I'm fairly inexperienced with VB but have been trying to get "save" functionality out of a program I'm trying to write. Basically I have a Datagridview and I want to write each line from the grid into a .txt file. So what I've been trying to do is use Datagridview.Items and then variables as column / row indexes to move cell by cell left to right , writing each cells data to an array which also increments along the way. Then using WriteLine to write the array to the text file, zero'ing all the counters then starting all over again for the next row.... make sense?
I have created a class "student" and made an array which contains students.I would not only like to display the array in a datagridview, but the array should also be updated if the user makes changes to one of the students in the datagridview.
I succeeded in showing the array in the dgv: one way is using datasource prop, the other is doing is diagrammatically. However, i can't find out how to let the user edit the array by editing the dgv.
I have a table of 51 data points all numbers between 0 and 8000, i have stored the data in an array of ushors's, and on my form i have 10 numerical text boxes, So that the user can change the values in the table every 5th value. Using the value changed event the program then re-calculates the values in-between.
What i would like to do is show the table in a data gridview and allow the user to change the values in the array using the datagrid view, i know how to create a table but not how to link the table, so that it can change the values contained in the array.
Below is the code i am using to create the table:-
Option Strict On Public Class FrmViewTable Private BindingSource As New System.Windows.Forms.BindingSource 'Create a binding source for the tabel & dataview
how to go about getting data populated from a data grid view to an array of structures? I have a data grid view with 6 fields and 10 records that match elements in my array. I declared a list of songs based off of my structure Song.
[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.
I am working on a project which lets the user edit the students in a certain group using a datagrid. First I created a class called student and then I created a student-array. Displaying the students in a datagrid works fine. On form-load, I change the datagridview.datasource to the student-array. The datagrid has 20 rows by default (Public dbstudebt(0 To 19) As student). When I edit an existing student everything works fine but when I fill something in in an empty cell and press enter or tab to confirm and add a new student, it just clears the cell and nothing happens. So basically, editing existing studs in the datagrid works fine, making new student doesn't work at all as those cells are always cleared immediately.
read data from text file , 3 data types saved on the file, "location", "time","sighting" eed to extract all data from file and save on a 2d array and display on a datagrid view.ata sorted by ascending order of time.
I have an ArrayList that are separated by the pipe: colA | colB | colC | colD How can I bind that array into separate columns in a datagrid each with their own column header?
I am making a minor basket system which the user selects a number of products from a datagrid and it adds them to a basket using an array list (arrItemID).However on the ViewBasket form I want another datagrid however a query is formed listing the selected products. Though the datagrid seems to be empty (though the query when outputted to a text box is ideal. [code]
is there is any direct method or function in array class that can check if any given byte array is a subarray of other array?or should i loop through the each byte of main array to see if smaller array exists in that or not?
I have an assignment, and one of the requirements are to take a list of colors in an array and determine which letter, of the first letters of every color in the array, appears the most. (Essentially the mode, if converted to numerical values).
I have 2 arrays, tile(13,6) and loc1tile(13,6). Is there a way to make the values in loc1tile(13,6) equal to the corresponding values of tile(13,6)?Do I have to do it like this?
I have an array structure. and I'm done with it at some point. So I need to reset that array structure so I can start over! Is it possible to be done even with the sub array inside that structure array?
How can I add a filtered value into a new Column I create in DataGridView I am selecting a record from DataGridView1 and then looping through a datatable and retiving a value and I want to place that into the DataGridView1 in a column I have added. Right now I have the value going into to a textbox to make sure it works
I have a datagridview with transaction bindingsource I want the datagrid to show the sorted rows only not all the records when i enter a value into a textbox and click button sort.
how do I set a column of a datagrid so that it will only accept numbers? I have this column labeled "Grade" which of course, should not accept letters. I have done setting its Format property but it is not working.
I am trying to fill my datagridview but I got an error, I probably missed out something in my code. The dataset gets filled allright, only when it comes to the line:[code]
I have a working data grid on my form which pulls the courses the logged in user has signed up for from my database.
[Code]...
However, i can't figure out how to do this:When a new course is added to the database, i need the data grid to 'refresh' or 'update', which will mean that the new course will show up in the grid automatically.
Currently, users have to restart the application in order for the new course to appear in the data grid.
i have the following code in a textbox, which i retrieve from the net
This document had no style information. <ALEXA VER="0.9" URL="phazeddl.com/" HOME="0" AID="="> <SD TITLE="A" FLAGS="DMOZ" HOST="phazeddl.com"> <TITLE TEXT="PhazeDDL.com"/>
[Code]...
now i want to extract the rank and desc colums into a datagrid or listbox... but im not able to.. have seen some codes but also read xml files and not strings..
What I am trying to do basically is open an access query in a datagrid view and then be able to make changes to the datagrid and then save it back to the database.When I try to save:
