Im making scraper that should get values with regex to datagrid, but after getting first value, it doesnt update datagrid untill I click there or use ctrl + a to select all.
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I am attempting to refresh my datagridview but it does not seem to work. I have a separate frm where people insert data, and then I have a button on the main frm where people can click refresh once the other frm is closed. I click refresh and yet the data does not update in the datagridview
Private
Sub
KryptonButton3_Click_1(ByVal
sender As
[Code[.....
I have a datagrid, linked to a database. The user of my program can update the database, in one place, then i want my datagrid on another form to update automatically.
View 1 RepliesI have sub routine that is called via events like so.
Private Sub dgvQA_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles dgvQA.RowEnter
The problem is, is that it only fires correctly once.The e event variable keeps the same row even though I have now clicked on a new row.Meaning the next time an event occurs it has the same values as the previous event, when they should be different.How do I make it return the correct rows value when called the next time?The sub, depending on what row is select, creates a new form like the following
Dim NewForm As QA
NewForm = New QA
NewForm.UseParm = 1
NewForm.ShowDialog(Me)
Which is then worked with and closed, there after the sub continues normally.The sub also calls a different sub which may alter text fields within the datagrid view refreshing the data to reflect the work within the form that was created and used.
Currently using Microsoft Visual Basic 2005
Frame 2.0.50727 SP 2
My.Computer.FileSystem.RenameFile("New FolderBlank.txt", "New FolderBlank1.txt")
Try
Catch ex As Exception
[code]....
How would I change the following code so that if the process isnt found, it will pop up a msgbox
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so I am a little confused. I am trying to refresh my datagrid when I have either add, deleted or edit a row via another form. I have it so my main form shows the datagridview, I have bound my controls to the database and I see all rows, no problem. I also have it setup to double click a row and it brings it up in another form to edit that record. This works. but it doesn't refresh the datagrid when saved. I am trying to follow this thread, specifically this post Refresh Datagridview - Post 2 Here is how I am loading the datagridview in main form
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I have a form that uses a tab control. On the main tab is a DataGridView containing Customer information. If I double-click on a row in that DGV, I go to another tab in which I can either make changes or delete the record. Whatever I do, whether it be delete it or modify it, after clicking on the appropriate command button, focus goes back to the main tab. What I wish to do is have the changes be reflected on that DGV. If the record is deleted then I want the DGV to not have that record present. This DGV is bound to a BindingSource. What control/dataset to I need to "Refresh" in order for this to happen?
View 3 RepliesI need to "refresh" a DataGridView, bound to a database table, on a form within a TabControl The DataGridView is loaded correctly on strartup... But if the data in the DataBase change, How do I refresh it to reflect new records or updates?
this is what I am doing in code, after looking for some examples on the web:
MyTabBindingSource.EndEdit()
Me.MyTableAdapter.ClearBeforeFill = True
Me.MyTableAdapter.Fill(Me.MyDataSet.MyTable)
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but nothing changes at all...Do I need to refresh/repaint the TabControl as well as th Form containing it? or what else??
I have a datagridview control on my form which i have populated it with values from a dataset. Now i am using a button to delete these values from the database which is working perfectly for me but the problem now is anytime i delete the old value still shows in the datagrid which shouldn't be so so i wrote the code to refresh the grid after deleting but is still not working for me as i want.
I am using this code:
Me.UserAccountsDataGridView1.Refresh()
But onething is the value i deleted doesn't show when the form reloads again. but at run time it still has the old value in it again.
I am trying to refresh a datagridview from a second form to display newly written data. I have read the posts on this topic and can't figure mine out. My first form opens and you input data into text fields, etc. and then you need to select items from one table to copy and write to a new table. The datgridview on the first form shows the new table, and I have a new form that pops up to select the line items to add. Everything works perfectly except when I close the selection form after selecting lines, I would like the datgridview on the first form to refresh to show that the lines have been selected and displayed in the datagrid.
