VS 2008 Viewing The Contents Of An Access File In A DataGridView Control , Programmatically?
Jul 9, 2011
I am trying to move from the old ADO to the new ADO .NET . However , no matter how many tutorials I read over the internet , I still can't find a way to do something which , as I believe , has to be very simple I tried to mimic the way the graphic control did but I am missing some things ... I noticed that , in the graphic way , the wizard created 4 controls :- a DataGridView control- a DataSet control- a BindingSource control- a TableAdapter controlI recreated all of them and filled their correspondent properties , but yet I can't make it work . I think what I am missing is the connection itself . I looked on the internet and I think a connection can be made and opened like this :
Dim DataBaseConnectionMY As New OleDb.OleDbConnection
DataBaseConnectionMY.ConnectionString = "PROVIDER=Microsoft.Jet.OLEDB.4.0;Data Source = C:ProsoData.mdb"
[code].....
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May 27, 2012
Is it possible to take the last row added to the grid and enlarge it for viewing? Then when another row is added it enlarges and the previous goes back to normal size. When I say enlarge, almost like a magnify effect. Am I making sense?
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Apr 17, 2009
I've been attempting to tinker around with connecting a MS access database to a vb 2008 app. I've successfully connected and can access the data by using the add data sources tab. But what I'm trying to do is create a form that has a (1) single line text box, (1) button, and (1)multi line text box. I enter a name in the single line text box, click the button(search db), and when the info is found, it is displayed in the multi-line text box.
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Sep 13, 2011
I have two datagridview's both are databound. First one shows items for sale and the second stores all the items that were sold. I am trying too transfer selected rows from one to the other but no matter what I keep getting told "Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound."
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Nov 30, 2011
I am trying to display a custom control in a datagridview cell so that I can show nicely formatted information.
I am quite comfortable with the use of datagridview control accepting a list of objects as its datasource. I am also comfortable with populating the cell contents in the cellformatting event.
So I am planning to, instead of using a normal textbox control, button control and linkedtext control in datagridview cell, display my own custom control which is good one for displaying some custom data like, name, address, telephone, photo and others. It would be a nice improvement in my application.
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Aug 10, 2009
I want to programmatically set the focus to the last row (bottommost, its only one column wide) in the DataGridView control for Visual Basic. How can I do so?
So far, I have tried DGV.Rows.GetLastRow(DataGridViewElementStates.Selected)
without success, though I did not expect that to work. It absolutely must select that last cell. Otherwise, the application is nearly impossible to use!
Here is a screenshot of what I am making with this: [URL]..The "Paste Clipboard Contents" button only pastes into the selected cell, though I guess I could find a workaround.
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Jul 30, 2010
1. I have a DataGridView box, that is connected to a MySQL database via the 'Data Source'. I am trying to do the datagridview1.rows.add("info here"), however i receive an error i cannot do this programmatically. I DO know the code to post to MySQL via the "insert into" la la la.However, I was curious if I can do this via the datagridview a bit..easier/simpler, such as a "datagridview1.rows.add(stuff)" sorta thing.
2. I am attempting to make a custom control, and as with ANY control, they have their.. settings. Example, a textbox, or label, has so you can set the Text. and color, etc.Others, have it (such as datagridview) have the little icon on the control itself, where you click it, and it opens a small window with settings.
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Apr 6, 2009
I am using a webbrowser control, which is used for both internet and folder exploring. How can I determine when viewing files on the local directory, which file is selected?
I ran across something in my searches saying there was a property under the webbrowser.document called SelectedItem. But this must not be in 2008.
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Sep 1, 2010
I have DataGridView display Customers Details. The DataSource are from DataSet. After the user have created a new customer record and updated the SQL SERVER Table, Instread of refreshing the whole DataGridView I am trying to add new rows with data from the TEXTBOX into the DataGridView and it generated this error message: Rows cannot be programmatically added to DataGridView's row collection when the control is data-bound This is the coding which the error was generated from:
Private Sub FRefreshDataGridViewRow()
'use strmode to determine New or Edit existing record
Dim strCell1 As String = CType(Me.txtCustId.Text, String)
Dim strCell2 As String = CType(Me.txtCompName.Text, String)
[code].....
