VS 2008 : Passing MySQL Parameter As Object Instead Of DateTime?
Jun 13, 2011
I am having trouble with a mySQL query with the .NET connector. When I create the query, it automatically creates my parameters as objects. I usually change the type to the correct type, which in this case is Date, but I get different results passing in the parameter as a date.When I do "Preview Query" as an object, I get the correct results, but bad results as a Date. I would just leave them as objects, but it errors out when I try to pass a date in.Here's the part of my query that I'm having trouble with:
(Tickets.Resolved >= str_to_date(@startDate, '%m/%d/%Y')) AND (Tickets.Resolved <= str_to_date(@endDate, '%m/%d/%Y')) AND
(Tickets.Status = 'resolved' OR
Tickets.Status = 'rejected')
with vb 2008 express is there any EOF & BOF properties if not is there any alternative for the same any sample line of code (2) what is the place holder for MySQL parameter with command object?
Private Sub setDropdowns() Using licensingModel As New licensingEntities
[code]....
My problem is that i dont know how to define the parameter type for the sub. Because they are different types of objectSets being passed each time, I thought IObjectSet(Of EntityObject) would work, but it gives me the following error:
Unable to cast object of type 'System.Data.Objects.ObjectSet1[licensingModel.tblLookup_Country]' to type 'System.Data.Objects.IObjectSet1[System.Data.Objects.DataClasses.EntityObject]'
In my VB.NET project I wanted to run a JAR file in a separate thread. Now the question : Is it possible to pass parameters to a JAR file during run time from VB.NET??
I have a Dialog Box that creates a Link Label for each item in a list.When one of those LinkLabels is clicked the DialogBox raises a LinkClicked event.Before, I was using code like this in the Form that was instantiating the Dialog:[code]But I don't like that for several reasons.What I want to do, and what I thought would be straight forward, was to pass the AddressOf the UserClicked PoLink Method into the ShowClickableLinksDialog Constructor and do an AddHandler within the constructor and also assign the Delegate to a Property on the Dialog so as to RemoveHandler when the Dialog is Disposed.[code]But I get a squiggly on the tempLinkClickedEventHandler after the AddressOf Operator saying: "AddressOf operand must be the name of a method (without parenthesis)"I don't get it.I've played around with a number of permutations and can't get what I feel ought to work, to work.
I'm attempting to pass in a collection of dates to a T-SQL 'IN' clause via a date array (see below for how data is collated).
'Workout weeks difference between start and enddate Dim wksDifference As Integer = CType(DateDiff(DateInterval.WeekOfYear, bookingStartDate, bookingEndDate), Integer)
I want to pass a comma delemited list of values as a parameter to a query I'm building using the designer in Visual Studio 2008 based on some strongly typed DAL tutorials I was going through. The query is going against a DB2 database. Here's what I want to do:
select * from prices where customer in(?)
It works fine win I pass in 123456 as ?But fails when I pass in '123456' (it is a char field so I don't know why this doesn't work; it must be adding these behind the scenes) or 123456, 123457 or '123456', '123457' I'm adding this page to a portal where all the data access is being done based on the DAL designer model with a BLL that calls it so I wanted to do it this way for consistency.
I've got a main form (Form1.vb) where I created some controls (with the Designer).I've created a class myTextBox, inheriting from TextBox, in myTextBox.vb.In the main form, I call procedures from myTextBox. The issue is, those procedures use values from the Form controls. So the class doesn't recognise them as initialised.What's the best solution for this?I think I could pass the object itself as a parameter but doing it on each call seems a bitredundant and it thickens the code.Is there any way to access the Form1 controls and objects directly from the myTextBox.vb class?
I have got a MySQL database that has got some dates stored in a Date format (YYYY-MM-DD) however when i try and import the data i get an error saying: "Unable to convert MySQL date/time value to System.DateTime"
My question is with regards to SqlCommand parameters in VB.NET. I have a database table which contains a datetime column, and I am trying to return all records between a daterange / time. I am using the syntax 'WHERE recordDate BETWEEN @StartDate AND @EndDate', and specifying the parameters using sqlComm.parameters.addwithvalue("EndDate", datetimeVar), etc.