My data is loaded into the datagridview as so;
Public
Sub ShowVoucherLines()
cmd =
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I have a datagridview on a form that is bound to a table in a dataset from another class.I use a data adapter to .Fill a table in that dataset and the grid displays the data fine.Works fine.On my form I have a textbox the user can type in that will will pass a parameter to the storedprocedure used to fill this table. So on startup the textbox will have "%" in it. and then the user can type in "F%" and get everything that starts with an "F"
So when that textbox changes I launch an async refresh (.BeginInvoke) to do my refresh. The table gets populated with the reduced number of records (I check ds.table(0).rows.count and it is correct)
But the datagridview then starts throwing datagridview.dataerror events. "System.IndexOutofRangeException : Index # does not have a value".It looks like the dataset is getting filled correctly and not having any issues, but the datagrid is not liking this update. The index out of range error is so common that I'm not finding what I need through searches.
I'm using the following code to add a new record to a table in the database. However, the DataGridviewthat's binded to the DataTable, isn't getting refreshed /updated.[code]...
View 8 RepliesI'm facing a problem with a datagridview datasorce, or refreshing it. I'll try to explain what is happening. So I have a datagridview called dgvMaterials, I'm binding datasorce to the datagridview from one table in mySQL server. Here is the code:
Dim ds As New DataSet
Private Sub frmSettings_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[code].....
Dim myQuery = "UPDATE table1 SET data= CONCAT (data,'" & vbCrLf & "[ " & Date.Now() & " ]" & " " & "[" & getCN() & "]" & " " & txtTelenotes.Text & "[ item1 ]" & "') WHERE id='" & txtID.Text & "'"
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I have a DataGridView bound to a datatable which comes from an SQL Server database.When the user edits a record my update statement changes the field datetimemodified to reflect the last date and time the record was edited (as stored procedure). The new value for datetimemodified is not brought into my DataGridView.
1) How do I refresh a DataGridView bound to a DataTable? Is there any way to refresh or resync only records that have changed instead of the entire DataTable? (Note: my update statement is working fine. I'm only wondering about refreshing the DataGridView.)
2) Would it be better to change the value of DateTimeModified on the client side so that I can avoid a refresh (assuming that this is the only reason I need to refresh the data)?
I have a Data Grid View that is attached to a binding source. The binding source is pulling from an SQL database. The form I'm creating has a bunch of text boxes and then a record button which records the information back into the sql database. After the record button is pushed I want to have the datagridview pull the data again from the SQL database to pickup the new information. The BS has another BS for its data source, the other BS has another BS for its data source. That final BS has the DataSet for its data source....
BS3 --> BS2 --> BS1 --> DataSet...?
The .refresh for the datagridview does not pull in the information. I do have a filter applied to the binding source that the data gridview is pulling from.
the Datagridview is included in first tabpage. first tabpage is the search form and the second tabpage is the record detail view. user is switching and working between those two continuously.
The problem is that everytime user selects the tabpage1 the datagridview repaints itself. there is about 6000 rows in datagridview so it takes about 2-3 sec to paint itself. I know the delay is normal and can't avoid that. but it affects the tabpage selection. tabpage1 isn't selected completely until the Datagridview1 finishes it job. in this time the tabpage1 and tabpage2 gets combined and confused.
is there a way to put datagridview processing in backgroundworker or something that doesn't affect main UI ?
I have created in Visual Basic .net a new DataGridView in my form. I have used the wizard to show some fields of a table in my access database.I would like to add a refresh button and force the datagrid to load the data again from the database, but I'm not sure how to do that. I have tried several refresh method but it does not work.
View 1 RepliesBasically I have two forms - Form1 has a DataGrid on it (Infragistics) and in the double-click row event it creates an instance of the EditForm and passes along the UniqueId for editing. Once the user saves the changes (if they make changes) - I want the DataGrid on Form1 to refresh. Here is how I thought I could get this to work ... I create a public property called RefreshRequired as boolean. Before unloading the EditForm it sets this property to true. Then Unloads. This continues the code in Form1 (which showed the EditForm as modal) but RefreshRequired is still showing as False? Why isn't my EditForm able to set the property?
