I have code similar to the code below that works in other parts of my program. The reason the code below does not work is because the datatable is made up of data from two separate tables. Does anyone know how to make this work for multiple tables? Can I choose what fields to send back and where to send them? This is what fills my datagridview and it works fine.
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I've got a question below:load data from a table in database into a datagridview,make change in datagridview,and use update function to update change back to tablebut 13 changes, only 12 being update back to databaseonly the top row on the datagridview not being update??
For Each orow As DataGridViewRow In DataGridView1.Rows
orow.Cells(1).Value = TextBox1.Text
Next
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I have a Form with textboxes and a datagridview, the textboxes are to fill a new row in the datagridview but in stead it is updating the first row, the following is my code
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I load a DataGridView (VB.Net, VS2005) using the code below. The save logic works fine for manual edits oh the cells.However, I run some code that updates a Status column in every row then I call the same Save logic. All rows execpt the first row are updated! I am updating the Datasource (dvCerts)Ah.... I just tried changing the CurrentCell to 1,0 instead of 0,0 and now the data saves OK.
Load_...
daCerts.SelectCommand = New SqlCommand("SELECT * FROM PERP_ARB_Certificates", conPERP)
Dim cmdBldr As New SqlCommandBuilder(daCerts) ' used for grid save
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I have a datagridview bound to bindingsource. Whenever I delete a row, it is not updated to the underlying database table. I have to click elsewhere in the form to cause the dgv_rowValidated to fire where I have the following code in there to push changes to the database:
bs,EndEdit
Dim cb As New SqlCommandBuilder(myDataAdapter)
myDataAdapter.Update(myDataSet)
Normally, where do I place such code for updating when comes to deleting a row in datagridview? I noticed userDeletedRow event does not fired when I am deleting the last row in a one row datagridview.
I use two DataGridView“s to manage my database. DataGridView2 is filled with data from a table depending on what value you select in DataGridView1. I also have a search-function so I can search for specific values in DataGridView2. In pictures below I have searched for GroupID = 1 I can also copy all the values in the DataGridView2 into the database if I want to. The data often states what kind of values to use to use during a test of a machine. Sometimes I want to copy all the parameters for one machine and use on another machine. I have added a column that is used to write down notes about the data in the table. This is the only column not copied (except the primary key column) when I press copy. Its called Tableinfo
I can then search the active table for all rows where that column is empty. When I have changed the values or just confirmed that everything is alright I have a button called "Save" that fills that column with the string "Saved" so those rows doesn“t appear next time.
Here is where the problem occurs. When I press the save button I can see that the whole column is filled with the correct value. But when i press update the first row doesnt get updated. No matter how many rows there is in the DataGridView.
If I fill in all the rows manually it works. If I press the save button and then click in the cell of the first row where is says "Saved" and then update it gets updated correctly.
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I have a datagridview which I am populating of a database, scrollbars are disabled to allow for autoresize
I created a Scroll Event that causes me some issues:
1. I can scroll down only
2. To move from one row to the next I need to rotate the mouse-wheel up in between two rows - as if the row index isn't being updated
3. The procedure results in an error : Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
Public Sub grdScroll(ByVal sender As Object, ByVal e As ScrollEventArgs)
Dim RowIndex As Integer = grdAccountTypes.CurrentRow.Index + e.NewValue
' grdAccountTypes.CurrentRow.Index = grdAccountTypes.CurrentRow.Index + e.NewValue
grdAccountTypes(0, RowIndex).Selected = True
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I have a DataGridView control in my Windows Forms Application. I am adding rows to the grid using a background thread. I change the form's cursor to Waitcursor when the process starts and back to Default when it ends. This works well for the form, but not for the grid. When the form's cursor is changed back to default, the grid's cursor does not change, although the cursor over the rest of the form does.
I am updating the grid from a background thread? (The cursor is being changed from the UI thread directly). The background process raises an event, the handler checks the InvokeRequired property of the grid and decides if it needs to "Invoke" the method again from the main thread. So, in effect the actual UI update happens from the appropriate thread. I am not sure if this means that I am "using a background thread" or not.
