Data Saved In Database Disappears Everytime
May 12, 2009I have tried to test out the add delete and save function on a datagridview but the data that I added during testing would disappear after I made some changes to the code.
View 3 RepliesI have tried to test out the add delete and save function on a datagridview but the data that I added during testing would disappear after I made some changes to the code.
View 3 RepliesEverytiem I try to access data, like herejust to view it, or edit the table schema or something, the data resets
View 6 RepliesUsing VB 2008 Express, I've constructed a simple database type app for saving contacts. The table data I save at design time is always saved correctly but data entered at run time seems to get saved even after closing the app and VB. However, after restarting the computer, the newly entered data is usually gone. Why would this be? I've seen a few video tutorials on creating simple database apps and did everything they did and am getting the same problem. I thought it was a configuration problem so I actually re-installed Windows and VB 2008 Express (as well as 2010 Beta 2). I have noticed that in the database explorer, the .mdf file has a red x to the bottom right of the yellow database icon and when I click the + it seems to turn into a black plug. Is this normal?
View 4 RepliesI have datagridview in which 2 & 3 rd columns are Combo Box. I have saved the data to the database from datagridview. But while retrive if i assign datatgridview.datasource= mydatatable.It addes new coulm show the values. for my combobox columns it shows the value member values. If change the datagridview.autogeneratecolumns =false
View 4 RepliesI have form with combobox I have database contained 2 filed "ItemID" and "ItemName" The combobox fill her data from the database from field "ItemName" I do when I choose in the combobox any item and save, the data saved in database "ItemId" Not "ItemName" by define string put on it "itemId" when the user choose any item in combobox I need when I get the data that saved in database the combobox value="ItemName"
View 2 RepliesI'm using this code to update my access database.
[Code]...
If i run the program in debugmode and then do a update it will be saved to the database.(must stop and run again to see the update. How to se the update directly?)
My main problem is that if a build the program and run it outside VS then update never being saved. How can i solve this. I tried using "commit"(maybe totaly wrong) but that didnt work.
Program works but data is not saved in database and so it executes "Not According to Specification
View 2 RepliesI have the following code that connects to a server and expects data from it.Is it normal that working memory of my program increases every time I receive something from the server I connect to?The larger I make the network buffer, the more increase that is added to my working memory (in task manager)The data I receive is about 50 bytes. So I minimized that size of the buffer to 128.
View 1 RepliesI have a form with datagridview. I populate my datagrid with my dataset data.
Everything is going fine.
The only issue i found is.
if i lock the system and leave the form with datagridview containing data it it, and after some time (say 10 mins, when monitors goes to standby mode) if i unlock the system i see that the datagrid is empty. but a window with label has no effect its intact.
I have a VB.Net app that uses a MS Access 2003 DB along with OLEDB. My problem is that when I insert a record into a specific table, it sticks around for about 1 minute and then completely disappears. How in God's name does that happen? I'm using a DataGridView that is bound to a datasource. The Dataset that was created as a result of the Database I used from my connection string contains 4 datatables, one of which is used as the object of the code below
View 7 RepliesI am working in vb.net, visual studio 2008, with the crystal reports that comes with it. I have a push model: creating a dataset, putting data into it, making that a report source, and putting the report source onto (or into) a crystal reports viewer control (not neccessarily in that order). It works -- for the first page that's displayed.That report has two pages. If I click on the control to go to the 2nd page (where I have no data displayed yet), then on the control to come back to the first page, it displays with no data -- just the background text is there.I can see my dataset-loading code executing in the debugger, and as near as I can tell the database is no longer giving me back any data
View 1 RepliesWhen I add a new row to a datagridview, I am able to add data to a cell, but when I go to the row with the mouse the data disappears out of the cell. What code is needed to get the data to stay?
Private Sub BindingNavigatorAddNewItem_Click(sender As System.Object, e As System.EventArgs) Handles BindingNavigatorAddNewItem.Click
' When a new row is entered add Site id.
[code]....
What I am trying tot achieve is the following:User inputs data in one form that saves to the dataset table no problems. On an edit screen I want the current data saved to appear in this page within all the relevant fields but when saving I want this data to add to the dataset table as an additional line of data so the transaction records are kept.I want to add a new datarow regardless of it saving one change or all 7 changes that are possble.
e.g. Line 1 - user inputs 7 cells of data Line 2 - user amends 2 cells of data Line 3 - user amends 1 cell of data an so on. Unfortunately the terminology for certain items above may not be correct as I am still new to this programming and still on a massive learning curve.At the moment I do not have the code for what I am trying to achieve as I really dont know where to start with it.I am currently able to save the data and have it appear in the "edit" panel however only the cells changed are saved an it overwirtes the initial input.
[code]...
I have been searching the Forums for a solution to my problem, but I can't find anything that relates to my specific situation. All of the postings regarding not being able to save changes to a database have had to do with a datagridview. On forms that I do have a datagridview, my changes are saved.But I have a form with textboxes, comboboxes, and pictureboxes bound to a bindingsource,
Private Sub Back_Button_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Back_Button.Click
Try
[code].....
I have a very large Access database and the code which try to edit a record is below
[Code]....
so i added a service based database in my visual basic project. At this time the project only exists of logging in or registering, after which you'll log in.now all my SQL seems to be correct and working, the code is good, but when i register new user, it doesn't get stored in the database. but it does get stored...
i know sounds weird right, well what i mean is that apparently the data is getting stored somewhere because i check whether or not the username exists already. if it does i get a message box. Now the weird thing is that between builds and runs it remembers all the users i registered, but when i close the program and later re-open it, all the data is gone...
i used parameters to insert the date, everything from code below:
Private Sub btnLogin_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLogin.Click
[Code]...
