I have a basic Table and I can add and save data, but when I try to delete, I het this error:Quote:Update requires a valid DeleteCommand when passed DataRow collection with deleted rows.
Public Class Form6
Private Sub ConverterBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ConverterBindingNavigatorSaveItem.Click
[code]......
I have a basic Table and I can add and save data, but when I try to delete, I het this error:
[Code]....
I have been trying my hand at this for some days now and just cant get anything to work. Below is the code im currently using to delete a row from a database table, the problem when trying to build the project line 5 is giving this error about the value con" Value of type String cannot be converted to 'System.Data.OleDb.OleDbConnection' "
Dim con As String = "Provider=Microsoft.Jet.OLEDB.4.0;" & "Data Source=Customers.mdb"
Dim cnn As New OleDb.OleDbConnection(con)
cnn.Open()
[CODE]...
I have also tried using this code below, but to no success. Im basically just looking for something rock soild that i can use to accomplish this task. Been stuck on this for quite a while now.
CustDetailsTableAdapter1.Connection.Open()
Me.CustDetailsTableAdapter1.Delete(txtDelCustN.Text, txtDelCustSname.Text, txtDelCustTel.Text, txtDelCustAddr.Text)
CustDetailsTableAdapter1.Connection.Close()
I am having problem deleting my data on click event. Here is my
Dim inc As Integer
Dim cs As New SqlConnection("Data Source=ConnectSQLEXPRESS;Initial Catalog=ForumCrawl;Integrated Security=True")
[Code].....
at System.IO.__Error.WinIOError(Int32errorCode, String maybeFullPath) at
System.IO.File.Delete(String path)
at
[code]....
The program first creates a file and use it but then I want that file to be deleted and I'm using the command as follows[code]...
View 1 Repliesi am using following code in my app but getting error the code is
Dim conn1 As SqlCeConnection = New SqlCeConnection("Data Source=|DataDirectory|exim.swf;Password=Pkyadav123;Persist Security Info=True")
conn1.Open()
[Code]....
while deleting foto it showing the error like"The process cannot access the file because it is being used by another process."actually while am clicking on the data grid.. the photo showing on a picture box"how can i delete the fotoam using the code
If File.Exists(strPhotoPath) Then
File.Delete(strPhotoPath)
End If
In my app i have to copy and then delete image files from memory cards, the problem comes when some of the card inadvertantly have the "Lock" switch engaged turning them to read only.
When trying to delete these files i want to log the failure to delete but not show any UI messages until a time of my choosing.
Here is some sample code i am having trouble with.
Sub Main()
Try
System.IO.File.Delete("K:BYZTCSQ_0050.JPG")
[Code]...
This works fine when debuging i.e. it tries to delete the file and if not the error is caught and i can proccess it as nessecary, but when i build and run the app i get an error message telling me that the file cannot be deleted.
To test this code you will need a drive that can be physically set to read only (USB memory key, SD card) and try to delete a file on it while debuging and after a build.
Why would the same code run differently and how can i stop the excess error messages?
I am trying to delete a row if the program finds a duplicate entry.
View 3 RepliesI am getting the attached error while updating or deleting the records. [code]...
View 9 RepliesI am concatinating a couple of text files and then deleting the individual files. (Not the output file)
The only problem is that I am getting a permission error "Exception from HRESULT: 0x800A0046 (CTL_E_PERMISSIONDENIED)" when I try to delete the files.
I can delete the files using the code below if I do not concatinate the files but as soon as I do I cannot delete them.
To concatinate:
Public Sub MeltText()
Dim SW As New IO.StreamWriter(OutPutFile)
Dim Files As String() = IO.Directory.GetFiles(StartDirectory, "*.txt")
Dim File As String
SW.WriteLine("Sw
I am having problem deleting my data on click event Private Sub btnDel_Click.
Here is my code:
Dim inc As Integer
Dim cs As New SqlConnection("Data Source=ConnectSQLEXPRESS;Initial Catalog=ForumCrawl;Integrated Security=True")
Dim dbSource As String
Dim da As SqlDataAdapter '("SELECT * FROM search_result", cs)
[Code] .....
The error I am getting isThere is no row at position 0.
In the following Sub I'm sending an Attachment when the email has been sent I would like to delete the attachment but I get an system.IO.IOException Error. the file I'm trying to delete is being used by another process. How can I detect if the process has finished.