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Mar 19, 2010
how to copy the contents of an existing Access file stored in a location (for e.g. C:/test.mdb) to a different location (for e.g. C:/Myfolder/testcp.mdb)
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Jun 22, 2010
I have tried many methods to save my datagridview contents to a file but with no luck does anybody have a good method for xml to datagridview, datagridview to Xml,or any other methods to read/write a datagridview.
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May 5, 2010
How to programmatically change foreground color and make bold text in individual cell location on DataGridView control (Visual Basic)?
I use "dgMatrix.Rows(r).Cells(c).Value = x" to assign individual numeric values to individual cells in a DataGridView control. My question; is there a similar way to change foreground color and make bold the text in this cell, by specifying the individual row/column cell location?
For example; for cell (row 3, col 5) in the DataGridView make text in cell say red and bold or blue and bold so as to highlight and distinguish individual cell contents. As needed, I will also need to reset these properties (foreground back to automatic/black and font from bold back to regular); the reset could be done globally to the whole DataGridView as opposed to indiviaually by cell.
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May 19, 2012
I've got 1 form that has the user enter 7 fields of data.When they click my "Save" button those values are stored in a .DAT file.On that first form there is a button that brings up a second form with a listview control.I have all the headers set up but can't figure out how to populate the listview control with the contents of the .DAT file.A friend of mine told me I may need a Do while loop but this is my first time doing this and I am so lost. I don't even know where that loop would go and whether or not I need extra variable for it.
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Sep 15, 2011
at the textbox.textchanged event im looping trough the rows in a datagridview
For Each row As DataGridViewRow In grd.Rows
Dim svalue As String = row.Cells(0).Value.ToString
If Microsoft.VisualBasic.Left(svalue, txtSearch.Text.Length) = txtSearch.Text Then
[code].....
now how to scroll to the selected row ?
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Feb 9, 2009
clearing cell contents within a DataGridView?I have a column with a list of names and would like to be able to make the whole column blank.I can currently achieve this (not the greatest) by clicking on individual cells and doing this ..
DataGridView1.CurrentCell.Value = " "
But rather than doing this I would like to be able to do every cell in the column, all at once. I'll put the code behind a button, so it can all be achieved by a single click.
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Jul 3, 2011
I'd like to go through all the items of a ListView control in order to ... well execute some code. I suppose I have to use the "For i=1 to ..." statement , but I am not familiar at all with this control. As I said , I'd like to check all of the items (the elements in the first column) and for each of them that has "Yes" on the third column , I would like to run the rest of the code .
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Mar 28, 2011
I am trying to view the results of a select query performed on a database.Here is my code so far:
querry1 = ("select * from [my table]")
Set acc = Wscript.Createobject("ADODB.connection")
acc.open ("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=c:mydb.accdb")
[code]....
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Jul 24, 2011
I am sorry to keep bothering you about this damn DataGridView control ... As you might have noticed I am having a hard time with the DataGridView control ... My latest problem has to do with updating the data base file (Access) through a DataGridView control .
Up to now I have managed to successfully edit an entry in the DataGridView control and moreover to successfully update the data base file itself .
The above form and its code work fine . The problem starts when I am trying to run the code of the Update button from another form .
You see , I have another form , through which I change the contents of some of the cells in the DataGridView control (back in Form1) . What I want next is to simply update the data base file itself , just like I was doing with the button in the first form , after I manually changed the cell in the DataGridView control .Thus , on the second form I have a button with this code :
Form1.Button1_Click(Nothing, Nothing) (of course the Click event is declared public)I have also tried :
Form1.Button1.PerformClick()
but still nothing ...Although Form2 successfully changes the cells back in Form1 , the data base file itself does not get updated ...If I manually press the Update button in Form1 I once again successfully update the data base file , but I want to do the whole thing by calling the Update button from Form2 .
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Feb 20, 2012
I have a website where I am filling form data through VB.Net 2010 through WebBrowser control.
I am able to set value for input:text, input:password, checkbox, select and able to submit form.
But I am not able to select input:file programmatically. I am also able to open "Choose a File" Dialog.
How can I send file name to select and press OK button from VB.Net Code?
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May 27, 2011
I am using Visual Basic 2010, I have Created A DataSet Called "GaryTPHDB. and from that, I have created A form Called "Booking Form" , And I have also created a "Daily Jobs Form" And on this DailyJobsForm there is a DataGridView1, and at the begining of the row I have inserted a button called "View Job" and when I click this Button I want to View the whole job in the Booking Form so a user can edit the booking.