I have a DataTable that's constantly being updated with new data from my database via a timer. That data is eventually reformatted and displayed in a DataGridView control.In an effort to prevent the DataGridView from completely refreshing from re-databinding (thus, clearing out selections, resetting scrollbars, defaulting sorting settings, and making the gridview flash as it reupdates), I'm simply removing old rows from the datagrid that no longer exist in the DataTable, and adding new rows to the datagrid that appear in the DataTable since the last update.
For the sake of simplicity, we'll call DataGridView the LEFT table, and DataTable the RIGHT table I'm looking for a way to go through both tables (LEFT and RIGHT), and remove old rows that are no longer in RIGHT and delete them from LEFT. And look for new items in RIGHT and add them to LEFT. Each table has a column called "RecID" containing a unique id for each entry that can be used for comparison. is there a way to do this all in one loop? What I'm looking for, in pseudo code:
<loop through everything>
if RecID does not exist in LEFT but exists in RIGHT
add new item to LEFT
if RecID does exist in LEFT but does not exist in RIGHT
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currently i had a program which working fine when its running in the solution explorer,but after published,problem comes.my datagridview cant show updated data while my database access already update...my datagridview only show existed data.could it be my datagrid problem?i get my data programmatically or is my INSERT command doesn't update the dataset?but in the solution explorer does show the dataset was updated. [code]
View 3 RepliesI have an Access database that is updated directly in Access. I'm trying to write a program to 'monitor' the database, and have a DataGridView control showing the contents. When the program is first started, it shows the current data in the DB fine, however, I've been unable to get it to refresh with any updated data from the mdb file. I have a timer running on 5 second intervals, and if i clear the dataset, the DataGridView refreshes to empty.
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I can edit the values in the dgv cells manually, add rows, delete rows all without problem and then update the database.My problem is in one form where I want to allow the user to filter the rows in the grid and then enter a value in a textbox and programmatically update all the cells in one column with that valueI can update the rows, and see the changes in the datagridview. When I try and update the database (using UpdateQuery on the underlying TableAdapter of the datagird) only some of thechanged rows are being updated I though it might be related
View 9 Repliespart of my code is in below
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I would expect to see the path.Path include the new record, however, I also notice that tempnextgen also include the new record. Can anyone help me out on this issue? Why the tempnextgen got updated as well, how to prevent this unexpected operation?
what's the best way to handle the updates to the database.For example i have one datagridview that's binded to a datatable (with two fields, id auto incremented and a varchar). The user can do all the operations Insert, Update, Delete.If i insert one row (only the text) and call the update method to save the changes to the database, and after that remove the same row and call the update method the adapter will throw a exception because it didn't update the datatable with the value of the id. So the best way to do this is always calling the fill method after every update?
View 22 Replieshere is part of the code i am working with at the moment:
Public Sub runbar(ByVal time As Integer)
sleep(2)
Dim i As Integer
i = 0
ProgressBar1.Maximum = time
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The problem is that when i click the button to run this, it does the runbar animation BEFORE it updates the text box. I have even tried putting a loop around the TextBox1.Text = obj to see if that would force it to work, but it did not. I would like to know if there is anyway to get the text to update before the runbar animation runs, just seams weird as i have the text editing first lol.
Last night 3 updates automatically installed from VS 2008 on my comp KB952241, KB971091 and KB973674 Today intellisence was not working for .net - I uninstalled the updates and everything is, once again, working fine I dont know what update did it ... But I was just wondering if anyone else has experienced this - I would rather not have the updates if they stuff things up.
Oh - and before anyone asks - I tried resetting the visual studio settings
I was wondering if there is a way to detect if Windows Updates are currently being installed.The reason is that I have written some software that sends my PC to hibernation if is idle for a specific amount of time, but I do not want this to happen if Windows is in the process of updating.
View 2 RepliesIs there any way to determine that a system has automatic updates enabled and has the little yellow security center icon indicating that updates are available? I'd like to drop a little service on one of my servers to monitor for that condition but can't find a good resource to get started.
