VS 2008 - Format / Year And DateTime Function Not Recognized
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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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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Aug 4, 2011
I am trying to parse a date to a datetime picker but this error keeps on appearing "String was not recognized as a valid DateTime" The reason behind this is because the date format of the computer is "MM/dd/yyyy" whereas the date am passing is in this format "dd/MM/yyyy" Here is how I tried resolving the problem:
DTDateReceived.Value = Date.Parse(ListView1.Items.Item(ListView1.FocusedItem.Index).SubItems(7).Text)
The aforementioned error occurs
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Jun 1, 2011
working with dates is driving me mad I have the following function to parse al datetime strings in my project:
Public Shared Function ToDate(ByVal obj As Object) As DateTime?
If obj = String.Empty OrElse obj Is DBNull.Value Then Return Nothing
Return DateTime.Parse(obj.ToString)
End Function
Most of my date strings on my pc are "yyyy/MM/dd" and it parses fine. However on the server the dates are "dd/MM/yyyy".I tried this but it made no difference:
Public Shared Function ToDate(ByVal obj As Object) As DateTime?
If obj = String.Empty OrElse obj Is DBNull.Value Then Return Nothing
Return DateTime.Parse(obj.ToString, System.Threading.Thread.CurrentThread.CurrentCulture.DateTimeFormat)
End Function
on my pc if I assign DateTime.Now to a textbox I get 2011/05/31 08:02:00 AM for example. On the server I have my project the date displays as 31/05/2011 08:02:00 AM. Now I use objectdatasources to save the values to my database. Yesterday I was getting this error:Cannot convert value of parameter '' from 'System.String' to 'System.DateTime'until I formatted the date value like so:
Me.odsRates.InsertParameters.Add("CreatedDate", rt.CreatedDate.ToString("yyyy/MM/dd hh:mm:ss"))
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Mar 29, 2009
I am trying to write a bit of logic that compares a data against todays date in the row datarowbound event of a gridview. I think I am converting the row data item to datatype datetime but visual studio is telling me that I am not!
Protected Sub GvAdDetails_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GvAdDetails.RowDataBound
If e.Row.RowType = DataControlRowType.DataRow Then
If DataBinder.Eval(e.Row.DataItem, "dateLimit").ToString <> "NULL" Then
Dim dateLimit As Date
[Code] .....
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May 25, 2011
We have data feed, a file with index values and dates (like the S&P 500, for instance). The dates are represented as YYYYMMDD. The Date.Parse() method doesn't understand this format, of course.I wrote a simple static method on a class to parse this, not a big deal, but it irritates the engineer in me that I can't figure out how to get the IFormatProvider functionality to work. All the examples deal with the FORMATTING step, not the PARSING step.So basically, I want to be able to say:
Dim d as DateTime = Date.Parse("20110522", New CustomFormatter())
and get the correct date value out of the Parse method.
Having implemented the IFormatProvider method on CustomFormatter, the GetFormat() method gets called with a System.Type of DateTimeFormatInfo, but I honestly have no idea what to do from there since all the example deal with formatting, not parsing. It doesn't matter if I return an object (self) or null I simply get "String was not recognized as a valid DateTime."
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Jun 30, 2011
I am having a major issue understanding why this code runs fine once and then when run a second time causes the "String was not recognized as a valid DateTime." exception. This program loops through folders and subdirectorys and retrieves the file dates from the last modified date of the file , Its only when i click New Report to reset all the values in the settings which clears all object lists and resets all the other values that this issue occurs.
This is the value being passed to this function:
#6/14/2011 4:46:51 PM# (The file inside the subdirectory,s last modified date.)
The function is
Public Sub setFileDate(ByVal fileDate As DateTime)
'Format the datetime from the filedate to a UK culture.
Dim myDateTime As DateTime = DateTime.Parse(fileDate, ukCulture.DateTimeFormat)
'Set the current files date.
dFileDate = myDateTime.Date
[Code] .....
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Mar 10, 2009
I want to convert mm/dd/yyyy to dd/mm/yyyy.My application is asp.NET with VB.I tried following code DateTime.Parse(oldDate.ToString("ddmmyyyy"))
But got the error: "The string was not recognized as a valid dateTime. There is an unknown word starting at index 2"
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Feb 5, 2012
I've been having several problems lately with clients that are using a different Windows Region setting than I am. The error is as follows:
The type initializer for 'InventoryDataTable' threw an exception. ---> System.TypeInitializationException: The type initializer for 'InventoryDataTable' threw an exception. ---> System.FormatException: String was not recognized as a valid DateTime.
The error occurs when users load the application and their region settings do not match my own. The application loads up a dataset and attempts to receive a small amount of data before allowing the user to log in. When this is removed, the problem occurs immediately after the user logs in to the app. I cannot seem to find the proper settings to force the user to use either my Region, or to allow the application to figure it out on it's own...
