array with out duplication. Like this:
If TypeComboBox.FindString(ReadArrayString(2)) < 0 Then
TypeComboBox.Items.Add(ReadArrayString(2))
End If
Now When you click TypeComboBox it will show drop down menu with following list only.
Animal
Bird
Fish
After this, when Animal type is selected/clicked from combobox dropdown menu then it should only add the Id and Name of Animal type in the ListBox.Pseudocode may looks like this:
If Animal is selected/clicked from TypeComboBox then
Add Cat into listbox
Add Dog into listbox
[code]....
I've only figure out load items from only one column/array into combobox with out duplication.But can't figure out to compare the value of one column/array with another column/array and load it into listbox. I don't want to hardcode or write matching value inside the code. What I want is use the Array.
1] Is there a way to declare an array of mixed type [e.g.] column 1 as string, columns 2 through 5 as integer.
2] Is �Dim myArray( ,5 ) as type� a valid statement and if so will it result in a 5 column array of unspecified length?
Does anyone know how to read a single column array from bottom up, then back down, filled with decimal data, into one line seperated by comma's?
a = 0
Do Until a > decArray.Length - 1
test = decArray(a)
[code]....
How to add a checkbox column at first column of datagridview including column header?After adding, how to code to "check all" or "uncheck all"?
View 27 RepliesI have an array of people stored in a custom structure array... how can i copy this array to a temp array so that the temp array has all the same values as the original custom array?
View 4 RepliesI am trying to create the following program Store in a 1d array a set of 5 place names and in a 2d array the distances between the places. Ensure that the order of the places is the same in both arrays. When the names are places are input the distance between them is displayed. If they are not both in the table a suitable message is displayed
Dim town(1 To 5) As String
Dim Dist(1 To 5, 1 To 5) As Integer
Dim First As Integer
[CODE]......................
I think the best way forward is pass a parameter to the function findnumber.
I have a datagridview, and I want to get an array of rows, or rows indexes in which boolean column "Aktywny" is set to True.Obviously I can Do it using loop, but LINQ will be much faster for sure...
View 1 Replies