Get Accidental Deleting Records In Dataset Back?
Jun 19, 2011I'm having a problem with editing records in my DataSet. When adding a record to the database, I have a button that adds to the binding source
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I'm having a problem with editing records in my DataSet. When adding a record to the database, I have a button that adds to the binding source
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I am working on creating a program that records animal data (wombats) and stores it into a database, using vb.net. I am trying to add new records into a database but every time I click add, to execute that, there are duplicate records that gets added. How do i write the code so itonly adds it one time. I am using a data reader. Here is the
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I have a dBase file named PROBA, with two cells: "VNEV", "KNEV".I would like to see the records back-to-back in a Msgbox.
Imports System.Data
Imports System.Data.Odbc
Public Class FormCount1
Public Sub Recordszm() Handles MyBase.Load
'TODO: This line of code loads data into the 'DataSet1.PROBA' table. You can move, or remove it, as needed.
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How do I update records in a dataset with records in a transaction file?
View 3 RepliesI have created a form called new users, I have added my data source, draged over the objects I want from the dataset onto the form and all is well appart from the fact that I cant delete records.
To add them I simply click the add button, put in my info and then click the little disk button to update the dataset.This does not work for the delete button though, instead I get the following error
UPDATE REQUIRES A VALID DELETE COMMAND WHEN PASSED DATA ROW COLLECTION WITH DELETED ROWS.
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now i got a problem deleting records in the database
this is my code
Dim myConnection As SqlConnection
Dim myCommand As SqlCommand
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How to delete a selected row from Datagrid.I have provided a delete button. I tried the following code, but don't know where it is going wrong.
CODE:
I think, problem is in this line:
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Just wondering how to delete a selected record from a .dat file
I am new to programming so go easy
I can't figure out whats the best code for deleting a record from the database using combobox in VB.Net. the navigation of my combobox works fine.. when i click the dropdownlist of my combobox and select another name, the selected row on my grid also displays records the same as what is seen in my navigation boxes.... but the problem is when i am going to delete the records.
Here's a photo of my sample program :
The selected row on my grid is the records that i am going to delete.
Here is the photo after clicking the delete button. It delete the entire selected rows except the selected column Name, instead the first row column "Name" record is deleted and the second row column "Name" replace to it.
Here is the code for my delete button:
Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Me.TblCreditBindingSource.RemoveCurrent()
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I dont know what's the process of deleting should i do..
I have a file with information about people, and use the following code to show the contents ofthe file in a list box..
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I am getting the attached error while updating or deleting the records. [code]...
View 9 Repliesi have a listview with few records im able to delete the records from the listview but after deleting the record the listview is not getting refreshed [Code]
View 4 RepliesI am making a program that takes Access records and moves them into MySQL then checks to be sure everything is right and deletes the moved records. But, for some reason my delete command isnt working....
Here is the
Dim deleteCommandF As New OleDbCommand
Dim deleteCommandE As New OleDbCommand
Dim deleteCommandO As New OleDbCommand
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Running the program now to get the exact error message, shouldnt be more than 5 minutes and I'll post it.It says my paremeters are wrong? deleteCommandE.ExecuteNonQuery()
I read the other threads but i didn`t understood and none of the codes worked.I`m using VB 2005 and SQL Server 2005. I have 1 form with a DataGridView bounded to the table Produse and 3 texboxes and 1 Save button.
In the save button i`ve putted the code :
Using con As New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=H:ProjectsWindowsApplication1WindowsApplication1Database1.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True")
Try
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The code works fine , it saves the data i`ve enterd in the textboxes , but in order to view the changes in the table i need to restart my application to see the changes.
I have records in my datagridview (from database(ms sql server 2008 r2)). What i want to do is to insert the records selected by my datagridview checkboxcolumn and IF POSSIBLE automatically delete a record if the records to be inserted are equal to the records inside the database. (Hoping you got what I want to say.) For example. I have an A,B,C(child) that is under XXX(parent) in my database and I'll be inserting the A,B(child) again but it will be under YYY(parent). The old record in XXX will be deleted except C. I just want a possible DELETE STATEMENT These are what I've done so Far :
Insertion of record to database
Try
connectionString = "Data Source=***;"
sql_connection = New SqlConnection(connectionString)
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I seem to have a bit of a problem with the ICShartEditor text editor. It works fine for me in a Windows Forms app, except that if I have a button (or any other control) on the same form that defines a hotkey (like ALT-S for a Save button), then whenever I try to type 'S' in the text editor (or whatever the hotkey might be), then it triggers the hotkey rather than adding the character to the text.What appears to be happening under the hood is that all the ProcessMnemonic() methods for all controls of the form run, so those methods kick in and handle the keypress, which I would think should only happen if a key like the ALT-key is pressed.
