FAQ: Make A Parameterized Query In The Database?
Apr 11, 2009How do I make a parameterized query in the database with VB.NET? remember to mark the replies Welcome to the All-In-One Code Framework! If you have any feedback,
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Parameterized Query : Works With Execute Query But Not In Code?
Oct 22, 2009I have created a parameterized query in my tableadapter. Here is the SQL:
SELECT CalcinerID, Comments, CorrectiveActions, CrucibleOxideWt, CrucibleWeight, DCPressure, DCTemperature,
Date, DischargePressure, FeedPressure, FiredCrucibleOxideWt, GmSampleWt, LIMSNumber, LotNumber, MaterialType,
OperatorID, QualLabOperator, QualLabTimeStamp, RecordID, ToteBinNumber [code]....
When I use the Execute Query button in the Tableadapter Query Builder, the query works fine; I get all the rows I expect. However, when I run this in my code, the query behaves like an equality statement (i.e. Lotnumber = @Lotnumber) rather than a LIKE statement (Lotnumber LIKE '%' + @Lotnumber + '%').Here is the code that is not behaving correctly. Note that I have a textbox, LotSearchTextbox, where I enter the portion of the Lotnumber that I want to use as the filter. I also have a button, LotSearchButton:
Private Sub LotSearchButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles LotSearchButton.Click
Try
Dim SomeNumber As Integer = Me.LotCalcinerO2TableAdapter.FillByLotNumber(Me.CalcinerDBDataSet.LotCalcinerO2,[code].....
why the query works in the Query Builder but not in the code?
Asp.net - Parameterized Query - Error When Executing A Query?
Nov 2, 2010I've recently been trying to figure out a way to get parameterized queries to work and i think i'm almost there but seem to be getting an error when executing my query
Here's the code
[code]...
.net - Parameterized Query As String
Nov 15, 2010In my project I need to log all queries executed against my database. As an example we can use the staff user data here. In that class I have a function generating the command with the parameters as follows:
[Code]...
Getting An Error With Parameterized ADO Query?
Dec 17, 2010[Code]...
What am I doing wrong? BTW, I know nchar(10) is not a good choice for first and last name.
SQL - Parameterized Query Not Working
Apr 15, 2012statement = "SELECT OrderID, (SELECT VendName FROM Vendors WHERE Vendors.VendorID = Orders.VendorID) " &
",OrderDt, RcvdDt, OrderTotal " &
"FROM Orders " &
"WHERE VendName=? " &
"ORDER BY OrderDt DESC"
Dim cmd As New OleDbCommand(statement, connection)
cmd.Parameters.AddWithValue("VendName", txtVendorFilter.Text)
Dim reader As OleDbDataReader = cmd.ExecuteReader(CommandBehavior.Default)
I was trying to do this before by simply concatenating the textbox value right into the SQL and I was getting a "No values given for required parameters", and read that that I should use parameterized queries instead. So I tried this and it doesn't give me any errors, but the reader never has anything in it. I've never used parameterized queries before, so I'm a bit lost as to why this isn't working. I've changed the above code to account for OLEDB from what I briefly read on how it should work, and it's giving me the "no values given for required parameters" again.
The Parameterized Query Which Was Not Supplied?
Jul 21, 2011I keep getting this error :
The parameterized query '(@AdminEmail nvarchar(4000),@AdminPassword
nvarchar(4000))SELECT' expects the parameter '@AdminEmail', which was
not supplied.
[code].....
Parameterized Query And Special Chars
Nov 8, 2010I solved this issue in this thread but there still are issues with special chars. ie 'I thought by doing parameters that it would take care of any special chars for you. Well i am still getting mysql exceptions about syntax. I look at the string it is working with and it has a "'" in it.Why are they not working as I expect them to?
View 7 RepliesVS 2005 Parameterized Query Update?
May 15, 2009As you may have seen in my other post, I have to switch over an all text SQL statement based database interaction program to using parameterized queries instead.I remember doing it this way in college but I don't seem to be able to recall one part of it. The program I wrote back then and some code samples here both point to doing the code as I did so far:
m_strSQL = "UPDATE [OWNER DATA] SET [FIRST NAME] = @strFName"
m_strSQL &= ",[LAST NAME] = @strLName"
Dim upCMD As New OleDb.OleDbCommand(m_strSQL, m_Connection)
upCMD.Parameters.Add("@strFName", OleDb.OleDbType.Char, 30, "[First Name]")
[Code]...
it ran the SQL statement and that's that. Can I just do that with a parameterized query too without using the adapter.update()? And for bonus points, why the heck did I use that command in my old college program cuz I sure don't know?
Mysql Parameterized Query Not Filling In The Values
Nov 8, 2010Trying to do a mysql parametrized query and i'm having a little issue.
cmd = conn.CreateCommand
cmd.CommandText = "insert into `rootforest` (rootforestname, BusinessName) VALUES (?rfname, ?bname)"
[Code]....