View 12 RepliesI would like to ask if it is possible to do a multiple records editing by linqtosql method in one click event? What I've been trying to do is to edit all the names in the table which are having the same account number. I was able to edit but only one name has been edited and the rest are not
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Private Sub Button2_Click(------------) Handles Button2.Click
Dim accnt As String
accnt = Textbox1.Text
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Why is it these codes could only edit records in one datarow? Can you debug the codes to edit all records which are having the same account number after it is being query?if that is possible for you.
i am making a software =D (Does the Name matter ??)
Ohk so its gonna be my first try
my last soft was a success with 800+ downloads
so i want my program to check for updates everytime it opens or like when it clicks on a button
then it checks if there are updates then it will show the link to download the new exe file in a messsage box or in a textbox
i dont know anything about any of them XD
1). Whats a server? are they web based or locally on a pc?
2). I've made a program and want to make updates for it and put them on the web for download, Do i need a server to do this?
3). How do i make updates work on visual basic 2008, i mean ive made a program and i want to put it on the internet but i also want to bring out updates, apparently i can use visual basic to automatically download updates and install them. What do i need to do this? where can the updates be downloaded from on the internet? will a file share like rapidshare work?
I've updated my database...
And all the information goes in fine, and an Auto-Number is allocated.
Do I need to re-read the database to find & display this auto-number?
Where do I begin?
i can't find any wrong, if record exists then updated the record but only can insert the new record.
cannot updated the record.why?
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Okay so i made a small code that my application can check for updates onstart time. The problem is that it freeze up the application. How can i make it work faster.
Try
My.Computer.FileSystem.DeleteFile(My.Application.Info.DirectoryPath.ToString & "" &
"v.txt")
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Attached are my source files i found a source and messed about with it, itsa chat client and a server which listens to clients anyway the server sends out all the messages to each client, all i want to be able todo is have a little box in my client, which is there, but has no function, its meant to list all the users currently connected.
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I have the following records in the table student(see in fig 1). I am trying to update the Name of student whose Roll no =1. But Record is not updated in the database,
I need to implement a notification system software for each new verson, I am interested only inform the user of the presence of updates, not autoupdate software, how can I do?
View 15 RepliesIn order to multithread correctly, so that my UI gets updated and the background code functions correctly, I've been doing this:I have one sub that does the UI updating and checks for invocation: [code] However, I need to update the UI within the Class now. When I do that, my app is no longer responsive. I need to do all UI updating within the form class and all background code within my custom class.I just can't figure out how to determine at what part my class is at, to update the UI.The UI has a few labels and a picture box that needs updating. As it runs a new process, (about 8 in all) I need to update the picture box and labels with the appropriate information so that the user knows where the app is at.
View 7 Replies1. I have an array of windows handles (list of window handles) which are windows I want to minimize when I call the ShowWindow API. But when I call it it sometimes minimizes other windows which aren't the windows I had before. I'm guessing that window handles are changed when other windows are being opened, is there is any option to detect a window in other way? like identity or something like that?
2. I'm trying to change a window size by using the SetWindowPos, but the problem is that I'm using this API while I'm dragging a window which causes the window to change the size for a sec and then go back to the same size, how can I change the window size while I'm dragging it?
3. When a left mouse button is up I want to maximize a window, but when I'm using the ShowWindow API right after the left mose button is up it causes the window to maximize for a sec and then go back I could fix that adding a delay:[code...]
4. Another question, can anyone give me an example on how to put a window right behind other window? (I guess changing something in the Z order?) I already got the two windows handles.
Got a bit of a weird problem with a progress bar. I'm using a backgroundworker, which calls a "Process" function in a different class. The function goes about its business, and sends an update back to the form displaying the progress bar. What I'm finding is that its doing everything right, except update the progress and a label on the form. I've put breakpoints in to check the values of variables being sent to the form, and they're correct. I've also checked the value/maximum of the progress bar during the same break as I step through, and they're being set correctly.
they're just not displaying their updated status. I've tried refresh and application.doevents, to no avail. When the backgroundworker is complete, the values of the progress bar/label are as if I've never touched them! When the worker is complete, the Close button is enabled, so I know its finished. Anybody got any pointers/thoughts on this because I've been battling with this for a day and a half so far. I'm using the same technique as I've used elsewhere in the app to do similar backgroundworker progress updates, but this one refuses to work properly.