Update Statement Is Not Working On Database Software With .mdb
Mar 11, 2010
my simple update statement is not working on my database software with .mdbCompanyDa.Update(CompanyDs, "DisplaycenterData")it works but only in cache, when i restart my application the record is not updated.i solved my problem with some informal steps. i m attaching vb projects zip file, plz open coding for update button and Help me with simple coding.yes one important thing i need help and suggestion for is that in that project and forms are working nice, but with form i m facing problems, specially i cant update new added data/record, it returns error enven i follwed very same coding patterns and formate as i used in other forms in this project, i tried again and again but faild to solve the problem, i also changed table name and fields in database table but it still not working, and coding of other forms is working nice and 's update coding is not working.(update coding for company and book entry form is working and it is not working with purchase5 form, plz help to solve the problem)plz help me with simple coding and removing above mentioned error.to move between all three forms plz click related button at bottom of each form.
I currently have a problem attepting to update a record within my database. I have a webpage that displays in text boxes a users details, these details are taken from the session upon login. The aim is to update the details when the user overwrites the current text in the text boxes.I have a function that runs when the user clicks the 'Save Details' button and it appears to work, as i have tested for number of rows affected and it outputs 1. However,when checking the database, the record has not been updated and I am unsure as to why.I've have checked the SQL statement that is being processed by displaying it as a label and it looks as so:
UPDATE [users] SET [email] = @email, [firstname] = @firstname,
Private Sub BooksBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BooksBindingNavigatorSaveItem.Click
I have a form with comboboxes, if the user doesnt select a value in the box I want a null to be sent to the database. The insert works fine, i look at the record in the db and see the null. The update doesnt work. gives me a n "Update statement conflicted with foreign key constaint....."
Public Sub Update() TableAdapterCreate().Update(ID1, ID2, CType(cbox1.SelectedValue, Integer), CType(cbox2.SelectedValue, Integer), CType(cbox3.SelectedValue, Integer), CType(cbox4.SelectedValue, Integer),
[CODE]...
As I step through the selected value of the cbox 5 is shown as nothing (which it should be because the user didnt select a value for this combobox). I assume this needs to be a null instead of nothing to get written to the database. the combox boxes need to match a primary key in another table so sending a 0 would also result in the forieign key error since the related table does not have a 0 ID field.
MVC3 VB.NET application. I have the below section of code in a function. This code is supposed to only fire if the handout1 is not nothing. But for some reason it is going into the then block when the handout1 is nothing in the database... I have tried a hundred different ways of checking but it is still trying to run that line of code even when there is nothing to assign to it....
I am creating a feature in my application that will allow a logged in user to add additional users to be logged in. The usernames and passwords are kept in a single database created in Access 2007. The table has 3 columns: ID, UserName, and Password. I am trying to insert user-inputted data through a TableAdapter function in a DataSet. It has worked once but for some reason it stopped working, and I can't figure out why.
Calling the TableAdapter function... Me.UsersTableAdapter1.AddUser(Me.txtID.Text, Me.txtUsername.Text, Me.txtPassword.Text)
[Code].....
Visual Studio isn't throwing any errors my way or anything so I am not sure what's going on here. The fact that the code worked once but isn't working now is also confusing, and I don't recall making any changes related to this feature since it worked that one time.
Conversion failed when converting the varchar value '17, 18' to data type int. Which is the same error message I get when I run my application. So I guess somewhere along the line, when passing those values in the parameterized query, they are being passed as string literals with quotes around them, instead of integer values separated by commas. How do I add the string that I obtain as the argument for this subprocedure into my sql query's parameter such that they do not get passed as string literals with quotation marks around them?
I have form1 and form2. On form 2 i have 2 combo boxes where the user is asked to make selections. once back on form1 i try to use those selections as part of an if statement but although i should be triggring them it does not. I cannot figure this out. I have set up test variables and msgboxes along the way to test this.
The code excecutes. I have double checked the variables on form 2. They just do not trigger a response that will enter the if statements even though it looks like they should. I have double checked that test1 and test 2 are grabbing the variables from form 2
test1 is "Male" test2 is "10 - 19"
When the code excecutes i never get to the msgbox("Age") line of code. I have also tried taking the spaces out of the strings with no luck as well.
I made a smallprogramm. Each Q is at the top of the Form.vb right under the Public Class.Each A is declared in the Private Sub where the given A is matched with the stored Q. Each A looks like this: DIM Answer1 As String = "Answer" and so on. I would like to use just one DIM statement for all the answers.
I need some help working with an OleDbCommand Statement existing statement
OleDb.OleDbCommand("Select *, (([AddressDisplay])&', '&([City])) AS Address
The City is stored in database with the city name and an additional abbreviation added. I need to get rid of the abbreviation, if possible.I DONT control the database its from a 3rd party.
Example: Houston[HST] I need to remove the [HST]
Can this be done? Either in the command statement of perhaps in the displaymember of the combobox that reads the database?