It errors on the executenonquery. Says the column rootforestname can not be null. i don't under stand why it does not fill in the value in the command text.
Sql - Parameterized Query Expects The Parameter Which Was Not Supplied?
Oct 5, 2010im having a problem with my code Private Sub TextBox2_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox2.TextChanged
[Code]...
once i typed in the string in the textbox to search for an item i get this error The parameterized query '(@Parameter1 nvarchar(4000))SELECT * FROM borrow where (Departme' expects the parameter '@Parameter1', which was not supplied.""
VS 2005 Table Adapter Parameterized Query?
Nov 17, 2009I added a query. FillByDate using Table Adapter which takes a date as input from the code.The query I have set is the following:
SELECT YMD, AIR_TEMP_AVG, AIR_TEMP_MIN, AIR_TEMP_MAX
FROM mytable
WHERE (YMD = :PARAM)
[code].....
VS 2010 - Automated Insert SQL Query Parameterized?
Jul 13, 2011I wrote this little function to allow me to pass an ArrayList of Strings and then based on the table passed to pre-build a SQLCommand like so
INSERT INTO table` (`column`,`column`) VALUES (`value1`,`value2`);
The function for this is here:
Public Function _SQLInsertBuilder(ByVal values As ArrayList, ByVal Table As String) As String
Dim commandString As String
Dim columns As ArrayList = GetTables(Table)
commandString = "INSERT INTO `" & Table & "` ("
For Each column As String In columns
[Code] .....
Now I know that much like mysql_real_escape_string() VB.NET has a Parameter ability to make querys safer. How could I parameterize the values during the build of the string.
Why Does Sql Command Work As String But Not As A Parameterized Query
Jul 22, 2011[code]Myself and a coworker have stared at this quite a lot and we can't figure out why it's not working. The problem is in the value for @ID (since it still works when I leave the other one parameterized). The funny thing is, Just a few lines of code above it I have a different query that sets a parameterized value for the same ID, using the the same choices list that the For Each loop is getting the match variable from.Choices is a list of longs, and when I use choices(0) to parameterize ID in a query, it works. But now down here in this loop I have the new match long, and it doesn't want to make it work for me.
View 1 RepliesError: Parameterized Query Expects A Parameter Which Was Not Supplied?
Mar 24, 2012I'm getting the error: The parameterized query(@CustomerID, @ProductCode, @DateOpened) expects the parameter @ProductCode, which was not supplied.For one thing, my INSERT query has five parameters, not just the three listed in the error notice.
Another thing, I supplied @ProductCode in the AddWithValue statement.
Another thing is that I don't get the error when I change:
InsertCommand.Parameters.AddWithValue("@DateOpened", Date.Today.Date)
[code].....
Parameterized Query For Insert And Update A Table In MsAccess
Jun 26, 2009I am using following code for Insert records from LIstview to table in MsAccess:
[Code]...
DB/Reporting :: Make A Query To A Sql Database?
Apr 18, 2008i'm trying to make a query to a sql database, so when the user enters the id, the columns related to that id will be displayed. but, im getting an error: "Object reference not set to an instance of an object"
the code:
Code:
Try
TextBox1.Text = InputBox("Enter the Id.", "fsdf.")
query = "select * from Students where Id = '" & TextBox1.Text & "'"
[Code]......
DB/Reporting :: Open An Access Query In A Datagrid View And Then Be Able To Make Changes To The Datagrid And Then Save It Back To The Database?
Apr 15, 2008What I am trying to do basically is open an access query in a datagrid view and then be able to make changes to the datagrid and then save it back to the database.When I try to save:
Me.BindingSource.EndEdit()
Me.TableAdapter.Update(DataSet)
It says that update is not a member of the tableadapter... Why is that?
Access Database And Using A Parameter Query With The LIKE Operator To Return All Rows That Match Query?
Apr 28, 2010I am connecting to an Access database and using a parameter query with the LIKE operator to return all rows that match query. The string to search for is taken from a Textbox
sql =
"Select * FROM Allview WHERE Info Like" &
"*" &
CStr(TextBox1.Text) &
"*"
The query does not return any data in vb, but when run from access with same string, there is data returned.The connection to the database is done correctly, as I am able to return data with various other queries.
Partial code :
Dim
con As
New OleDb.OleDbConnection[code]....
Correct SQL Query: Error "Microsoft Jet Database Engine Cannot Find The Input Table Or Query 'IF'?
Aug 27, 2010The database:
"ID (Primary key)" | "Title"
0 | "title1"
[code].....
OK, before adding values to database, we should check if a row exists with this values :)TO do this, creating a Stored Procedure is a best way to deal with the database fastly.So... The problem now is, at the runtime, Miss OleDB throw this error:Microsoft Jet database engine cannot find the input table or query 'IF
Correct This SQL Query: Error "Microsoft Jet Database Engine Cannot Find The Input Table Or Query 'IF'?