View 1 RepliesI have a form with textbox controls that are bound to the database. I have a bindingnavigator within the form, when i use the save & delete buttons on the bindingnavigator toolbar they seem to work but when i check my db nothing has changed. I have tried to work around this problem by updating the saveitem code using the code below.[code]
View 3 Repliesdisplaying it into Datagridview while inserting & deleting records in runtime..I insert records it into database using Access and delete but the datagridview not changes or update.my question is how can i update the datagridview while inserting records and deleting records.[code]
View 7 RepliesI used the wizard to create a datagridview and then binded a grid to an access table.Data show up fine..But I can't dete records via the bindingnavigator.Hit the delete button then hit the save button ?Data does not get updated in the backend database.My properties are set to true for adding and deleting.
View 1 RepliesI am deleting a row from a row that is currently selected on a datagridview.I am using a Typed dataset and my datagridview is bounded to a binding source.However, I think my technique is not the best, even though it works.
Dim drDelete() As DataRow
' Get the value of the PK from the currently selected row
Dim drv As DataRowView = CType(bsAddressBook.Current, DataRowView)
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I am having some issues in attempting to display a recordset from my webservice. Currently my application involves a client feeding their values into my webservice.The webservice will then call a vb.net database class, which executes a SQL stored procedure, returns a recordset to the database class, and the class will pass the recordset back to the webservice, which will display it to the client in xml.
The problem I am having passing the recordset from the database class back to the webservice in a format that can be sent back to the client. I can't seem to convert the recordset to string format. Would it be better to have the record returned in XML format?
private
void bindingNavigatorDeleteItem_Click(object
sender, EventArgs e)
{
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code does not make chages to database when i reopen the application the records exists as earlier.
i am using VB2008 and i need to work out how to search a database. it probably will be very easy but i cant understand it and havent been able to find any tutorials that are for VB 2008, only for other things that wont work, mainly because i dont understand much of what is been written/said/coded.
But the search button (btnsearch) isnt doing anything when the code is tested.
Public Class Form4
Inherits System.Windows.Forms.Form
Dim Con As New OleDb.OleDbConnection
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I want to use dataset for sql server for adding/modifying/deleting data from sql server.
View 8 RepliesI recieve a failry complex XML from a web service (30+ tables; with nesting). I need to be able to look a this data; make mods and then pass it back (still well formed per xsd) to the web site. I am able to parse it both natively in XML and by putting it into a dataset. I am more comfortable working in a dataset so thought the best approach for me would be to take the XML to a dataset dsOrder.ReadXml(XMLreader) (also tried with inferschema switch) work with it as required; then using _newXML_str = dsOrder.GetXml
put the dataseet back into xml. This almost works, but the XML while well formed does not adhere to the schema. In particular, it appears that all the simple types for a table are put ahead of the complex types (even thoguh the schema wants some of these items intermixed), so when sent back to the web site, it complains about the order of the tags.
is there a way to get the xml from dataset command to form an xml that will ahdere to the schema? I tried using the available xsd to influence this process but it either doesn't work or I did not know how to apply it properly. If someone has a suggestion for this application I would appreciate comments and any detailed samples that come to hand. I am working in vss 2008; framework 2.0; and use vb.net.
I loaded a dataset (just one table) from the database. Then I modified f.e. the rows from 5 to the end and add 4 new rows. Now, I would like to write back the dataset into the database.
View 2 RepliesI've made a dataset using the dataset designer, and I'm trying to add a column to reflect changes made to the database (added a column, nothing fancy). Is there a way to 'refresh' the dataset schema from the datasource without deleting my adapter (and all the methods and queries I've created)?
View 2 RepliesIn my project,I used the wizard in VB.NET2008 Express to connect to my database. I have a data connector, adapter, and dataset controls on my form. I have been able to load the information into the dataset, and used the datCustomers.Customers.AddCustomersRow to add a new row to the dataset with information.
I now want to save the updated dataset to the database. I have tried using the adapterCustomers.Update(datCustomers) command to no avail. how to save the dataset to the database?
I'm following a tutorial using serialization/saving records.I can make records, display them ok in a datgridview and then save them ok using serialization. Then I can reopen the programme and reload the dataset from the deserialised file, and show the records ok [code]....
View 1 RepliesI'm following a tutorial using serialization/saving records. I can make records, display them ok in a datgridview and then save them ok using serialization. Then I can reopen the programme and reload the dataset from the deserialised file, and show the records ok - but I cannot add any more records to the datagridview.
Here is my code:
Imports System.IO
Imports System.Runtime.Serialization
Imports System.Runtime.Serialization.Formatters.Binary
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