Can anyone see what I'm doing wrong in this
Dim connStr As String = "connection string goes here"
Dim conn As New Odbc.OdbcConnection(connStr)
Dim comm As New Odbc.OdbcCommand("insert into mytable values (0, @P1, @P2, null, @P3, 'n')", conn)
[Code]....
I get "A syntax error has occured." It appears as though my parameters aren't getting replaced with the values I'm telling it to use.
In VBE I have a combobox, a button and a listview.
SELECT * FROM table
WHERE description = @cmbDescription.text
My combobox has three items:
1 All
2 Item1
3 Item2
4 Item3
When user will select any Item the query will return the data related to that Item. My question is how to implement if user selects the option ALL in the combobox.
Microsoft Access queries with somecolumnname = [?] do not show up in the list of Views in the New DataSource Wizard in Visual Studio.
The query works perfectly from within Microsoft Access by just prompting for the values of the parameters.
The columns of the query should populate labels on my form based on the values in a couple textboxes.
What is the "best-practices" way to use parameter queries in my .NET application?
I am currently working on downloading the data automatically on this page[url]...
I would like to somehow be able to control the URL so that, say, when I use the [URL]..
the option selected for Location parameter would be PJM and when I do[code]...
I have a LINQ query:
VB
Dim Db = New MyDataContext
Dim Qry = From cust in Db.Customers
Select cust.ID, cust.Name
And I want to pass it to a function to filter it, like this:
VB
FilterAnyQuery(Qry, cust.ID) ' WHERE "cust.ID" CAN BE ANY FIELD
The Sub should be of this kind:
VB
Sub FilterAnyQuery(ByVal AnyQry As iQueryable, AnyField as ???)
AnyQry = AnyQry.Where(AnyField = "somevalue")
End Sub
How can I pass "AnyField" to the Sub and make the LINQ "Where" clause work?
When I run this code :
Dim username As String = TextBox1.Text
Dim pass As String = TextBox2.Text
Dim con As New OleDb.OleDbConnection con.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;
Data Source=""C:Documents and SettingsSaeedMy DocumentsVisual Studio 2008Projects
[Code] .....
I get these error message:
"No value given for one or more required parameters." at the line:
dr = cmd.ExecuteReader(CommandBehavior.Default)
what is the error.
I want to query items from countries that are selected from a treeview (with checkboxes). However the number of countries that is selected by the user is not known beforehand. So how can I make a proper query when the number of OR operators is unknown? For example: SELECT DISTINCT Item FROM Countries WHERE Country LIKE @c1 OR @c2 OR @c3 etc� and then add the parameter values based on the selected countries in the treeview. I looked into parameter arrays but can�t make sense out of it really
View 13 RepliesHow do I get Linq to ignore any parameters that are empty? So Lastname, Firstname, etc? If I have data in all parameters it works fine...
refinedresult = From x In theresult _
Where x.<thelastname>.Value.TestPhoneElement(LastName) And _
x.<thefirstname>.Value.TestPhoneElement(FirstName) And _
x.<id>.Value.TestPhoneElement(Id) And _
[code]....
I'm trying to bind a datagridview to a tableadapter which contains a query that requires parameters (for the WHERE statement of the query). The datasource is a SQL Server database. When I bind the datagridview in design view, it does not let me choose which tableadapter method I would like to use. The way I've been fixing this is to go into the code behind that form, where Visual Studio puts in some auto-generated code that fills a datatable in the dataset and I change the method that it's using there and put in my parameters. I don't think this is the proper way to do it, however, especially because sometimes that code doesn't even get generated! My other solution is to just programatically bind the datagridview to a datatable which I have filled using the tableadapter. This seems like more work than it should be, though.
View 5 RepliesI'm trying to update an Access database by using an OLE connection, retrieving the information from textboxes where the user enters the new information.All the fields in my Access table are required fields, so I have validated that some info is entered in each one of the textboxes and that is the correct data type.But when I run the update query I get an error message saying something like values haven't been entered for some required parameters (my Visual Studio is the Spanish version, so I can't give the exact error message in English).The bit of code where the error occurs is inside the procedure called by my "Ok" button:
Dim campo1, campo2, campo3, campo4, campo5 As String
Dim campo6, campo7, campo8 As Double
Dim campo9, campo10 As Integer
[code]....
