Binding DataGridView To TableAdapter Query That Takes Parameters?
Aug 3, 2009
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.
Which does not match the query, either in name or order of parameter types.How can this happen? Any fixes? It also throws back errors at runtime for type mismatches, which don't occur when the parameters are in the 'correct order' in the query builder.
what exactly is the type of the second argument of CType
CType(testobject, Control)
what exactly is Control? how can Control be used as though it is an expression?i nid to know this because i'm trying to build a function that takes the exact parameters of CType, let's call it CType2public function CType2 (byref object as Object, byval thetype as Type) as Object problem is when i do this: CType2(testobject, Control) they give me "Control is a type and cannot be used as an expression".
I'm currently invoking a function that takes ByRef parameters using Control.Invoke (which I notice specifies the Object parameter array to be ByVal) but the array of parameters I give it isn't updated by the function. Is this possible with VB.Net 2003 or must there be some error in my code?
I have a query in a myTableAdapter that ends with WHERE column IN (@S). This works fine when I use myTableAdapter.Fill(dataset.table, "text") but I can't find any way that works to provide multiple text strings such as "text1, text2" for the IN parameter.
I have a string qText with the text of a query in it, say qText = "select * from Data". how can I execute it to fill a TableAdapter I have in my form with the resulting data?
i am putting this query in my querybuilder in the table adapter but i need to make the query only return the transaction done today!! i dont know the syntax to get the cuurent date today. this query should work in the tableadapter query configuration wizard!!!
ive been learning Vb.net at uni. Ive never used it before and im finding it a little difficult ( supposed to be easy )i usually code in c++ and MFC Problem I have craeted the database and added all the fields to the form.
Unable to create a parameter query using the table adapter wizard to process an access db file. Went online and attempted to create an instance for new adapter with out success, when I click finish the wizard does not like the in the query WHERE (Last_Name LIKE @Last_Name). Also receive a warning that my code contains to many arguments for 'txtLastName.Text' Tried to paste screen
Public Class FindMemberForm Private Sub FindMemberForm_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
What I want to do is be able to active a query for my datagrid by clicking on a button. How would I do that? Would I create the query as part of my tableadapter???
Im working on a project that includes a TableAdapter for filling data. I usually use parameters for queries I create, but what would be the best way to create a query that may have a wildcard without creating a bunch of queries?
i'm asking a lot of question here, because i have finally found a real helpful place to ask,and i have a lot of questions, anyways i made a login system in which i used an access database, everything is working fine, I Added a TableAdapter and made a query with users and there passwords, this is the code i used:
Private Sub OK_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OK.Click
I have a COM component that I want to call using late-binding from VB.NET (using Primary Interop Assembly - PIA method). My IDL signature for the COM method looks like: HRESULT Send([in]BSTR bstrRequestData, [out]VARIANT *pvbstrResponseData, [out]VARIANT *pvnExtCompCode, [out,retval]int *pnCompletionCode);
So 2 'ByRef' parameters in VB.NET lingo, and a return value. I attempt to invoke this method like so: Dim parameters(2) As Object parameters(0) = "data" parameters(1) = New Object() parameters(2) = New Object() Dim p As New ParameterModifier(3) [Code] ..... This fails spectactularly with an exception: {"Invalid callee. (Exception from HRESULT: 0x80020010 (DISP_E_BADCALLEE))"}
I assume this means I'm doing something wrong in my parameterMods array. Because if I comment out setting any value of the ParameterMods array to 'True' - it works. It of course doesnt update the parameters that are [out] parameters and so it's not working as intended. Is there something else to consider since the method also has a return value? The MSDN example pretty much does exactly what I am doing, with the exception that example did not have a return value.
I have a DataGridView on my form and I'm wanting to override the 'Add New Record' button on the DataGridView controls, and display my own 'Add record' form. The problem is, when I do so, I no longer get the Auto-increment functionality of my primary key field (as i would If i used the default functionality of that particular button).
so ai have created this new TableADAPTER in my dataset, and it pulls data from two different tables namely card and transaction. I have created a datagridview to see the result, however when I try to filter the result, nothing is returned to fatagridview.
i'm making a utility in which i'm loading 100,000 records again and again, problem is that it takes much time to load records in datagridview every time.
i've used data set and data reader both but same result. if i use paging then there's will be a problem of search a record on keyup event.
If a user clicks the blank row at the bottom of a DataGridView and moves focus away from the DataGridView, the row click in now is in a state that indicates a change is made to that row.
Is it possible to tell the DataGridView to un-mark this row as being changed?
Is it possible to reset this row when focus is off the DataGridView?
We are using the following event handler to alert the user if the Invoiced On is left blank:
Private Sub dataGridViewPayments_CellValidating(ByVal sender As Object, _ ByVal e As DataGridViewCellValidatingEventArgs) _ Handles DataGridViewPayments.CellValidating
[Code].....
Looks like we need a way to stop this from executing if the user simply clicks in the grid then clicks somewhere else in the form.
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.
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.
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
