I am currently working on a custom data type, and wanted to implement a = operator.
I data type is a nullable date that returns a string value if date was supplied.
I want to allow the variable to be set like this
Dim nd as New NullableDate nd = Today Does anyone know how this can be done, or can anyone point me in the right direction?
Title pretty much says it all. How do I format the date of a dateandtimepicker to insert it into the SQL date datatype?
View 20 Replieswhen i am trying this Date.Compare(Format(DateTimePicker1.Value.Date, "dd/MM/yyyy"), Convert.ToDateTime(dr(1))) < 0 it gives an error message as "Conversion from string "23/06/2011" to type 'Date' is not valid."where dr(1) is database field in text format as 29/3/2011 (dd/mm/yyyy) .
View 3 Replieshow I can ensure that conversion of a date to a string and a string to a date will give me the same date format.
For example:
Code:
Private Sub Button1_Click(sender As System.Object, e As System.EventArgs) Handles Button1.Click
Dim d As Date = Date.Now
[code].....
I'm actually only interested in the date part as the label text shows so f is more than I want.But also, the day and month are reversed.
I did a clean install and tried to get the project running again. The code ... AlteredDate = SelectedDay & "/" & SelectedMonth & "/" & SelectedYear would always work defaulting to DD/MM/YYYY before the clean install. The program now runs an error "Conversion from string "13/8/2009" to type Date is not valid.. How do I change the default back to DD MM YYYY or format it to that?
View 3 Repliesconversion of date
if i used -- Date.parse("28/01/2011")
it gives me error as "String was not recognized as a valid DateTime."
so then i modify above code as -- CDate("28/01/2011").it gives me error as "Cast from string "28/01/2011" to type 'Date' is not valid." I used convert.todatetime also date.parseexact but nothing is working..
I'v designed a ms access database table with one field having Datetime datatype. I can Insert data into it from vb.net front end by trns_dt DateTime.Now.DateBut when I fetch records from the tableand assign the dataset datasource as da, it shows datatype mismatch error.
daleDbDataAdapter("SelectDaily_Transactiondtp_from_dt.value dtp_To.value con)
dsDataSet
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I'm trying to get datetime value but here is issue with nullable datetype.
Public Function GetDate(ByVal kodg As Integer) As DateTime
Dim g = From dt In db.xDates _
Join f In db.xGrafiks On dt.КодД Equals f.DateKod _
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I need to know how i can read REG_BINARY Type as string or date
View 2 RepliesI'm trying to assign a date object to nullable but my code error on CBDate1 = nullDate. The message indicates that I need to assign a value to a nullable. This is my first time using nullable[code\]...
View 9 RepliesI'm trying to assign a date object to nullable but my code error on CBDate1 = nullDate. The message indicates that I need to assign a value to a nullable. This is my first time using nullable.
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So there's this accounting package at my client that spits out text-based reports with invalid dates, like February 31st or September 31st.The reports are formatted with spaces and mono-spaced fonts. The data that gets parsed out are fed into a more formal local SSRS report, and that's about all you need to know.
What I am interested in fixing is the situation where a date is invalid and can't be converted into a DateTime struct. The date format from the report is "MMM-dd-yy" (e.g. "Feb-30-10"). The date strings need to be fixed before being shown in the formal report. I've seen this done two ways in my time as a developer, and I want to come up with a cleverer way of doing it (if there isn't a built-in way I don't know about).The first bad method (I can't believe I'm even showing you!):
Dim month As Integer = <Parse out the month from the bad date string>
Dim day As Integer = <Parse out the day from the bad date string>
Dim year As Integer = <Parse out the year from the bad date string>
Dim validDate As DateTime
[code]....
I am using SSIS and I need to transform a date. How can I transform a date in String format (e.g. 14/09/1980) to the same but in date format in VB.NET?
I would like the datetime format to insert it into a SQL database.
I have a string that holds a value in the format of ddMMyyhhmmss.
Example 240512024707
I need to be able to convert this date to a real .NET Date object.
