DB/Reporting :: Retrieve DateTime To VB 2008?
Oct 13, 2009
I am not new to vb but still an amateur, however, I am still learning linking vb apps to mysql, here is where my troubles begin. I am stuck and been trying for hours on end to get past this problem. It's starting to hurt my head! I am sure others have similar problems.I posted my imports and the module I put my public sub in. The sub is called as a form loads.The Error is:
An unhandled exception of type 'MySql.Data.Types.MySqlConversionException' occurred in MySql.Data.dll
Additional information: Unable to convert MySQL date/time value to System.DateTime
[code].....
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Jun 22, 2010
How to retrieve only date from DateTime in vb.net in dd/MM/yyyy format and I have a field in table in access 2007 which has date/time datatype. Data is stored in datetime format.(04/08/2010 12:01:07 AM) I want to retrive only dates which are in range of two DTPickers in dd/MM/yyyy format [Code]
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Feb 23, 2009
I have a problem in retrieving dateTime object from the database. I have this :
Return CBO.FillCollection(Of ObjectInfo)(CType(DataProvider.Instance().ExecuteReader("sp_SelectAll"), IDataReader))
Then When I want to display the date from the collection I get from the stored procedure. the date was truncated. It shows only the timein the ObjectInfo..there is a field call _mydate as DateTime.
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Jun 10, 2011
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.
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Apr 1, 2009
Is it possible to have a quick and easy way of retrieving the last 10 records from a table?
Currently what I have been doing is retrieving all the records then one-by-one cylcing through each record until I have the last 10. To me this seems to have a lot of over-head reading each record. I just wondered if there was a quicker way of doing it.
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May 7, 2008
I have 10 IP address I need saved so that when the programed is closed the user doesn't have to re type them all back in. To get around this I created a database that would store the values. My table contains one Field "host" and then has all 10 IP addresses listed below that.I'm trying to figure out how to make a text box on my form look at a certain row in a SQLServer 2005 table.
For example:
txtIP1.text = Row 1 of SQL table
txtIP2.text = Row 2 of SQL table
Here is what I have in my Form load Event. This works, but again I need the second rows value to show in the second txtbox.
[Code]...
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Jul 21, 2011
What is the easiest method of storing data and retrieving it using VB? FYI, I have not used Access before. It will be a movie database that stores title genre, etc. I thought about using a text file but i think thats crude and ran across this site:
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Jun 4, 2008
I need to convert a large VB6 app to vb.net which does a lot of database work and produces a Crystal Report. The initial form is simple a login form which validates the user. I am trying to use a datareader to retrieve the user's login info but it won't compile on the statement where I'm trying to get the Connection String from the app.config file. It complains that the ConfigurationManager is not declared on the dim statement. Where and how do I declare the ConfigurationManager? I thought it was just pointing to the app.config file but apparently that is not correct. [Code]
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Oct 2, 2010
how do i retrieve password in database using secret answer and email address and put the answer on label1.text? this is my code Private Sub btnRet_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnRet.Click
Dim con As New OleDb.OleDbConnection
Dim dbprovider As String
Dim dbsource As String
Dim ds As New DataSet
Dim da As OleDb.OleDbDataAdapter
Dim sql As String
[Code]...
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Jun 9, 2008
I have a combobox where the user can type the sql server name. Then a connect button that, when the user click, I want it to populate another combobox with all the databases from the server in the previous combobox. Unfortunately, I am getting the error object reference is not set....!
Here is where I am getting the error:
For Each objDB As Database In Me.SMOServer.Databases
I am new to VB ...I'm using vb2008 connecting to sql server 2005.
Here is my complete code:
Imports Microsoft.SqlServer.Management.Smo
Imports Microsoft.SqlServer.Management.Common
Public Class Form1
'Public Class frmSQLConnection
Private m_objServer As Server
[Code] .....
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Jan 29, 2010
I am using the following Select Statement to retrive data from my .csv file database:
Code:
Dim comm As New OleDb.OleDbCommand("Select *, Left([Street Full Address], IIF(InStr(12,[Street Full Address],'-')>0, InStr([Street Full Address],'-')-1, Len([Street Full Address]))) as StreetFullAddress From " &
[Code].....
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Mar 23, 2011
how to convert string to datetime and calculate date
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May 7, 2010
I'm trying to match a certain DateTime value with the current system DateTime. I have a timer and a label on a form. Timer interval is set to 1000. When the form loads, the timer starts ticking. As soon as the current DateTime matches the value of the variable, it shows a message in the label. When I'm writing the following code, the values don't match even if the current system DateTime is equal to the variable. Label1 isn't showing 'Times Matched':[code]The default format of 'Now' is the same as I have stored in dtmVar variable. So there's no question of format mismatch. Does that mean 'Now' is not actually a DateTime property? Provided, my O.S. is Windows Vista Ultimate and all date/time settings are set to default.
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May 1, 2010
I'm trying to match a certain DateTime value with the current system DateTime. I have a timer and a label on a form. Timer interval is set to 1000. When the form loads, the timer starts ticking. As soon as the current DateTime matches the value of the variable, it shows a message in the label.
When I'm writing the following code, the values don't match even if the current system DateTime is equal to the variable. Label1 isn't showing 'Times Matched':
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
Dim dtmNow As DateTime
[Code]....