And at the end of the DataGridView1 Row, I Have inserted Another Button called "Allocate" There Is also a ComboBox. that a user can select a driver and when a driver is selected. I want the user to click the Allocate Button to update the dataset/Database with the selected driver. then remove the row from the DataGridView1. the DataGridView1 should be refreshed each time a row is remove.
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Feb 6, 2009
How do I make my app identify the forum type that the webbrowser control is currently viewing? I want to make the app determine weather it's a vBulletin board or a phpBB board, but I don't know how to do it..
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May 19, 2009
I have a datagridview and I'd like to write it to a file in the same type of row and column format it's currently in.My first idea for doing this is to get the maximum number of characters in each column so i know how wide each column has to be formatted. Then loop through each row and write out each row while using the max characters in each column and the current cells content length to do the math to get the formatted columns to line up. Like the example below, except i'd have a lot more in it.
writer.WriteLine("{0,0}{1," & lb(2).Length + 50 - lb(1).Length & "}", lb(1), lb(2))
This takes label(1) and label(2) and writes them so no mater the length of either (to an extent) then will always be right hand aligned in two columns.
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Jun 15, 2009
Is there a way to programmatically send information from a text box into specific columns in a DataGridView? I tried
vb.net
Column1.Text = TextBox1.Text
and it obviously does not work.
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Dec 6, 2011
having lot of problems playing a video on a form.Is there a better control for viewing videos than windows media player? For video resource files, what should the build action be? Will a form which has a 32-bit windows media player control on it work on a 64-bit computer?For some reason, the following code does not work:
If System.Diagnostics.Debugger.IsAttached() Then
strVidFilePath = System.IO.Path.GetFullPath(Application.StartupPath & "....
esources")[code].....
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Mar 22, 2009
What i am trying to do is open a save file dialog and write to a .txt firl the contents of my listview. so far:
[Code]...
i have this, but i'm not to sure how to write to the .txt file i know i need to use a for each to loop the contents of the list view
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May 8, 2009
I am writing a text editor application which uses an advanced third party text editor. This editor allows the user to set Bookmarks and use Outlining, just like the editor in Visual Studio. The output of my application is a ".script" file, which is basically just a text file. This file is read later by a game, and I can therefore not change anything to the layout of the file. It must be a simple text file.
When the user saves any document, I would like my application to also store the Bookmarks in that document, and the state of any Outlining ranges (collapsed or expanded). The editor allows me to do this by using a special Save feature, which saves the contents of the editor (the text), along with its properties, bookmarks, outline ranges, etc to an XML file. I can also load this XML file back. Now there is one obvious problem: my application should still output its documents as ".script" files, which are just normal text files as said above. Therefore, I cannot use the XML files that also hold the properties/bookmarks etc directly, since the game cannot read those!
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Mar 19, 2010
i have my program and it does what i need it to do but when i export the contents of the text file it does not show the new line characters. it displays it in the text file like this all on one line
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Sep 1, 2011
Can anyone tell me why "Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound." I keep getting an error "Invalid Operation Exception was Unhandled" error. All I am attempting to do is allow the user to select products from a list(or a second datagridview) and have it added to the datagridview so they do not have to type in every cell since the other cells are not visible because they do not purtain to their needs. Plus they will be able to save all items at the same time.
[Code]...
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May 25, 2009
I'd like to use a dictionary to store the contents of an ini file. Now I know you can simply say
myArray.add("key1","value1")
myArray.add("key2","value2")
etc...
But Id like to store more information with a specific key, not just a single value, so id like to associate other values with key1 eg firstname,surname,address.
So by knowing the value of 'key1' I could retrieve the firstname, surname or address associated with it.
I know in PERL, hash arrays work in this manner
eg
$hash{'key1}{'firstname'} = 'john';
$hash{'key1}{'surname'} = 'smith';
etc....
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Mar 10, 2010
i have 6 text boxes on a form the contents of which changes depending on a list box, i also have a button which will be used to create a log file, my question is how do i write the contents of the 6 textboxes to a new text file, and on separate lines in the txt file when the log button is pressed.
EDIT: preferably also needs to use the save file dialog so user can choose file name and location to save to.
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