I am currently using CDate but it seems CDate does not recognize the format, is there any way of specifying the string format to CDate ???
row.Item("NoteDate") = CDate(n.noteText.Substring(0, 12).ToString).ToString("dd/MM/yyyy hh:mm:ss")
I want to to make date format dd/mm/yyyy with access 2003
Dim strdate As string="22/09/2010"
Dim dd1 As New Date
dd1= strdate
I get : Conversion from string "22/09/2010" to type 'Date' is not valid.
I've got a method which takes some parameters and generates some XML to be sent to an [archaic] web service.
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I have a problem regarding to the date and time.im using combobox for the date and i make of variables..this is my code.[code]i dont know what is my error..but my syntax to insert data its correct..
View 3 RepliesI have an access form that shows a data table. when the form is opened, I want to filter the data in the date column to show only the records that don't have a date entered into the field.
View 8 RepliesIs there any way to get the date (from Today.Date/User input) to a whole number and then return it to a date string?Only way I have so far thought of is:[code]
View 11 RepliesI'm using date in the format dd-mm-yyyy and I need to convert a string inthis format to a date type.My string is "18-01-2010" but when I do the conversion using dim TargetDate as date=CDate(TgDstr).where TgDstr is "18-01-2010", the resutant TargetDate, as note in the debugger window, is #1/18/2010# rather than #18/1/2010# which I expected.What change in code should I made to get the desired result?
(P.s. I've checked the current culture with the following line of code:
Dim str As String = CultureInfo.CurrentCulture.Name and get the result 'zh-HK'... and the date-time format I find in the control panel is also in dd-mm-yy format)
I have a table named fec in which i hv column named EndDt having Date/Time Data type.Now i want to display those records in my report which have EndDt less than Date i pick from DateTimePicker and month is current month.Private Sub DtpDefault_ValueChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DtpDefault.ValueChanged
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i'm doing attendance monitoring system. i cant find out how to show datetime in datagrid taht will shows date or time only.
View 10 RepliesI would need to update a record using inline SQL string, when I use the first SQL string I get the error "data type mismatch in criteria expresion" but when I remove the time fields and run the SQL string the code works
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We are working on an ASP.Net/VB.Net application using Enterprise Library for our data access (DAAB).
We are trying to store DateTime values in an Oracle Date field. However, the precision is being lost. Currently only the year, month, and date are being stored. We need better precision than this.
Oracle Dates are supposed to "includes not just the month, day, and year, but also
the hour, minute, and second. "
Im trying to write a current date and time stamp to mysql with the following code
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I am debugging an application that I ported from Windows, to *nix, a little while ago. The app stores dates as doubles (using the OLE Date format). I need to be able to inspect the dates - as human readable strings. I cant find an online conversion tool, so I decided to roll my own.
I was originally going to write an OpenOffice function, but I think it would be more straightforward to use one of the .Net languages, to write a small console app that accepts the double as a parameter and prints the date string to the console.
I am relatively new to .Net (though I have dabbled with both C# and VB.Net in the past). Can anyone help with my main() function? - snippets in either VB.Net or C# will be equally useful.
I have a date, as a Date type and a time, as a String and I want to combine the two into a Date type. ie. #2/11/2011# & "13:55:27" = #2/11/2011 1:55:27 PM#. How can I do this?
View 2 RepliesI have a DateTimePicker control that returns the current date.My usage is like this: DateTimeInput.Value.ToString("MMMM dd, yyyy")Please note that I need to get the date in the specified format.I just don't know how to add 1~2 years to the date.I mean if user selected January 01, 2009, I want to get January 01, 2010.So how can I add just 1 year or 2 years to the year of returned value?
View 3 RepliesI am having a bit of an issue with a reporting tool I have in a program in VB.Net.when I select a date for the report all returns properly but when I want to print that report it returns all the information ecept does not carrie over the tempStr of totalcost, totalexpense and totalprofit onto the second page of the report....it only calculates the few entrys on the second page..
View 1 RepliesI do encounter interest problem when I am using VBNet2008 and SQL Server 2000. I am developing Window Application and one of the form I am using SQL String with Date between to retrieve specific data from SQL SERVER 2000 Table and it's not working and generated this error message:
Invalid column name strFromDate
Invalid column name strToDate
Here are the overall coding:
Dim sqlconn As SqlConnection
Dim sqlcmd As SqlCommand
Dim DA As SqlDataAdapter
Dim DR As SqlDataReader
[Code] .....