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Apr 5, 2011
I'm pulling into a variable a datetime value. Now, I want to post this value back to my database, but I need it to be only the year digits. How do I get VB.NET to trim the month, day, and time off and just return the four character year (e.g. 2011)?
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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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Sep 9, 2011
I'm using EPPlus to create Excel reports. Now i'm trying to create a Pivot with a DateTime PageField, so that the user can filter the period he want to see by himself. But although i can filter this for year,month or days in the according data worksheet by default, i don't get it working in the Pivot.
Here is what i have:
Dim wsPivot = excel.Workbook.Worksheets.Add("Pivot")
Dim wsData = excel.Workbook.Worksheets.Add("Data")
Dim source = workSheet.GetDataSource
[Code].....
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Nov 24, 2009
We have installed new computers . The culture has been set to he-IL , as it should in regional settings and in asp.net iis tab in global edit configuration.When I've created a new console in c# and in main put in the line
DateTime date = DateTime.Now ;
My output was - "22/11/2009 12:54:42" as it should by the format "dd/mm/yyyy ..."
[code]....
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Sep 25, 2009
I am trying to get the current date in the following format - Year/Month/Day..Here is my code but the day bit isn't working.lblTodaysDate.Text = Year(Now).ToString() & "/" & Month(Now) & "/" & d(Now)
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Jul 4, 2012
i have input of 1995 in the texbox.what is code to convert that string to DATE.... with format of Y
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Oct 14, 2010
I am using a datetimepicker control to record leave dates. Since i am developing the application for a Ghanaian organization, i found out there is the need for me to format the datetimepicker value to suite the users so that it will look like how Ghanaian usaully write their dates. So i have been able to format it perfectly by using this code
[Code]...
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May 18, 2012
Doesn't it figure. Moments after I post this, I finally get it to work. I'll post what I did just in case anyone else has this issue in the futures. It's a big oversight for me!
[Code]...
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Sep 24, 2011
anyone knows the query of selecting from monthname and year(September 2011) from mysql database DATE format(yyyy-MM-dd)
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Dec 13, 2009
I'm using VS in Vista. I have using a DataBase in SQL2008 which its date format is year,month,day. In my app I have the date format as Format(Now, "d") which shows 13/12/2009 but when inserted it displays as 1900-01-01 in the DataBase. How can I have the date format to dispalay year,month,day as in the database.
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Oct 6, 2010
Since it's possible using the IsNumeric() and others VB.NET functions from IronPython by importing Microsoft.VisualBasic and using it as an object method, is it possible somehow to use the Year() VB.NET function from IronPython?
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Apr 15, 2012
One of the problems with datediff function is that even if the two dates are 31-12-2011 and 01-01-2012,it will show the difference as 1 year.How to overcome this problem?
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Sep 6, 2010
i have a datatable in access with a column " Time " and i use it in a datagridview how can i format it to short time in dgv
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Feb 15, 2010
I need to get the datetime.now but i dont need the format.datetime.now=15/02/2010 16:22:22i need this format (20060731 21:59:42)
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Apr 26, 2011
For some reason i can not format the text of my date in a gridview
[Code]...
I still get this: May 10 2011 12:00AM I DID NOT SET MY FIELD TO DATETIME IN THE DATABASE...DOY
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Jun 2, 2010
I have the date format string dd-mm-yy. Please can you tell me how to add hours and minutes to the string (i.e 13-03-2010.21.03) ....
DateTime.Today.ToString("dd-mm-yy") ?
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May 12, 2009
I have a datetime for eg:23/9/2009 10:00:00 AM .I want to get date from datetime.Means 23/9/2009 .
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Feb 21, 2012
I have this date format yy/MM/dd HH:mm:ss ex: 12/02/21 10:56:09. The problem is, when i try to convert it to different format using this code: CDate("12/02/21 10:56:09").ToString("MMM. dd, yyyy HH:mm:ss") It displays Dec. 12, 2021 10:56:09. How can i correctly format it to: Feb. 21, 2012 10:56:09? This format is returned when i check balance inquiry fro my SMS based application.
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Feb 17, 2011
I have a data which is 06/03/2010 03:05:22 PM from foxpro database which I need to transfer to mysql database but I think mysql datetime only accept YYYY-MM-DD HH:MM:SS <am I correct?> I am prompted with an error 'Incorrect datetime value: '06/03/2010 03:05:22 PM' for column 'date_update' at row 1'. My question is how can I change the format so I can resolve that error. I'm using vb.net 201...
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Oct 14, 2010
I'm having a hard time trying to change the format a date time that comes from the atabase.I convert that to a string so i can split date and time into different values.Once i have that, i would like to format the time with the 24 Hour format, instead of the 12 Hour format that i'm getting.
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Oct 31, 2011
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.
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