My issue here is that when my datetimeVar contains '8/31/2010 11:59:59 PM', it ends up getting rounded to '9/1/2010'. I can only tell this by the results I am getting back, which include the records from '9/1/2010 12:00:00 AM'.
Am I missing something here or is this a bug? The parameter is of type DateTime, and the value is correct at runtime. In the meantime I have no issues if I write the datetime into the sql string itself ('WHERE recordDate BETWEEN '" & datetimeVar & "' AND ...), but obviously I would prefer to use parameters for this.
I have a Search Form that can search by a few different fields. The problem field is birthDate. On the form it is a string. In the SQL 2005 db it is a DateTime that can be null.
The code below is sequential as far as declaring the variable on the form and then setting it. Then the call to the BLL and then the call to the DAL.
i'm having a problem converting a date to the right format. Below is the code I am using:
Dim getDate As DateTime getDate = DateTime.Now With cmdParent.Parameters .Add("@date_created", OdbcType.DateTime).Value = getDate .Add("@last_updated", OdbcType.DateTime).Value = getDate
[Code]...
This causes the following error: ERROR [HY000] [MySQL][ODBC 3.51 Driver][mysqld-5.5.8-enterprise-commercial-advanced]Incorrect datetime value: '' for column 'date_created' at row 1
This is being inserted in a MySQL db. The date_created column is of type datetime.
I am trying to store a time from my textbox field value but I got this exception error,Failed to convert parameter value from a TimeSpan to a DateTime.[code]
I have a bit of a problem. I am currently makeing a webpage that has a few dropdown lists on each page. The purpose of the dropdown lists are to filter the information in a YUI datatable, aswell as eachother's information, eg. a different location will have different commodities etc.
I have made a common function to read the option ID's and values from the DB, but the information can be used in 3 ways. Currently, when the page loads I create a Asp:Placeholder that I load the Dropdown lists in. If the information is requested by Ajax to update a select box, I concatenate a HTML string server side and response.write it. But now my client has requested to have a lookup for if the list in the dropdown box is too long, which I am doing using a YUI modal panel and a YUI grid. I would still like to use the same data fetching subprocedure, but this time I would like to send the data back as a JSON string.
Currently I have boolean flags to signal whether its the pages initial load to create a placeholder, or an update load to make an HTML string, but I would rather like to pass the "information rendering/formatting" subprocedure as a parameter, this eleminating the need for several boolean flags.
My Code
Public Shared Sub LoadCoop(ByRef PlaceHolder As Object, ByVal SearchCriteria As String, ByVal Database As String, ByVal InitialLoad As Boolean) Dim SqlConnection As New SqlConnection
I am calling a crystal xi report from a windows form and passing 2 date parameters and a customer name. In some cases this customer name contains '&' eg Brown & Williams
In these cases my report fails and errors. if the name doesn't contain '&' it works. How can I pass the parameter with a & in it ?
i've been attempting to update a DateTime Field in a MySQL Table i've created via vb.net. I've made many attempts however i'm still getting the error that i have an error in my SQL Syntax. The format that the DateTime in Vb.net is 6/21/2011 12:46:25 PM. I need to convert that to the MySQL DateTime Format which is 2011-06-21 12:46:25 and also is running on a 24 hour clock. I've searched many forums and haven't found a conclusive solution yet. Below is the code i have so far, with attempting any DateTime Conversion.