Why is it so? The default format of 'Now' is the same as I have stored in dtmVar variable. So there's no question of format mismatch. Does that mean 'Now' is not actually a DateTime property? Provided, my O.S. is Windows Vista Ultimate and all date/time settings are set to default.
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Aug 8, 2011
datetime1 and datetime2now two fields are have data ( date )in table recordi want to update only datetime2 is an emptyi am using visual basic 2010 ( visual studio 2010
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Jul 29, 2009
I want to pick specific elements from DateTime and assign them to variables: Year, Month, Day, Hour, Minute, and Second. In MSDN, I saw ways to assign it all, but not what I needed.
Can anyone one give a hint, or two?
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Sep 16, 2010
how can i set auto DATETIME...
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Dec 27, 2010
I try to compare Datetime.Now with a Datetime variable I set, using the Datetime.CompareTo() method. I use a timer to compare these every second and display the result, but as the current time approaches the time I set, the result changes from 1 to -1, but never 0, which means these two are never equal. I'm suspecting the Datetime structure contains milliseconds?
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Mar 14, 2011
Assume the following program is started at 1:59:01 AM on 3/13/2011 in the United States. The first time Timer1 ticks what will be the value of the TimeSpan (ts)?
Public Class Form1
Private Sub Timer1_Tick(sender As System.Object, _
e As System.EventArgs) Handles Timer1.Tick
[code].....
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Jan 29, 2011
I'm trying to add the date and time of Today into a Sql-database-field that has the datetype datetime.
[Code]...
the msgbox gives me the following result: 29/01/2011 18:49:21 my sqlException gives me the following error: 102 - Incorrect syntax near '18'. Is it better that i set the datatype to char in my sql database? It's maybe a bit easier? When I do that, can I calculate with these date?
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Mar 9, 2010
It's been years since I've had to bother you with my silly questions but those had to do with VB 6. First of all, if I download the VS2010 Express edition will it replace all of my VS2008 edition, or will it be a separate entity. Also, the books I'm studying from are all 2008 -- will they still work on 2010?
[Code]...
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Jul 8, 2009
I got the dates stored as varchar(100). I need to get them sorted when I use these records but I can't now because they are not stored as datetime. Is there any other way to sort dates or if somebody know would I loose my data if I would try to convert the column from varchar(100) to datetime now as it holds my dates or maybe it would convert ok?
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Feb 17, 2009
Dim d1, d2 As DateTime
d1 = DateSerial(2009, 2, 29)
d2 = New DateTime(2009, 2, 29)
for some reason i thought the two statements would generate the same date, but they don't. i found this out when trying to do age(years / days) calculations. if you are born on a leap day, i.e. 2/29/2000, dateserial is useful in that in non-leap years it correctly identifies your birthday as 3/1.
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Sep 29, 2009
my form need to show the current date when click on button. the code inside the button is TextBox1.text = System.DateTime.Now.After clicking, the textbox show "9/29/2009 4:32:10 PM" may i know is it possible for me to show only the date and also to change the format to dd/mm/yyyy?
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Feb 17, 2012
I would like to compare the month of a date with datetime.now, when the datetime.now reaches a month beyond the given date to play a sound. I am novice to this.
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Nov 23, 2010
Here is the error that is getting thrown:
System.Data.SqlServerCe.SqlCeException was unhandled
HResult=-2147467259
Message="An overflow occurred while converting to datetime."
NativeError=25933
Source="SQL Server Compact ADO.NET Data Provider"
StackTrace:
[Code]...
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Dec 1, 2011
I am importing a .txt file to a gatagridview and writing out a Schema.ini fileMy columns that contains a date value is empty in my DGV when i use the:DateTime in my .ini fileIf I set it to Char then my date is populatedDoes this mean my dates in the text file are not really dates but strings ??
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Jun 29, 2011
I'm creating an XML file from values contained in a datatable. When I try to write an XML date value, I receive "String not recognized as a valid datetime. The dates that are stored in the datatable column is in this format "yyyymmdd". I tried to use XmlConvert.ToDateTime but I get a warning about the method being obsolete and I'm not sure what serialization mode I should use. How would I format the date from the datatable to MM/dd/yyyy and write to an XML file?
XmlWriter.WriteElementString("Add date", XmlConvert.ToDateTime(dr("Date_Added").ToString.Trim)))
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Dec 3, 2009
I recently moved a webservice VB.net project from VS 2005 to VS 2008 and now a conversion I use to create a unique receipt number is no longer working.
The Format() function which is supposedly a Visual basic function gives the error:
'Format' is a type and cannot be used as an expression.
The Year() Function which is also a VB function gives the error:
Name 'Year' is not declared.
The Datetime() Function which is also a VB function gives the error:
'DateTime' is a type and cannot be used as an expression.
The actual code statement remains unchanged between the two web services but VS2005 compiles and VS2008 does not.
Dim julda As Long = CLng(Format(Year(oneRowDon.Item(8)), "0000") _
+ Format(DateTime("d", CDate("01/01/" _
+ Format(Year(oneRowDon.Item(8)), "0000")), oneRowDon.Item(8)) _
+ 1, "000"))
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May 7, 2009
How can I achieve this. Insert Null Value into SQL Server DateTime Field?
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