(I didn't post the whole code inside the procedure, but of course I'm creating the connection and everything)
The table has 10 fields, and the data is read from the textboxes and stored in variables (campo1, campo2, campo3, etc.), which I'm then using in the "set" query command.
"id" is the first field from the selected row in the datagrid, which I'm sending as a parameter to the procedure called by the "OK" button.The error message shows at runtime, so I'm guessing it's something in the query. Am I writing it correctly?
I have a search function de build.We are using pure ASP.NET w VB.NET We have multiple DropDownLists and we're building a search query with whatever was selected in those DDLs. My question is, how can I handle the blank values (unselected dropdownlist values) with the SQL Query ? I'm using AND operators in the query so if anything is blank it'll fail the search. If the dropdownlist has no selected value, i don't want the value to be part of the search. It would be easy to code with just 2-3 parameters, but we're looking thru at least 10 items and doing a SWITCH CASE or multiple IFs would soon become mayhem.
View 1 RepliesBanging my head against a wall here. I have a query that looks like this.
SELECT FirstName, LastName, Address
FROM Members
WHERE FirstName LIKE 'JOE%'
That works absolutely fine in query wizard and the DataTablePreview data window. However, when I do this.
SELECT FirstName, LastName, Address
FROM Members
WHERE FirstName LIKE ?
I get nothing when I run the fillby method. If I change the LIKE to =.
SELECT FirstName, LastName, Address
FROM Members
WHERE FirstName = ?
Everything works great. I need to get LIKE working though so I can wildcard search.
I'm using the SQL server OLE db connections if that means anything.
UPDATE
Using the LIKE operator doesn't work at all. When I just swap out = for LIKE. Nothing is returned.
GOAL: Bind nested ListViews to LINQ generated iQueryable of anonymous type. I want to use LINQ because you can use GroupBy and bind the nested ListView to the 'it' keyword.
SETUP: I have groups of sets of conditions. Each set of conditions is stored in the BillingCodes table. Each group of BillingCodes is stored in the BillingGroups table.
I have a custom object that stores the ID, Name, and NumCodes for each BillingGroup that the user has chosen.I have a collection of these objects called GroupsList that has a list of the groups that the user has chosen.
Problem 1: I can iterate through GroupsList and grab all the IDs. How do I translate the SQL 'WHERE ID IN(a string of comma delineated IDs)' for LINQ to SQL? Is that the best way to do that?
Problem 2: Once I have the list of BillingGroups I need to iterate through each group. For each group, I need to iterate through the BillingCodes. For each BillingCode I need to generate a WHERE clause that has all of the conditions in the BillingCode. I propose something like so:
for each BillingGroup in BillingGroups
for each BillingCode in BillingGroup.BillingCodes
where1 = "..."
next
next
Problem 3: Here's the part where I don't have a clue. I need to dynamically create a query in LINQ to SQL. Keep in mind that I don't know how many groups there'll be or how many codes are in each group.
There are 2 tables:
**transactions**
transaction_id
patient_id
[code]....
Trying to search a database from vb.net I have the following function
[Code]...
No value given for one or more required parameters. I found the code in a vb.net book someone lent me. It doesnt work at the moment and I wondered if I have everything correct the bit at the top in brackets (Phone LIKE?) is that saying check if there is a row in the 'Phone' column that is the same? Because I am also selecting Phone (the column) in that line? Later I say compare to Form3.Textbox1.Text so I am not sure whether they should both be 'Phone' inthe SQL line? Is it saying that If it finds something display whatever is in the details column to display in the text box?
I am trying to bind my SQL param's qurey to bind to a table. My problem is i get this error "Fill: SelectCommand.Connection property has not been initialized."
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
If RadioButton3.Checked = True Then
Dim connectionGrid As SqlConnection = New SqlConnection("Data Source=BST;Initial Catalog=dsfs;uid=dfsdf; pwd='dsfsf'")
Dim commandgrid As SqlCommand = New SqlCommand()
[code]....
I'm writing a query to select all records that has any part of parameter. I have one table called Employees. Some people have name like this: John David Clark If the parameter is
[Code]....
I should be able to get result back as long as there's a match in the parameters. If I use Function Contains (q.FirstName & " " & q.LastName).Contains(employeeName), I will not get any result back if employeeName is "John Clark" Function Contains looks only for next words from left to right. It doesn't match a single word at a time. So that's why I used this in the Linq to SQL:
[Code]....
I am getting error [07002] the # binded parameters < the # of parameters makers, i checked both parameters were perfect even though i am getting this error here is my code
[Code]...