Imports MySql.Data.MySqlClient Public Class FinalFailedPinNumberAttempt Dim connectionstring As String = "Server=localhost;user id=root;Password=;database=mylaundrycompany" Dim SQLConnection As MySqlConnection = New MySqlConnection
I need to be able to do enter a workshift in a program. In access it made no issue of the fact that date/time was the format. Now in my program when I enter a shift for example
begin: 08:00:00 end: 16:00:00 t converts it to this in MySQL 2008/00/00 00:00:00 and 2016/00/00 00:00:00.
constant expression is required Public Sub ExampleSub(ByVal Test as string, Optional ByVal fromDate As System.Nullable(Of DateTime) = Date.Today) 'A Great sub!
the DGV_currentactivities.CurrentRow.Cells(3).value is a datetime value that is put into a Datagridview via another stored procedure. When I run it in sql, it lists as a correct SQL datetime: 2011-04-27 05:54:51.003, in the datagridview it lists as: 27/04/2011 5:54:51
I am inserting data from vb.net to oracle but I am unable to insert datetime except date into oracle. I want to insert date and also time of entry into database:
I created a dataset that is getting data from an access database. Now i would like to go further and make the dataset query accept a parameter from a form datepick value. the query in my table adapter I have changed it as follows to accept a parameter on date1.[code]The code I am using in my form is as below. I get a null reference exception on the second line(Object reference not set to an instance of an object). it seems as if my selectCommand is bringing nothing.[code]
I have a bound DataGridView (dgvBuild) that contains data based on a "ProductID" that is derived from selecting the value from a ComboBox. How do I pass the ComboBox Value to the DataAdapter to retrieve records to reload the dgvBuild? Below is the code for theDataAdapter.This is the line that was created when I bound the DataGridView to a DB Table.
I need to pass an event as a parameter to a function and I'm wondering if there is any way of doing this.The reason why I need to do this is because I have a sequence of two lines of code that is littered all over my program, where I dynamically remove the handler to an event, then set the handler again. I'm doing this for several different events and event handlers, so I've decided to write a function that does this. As an example, let's say I have a combobox in my code called combobox1, and I have the handler called indexChangedHandler. In several places of my code, I have the following two lines:[code]Now, I don't want to keep on repeating the above two lines of code (or similar) all over my program, so I'm looking for a way to do this:[code]So far, the "evt as Event" part of the argument of the setHandler function is giving an error. Any ideas on the right way to do this will be very welcomed.
I need to pass an event as a parameter to a function and I'm wondering if there is any way of doing this.
The reason why I need to do this is because I have a sequence of two lines of code that is littered all over my program, where I dynamically remove the handler to an event, then set the handler again. I'm doing this for several different events and event handlers, so I've decided to write a function that does this.
As an example, let's say I have a combobox in my code called combobox1, and I have the handler called indexChangedHandler. In several places of my code, I have the following two lines:
So far, the "evt as Event" part of the argument of the setHandler function is giving an error.
P.S I've asked this question on a couple of other forums and keep getting asked why I would want to set the handler immediately after removing it. The reason is because dynamically adding an event handler n-times causes the handler to be executed n-times when the event occurs. To avoid this, i.e to ensure that the handler is executed just once when the event occurs, I first remove the handler each time I want to add the handler dynamically.
You might be asking why the handler would be added several times in the first place... The reason is because I add the handler only after a particular event, say E1, in my form has occured (I add the handler within the handler of event E1). And event E1 can occur several times within my form. If I do not remove the handler each time before adding it again, the handler gets added and thus executed several times.
Whatever the case, the processing occuring within the function is not of ultimate importance to me at this time, but rather just the means of passing an event as a parameter.
I'd like to create a function myFunc with one parameter, which is a delegate. I should be able to call it with a delegate as parameter.E.g.[code]But how do I code myFunc, in other words, how do I enable myFunc to have it passed a delegate so that it can be called using myFunc(addressof test Func)?
I'm wondering if this sort of thing is possible in VB.NET.. say I have a routine which accepts an integer array, defined as:
Sub WriteTable(iRows As Integer, arrColumns As Integer()) The arrColumns parameter is an integer array of column widths. I can pass a value by doing this:
I have this question about how to retrieve a column with DateTime from MySQL as String and put the data in a textbox. [code]I want to use this to cross reference with other table in other database, but to do that i need to copy the data into a textbox as string or a datetimepicker as datetime.