Private Sub SendMail()
Try
Dim cfiAttach As Net.Mail.Attachment
Dim Attacmentfile As String = AttDir & fileName & ".pdf"
Dim SmtpServer As New SmtpClient()
[Code] ......
i've been all over the internet to solve this problem, but i've found no solution to my problem.my concept is this.Based on selected value within a combo box, the datagridview will populate with values from the database.
[Code]...
I need to delete some rows from csv file based on a column value. Here is my sample.csv file [code]In my vb.net winforom application, I have to read this file and need to delete the rows related to 06/06/10 date column values then write the remaining rows into new.csv file. So far my program works on reading whole data present in the file.[code]
View 2 RepliesPlease see Image : [URL] am not supposed to paste external links, but just wanted to share the concept clearly. In the picture, I have department and listbox. Now, I have a Table name - "Company_Data" with the Columns:
Name|Age|Department|Salary
All I want is when I select the department in the drop down, the list should show all the names under the department. Also, when I select the name in the list and click delete. It should delete the complete record from the Table.
I have a dataset bound to a DGV thus:
Me.BudgetTypesTableAdapter.Fill(Me.RestelDataSet.BudgetTypes)
When I save new data I use :
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
Me.Validate()
[Code].....
should work as the Rowstate is checked to see what should happen ie (UPDATE, MODIFY OR DELETE).
[code]Index was out of range. Must be non-negative and less than the size of the collection.Parameter name: index
View 2 RepliesDim Conx As String
Dim DBx As String
Conx = "Provider=Microsoft.ACE.OLEDB.12.0; "
[Code]....
I have created a service that will update a table. <foxpro to mysql>Before the update it will delete all the data in a table<mysql> and then insert the record from the dataset<from foxpro> one by one.I have more than 5000 records and it is very time consuming, now I would like to ask for some idea if there is a way in vb.net to only insert the data that have been recently added to the table<in foxpro> to mysql table. Is it possible in vb.net to know what has been added in the table?
View 3 RepliesI am trying to delete a file(s) from a checked list box, when i click a button.
This is the code i have:
Dim item As IO.FileInfo
For Each item In CheckedListBox1.CheckedItems
Try
item.Delete()
Catch : End Try
Next item
But i get the error: Unable to cast object of type 'System.String' to type 'System.IO.FileInfo'.
i am working on my first database program. i believe that I am almost finished, except that i have a remove button like i would like to remove just a single selected row both from the datagridview and the actual database. this is just in case any information is entered wrong, and also to delete all the entries i put in just for testing purposes. the only problem im having is in updating the database after removing the row from the datagridview
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RButton1.Click
If Not DataGridView1.CurrentRow.IsNewRow Then
[code].....
I want to use dataset for sql server for adding/modifying/deleting data from sql server.
View 8 RepliesOK so I did a noob screw up, I was cleaning my application and delting unused data sources and unused data bindings. Now my form is blank! All code shows up for the form and all items still show in the mainFrm.Designer.VB
View 4 RepliesI start my project in vb.net backend is sql server i have completed my design now i start my coding but i am confused for connectivity code whether i used dataset or datable which is good? please give me best connection code for retriving,updating and deleting data from database..
View 1 RepliesThe Save Button doesn't work when I'm Deleting data..
Here's my code
Public Class Form1
Private Sub Table1BindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Table1BindingNavigatorSaveItem.Click
Me.Validate()
Me.Table1BindingSource.EndEdit()
[Code] .....
I have designed a form which contains a listview(to see the list records) and textboxes (used for adding or updating).an already save record into table using this
cmd.Connection = con
cmd.CommandText = "INSERT INTO student_info_tbl VALUES('" & txtUserId.Text & "','" & txtFirstName.Text & "','" & txtMiddleName.Text & "','" & txtLastName.Text _
[code].....
I have an Access table in which I connect through ODBC commands. I want to delete the 50% of data rows from it. Can anyone knows a string to write for doing that? ALARMLOG is my table. In MS SQL I tryed succesfully the following command :
[Code]...
I have spent several hours trying to delete a row and insert a row into an Access database using the OLEDBDataadapter and dataSets without any success. I don't get any errors it just doesn't update the datatable. Here is the last version of the code I have been trying to get to work. I have done a lot of searching and have
Data save
Private Sub SaveNumDte(ByVal ltoNum As String, ByVal ltoDate As Date)
Dim numTotal, x, MaxRows As Integer
[code].....