I was wandering is it possible to use a query within another query below is the code I am trying to use.
Public Function GetInventByComp(ByVal CompID As String) Using DC As New DataClassDataContext
'need to get company id's based off names? thats bad should be name from Id need to rethink this
Dim invent = (From C In DC.Inventors_Companies _
Where C.CompID = CompID _
Select C.InventorID).ToString
[Code]...
I was trying to us multiple values in a string like "1, 3, 5" but I can't seem to get that working either so I am trying to use just a single value now. Can anyone help me? "Yes I am new to this"
I've been trying to pass two parameters to my report using code the two parameters are DateTime type, my problem is crystal report viewer is still asking for the first parameter only and it accepts the second one?! in my report i've used two parameters ?firstDate and ?secondDate as dateTime parameters and used them in selctionformula where the date is between the two paramters.[code]...
View 4 RepliesHow can I set up parameters to work with my project?
Like execute_shell("myapplication.exe -filename.txt") or anything like that.
I need to call a function that expects a DataType as a paremeter. I fail to get the right syntax to specify a datatype (integer, string, single, boolean, etc):
Public Sub AddSetting(ByVal PropertyName As String, ByVal PropertyType As Type, ByVal DefaultValue As String)
Dim p As New SettingsProperty(PropertyName)
p.PropertyType = PropertyType
p.DefaultValue = DefaultValue
[Code] .....
I am working vb.net08. Access Db. I am sending my below code for refference. Actually i am getting error when i am sending values from datatable to Temp Table in the Access Db. Error is : "No value given from one or more requaired parameters". In my datatable name called 'Crosstab1' few columns having text type and few columns having Value type. So i am getting error while i am Inserting values into Temp Table Called 'Official'. My Code is:
[Code]....
we are suposed to create a program that we like with certain peramiters, I have done as much however I have an error and I can not find a solution anywhere. We are, before you ask, able to seek help on this matter. Here is what I have:
[code]...
I cant seem to find a solution on how to pass parameters to another exe like adding some parameters after path in shortcut, and then launching that shortcut, only I want to do it directly without making shortcuts. So ,how would I pass parameters needed to start another exe (console in my case)?
View 1 Replies[code]That code will add a new DropDownItem everytime I click on it, then everytime I click on those new created items it calls my "aa" function. How to I set this up so I can send a parameter? It just needs to be a single int parameter.
View 15 Repliesi've got a database with a table called Customers, and i've created a form so that i can edit the customer details and update the database. However when i click the update button, it doesn't work and keeps coming up with the error which i've put in the title.
Private Sub btnupdatecustomer_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnupdatecustomer.Click
If MessageBox.Show("Are you sure you want to update your details?", "Save", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
Dim intPosition As Integer
[code]....
The bold/underlined text is where the error is coming up.What am i doing wrong? I've got a feeling it is something really stupid as i modelled the code on an example project that a teacher gave me, so it's practically the same code except for the field names etc.
as i need add the two commandline parameter on debug window.
/url=
one is okay
[code].....
i would like to know something more relating to parameters. i have always been adviced to use parameters but i am bit confused as to how to use parameters while filling a dataset like if i am using a oledbcommand i can always use paramters but how do i parameterise the following :
dgMastDet.DataSource = Nothing
myBindingPenBase = Nothing
txtCd.DataBindings.Clear()
[code]....
i am using the above code to filter a list in the dgv as a help dialog for the selection of a master.my prob. is the now xFilter is to be typed in a regional language. so it is bound to have an ' as a character at some point or the other and if that comes in the char. then it will b giving me an error.. so how do i use it as a parameter ?
i know how to use parameters on INSERT, UPDATE and DELETE into sql server.like:
VBNet
updateCMD = "UPDATE table SET somevalue= @valueparam1 WHERE ID = 2"
Adapter.SelectCommand = New SqlCommand(updateCMD)
[code]....
I am using Visual Basic 2008 / MYSQL
Basically i have 2 tables in mysql called Data and products
The first sql query i want to do is something like this to scroll through the recordset of products and bring back information;
dbquery.commandtext = "select quantity, sku, condition from products"
But then what i want to do is bring back information from the Data table based on the sku and condition of the first sql?
so it would be something like this
subquery.commandtext = "select lowestprice from data where sku = *SKU FROM FIRST TABLE* and condition = *CONDITIONFROM FIRST TABLE*"