May 29, 2009i should say hi experts :D . Help me with this pretty code :)
The database:
"ID (Primary key)" | "Title"
0 | "title1"
[code].....
OK, before adding values to database, we should check if a row exists with this values :)TO do this, creating a Stored Procedure is a best way to deal with the database fastly.So... The problem now is, at the runtime, Miss OleDB throw this error:Microsoft Jet database engine cannot find the input table or query 'IF
How To Create Parameterized Queries
Dec 4, 2009Using parameterized queries with ms access 2003 integration. To search any data according to different criteria.
View 2 RepliesMicrosoft - How To Use Parameterized Queries
Dec 5, 2009How to use parameterized queries in vb.net? Because I always wanted to make a program that could read an ms access database and display results based on your query.
View 1 RepliesDifference Between Parameterized Property And Function?
Mar 15, 2012I am coming from the C# world to VB.NET and this puzzles me. Why are there 2 ways of doing the same thing? or is there some difference I am not aware of? What is the difference between the following:
Public ReadOnly Property Test(ByVal v as String) As Integer
Get
Return SomeOperationOn(v)
End Get
End Property
And
Public Function Test(ByVal v as String) As Integer
Return SomeOperationOn(v)
End Function
When do you use one as opposed to the other?
Linq Join On Parameterized Distinct Key?
Sep 9, 2010I'm trying to LINQ two tables based on a dynamic key. User can change key via a combo box. Key may be money, string, double, int, etc. Currently I'm getting the data just fine, but without filtering out the doubles. I can filter the double in VB, but it's slooooow. I'd like to do it in the LINQ query right out of the gate.
[Code]...
"Range variable name can be inferred only from a simple or qualified name with no arguments."
.net - Entity Framework Parameterized/Overloaded Constructors?
Mar 17, 2011In my previous application using Linq2SQL I was able to overload constructors with parameters by doing this:
Namespace CoreDb
Partial Public Class Accomplishment
Public Sub New(ByVal accomplishmentTypeID As Object, ByVal description As String, ByVal title As String, ByVal applicableDate As DateTime, ByVal lastUpdatedBy As String)
[code]....
Basically using a partial class off the object, sharing the namespace of the .dbml file and calling the default constructor and then doing additional stuff. So then in my code I could do something like:
Dim accomplishment As New Accomplishment(id, description, title, applicableDate, lastUpdatedBy)
This seems to no longer work in Entity Framework as there is no default constructor to call.Does this no longer work? And if so what is a good alternative to implementing something like this?
Parameterized Update Command - Missing Operator
Jul 27, 2009The
vb.net
For i As Integer = 0 To recorderInformationForm.DVRSDataGridView.Rows.Count - 1
strsql = "UPDATE DVRS SET DeviceName = ?, IP = ?, Notes = ?, " _
& "LastStateOnline = ?, TimesOffline = ?, port1 = ?, " & _
"port2 = ?, port3 = ?, port4 = ?, port5 = ?, port6 = ?, port7 = ?, port8 = ?, port9 = ?, " & _
"port10 = ?, port11 = ?, port12 = ?, port13 = ?, port14 = ?, port15 = ?, port16 = ? WHERE DeviceName = " & recorderInformationForm.DVRSDataGridView.Item(0, i).Value.ToString
[Code] .....
The Error:
Syntax error (missing operator) in query expression 'DeviceName = 001a'.
on line: ocmd.ExecuteNonQuery()
I think it might be something with the parameter symbol (?) and the WHERE clause but not sure..
VS 2010 Parameterized Multithreading Won't Accept More Than One Parameter
Jul 30, 2011I'm trying to execute a sub with multiple parameters on a separate thread, but I just can't get it to work, Here's my code
[Code]...
Why It Is Not Necessary To Initialize All Members In Parameterized Constructor Of A Structure
Jan 19, 2012When it comes to constructors in a Structure type ,it is fact that we can not explicitly provide the default constructor .It is provided by the runtime. Ok, another point that is applicable to C# language is that if we are defining a parametrized constructor then it is compulsory to initialize all fields . We can not leave any field uninitialized , since the runtime will not call default constructor if we are calling parametrized constructor .Its logically right , but in VB.NET language , actually you are free to leave any of the fields uninitialized in your parametrized constructor.
[Code]...
Invoke Parameterized Function Delegate From Background To UI Thread?
Oct 4, 2010What is the Invoke syntax to marshall data from a background thread receive callback method to a function on the UI Thread?(Form1).
Public Class Form1
MyDelegate = New DisplayData(AddressOf DisplayData)
Private Sub Form1_Load()
MyDelegate = New DisplayData(AddressOf DisplayData)
[code]....