I am using ASP.NET 2.0 with SQL Server 2005.
My page have a text box where TextMode="MultiLine"......see below
Now when I save this text in my database of course it does not save it with any HTML tags, and thus when i read that value from the database it comes back as 1 line such as....
But I want it to be dispayed just like the user typed it. Is there no out of box control that will do this for me rather than me using Ajax or jQuery?
I'm saving sometimes 1 entry into the database and sometimes 10 or more. I want to remove the rows from the DGV as their added to the database. There's no reason to keep them there. [code]...
View 5 RepliesI have this 4 tables. My problem is I have to save the treeNodes in the 4 tables. How can I determine that a specific treenode will be save in one specific table?
[Code]...
am currently having a problem saving any changes i make in my form here is my codes for each button: -Private Sub btnUpdateExistingRecord_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdateExistingRecord.Click 'This code makes sure that all fields in the members table are updated when the button is pressed. This is needed so 'the changes in the Members table are saved currectly in the database.
Dim CommandBuilder As New OleDb.OleDbCommandBuilder(DataAdapte
DataSet.Tables("Members").Rows(Include).Item(0) = txtMemberID.Text
DataSet.Tables("Members").Rows(Include).Item(1) = txtFirstName.Text[code]......
I'm trying to access a database which is presently saved in .cds format (which I believe is a TClientDataSet) from within my programme written in VB.Net. The reason being, is that the programme I am writing uses the same database as another programme. Both programmes will never being running at the same time, and it is a read-only operation so I could potentially duplicate the database and convert the database to an SQL-compatible format, but obviously this isn't a tidy solution.Is there anyway that I can directly read data from the .cds file with VB.Net? It seems like this would be something that is not too complex and wouldn't be too different from just reading a .csv file.
View 3 RepliesStudentId Marks obtain class
1001 76 NINE
1002 75 NINE
1003 55 NINE
1004 62 NINE
1005 38 EIGHT
1006 56 EIGHT
1007 31 EIGHT
1008 57 NINE
1009 48 EIGHT
1010 55 NINE
1011 49 NINE
1012 49 EIGHT
1013 27 NINE
1014 31 NINE
1015 48 NINE
1016 58 NINE
1017 31 NINE
1018 36 NINE
This is my database now I want to calculate rank from above this. I call this through procedure. If I select id 1001 then it will display the rank from the above data base. If I select 1007 then it must display rank to class eight.
I have a datagridview with contacts on a form with clients. The underlying table for contacts has a field for Contactnumber. This is a identity column so its new number is generated by SQL Server.
I add a row and when I move to the next record on the form, the form �nd the information in the datagrid is saved to the database. So far, so good. The problem is: when I move back and try to delete that newly made row I get an error about concurrency.
It's logical actually, the record is saved, but the dataset of the datagrid doesn't yet know what the new contactnumber is. Apparently it's not information that it gets back automatically from SQL Server.
How can I make the dataset know the new identity of the row that is saved to the database? I use a simple da.Update(dsVerwijderingen, Tabelnaam) to save the changes to the database.
My problem is probably ignorance as to how the DGV works, anyway, the problem.I have a bound datagridview which is used to collect user input. Data for 3 of the 7 fields is entered by looping through the rows and progmatically entering common data anfter a 'Save' Button is pressed:
For I = 0 To DG1.RowCount - 2
DG1.Rows(I).Cells(4).Value = TextBox1.Text 'Operator
DG1.Rows(I).Cells(5).Value = TextBox2.Text 'Date
DG1.Rows(I).Cells(6).Value = TextBox3.Text 'Time[code]....
At this point the DGV looks the way it should...All fields completed correctly and no un used ro except for the new row.After saving :
Me.ItemTableTableAdapter.Update(Me.StockMoveDataSet.ItemTable)
The 'Operator', 'Date', and 'Time' are not saved to the database for the first row only
I am using ASP.NET 2.0 and SQL Server 2005. I am saving a value/string in the database <P>Test 1</P><P>Test2</P>
Now i want to decode/remove the html tags and display it properly to the user such as...
[Code]...
I am setting the value to a Text box where the TEXTMODE property of the text box is set to MULITILINE for scroll. Setting it to a normal Label work but not for my text box.......
If you have a saved string or value in your database. How can you open this that it is selected in a treeview? i mean when you click for example a commandbutton (Open my data)
View 1 Repliescreating an application using VB 2010 Express. i found data I entered into table were not saved (after I clicked"Save" button)successfully into Microsoft access file which I had added successfully as datasource.These are the codes:
Private
Sub
SaveToolStripButton_Click(ByVal
[code]....
I'm trying to figure out/learn how to overwrite previously saved data. Right now when I save data to my excel form and then reopen it, to edit, a duplicate row with the edited data is shown along with the previously saved data as well.
View 7 RepliesI am creating a simple button based rpg and was wondering if someone could help me with 3 things how to hold information within the game until the player save's the game, Saving the game, and Loading the game.I want the saved games to be saved onto a encryted file like .db or .dat file..
View 3 RepliesDoes any one know how to clear all saved autofill data of browser in Asp.Net
View 2 Replies