I'm running into a slight problem with an SQL INSERT INTO statement. I've tried setting this up first as a command statement and now as a stored procedure. When the process runs it's not signaling any errors and it appears that it's working properly. However when I check the database nothing new has been added. I have the statement within a try catch and it's not catching any errors. I've gone so far as to delete the table and recreate it, still nothing. I should also point out that this entire statement was essentially a copy & paste from another program that's working perfectly.
vb.net code below
Code: Try Dim cmd As New SqlCommand cmd.Connection = con
I have a datagrid with data and I want to update a database with the data on the datagrid. I only want to update one column, the problem I have it is that the Column it is name diffrent on the datagrid than the database. On the datagird it is name "EloBirdFinal" and on the database it is name "EloBird". I did some code but it didn't work. I will put my code here
Dim RowCount As Integer = DataGridView1.Rows.Count - 1 Dim ColumnCount As Integer = DataGridView1.Columns.Count - 1 Dim RowIndex, ColumnIndex As Integer
I am converting old VB6 code to VB.NET with ADO.NET (OleDB). This is my query that will create a blank table when ran in VB.NET, but then works when ran directly in Access. This code presumably also works in VB6, as I am using the same SQL:
SELECT qryAsOf.name, qryAsOf.type, 0 as opt, 0 as swap INTO qryCon FROM qryAsOf LEFT JOIN qryLinked on qryAsOf.c = qryLinked.lc
I feel like this has something to do with the left join and select into being together, but like I said it is only VB that has an issue with it, Access handles it perfectly.Without the INTO line, this query returns all 600+ rows.
This DOES NOT WORK:
cm.CommandText = "CREATE TABLE qryCon (etc...)" cm.ExecuteNonQuery() cm.CommandText = "INSERT INTO qryCon SELECT ..." '(rest of query above without INTO line) cm.ExecuteNonQuery
This DOES WORK:
cm.CommandText = "CREATE PROC qryCon AS SELECT ..." '(same select as above without INTO, again) cm.ExecuteNonQuery
The CREATE PROC that does work is fine, except I need to insert data into it later, so I get errors about how I need an updatable table. I really want the end qryCon to be a table, but I can't seem to get that to work :(
*However, when I do something like this (using the stored proc (renamed) above which, if viewed in Access, is full of data)
cm.CommandText = "SELECT * FROM storedProc" dr = cm.ExecuteReader
[code]....
This DOES NOT WORK! By the way, I removed the concatenation in the query for readability. It is correct in the actual project.
im new with vb .net and im currently developing a simple information system for an agency .. im almost done with it but there seem to be a problem with my update statement for the change password code here's my code..,[code]
I'm working a code to do an update statement but I get an error. I have the name of the column in a variable I added a parameters to pass the value but I get an error. The error says that Parameter @Ronda has no default value?
I am fresher in vb.net but I have experience in vb 6.0. But I want to connect database in sql server through sql connection. In that case how to create connection with window or sqlserver authintication mode and how to add or update new record in data base in batch transaction. Please help me with sample code. So that I can understand eassily.
I'm trying to update a specific record based off of a users selection. Regarding Entity Framework syntax, I'm not very familiar. Is it possible to achieve this SQL statement in Entity FrameWork?
I'm trying to refresh the datagrid after using the SQL UPDATE statement. The data changes physically in the database but the datagrid is not affected. The data is changed only after i restart the program.
How can i get the datagrid to refresh or update? I have tried using, among other code, the refresh() method, but it does not work.
I have the following code which works fine; For Each myFile As String In IO.Directory.GetFiles(Label1.Text, "*.zip") Dim fi As New System.IO.FileInfo(myFile) sFilename = fi.Name Col_Prac_no = sFilename.Substring(1, sFilename.IndexOf("_") - 1)
For example: I have filename as: I00018_20120329042035_111 The col_prac_no = 00018
Now, I want to update the for statement to have another value extracted from the filename. The first letter of the filename. In the example: I00018_20120329042035_111 The first letter of the filename in above example is I.
So if we have: S00018_20120329042035_192 the value will be - S.
I want to update the table in access database the code is following please guide me i am new with vb 2008.da.fill(ds) becomes yellow when i see the detail wrong sql statment.but in java same statement work correctly.
Private Sub Changebtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Changebtn.Click If TextBox3.Text = TextBox4.Text Then
i need a update statement to make a record = 1 example : the colum what need to change is active and it must stand on 1 to show you in to a listview (that part works) but i need to do it manualy to make them active now i liked to when the login is a succes then the record = 1 for you this is my code :
Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim adapt As MySqlDataAdapter Dim sqlquer = ""
[code].....
i get this error : Object reference not set to an instance of an object.
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click Dim s As New Staff
[Code]....
Basically I am trying to update each record with 2 random numbers each time the button was clicked,my problem now is, the system will update the record but the data was wrong. Example, by right all data should be different (randomly string) but for some row it was updated with same data but in randomly, something row1 row2 row3 has exactly same data for column 1 and 2 then row 3 has distinct data, second time, row1 row2 same data row3 ro4 with different data. It is in random sequence. When I add a MsgBox to do testing in the For loop the data was updated correctly with all different data.