FORM 1
Private Sub grdList_DoubleClick(ByVal sender As Object, ByVal e As System.EventArgs) Handles grdList.DoubleClick
' TODO Ignore Double-Click Event when Right Mouse Button Triggers Event
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I am working on this microwave oven application and so far everything works well. I am wanting to add a pause button that pauses the timer. Is this possible? I've tried the code timer1.enabled = false but that doesn't work. Am I going about this wrong?
View 3 RepliesI am at college and am creating an app. however i have two main problems within my app. my app is a pizza app which will allow staff within a pizza shop to send the orders to the kitchen (this is just a listbox).but, the math doesnt work, the correct pricing isnt being displayed in the label for the orders for some reason. I have tried different ways of writing and placing my code but the result is always the same. also, i have five customers per table. if i select all the customers orders and click on send, only customer two's order will be sent. not any of the other customers, but if i just do customer one on its own, it works.
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well this is the code i have to save the data to the db, but it isnt giving any error nor the data is been saved
vb
Private Conn As OleDb.OleDbConnection
Private cmd As OleDb.OleDbCommand
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I have added a column to a table in SQL Server Express - the table is already included in my VB Express Dataset. However on clicking "Refresh" on the table in Database Exlorer I do not see the new column in the Database Explorer listings. I have looked around a bit for a solution to this but cannot find anything under Google.
View 10 RepliesI want to refresh a form that has a listbox which is databound to a source. Me.Refresh() doesn't do the job. I tried reloading the orginal sub thats also doesn't work.
View 14 RepliesMy.Computer.FileSystem.RenameFile("", "")
Try
Catch ex As FileNotFoundException
MessageBox.Show("Not Found")
End Try
I want it to display an error and NOT crash when file isnt found.
I have a DataGridView on FormA and a DataGridView on FormB. The DataGridView on FormA is initially populated from a file. This same file is being reused when data is saved from either form.
What works: I show FormB by clicking a button (control) located on FormA and all of the data that is in FormA's DataGridView is read into the one on FormB from the file. I can make changes to the DataGridView on FormB and save back to the file but when I close FormB, the data on FormA remains the same as originally read in.
What is needed: If I make changes on FormB, what is the best way to refresh the DataGridView on FormA when I return to it? FormB is closed at this point. I tried to include a call (as the last statement) in the button control on FormA to read the data from the file again as this works initially but nothing happens.
Note: the FormA's DataGridView is also in a Tab control if this makes any difference to try and get it to refresh.
1) I created and attached a database to my VB application.
2) I edited the Dataset within the Designer to add a new Insert query to one table. Everything worked great.
3) Externally I modified the structure of the database, changing one field from date to string. Went back to the application and everything was fine. It seemed to update and be aware of the change.
4) Again externally I added a new field to the table. I went back to VB and adjusted the query to include the new variable.
5) Now, VB keeps telling me the first variable I changed is a Date variable and not a string, and I can't seem to convince it otherwise.
My changes should have been refreshed and changed automatically by VB. I did a lot of similar changes and additions earlier, and they all worked. Is there any way of forcing a refresh, or rebuilding the definitions. I did try to go into the designer.vb file and manually change the "date" to "string" in the references to my field (I adjusted all the fields so they matched other string variables).
I don't want to have to rebuild the whole application from the ground up again. (this is the third time something like this has happened to me).
I load up a datatable - bind it to a binding source and a binding navigator - and lots of textboxes on the screen bound to that as well.When I get a concurrency violation - another user has already changed my vendor, let's say - what is the best method to go about refreshing the datatable with current data from the DB?
View 10 RepliesI have a VB 2008 Forms application which does Powerpoint automation -- I am opening owerpoint in a minimized window from within my app and am trying to periodically put update messages in a textbox on my main form while the automation is running (it takes a few minutes to complete), but my form window does not want to show these messages until the powerpoint operations are finished. It seems as if I need to force a window refresh or something on my windows form, but I'm unclear how to do that. Below is some code that I'm using that illustrates what I'm trying to do. When I run it, "Step One / Step Two / Step Three" do not show up on my textbox until after the Powerpoint automations are over.
View 3 Replies
